rnd-20040814-1-src
[rocksndiamonds.git] / src / libem / synchro_2.c
diff --git a/src/libem/synchro_2.c b/src/libem/synchro_2.c
new file mode 100644 (file)
index 0000000..731e9fa
--- /dev/null
@@ -0,0 +1,3813 @@
+
+/* second part of synchro.
+ *
+ * game logic for monsters.
+ *
+ * one giant switch statement to process everything.
+ *
+ * this whole thing is a major bottleneck. the compiler must use registers. compilers suck.
+ */
+
+#include "display.h"
+#include "tile.h"
+#include "level.h"
+#include "sample.h"
+
+extern unsigned int screen_x;
+extern unsigned int screen_y;
+
+void synchro_2(void)
+{
+       register unsigned int x = 0;
+       register unsigned int y = 1;
+       register unsigned long random = Random;
+       register unsigned short *cave_cache = Cave[y]; /* might be a win */
+       unsigned long score = 0;
+
+       unsigned int temp = 0;  /* initialized to make compilers happy */
+       unsigned int left = screen_x / TILEX; /* only needed for sounds */
+       unsigned int top = screen_y / TILEY;
+       unsigned int dx; /* only needed to find closest player */
+       unsigned int dy;
+
+#define RANDOM (random = random << 31 | random >> 1)
+#define PLAY(sample) { if((unsigned int)(y - top) <= 12 && (unsigned int)(x - left) <= 20) play[sample] = 1; }
+
+loop:
+       switch(cave_cache[++x]) {
+       default:
+               goto loop;
+/* ---------------------------------------------------------------------- */
+#ifdef BAD_ROLL
+       case Xstone_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xstone;
+                       Next[y][x] = Xstone;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ystone_eB;
+                       Cave[y][x+1] = Ystone_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xstone_pause;
+                       goto loop;
+               }
+       case Xstone_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xstone;
+                       Next[y][x] = Xstone;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ystone_wB;
+                       Cave[y][x-1] = Ystone_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xstone_pause;
+                       goto loop;
+               }
+       case Xnut_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xnut;
+                       Next[y][x] = Xnut;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ynut_eB;
+                       Cave[y][x+1] = Ynut_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xnut_pause;
+                       goto loop;
+               }
+       case Xnut_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xnut;
+                       Next[y][x] = Xnut;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ynut_wB;
+                       Cave[y][x-1] = Ynut_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xnut_pause;
+                       goto loop;
+               }
+       case Xspring_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       goto loop;
+               default:
+                       Cave[y][x] = Yspring_eB;
+                       Cave[y][x+1] = Yspring_e;
+                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                       Next[y][x+1] = Xspring_e;
+#else
+                       Next[y][x+1] = Xspring_pause;
+#endif
+                       goto loop;
+               }
+       case Xspring_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       goto loop;
+               default:
+                       Cave[y][x] = Yspring_wB;
+                       Cave[y][x-1] = Yspring_w;
+                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                       Next[y][x-1] = Xspring_w;
+#else
+                       Next[y][x-1] = Xspring_pause;
+#endif
+                       goto loop;
+               }
+       case Xemerald_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xemerald;
+                       Next[y][x] = Xemerald;
+                       goto loop;
+               default:
+                       Cave[y][x] = Yemerald_eB;
+                       Cave[y][x+1] = Yemerald_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xemerald_pause;
+                       goto loop;
+               }
+       case Xemerald_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xemerald;
+                       Next[y][x] = Xemerald;
+                       goto loop;
+               default:
+                       Cave[y][x] = Yemerald_wB;
+                       Cave[y][x-1] = Yemerald_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xemerald_pause;
+                       goto loop;
+               }
+       case Xdiamond_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xdiamond;
+                       Next[y][x] = Xdiamond;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ydiamond_eB;
+                       Cave[y][x+1] = Ydiamond_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xdiamond_pause;
+                       goto loop;
+               }
+       case Xdiamond_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xdiamond;
+                       Next[y][x] = Xdiamond;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ydiamond_wB;
+                       Cave[y][x-1] = Ydiamond_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xdiamond_pause;
+                       goto loop;
+               }
+       case Xbomb_force_e:
+               switch(Cave[y][x+1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xbomb;
+                       Next[y][x] = Xbomb;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybomb_eB;
+                       Cave[y][x+1] = Ybomb_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xbomb_pause;
+                       goto loop;
+               }
+       case Xbomb_force_w:
+               switch(Cave[y][x-1]) {
+               case ZBORDER:
+               case Znormal:
+               case Zdynamite:
+               case Xboom_bug:
+               case Xboom_bomb:
+               case Xboom_android:
+               case Xboom_1:
+               case Zplayer:
+                       Cave[y][x] = Xbomb;
+                       Next[y][x] = Xbomb;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybomb_wB;
+                       Cave[y][x-1] = Ybomb_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xbomb_pause;
+                       goto loop;
+               }
+#endif
+/* ---------------------------------------------------------------------- */
+       case Xstone:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ystone_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ystone_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xstone_fall;
+                       goto loop;
+               case Xsand:
+                       Cave[y][x] = Xsand_stonein_1;
+                       Cave[y+1][x] = Xsand_sandstone_1;
+                       Next[y][x] = Xsand_stonein_2;
+                       Next[y+1][x] = Xsand_sandstone_2;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xlenses:
+               case Xmagnify:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ystone_eB;
+                                       Cave[y][x+1] = Ystone_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xstone_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ystone_wB;
+                                       Cave[y][x-1] = Ystone_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xstone_pause;
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ystone_wB;
+                                       Cave[y][x-1] = Ystone_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xstone_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ystone_eB;
+                                       Cave[y][x+1] = Ystone_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xstone_pause;
+                                       goto loop;
+                               }
+                       }
+               default:
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xstone_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ystone_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ystone_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xstone_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xstone;
+                       Next[y][x] = Xstone;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xstone_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ystone_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Zplayer:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ystone_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xstone_fall;
+                       goto loop;
+               case Xnut:
+               case Xnut_pause:
+                       Cave[y+1][x] = Yemerald_stone;
+                       Next[y][x] = Xstone;
+                       Next[y+1][x] = Xemerald;
+                       play[SAMPLE_crack] = 1;
+                       score += lev.nut_score;
+                       goto loop;
+               case Xbug_n:
+               case Xbug_e:
+               case Xbug_s:
+               case Xbug_w:
+               case Xbug_gon:
+               case Xbug_goe:
+               case Xbug_gos:
+               case Xbug_gow:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ybug_stone;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xemerald;
+                       Boom[y][x] = Xemerald;
+                       Boom[y][x+1] = Xemerald;
+                       Boom[y+1][x-1] = Xemerald;
+                       Boom[y+1][x] = Xdiamond;
+                       Boom[y+1][x+1] = Xemerald;
+                       Boom[y+2][x-1] = Xemerald;
+                       Boom[y+2][x] = Xemerald;
+                       Boom[y+2][x+1] = Xemerald;
+                       score += lev.bug_score;
+                       goto loop;
+               case Xtank_n:
+               case Xtank_e:
+               case Xtank_s:
+               case Xtank_w:
+               case Xtank_gon:
+               case Xtank_goe:
+               case Xtank_gos:
+               case Xtank_gow:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ytank_stone;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       score += lev.tank_score;
+                       goto loop;
+               case Xspring:
+                       if(RANDOM & 1) {
+                               switch(Cave[y+1][x+1]) {
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xalien:
+                               case Xalien_pause:
+                                       Cave[y+1][x] = Xspring_e; break;
+                               default:
+                                       Cave[y+1][x] = Xspring_w; break;
+                               }
+                       } else {
+                               switch(Cave[y+1][x-1]) {
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xalien:
+                               case Xalien_pause:
+                                       Cave[y+1][x] = Xspring_w; break;
+                               default:
+                                       Cave[y+1][x] = Xspring_e; break;
+                               }
+                       }
+                       Next[y][x] = Xstone;
+                       goto loop;
+               case Xeater_n:
+               case Xeater_e:
+               case Xeater_s:
+               case Xeater_w:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Yeater_stone;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = lev.eater_array[lev.eater_pos][0];
+                       Boom[y][x] = lev.eater_array[lev.eater_pos][1];
+                       Boom[y][x+1] = lev.eater_array[lev.eater_pos][2];
+                       Boom[y+1][x-1] = lev.eater_array[lev.eater_pos][3];
+                       Boom[y+1][x] = lev.eater_array[lev.eater_pos][4];
+                       Boom[y+1][x+1] = lev.eater_array[lev.eater_pos][5];
+                       Boom[y+2][x-1] = lev.eater_array[lev.eater_pos][6];
+                       Boom[y+2][x] = lev.eater_array[lev.eater_pos][7];
+                       Boom[y+2][x+1] = lev.eater_array[lev.eater_pos][8];
+                       lev.eater_pos = (lev.eater_pos + 1) & 7;
+                       score += lev.eater_score;
+                       goto loop;
+               case Xalien:
+               case Xalien_pause:
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Yalien_stone;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       score += lev.alien_score;
+                       goto loop;
+               case Xdiamond:
+               case Xdiamond_pause:
+                       switch(Cave[y+2][x]) {
+                       case Xblank:
+                       case Yacid_splash_eB:
+                       case Yacid_splash_wB:
+                       case Zplayer:
+                       case Xbug_n:
+                       case Xbug_e:
+                       case Xbug_s:
+                       case Xbug_w:
+                       case Xbug_gon:
+                       case Xbug_goe:
+                       case Xbug_gos:
+                       case Xbug_gow:
+                       case Xtank_n:
+                       case Xtank_e:
+                       case Xtank_s:
+                       case Xtank_w:
+                       case Xtank_gon:
+                       case Xtank_goe:
+                       case Xtank_gos:
+                       case Xtank_gow:
+                       case Xspring_fall:
+                       case Xandroid:
+                       case Xandroid_1_n:
+                       case Xandroid_2_n:
+                       case Xandroid_1_e:
+                       case Xandroid_2_e:
+                       case Xandroid_1_s:
+                       case Xandroid_2_s:
+                       case Xandroid_1_w:
+                       case Xandroid_2_w:
+                       case Xstone_fall:
+                       case Xemerald_fall:
+                       case Xdiamond_fall:
+                       case Xbomb_fall:
+                       case Xacid_s:
+                       case Xacid_1:
+                       case Xacid_2:
+                       case Xacid_3:
+                       case Xacid_4:
+                       case Xacid_5:
+                       case Xacid_6:
+                       case Xacid_7:
+                       case Xacid_8:
+                       case Xnut_fall:
+                       case Xplant:
+                       case Yplant:
+                               Next[y][x] = Xstone;
+                               PLAY(SAMPLE_stone);
+                               goto loop;
+                       }
+                       Cave[y][x] = Ystone_sB;
+                       Cave[y+1][x] = Ydiamond_stone;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xstone_pause;
+                       play[SAMPLE_squash] = 1;
+                       goto loop;
+               case Xbomb:
+               case Xbomb_pause:
+                       Cave[y+1][x] = Ybomb_eat;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       goto loop;
+               case Xwonderwall:
+                       if(lev.wonderwall_time) {
+                               lev.wonderwall_state = 1;
+                               Cave[y][x] = Ystone_sB;
+                               if(tab_blank[Cave[y+2][x]]) {
+                                       Cave[y+2][x] = Yemerald_s;
+                                       Next[y+2][x] = Xemerald_fall;
+                               }
+                               Next[y][x] = Xblank;
+                               play[SAMPLE_squash] = 1;
+                               goto loop;
+                       }
+               default:
+                       Cave[y][x] = Xstone;
+                       Next[y][x] = Xstone;
+                       PLAY(SAMPLE_stone);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xnut:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ynut_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ynut_sB;
+                       Cave[y+1][x] = Ynut_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xnut_fall;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ynut_eB;
+                                       Cave[y][x+1] = Ynut_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xnut_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ynut_wB;
+                                       Cave[y][x-1] = Ynut_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xnut_pause;
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ynut_wB;
+                                       Cave[y][x-1] = Ynut_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xnut_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ynut_eB;
+                                       Cave[y][x+1] = Ynut_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xnut_pause;
+                                       goto loop;
+                               }
+                       }
+               default:
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xnut_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ynut_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ynut_sB;
+                       Cave[y+1][x] = Ynut_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xnut_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xnut;
+                       Next[y][x] = Xnut;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xnut_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ynut_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Zplayer:
+                       Cave[y][x] = Ynut_sB;
+                       Cave[y+1][x] = Ynut_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xnut_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xnut;
+                       Next[y][x] = Xnut;
+                       PLAY(SAMPLE_nut);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbug_n:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+               switch(Cave[y][x+1]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ybug_n_e;
+                       Next[y][x] = Xbug_goe;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       goto bug_gon;
+               }
+       case Xbug_gon:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+       bug_gon:
+               switch(Cave[y-1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybug_nB;
+                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ybug_nB;
+                       Cave[y-1][x] = Ybug_n;
+                       Next[y][x] = Xblank;
+                       Next[y-1][x] = Xbug_n;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybug_n_w;
+                       Next[y][x] = Xbug_gow;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbug_e:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+               switch(Cave[y+1][x]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ybug_e_s;
+                       Next[y][x] = Xbug_gos;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       goto bug_goe;
+               }
+       case Xbug_goe:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+       bug_goe:
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybug_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ybug_eB;
+                       Cave[y][x+1] = Ybug_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xbug_e;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybug_e_n;
+                       Next[y][x] = Xbug_gon;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbug_s:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+               switch(Cave[y][x-1]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ybug_s_w;
+                       Next[y][x] = Xbug_gow;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       goto bug_gos;
+               }
+       case Xbug_gos:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+       bug_gos:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybug_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ybug_sB;
+                       Cave[y+1][x] = Ybug_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xbug_s;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybug_s_e;
+                       Next[y][x] = Xbug_goe;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbug_w:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+               switch(Cave[y-1][x]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ybug_w_n;
+                       Next[y][x] = Xbug_gon;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       goto bug_gow;
+               }
+       case Xbug_gow:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto bug_boom;
+       bug_gow:
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybug_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ybug_wB;
+                       Cave[y][x-1] = Ybug_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xbug_w;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybug_w_s;
+                       Next[y][x] = Xbug_gos;
+                       PLAY(SAMPLE_bug);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xtank_n:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+               switch(Cave[y][x-1]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ytank_n_w;
+                       Next[y][x] = Xtank_gow;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto tank_gon;
+               }
+       case Xtank_gon:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+       tank_gon:
+               switch(Cave[y-1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ytank_nB;
+                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ytank_nB;
+                       Cave[y-1][x] = Ytank_n;
+                       Next[y][x] = Xblank;
+                       Next[y-1][x] = Xtank_n;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ytank_n_e;
+                       Next[y][x] = Xtank_goe;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xtank_e:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+               switch(Cave[y-1][x]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ytank_e_n;
+                       Next[y][x] = Xtank_gon;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto tank_goe;
+               }
+       case Xtank_goe:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+       tank_goe:
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ytank_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ytank_eB;
+                       Cave[y][x+1] = Ytank_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xtank_e;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ytank_e_s;
+                       Next[y][x] = Xtank_gos;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xtank_s:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+               switch(Cave[y][x+1]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ytank_s_e;
+                       Next[y][x] = Xtank_goe;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto tank_gos;
+               }
+       case Xtank_gos:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+       tank_gos:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ytank_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ytank_sB;
+                       Cave[y+1][x] = Ytank_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xtank_s;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ytank_s_w;
+                       Next[y][x] = Xtank_gow;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xtank_w:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+               switch(Cave[y+1][x]) {
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+               case Zplayer:
+                       Cave[y][x] = Ytank_w_s;
+                       Next[y][x] = Xtank_gos;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto tank_gow;
+               }
+       case Xtank_gow:
+               if(tab_ameuba[Cave[y-1][x]] || tab_ameuba[Cave[y][x+1]] || tab_ameuba[Cave[y+1][x]] || tab_ameuba[Cave[y][x-1]]) goto tank_boom;
+       tank_gow:
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ytank_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ytank_wB;
+                       Cave[y][x-1] = Ytank_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xtank_w;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       Cave[y][x] = Ytank_w_n;
+                       Next[y][x] = Xtank_gon;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xandroid:
+       android:
+               if(lev.android_clone_cnt == 0) {
+                       if(Cave[y-1][x-1] != Xblank && Cave[y-1][x] != Xblank &&
+                          Cave[y-1][x+1] != Xblank && Cave[y][x-1] != Xblank &&
+                          Cave[y][x+1] != Xblank && Cave[y+1][x-1] != Xblank &&
+                          Cave[y+1][x] != Xblank && Cave[y+1][x+1] != Xblank) goto android_move;
+
+                       switch(RANDOM & 7) { /* randomly find an object to clone */
+                       case 0: /* S,NE,W,NW,SE,E,SW,N */
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 1: /* NW,SE,N,S,NE,SW,E,W */
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 2: /* SW,E,S,W,N,NW,SE,NE */
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 3: /* N,SE,NE,E,W,S,NW,SW */
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 4: /* SE,NW,E,NE,SW,W,N,S */
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 5: /* NE,W,SE,SW,S,N,E,NW */
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 6: /* E,N,SW,S,NW,NE,SE,W */
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               goto android_move;
+                       case 7: /* W,SW,NW,N,E,SE,NE,S */
+                               temp = lev.android_array[Cave[y][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x-1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y-1][x+1]]; if(temp != Xblank) break;
+                               temp = lev.android_array[Cave[y+1][x]]; if(temp != Xblank) break;
+                               goto android_move;
+                       }
+                       Next[y][x] = temp; /* the item we chose to clone */
+                       play[SAMPLE_android] = 1;
+                       switch(RANDOM & 7) { /* randomly find a direction to move */
+                       case 0: /* S,NE,W,NW,SE,E,SW,N */
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               goto android_move;
+                       case 1: /* NW,SE,N,S,NE,SW,E,W */
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               goto android_move;
+                       case 2: /* SW,E,S,W,N,NW,SE,NE */
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               goto android_move;
+                       case 3: /* N,SE,NE,E,W,S,NW,SW */
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               goto android_move;
+                       case 4: /* SE,NW,E,NE,SW,W,N,S */
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               goto android_move;
+                       case 5: /* NE,W,SE,SW,S,N,E,NW */
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               goto android_move;
+                       case 6: /* E,N,SW,S,NW,NE,SE,W */
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               goto android_move;
+                       case 7: /* W,SW,NW,N,E,SE,NE,S */
+                               if(Cave[y][x-1] == Xblank) goto android_w;
+                               if(Cave[y+1][x-1] == Xblank) goto android_sw;
+                               if(Cave[y-1][x-1] == Xblank) goto android_nw;
+                               if(Cave[y-1][x] == Xblank) goto android_n;
+                               if(Cave[y][x+1] == Xblank) goto android_e;
+                               if(Cave[y+1][x+1] == Xblank) goto android_se;
+                               if(Cave[y-1][x+1] == Xblank) goto android_ne;
+                               if(Cave[y+1][x] == Xblank) goto android_s;
+                               goto android_move;
+                       }
+               }
+       android_move:
+               if(lev.android_move_cnt == 0) {
+                       if(Cave[y-1][x-1] == Zplayer || Cave[y-1][x] == Zplayer ||
+                          Cave[y-1][x+1] == Zplayer || Cave[y][x-1] == Zplayer ||
+                          Cave[y][x+1] == Zplayer || Cave[y+1][x-1] == Zplayer ||
+                          Cave[y+1][x] == Zplayer || Cave[y+1][x+1] == Zplayer) goto android_still;
+
+                       if(ply1.alive && ply2.alive) {
+                               if( (ply1.x > x ? ply1.x - x : x - ply1.x) + (ply1.y > y ? ply1.y - y : y - ply1.y) < (ply2.x > x ? ply2.x - x : x - ply2.x) + (ply2.y > y ? ply2.y - y : y - ply2.y) ) {
+                                       dx = ply1.x;
+                                       dy = ply1.y;
+                               } else {
+                                       dx = ply2.x;
+                                       dy = ply2.y;
+                               }
+                       } else if(ply1.alive) {
+                               dx = ply1.x;
+                               dy = ply1.y;
+                       } else if(ply2.alive) {
+                               dx = ply2.x;
+                               dy = ply2.y;
+                       } else {
+                               dx = 0;
+                               dy = 0;
+                       }
+                       Next[y][x] = Xblank; /* assume we will move */
+                       temp = ((x < dx) + 1 - (x > dx)) + ((y < dy) + 1 - (y > dy)) * 3;
+                       if(RANDOM & 1) {
+                               switch(temp) { /* attempt clockwise move first if direct path is blocked */
+                               case 0: /* north west */
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       break;
+                               case 1: /* north */
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       break;
+                               case 2: /* north east */
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       break;
+                               case 3: /* west */
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       break;
+                               case 4: /* nowhere */
+                                       break;
+                               case 5: /* east */
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       break;
+                               case 6: /* south west */
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       break;
+                               case 7: /* south */
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       break;
+                               case 8: /* south east */
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       break;
+                               }
+                       } else {
+                               switch(temp) { /* attempt counter clockwise move first if direct path is blocked */
+                               case 0: /* north west */
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       break;
+                               case 1: /* north */
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       break;
+                               case 2: /* north east */
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       if(tab_android_move[Cave[y-1][x]]) goto android_n;
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       break;
+                               case 3: /* west */
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       if(tab_android_move[Cave[y-1][x-1]]) goto android_nw;
+                                       break;
+                               case 4: /* nowhere */
+                                       break;
+                               case 5: /* east */
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       if(tab_android_move[Cave[y-1][x+1]]) goto android_ne;
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       break;
+                               case 6: /* south west */
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       if(tab_android_move[Cave[y][x-1]]) goto android_w;
+                                       break;
+                               case 7: /* south */
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       if(tab_android_move[Cave[y+1][x-1]]) goto android_sw;
+                                       break;
+                               case 8: /* south east */
+                                       if(tab_android_move[Cave[y+1][x+1]]) goto android_se;
+                                       if(tab_android_move[Cave[y][x+1]]) goto android_e;
+                                       if(tab_android_move[Cave[y+1][x]]) goto android_s;
+                                       break;
+                               }
+                       }
+               }
+       android_still:
+               Next[y][x] = Xandroid;
+               goto loop;
+       android_n:
+               Cave[y][x] = Yandroid_nB;
+               Cave[y-1][x] = Yandroid_n;
+               Next[y-1][x] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_ne:
+               Cave[y][x] = Yandroid_neB;
+               Cave[y-1][x+1] = Yandroid_ne;
+               Next[y-1][x+1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_e:
+               Cave[y][x] = Yandroid_eB;
+               Cave[y][x+1] = Yandroid_e;
+               Next[y][x+1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_se:
+               Cave[y][x] = Yandroid_seB;
+               Cave[y+1][x+1] = Yandroid_se;
+               Next[y+1][x+1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_s:
+               Cave[y][x] = Yandroid_sB;
+               Cave[y+1][x] = Yandroid_s;
+               Next[y+1][x] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_sw:
+               Cave[y][x] = Yandroid_swB;
+               Cave[y+1][x-1] = Yandroid_sw;
+               Next[y+1][x-1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_w:
+               Cave[y][x] = Yandroid_wB;
+               Cave[y][x-1] = Yandroid_w;
+               Next[y][x-1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+       android_nw:
+               Cave[y][x] = Yandroid_nwB;
+               Cave[y-1][x-1] = Yandroid_nw;
+               Next[y-1][x-1] = Xandroid;
+               PLAY(SAMPLE_tank);
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xandroid_1_n:
+               switch(Cave[y-1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_nB;
+                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_nB;
+                       Cave[y-1][x] = Yandroid_n;
+                       Next[y][x] = Xblank;
+                       Next[y-1][x] = Xandroid;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+       case Xandroid_2_n:
+               switch(Cave[y-1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_nB;
+                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_nB;
+                       Cave[y-1][x] = Yandroid_n;
+                       Next[y][x] = Xblank;
+                       Next[y-1][x] = Xandroid_1_n;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xandroid_1_e:
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_eB;
+                       Cave[y][x+1] = Yandroid_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xandroid;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+       case Xandroid_2_e:
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_eB;
+                       Cave[y][x+1] = Yandroid_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xandroid_1_e;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xandroid_1_s:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_sB;
+                       Cave[y+1][x] = Yandroid_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xandroid;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+       case Xandroid_2_s:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_sB;
+                       Cave[y+1][x] = Yandroid_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xandroid_1_s;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xandroid_1_w:
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_wB;
+                       Cave[y][x-1] = Yandroid_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xandroid;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+       case Xandroid_2_w:
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yandroid_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yandroid_wB;
+                       Cave[y][x-1] = Yandroid_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xandroid_1_w;
+                       PLAY(SAMPLE_tank);
+                       goto loop;
+               default:
+                       goto android;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xspring:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yspring_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xspring_fall;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Yspring_eB;
+                                       Cave[y][x+1] = Yspring_e;
+                                       if(Cave[y+1][x] == Xbumper) Cave[y+1][x] = XbumperB;
+                                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                                       Next[y][x+1] = Xspring_e;
+#else
+                                       Next[y][x+1] = Xspring_pause;
+#endif
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Yspring_wB;
+                                       Cave[y][x-1] = Yspring_w;
+                                       if(Cave[y+1][x] == Xbumper) Cave[y+1][x] = XbumperB;
+                                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                                       Next[y][x-1] = Xspring_w;
+#else
+                                       Next[y][x-1] = Xspring_pause;
+#endif
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Yspring_wB;
+                                       Cave[y][x-1] = Yspring_w;
+                                       if(Cave[y+1][x] == Xbumper) Cave[y+1][x] = XbumperB;
+                                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                                       Next[y][x-1] = Xspring_w;
+#else
+                                       Next[y][x-1] = Xspring_pause;
+#endif
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Yspring_eB;
+                                       Cave[y][x+1] = Yspring_e;
+                                       if(Cave[y+1][x] == Xbumper) Cave[y+1][x] = XbumperB;
+                                       Next[y][x] = Xblank;
+#ifdef BAD_SPRING
+                                       Next[y][x+1] = Xspring_e;
+#else
+                                       Next[y][x+1] = Xspring_pause;
+#endif
+                                       goto loop;
+                               }
+                       }
+               default:
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xspring_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yspring_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xspring_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xspring_e:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yspring_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xspring_fall;
+                       goto loop;
+               case Xbumper:
+                       Cave[y+1][x] = XbumperB;
+               }
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Yalien_nB:
+               case Yalien_eB:
+               case Yalien_sB:
+               case Yalien_wB:
+                       Cave[y][x] = Yspring_eB;
+                       Cave[y][x+1] = Yspring_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xspring_e;
+                       goto loop;
+               case Xalien:
+               case Xalien_pause:
+               case Yalien_n:
+               case Yalien_e:
+               case Yalien_s:
+               case Yalien_w:
+                       Cave[y][x] = Yspring_kill_eB;
+                       Cave[y][x+1] = Yspring_kill_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xspring_e;
+                       play[SAMPLE_slurp] = 1;
+                       score += lev.slurp_score;
+                       goto loop;
+               case Xbumper:
+               case XbumperB:
+                       Cave[y][x+1] = XbumperB;
+                       Next[y][x] = Xspring_w;
+                       PLAY(SAMPLE_spring);
+                       goto loop;
+               default:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       PLAY(SAMPLE_spring);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xspring_w:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yspring_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xspring_fall;
+                       goto loop;
+               case Xbumper:
+                       Cave[y+1][x] = XbumperB;
+               }
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Yalien_nB:
+               case Yalien_eB:
+               case Yalien_sB:
+               case Yalien_wB:
+                       Cave[y][x] = Yspring_wB;
+                       Cave[y][x-1] = Yspring_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xspring_w;
+                       goto loop;
+               case Xalien:
+               case Xalien_pause:
+               case Yalien_n:
+               case Yalien_e:
+               case Yalien_s:
+               case Yalien_w:
+                       Cave[y][x] = Yspring_kill_wB;
+                       Cave[y][x-1] = Yspring_kill_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xspring_w;
+                       play[SAMPLE_slurp] = 1;
+                       score += lev.slurp_score;
+                       goto loop;
+               case Xbumper:
+               case XbumperB:
+                       Cave[y][x-1] = XbumperB;
+                       Next[y][x] = Xspring_e;
+                       PLAY(SAMPLE_spring);
+                       goto loop;
+               default:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       PLAY(SAMPLE_spring);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xspring_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yspring_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Zplayer:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yspring_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xspring_fall;
+                       goto loop;
+               case Xbomb:
+               case Xbomb_pause:
+                       Cave[y+1][x] = Ybomb_eat;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       goto loop;
+               case Xbug_n:
+               case Xbug_e:
+               case Xbug_s:
+               case Xbug_w:
+               case Xbug_gon:
+               case Xbug_goe:
+               case Xbug_gos:
+               case Xbug_gow:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Ybug_spring;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xemerald;
+                       Boom[y][x] = Xemerald;
+                       Boom[y][x+1] = Xemerald;
+                       Boom[y+1][x-1] = Xemerald;
+                       Boom[y+1][x] = Xdiamond;
+                       Boom[y+1][x+1] = Xemerald;
+                       Boom[y+2][x-1] = Xemerald;
+                       Boom[y+2][x] = Xemerald;
+                       Boom[y+2][x+1] = Xemerald;
+                       score += lev.bug_score;
+                       goto loop;
+               case Xtank_n:
+               case Xtank_e:
+               case Xtank_s:
+               case Xtank_w:
+               case Xtank_gon:
+               case Xtank_goe:
+               case Xtank_gos:
+               case Xtank_gow:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Ytank_spring;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       score += lev.tank_score;
+                       goto loop;
+               case Xeater_n:
+               case Xeater_e:
+               case Xeater_s:
+               case Xeater_w:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yeater_spring;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = lev.eater_array[lev.eater_pos][0];
+                       Boom[y][x] = lev.eater_array[lev.eater_pos][1];
+                       Boom[y][x+1] = lev.eater_array[lev.eater_pos][2];
+                       Boom[y+1][x-1] = lev.eater_array[lev.eater_pos][3];
+                       Boom[y+1][x] = lev.eater_array[lev.eater_pos][4];
+                       Boom[y+1][x+1] = lev.eater_array[lev.eater_pos][5];
+                       Boom[y+2][x-1] = lev.eater_array[lev.eater_pos][6];
+                       Boom[y+2][x] = lev.eater_array[lev.eater_pos][7];
+                       Boom[y+2][x+1] = lev.eater_array[lev.eater_pos][8];
+                       lev.eater_pos = (lev.eater_pos + 1) & 7;
+                       score += lev.eater_score;
+                       goto loop;
+               case Xalien:
+               case Xalien_pause:
+                       Cave[y][x] = Yspring_sB;
+                       Cave[y+1][x] = Yalien_spring;
+                       Next[y+1][x] = Znormal;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       Boom[y+2][x-1] = Xblank;
+                       Boom[y+2][x] = Xblank;
+                       Boom[y+2][x+1] = Xblank;
+                       score += lev.alien_score;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xspring;
+                       Next[y][x] = Xspring;
+                       PLAY(SAMPLE_spring);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xeater_n:
+               if(Cave[y][x+1] == Xdiamond) {
+                       Cave[y][x+1] = Ydiamond_eat;
+                       Next[y][x+1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y+1][x] == Xdiamond) {
+                       Cave[y+1][x] = Ydiamond_eat;
+                       Next[y+1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x-1] == Xdiamond) {
+                       Cave[y][x-1] = Ydiamond_eat;
+                       Next[y][x-1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y-1][x] == Xdiamond) {
+                       Cave[y-1][x] = Ydiamond_eat;
+                       Next[y-1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               switch(Cave[y-1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yeater_nB;
+                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Yeater_nB;
+                       Cave[y-1][x] = Yeater_n;
+                       Next[y][x] = Xblank;
+                       Next[y-1][x] = Xeater_n;
+                       goto loop;
+               default:
+                       Next[y][x] = RANDOM & 1 ? Xeater_e : Xeater_w;
+                       PLAY(SAMPLE_eater);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xeater_e:
+               if(Cave[y+1][x] == Xdiamond) {
+                       Cave[y+1][x] = Ydiamond_eat;
+                       Next[y+1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x-1] == Xdiamond) {
+                       Cave[y][x-1] = Ydiamond_eat;
+                       Next[y][x-1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y-1][x] == Xdiamond) {
+                       Cave[y-1][x] = Ydiamond_eat;
+                       Next[y-1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x+1] == Xdiamond) {
+                       Cave[y][x+1] = Ydiamond_eat;
+                       Next[y][x+1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               switch(Cave[y][x+1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yeater_eB;
+                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Yeater_eB;
+                       Cave[y][x+1] = Yeater_e;
+                       Next[y][x] = Xblank;
+                       Next[y][x+1] = Xeater_e;
+                       goto loop;
+               default:
+                       Next[y][x] = RANDOM & 1 ? Xeater_n : Xeater_s;
+                       PLAY(SAMPLE_eater);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xeater_s:
+               if(Cave[y][x-1] == Xdiamond) {
+                       Cave[y][x-1] = Ydiamond_eat;
+                       Next[y][x-1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y-1][x] == Xdiamond) {
+                       Cave[y-1][x] = Ydiamond_eat;
+                       Next[y-1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x+1] == Xdiamond) {
+                       Cave[y][x+1] = Ydiamond_eat;
+                       Next[y][x+1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y+1][x] == Xdiamond) {
+                       Cave[y+1][x] = Ydiamond_eat;
+                       Next[y+1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yeater_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Yeater_sB;
+                       Cave[y+1][x] = Yeater_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xeater_s;
+                       goto loop;
+               default:
+                       Next[y][x] = RANDOM & 1 ? Xeater_e : Xeater_w;
+                       PLAY(SAMPLE_eater);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xeater_w:
+               if(Cave[y-1][x] == Xdiamond) {
+                       Cave[y-1][x] = Ydiamond_eat;
+                       Next[y-1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x+1] == Xdiamond) {
+                       Cave[y][x+1] = Ydiamond_eat;
+                       Next[y][x+1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y+1][x] == Xdiamond) {
+                       Cave[y+1][x] = Ydiamond_eat;
+                       Next[y+1][x] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               if(Cave[y][x-1] == Xdiamond) {
+                       Cave[y][x-1] = Ydiamond_eat;
+                       Next[y][x-1] = Xblank;
+                       play[SAMPLE_eater] = 1;
+                       goto loop;
+               }
+               switch(Cave[y][x-1]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yeater_wB;
+                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Yeater_wB;
+                       Cave[y][x-1] = Yeater_w;
+                       Next[y][x] = Xblank;
+                       Next[y][x-1] = Xeater_w;
+                       goto loop;
+               default:
+                       Next[y][x] = RANDOM & 1 ? Xeater_n : Xeater_s;
+                       PLAY(SAMPLE_eater);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xalien:
+               if(lev.wheel_cnt) {
+                       dx = lev.wheel_x;
+                       dy = lev.wheel_y;
+               } else if(ply1.alive && ply2.alive) {
+                       if( (ply1.x > x ? ply1.x - x : x - ply1.x) + (ply1.y > y ? ply1.y - y : y - ply1.y) < (ply2.x > x ? ply2.x - x : x - ply2.x) + (ply2.y > y ? ply2.y - y : y - ply2.y) ) {
+                               dx = ply1.x;
+                               dy = ply1.y;
+                       } else {
+                               dx = ply2.x;
+                               dy = ply2.y;
+                       }
+               } else if(ply1.alive) {
+                       dx = ply1.x;
+                       dy = ply1.y;
+               } else if(ply2.alive) {
+                       dx = ply2.x;
+                       dy = ply2.y;
+               } else {
+                       dx = 0;
+                       dy = 0;
+               }
+               if(RANDOM & 1) {
+                       if(y > dy) {
+                               switch(Cave[y-1][x]) {
+                               case Xacid_1:
+                               case Xacid_2:
+                               case Xacid_3:
+                               case Xacid_4:
+                               case Xacid_5:
+                               case Xacid_6:
+                               case Xacid_7:
+                               case Xacid_8:
+                                       Cave[y][x] = Yalien_nB;
+                                       if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                                       if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                                       Next[y][x] = Xblank;
+                                       PLAY(SAMPLE_acid);
+                                       goto loop;
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xplant:
+                               case Yplant:
+                               case Zplayer:
+                                       Cave[y][x] = Yalien_nB;
+                                       Cave[y-1][x] = Yalien_n;
+                                       Next[y][x] = Xblank;
+                                       Next[y-1][x] = Xalien_pause;
+                                       PLAY(SAMPLE_alien);
+                                       goto loop;
+                               }
+                       } else if(y < dy) {
+                               switch(Cave[y+1][x]) {
+                               case Xacid_1:
+                               case Xacid_2:
+                               case Xacid_3:
+                               case Xacid_4:
+                               case Xacid_5:
+                               case Xacid_6:
+                               case Xacid_7:
+                               case Xacid_8:
+                                       Cave[y][x] = Yalien_sB;
+                                       Next[y][x] = Xblank;
+                                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                                       PLAY(SAMPLE_acid);
+                                       goto loop;
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xplant:
+                               case Yplant:
+                               case Zplayer:
+                                       Cave[y][x] = Yalien_sB;
+                                       Cave[y+1][x] = Yalien_s;
+                                       Next[y][x] = Xblank;
+                                       Next[y+1][x] = Xalien_pause;
+                                       PLAY(SAMPLE_alien);
+                                       goto loop;
+                               }
+                       }
+               } else {
+                       if(x < dx) {
+                               switch(Cave[y][x+1]) {
+                               case Xacid_1:
+                               case Xacid_2:
+                               case Xacid_3:
+                               case Xacid_4:
+                               case Xacid_5:
+                               case Xacid_6:
+                               case Xacid_7:
+                               case Xacid_8:
+                                       Cave[y][x] = Yalien_eB;
+                                       if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                                       Next[y][x] = Xblank;
+                                       PLAY(SAMPLE_acid);
+                                       goto loop;
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xplant:
+                               case Yplant:
+                               case Zplayer:
+                                       Cave[y][x] = Yalien_eB;
+                                       Cave[y][x+1] = Yalien_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xalien_pause;
+                                       PLAY(SAMPLE_alien);
+                                       goto loop;
+                               }
+                       } else if(x > dx) {
+                               switch(Cave[y][x-1]) {
+                               case Xacid_1:
+                               case Xacid_2:
+                               case Xacid_3:
+                               case Xacid_4:
+                               case Xacid_5:
+                               case Xacid_6:
+                               case Xacid_7:
+                               case Xacid_8:
+                                       Cave[y][x] = Yalien_wB;
+                                       if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                                       if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                                       Next[y][x] = Xblank;
+                                       PLAY(SAMPLE_acid);
+                                       goto loop;
+                               case Xblank:
+                               case Yacid_splash_eB:
+                               case Yacid_splash_wB:
+                               case Xplant:
+                               case Yplant:
+                               case Zplayer:
+                                       Cave[y][x] = Yalien_wB;
+                                       Cave[y][x-1] = Yalien_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xalien_pause;
+                                       PLAY(SAMPLE_alien);
+                                       goto loop;
+                               }
+                       }
+               }
+               goto loop;
+       case Xalien_pause:
+               Next[y][x] = Xalien;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xemerald:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yemerald_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yemerald_sB;
+                       Cave[y+1][x] = Yemerald_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xemerald_fall;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xwonderwall:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xsteel_1:
+               case Xsteel_2:
+               case Xsteel_3:
+               case Xsteel_4:
+               case Xwall_1:
+               case Xwall_2:
+               case Xwall_3:
+               case Xwall_4:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Yemerald_eB;
+                                       Cave[y][x+1] = Yemerald_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xemerald_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Yemerald_wB;
+                                       Cave[y][x-1] = Yemerald_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xemerald_pause;
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Yemerald_wB;
+                                       Cave[y][x-1] = Yemerald_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xemerald_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Yemerald_eB;
+                                       Cave[y][x+1] = Yemerald_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xemerald_pause;
+                                       goto loop;
+                               }
+                       }
+               default:
+                       if(++lev.shine_cnt > 50) {
+                               lev.shine_cnt = RANDOM & 7;
+                               Cave[y][x] = Xemerald_shine;
+                       }
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xemerald_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yemerald_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Yemerald_sB;
+                       Cave[y+1][x] = Yemerald_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xemerald_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xemerald;
+                       Next[y][x] = Xemerald;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xemerald_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Yemerald_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Zplayer:
+                       Cave[y][x] = Yemerald_sB;
+                       Cave[y+1][x] = Yemerald_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xemerald_fall;
+                       goto loop;
+               case Xwonderwall:
+                       if(lev.wonderwall_time) {
+                               lev.wonderwall_state = 1;
+                               Cave[y][x] = Yemerald_sB;
+                               if(tab_blank[Cave[y+2][x]]) {
+                                       Cave[y+2][x] = Ydiamond_s;
+                                       Next[y+2][x] = Xdiamond_fall;
+                               }
+                               Next[y][x] = Xblank;
+                               play[SAMPLE_squash] = 1;
+                               goto loop;
+                       }
+               default:
+                       Cave[y][x] = Xemerald;
+                       Next[y][x] = Xemerald;
+                       PLAY(SAMPLE_diamond);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xdiamond:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ydiamond_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ydiamond_sB;
+                       Cave[y+1][x] = Ydiamond_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xdiamond_fall;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xwonderwall:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xsteel_1:
+               case Xsteel_2:
+               case Xsteel_3:
+               case Xsteel_4:
+               case Xwall_1:
+               case Xwall_2:
+               case Xwall_3:
+               case Xwall_4:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ydiamond_eB;
+                                       Cave[y][x+1] = Ydiamond_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xdiamond_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ydiamond_wB;
+                                       Cave[y][x-1] = Ydiamond_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xdiamond_pause;
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ydiamond_wB;
+                                       Cave[y][x-1] = Ydiamond_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xdiamond_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ydiamond_eB;
+                                       Cave[y][x+1] = Ydiamond_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xdiamond_pause;
+                                       goto loop;
+                               }
+                       }
+               default:
+                       if(++lev.shine_cnt > 50) {
+                               lev.shine_cnt = RANDOM & 7;
+                               Cave[y][x] = Xdiamond_shine;
+                       }
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xdiamond_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ydiamond_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ydiamond_sB;
+                       Cave[y+1][x] = Ydiamond_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xdiamond_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xdiamond;
+                       Next[y][x] = Xdiamond;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xdiamond_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ydiamond_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Zplayer:
+                       Cave[y][x] = Ydiamond_sB;
+                       Cave[y+1][x] = Ydiamond_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xdiamond_fall;
+                       goto loop;
+               case Xwonderwall:
+                       if(lev.wonderwall_time) {
+                               lev.wonderwall_state = 1;
+                               Cave[y][x] = Ydiamond_sB;
+                               if(tab_blank[Cave[y+2][x]]) {
+                                       Cave[y+2][x] = Ystone_s;
+                                       Next[y+2][x] = Xstone_fall;
+                               }
+                               Next[y][x] = Xblank;
+                               play[SAMPLE_squash] = 1;
+                               goto loop;
+                       }
+               default:
+                       Cave[y][x] = Xdiamond;
+                       Next[y][x] = Xdiamond;
+                       PLAY(SAMPLE_diamond);
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xdrip_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ydrip_s1B;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xdrip_stretchB;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+               case Xplant:
+               case Yplant:
+               case Zplayer:
+                       Cave[y][x] = Ydrip_s1B;
+                       Cave[y+1][x] = Ydrip_s1;
+                       Next[y][x] = Xdrip_stretchB;
+                       Next[y+1][x] = Xdrip_stretch;
+                       goto loop;
+               default:
+                       switch(RANDOM & 7) {
+                       case 0: temp = Xameuba_1; break;
+                       case 1: temp = Xameuba_2; break;
+                       case 2: temp = Xameuba_3; break;
+                       case 3: temp = Xameuba_4; break;
+                       case 4: temp = Xameuba_5; break;
+                       case 5: temp = Xameuba_6; break;
+                       case 6: temp = Xameuba_7; break;
+                       case 7: temp = Xameuba_8; break;
+                       }
+                       Cave[y][x] = temp;
+                       Next[y][x] = temp;
+                       play[SAMPLE_drip] = 1;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xdrip_stretch:
+               Cave[y][x] = Ydrip_s2;
+               Next[y][x] = Xdrip_fall;
+               goto loop;
+       case Xdrip_stretchB:
+               Cave[y][x] = Ydrip_s2B;
+               Next[y][x] = Xblank;
+               goto loop;
+       case Xdrip_eat:
+               Next[y][x] = Xdrip_fall;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xbomb:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybomb_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ybomb_sB;
+                       Cave[y+1][x] = Ybomb_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xbomb_fall;
+                       goto loop;
+               case Xspring:
+               case Xspring_pause:
+               case Xspring_e:
+               case Xspring_w:
+               case Xandroid:
+               case Xandroid_1_n:
+               case Xandroid_2_n:
+               case Xandroid_1_e:
+               case Xandroid_2_e:
+               case Xandroid_1_s:
+               case Xandroid_2_s:
+               case Xandroid_1_w:
+               case Xandroid_2_w:
+               case Xstone:
+               case Xstone_pause:
+               case Xemerald:
+               case Xemerald_pause:
+               case Xdiamond:
+               case Xdiamond_pause:
+               case Xbomb:
+               case Xbomb_pause:
+               case Xballoon:
+               case Xacid_ne:
+               case Xacid_nw:
+               case Xball_1:
+               case Xball_2:
+               case Xnut:
+               case Xnut_pause:
+               case Xgrow_ns:
+               case Xgrow_ew:
+               case Xkey_1:
+               case Xkey_2:
+               case Xkey_3:
+               case Xkey_4:
+               case Xkey_5:
+               case Xkey_6:
+               case Xkey_7:
+               case Xkey_8:
+               case Xbumper:
+               case Xswitch:
+               case Xround_wall_1:
+               case Xround_wall_2:
+               case Xround_wall_3:
+               case Xround_wall_4:
+                       if(RANDOM & 1) {
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ybomb_eB;
+                                       Cave[y][x+1] = Ybomb_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xbomb_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ybomb_wB;
+                                       Cave[y][x-1] = Ybomb_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xbomb_pause;
+                                       goto loop;
+                               }
+                       } else {
+                               if(tab_blank[Cave[y][x-1]] && tab_acid[Cave[y+1][x-1]]) {
+                                       Cave[y][x] = Ybomb_wB;
+                                       Cave[y][x-1] = Ybomb_w;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x-1] = Xbomb_pause;
+                                       goto loop;
+                               }
+                               if(tab_blank[Cave[y][x+1]] && tab_acid[Cave[y+1][x+1]]) {
+                                       Cave[y][x] = Ybomb_eB;
+                                       Cave[y][x+1] = Ybomb_e;
+                                       Next[y][x] = Xblank;
+                                       Next[y][x+1] = Xbomb_pause;
+                                       goto loop;
+                               }
+                       }
+               default:
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbomb_pause:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybomb_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ybomb_sB;
+                       Cave[y+1][x] = Ybomb_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xbomb_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Xbomb;
+                       Next[y][x] = Xbomb;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xbomb_fall:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Ybomb_sB;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xblank;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Ybomb_sB;
+                       Cave[y+1][x] = Ybomb_s;
+                       Next[y][x] = Xblank;
+                       Next[y+1][x] = Xbomb_fall;
+                       goto loop;
+               default:
+                       Cave[y][x] = Ybomb_eat;
+                       Next[y][x] = Znormal;
+                       Boom[y-1][x-1] = Xblank;
+                       Boom[y-1][x] = Xblank;
+                       Boom[y-1][x+1] = Xblank;
+                       Boom[y][x-1] = Xblank;
+                       Boom[y][x] = Xblank;
+                       Boom[y][x+1] = Xblank;
+                       Boom[y+1][x-1] = Xblank;
+                       Boom[y+1][x] = Xblank;
+                       Boom[y+1][x+1] = Xblank;
+                       goto loop;
+               }
+/* ---------------------------------------------------------------------- */
+       case Xballoon:
+               if(lev.wind_cnt == 0) goto loop;
+               switch(lev.wind_direction) {
+               case 0: /* north */
+                       switch(Cave[y-1][x]) {
+                       case Xacid_1:
+                       case Xacid_2:
+                       case Xacid_3:
+                       case Xacid_4:
+                       case Xacid_5:
+                       case Xacid_6:
+                       case Xacid_7:
+                       case Xacid_8:
+                               Cave[y][x] = Yballoon_nB;
+                               if(Cave[y-2][x+1] == Xblank) Cave[y-2][x+1] = Yacid_splash_eB;
+                               if(Cave[y-2][x-1] == Xblank) Cave[y-2][x-1] = Yacid_splash_wB;
+                               Next[y][x] = Xblank;
+                               PLAY(SAMPLE_acid);
+                               goto loop;
+                       case Xblank:
+                       case Yacid_splash_eB:
+                       case Yacid_splash_wB:
+                               Cave[y][x] = Yballoon_nB;
+                               Cave[y-1][x] = Yballoon_n;
+                               Next[y][x] = Xblank;
+                               Next[y-1][x] = Xballoon;
+                               goto loop;
+                       default:
+                               goto loop;
+                       }
+               case 1: /* east */
+                       switch(Cave[y][x+1]) {
+                       case Xacid_1:
+                       case Xacid_2:
+                       case Xacid_3:
+                       case Xacid_4:
+                       case Xacid_5:
+                       case Xacid_6:
+                       case Xacid_7:
+                       case Xacid_8:
+                               Cave[y][x] = Yballoon_eB;
+                               if(Cave[y-1][x+2] == Xblank) Cave[y-1][x+2] = Yacid_splash_eB;
+                               if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_wB;
+                               Next[y][x] = Xblank;
+                               PLAY(SAMPLE_acid);
+                               goto loop;
+                       case Xblank:
+                       case Yacid_splash_eB:
+                       case Yacid_splash_wB:
+                               Cave[y][x] = Yballoon_eB;
+                               Cave[y][x+1] = Yballoon_e;
+                               Next[y][x] = Xblank;
+                               Next[y][x+1] = Xballoon;
+                               goto loop;
+                       default:
+                               goto loop;
+                       }
+               case 2: /* south */
+                       switch(Cave[y+1][x]) {
+                       case Xacid_1:
+                       case Xacid_2:
+                       case Xacid_3:
+                       case Xacid_4:
+                       case Xacid_5:
+                       case Xacid_6:
+                       case Xacid_7:
+                       case Xacid_8:
+                               Cave[y][x] = Yballoon_sB;
+                               if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                               if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                               Next[y][x] = Xblank;
+                               PLAY(SAMPLE_acid);
+                               goto loop;
+                       case Xblank:
+                       case Yacid_splash_eB:
+                       case Yacid_splash_wB:
+                               Cave[y][x] = Yballoon_sB;
+                               Cave[y+1][x] = Yballoon_s;
+                               Next[y][x] = Xblank;
+                               Next[y+1][x] = Xballoon;
+                               goto loop;
+                       default:
+                               goto loop;
+                       }
+               case 3: /* west */
+                       switch(Cave[y][x-1]) {
+                       case Xacid_1:
+                       case Xacid_2:
+                       case Xacid_3:
+                       case Xacid_4:
+                       case Xacid_5:
+                       case Xacid_6:
+                       case Xacid_7:
+                       case Xacid_8:
+                               Cave[y][x] = Yballoon_wB;
+                               if(Cave[y-1][x] == Xblank) Cave[y-1][x] = Yacid_splash_eB;
+                               if(Cave[y-1][x-2] == Xblank) Cave[y-1][x-2] = Yacid_splash_wB;
+                               Next[y][x] = Xblank;
+                               PLAY(SAMPLE_acid);
+                               goto loop;
+                       case Xblank:
+                       case Yacid_splash_eB:
+                       case Yacid_splash_wB:
+                               Cave[y][x] = Yballoon_wB;
+                               Cave[y][x-1] = Yballoon_w;
+                               Next[y][x] = Xblank;
+                               Next[y][x-1] = Xballoon;
+                               goto loop;
+                       default:
+                               goto loop;
+                       }
+               }
+/* ---------------------------------------------------------------------- */
+       case Xacid_1:
+               Next[y][x] = Xacid_2;
+               goto loop;
+       case Xacid_2:
+               Next[y][x] = Xacid_3;
+               goto loop;
+       case Xacid_3:
+               Next[y][x] = Xacid_4;
+               goto loop;
+       case Xacid_4:
+               Next[y][x] = Xacid_5;
+               goto loop;
+       case Xacid_5:
+               Next[y][x] = Xacid_6;
+               goto loop;
+       case Xacid_6:
+               Next[y][x] = Xacid_7;
+               goto loop;
+       case Xacid_7:
+               Next[y][x] = Xacid_8;
+               goto loop;
+       case Xacid_8:
+               Next[y][x] = Xacid_1;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xball_1:
+               if(lev.ball_state == 0) goto loop;
+               Cave[y][x] = Xball_1B;
+               Next[y][x] = Xball_2;
+               if(lev.ball_cnt) goto loop;
+               goto ball_common;
+       case Xball_2:
+               if(lev.ball_state == 0) goto loop;
+               Cave[y][x] = Xball_2B;
+               Next[y][x] = Xball_1;
+               if(lev.ball_cnt) goto loop;
+               goto ball_common;
+       ball_common:
+               play[SAMPLE_ball] = 1;
+               if(lev.ball_random) {
+                       switch(RANDOM & 7) {
+                       case 0:
+                               if(lev.ball_array[lev.ball_pos][0] != Xblank && tab_blank[Cave[y-1][x-1]]) {
+                                       Cave[y-1][x-1] = Yball_eat;
+                                       Next[y-1][x-1] = lev.ball_array[lev.ball_pos][0];
+                               }
+                               break;
+                       case 1:
+                               if(lev.ball_array[lev.ball_pos][1] != Xblank && tab_blank[Cave[y-1][x]]) {
+                                       Cave[y-1][x] = Yball_eat;
+                                       Next[y-1][x] = lev.ball_array[lev.ball_pos][1];
+                               }
+                               break;
+                       case 2:
+                               if(lev.ball_array[lev.ball_pos][2] != Xblank && tab_blank[Cave[y-1][x+1]]) {
+                                       Cave[y-1][x+1] = Yball_eat;
+                                       Next[y-1][x+1] = lev.ball_array[lev.ball_pos][2];
+                               }
+                               break;
+                       case 3:
+                               if(lev.ball_array[lev.ball_pos][3] != Xblank && tab_blank[Cave[y][x-1]]) {
+                                       Cave[y][x-1] = Yball_eat;
+                                       Next[y][x-1] = lev.ball_array[lev.ball_pos][3];
+                               }
+                               break;
+                       case 4:
+                               if(lev.ball_array[lev.ball_pos][4] != Xblank && tab_blank[Cave[y][x+1]]) {
+                                       Cave[y][x+1] = Yball_eat;
+                                       Next[y][x+1] = lev.ball_array[lev.ball_pos][4];
+                               }
+                               break;
+                       case 5:
+                               if(lev.ball_array[lev.ball_pos][5] != Xblank && tab_blank[Cave[y+1][x-1]]) {
+                                       Cave[y+1][x-1] = Yball_eat;
+                                       Next[y+1][x-1] = lev.ball_array[lev.ball_pos][5];
+                               }
+                               break;
+                       case 6:
+                               if(lev.ball_array[lev.ball_pos][6] != Xblank && tab_blank[Cave[y+1][x]]) {
+                                       Cave[y+1][x] = Yball_eat;
+                                       Next[y+1][x] = lev.ball_array[lev.ball_pos][6];
+                               }
+                               break;
+                       case 7:
+                               if(lev.ball_array[lev.ball_pos][7] != Xblank && tab_blank[Cave[y+1][x+1]]) {
+                                       Cave[y+1][x+1] = Yball_eat;
+                                       Next[y+1][x+1] = lev.ball_array[lev.ball_pos][7];
+                               }
+                               break;
+                       }
+               } else {
+                       if(lev.ball_array[lev.ball_pos][0] != Xblank && tab_blank[Cave[y-1][x-1]]) {
+                               Cave[y-1][x-1] = Yball_eat;
+                               Next[y-1][x-1] = lev.ball_array[lev.ball_pos][0];
+                       }
+                       if(lev.ball_array[lev.ball_pos][1] != Xblank && tab_blank[Cave[y-1][x]]) {
+                               Cave[y-1][x] = Yball_eat;
+                               Next[y-1][x] = lev.ball_array[lev.ball_pos][1];
+                       }
+                       if(lev.ball_array[lev.ball_pos][2] != Xblank && tab_blank[Cave[y-1][x+1]]) {
+                               Cave[y-1][x+1] = Yball_eat;
+                               Next[y-1][x+1] = lev.ball_array[lev.ball_pos][2];
+                       }
+                       if(lev.ball_array[lev.ball_pos][3] != Xblank && tab_blank[Cave[y][x-1]]) {
+                               Cave[y][x-1] = Yball_eat;
+                               Next[y][x-1] = lev.ball_array[lev.ball_pos][3];
+                       }
+                       if(lev.ball_array[lev.ball_pos][4] != Xblank && tab_blank[Cave[y][x+1]]) {
+                               Cave[y][x+1] = Yball_eat;
+                               Next[y][x+1] = lev.ball_array[lev.ball_pos][4];
+                       }
+                       if(lev.ball_array[lev.ball_pos][5] != Xblank && tab_blank[Cave[y+1][x-1]]) {
+                               Cave[y+1][x-1] = Yball_eat;
+                               Next[y+1][x-1] = lev.ball_array[lev.ball_pos][5];
+                       }
+                       if(lev.ball_array[lev.ball_pos][6] != Xblank && tab_blank[Cave[y+1][x]]) {
+                               Cave[y+1][x] = Yball_eat;
+                               Next[y+1][x] = lev.ball_array[lev.ball_pos][6];
+                       }
+                       if(lev.ball_array[lev.ball_pos][7] != Xblank && tab_blank[Cave[y+1][x+1]]) {
+                               Cave[y+1][x+1] = Yball_eat;
+                               Next[y+1][x+1] = lev.ball_array[lev.ball_pos][7];
+                       }
+               }
+               lev.ball_pos = (lev.ball_pos + 1) & 7;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xgrow_ns:
+               if(tab_blank[Cave[y-1][x]]) {
+                       Cave[y-1][x] = Ygrow_ns_eat;
+                       Next[y-1][x] = Xgrow_ns;
+                       play[SAMPLE_grow] = 1;
+               }
+               if(tab_blank[Cave[y+1][x]]) {
+                       Cave[y+1][x] = Ygrow_ns_eat;
+                       Next[y+1][x] = Xgrow_ns;
+                       play[SAMPLE_grow] = 1;
+               }
+               goto loop;
+       case Xgrow_ew:
+               if(tab_blank[Cave[y][x+1]]) {
+                       Cave[y][x+1] = Ygrow_ew_eat;
+                       Next[y][x+1] = Xgrow_ew;
+                       play[SAMPLE_grow] = 1;
+               }
+               if(tab_blank[Cave[y][x-1]]) {
+                       Cave[y][x-1] = Ygrow_ew_eat;
+                       Next[y][x-1] = Xgrow_ew;
+                       play[SAMPLE_grow] = 1;
+               }
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xwonderwall:
+               if(lev.wonderwall_time && lev.wonderwall_state) {
+                       Cave[y][x] = XwonderwallB;
+                       play[SAMPLE_wonder] = 1;
+               }
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xexit:
+               if(lev.required > 0) goto loop;
+               temp = RANDOM & 63;
+               if(temp < 21) {
+                       Cave[y][x] = Xexit_1;
+                       Next[y][x] = Xexit_2;
+               } else if(temp < 42) {
+                       Cave[y][x] = Xexit_2;
+                       Next[y][x] = Xexit_3;
+               } else {
+                       Cave[y][x] = Xexit_3;
+                       Next[y][x] = Xexit_1;
+               }
+               goto loop;
+       case Xexit_1:
+               Next[y][x] = Xexit_2;
+               goto loop;
+       case Xexit_2:
+               Next[y][x] = Xexit_3;
+               goto loop;
+       case Xexit_3:
+               Next[y][x] = Xexit_1;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xdynamite_1:
+               play[SAMPLE_tick] = 1;
+               Next[y][x] = Xdynamite_2;
+               goto loop;
+       case Xdynamite_2:
+               play[SAMPLE_tick] = 1;
+               Next[y][x] = Xdynamite_3;
+               goto loop;
+       case Xdynamite_3:
+               play[SAMPLE_tick] = 1;
+               Next[y][x] = Xdynamite_4;
+               goto loop;
+       case Xdynamite_4:
+               play[SAMPLE_tick] = 1;
+               Next[y][x] = Zdynamite;
+               Boom[y-1][x-1] = Xblank;
+               Boom[y-1][x] = Xblank;
+               Boom[y-1][x+1] = Xblank;
+               Boom[y][x-1] = Xblank;
+               Boom[y][x] = Xblank;
+               Boom[y][x+1] = Xblank;
+               Boom[y+1][x-1] = Xblank;
+               Boom[y+1][x] = Xblank;
+               Boom[y+1][x+1] = Xblank;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xwheel:
+               if(lev.wheel_cnt && x == lev.wheel_x && y == lev.wheel_y) Cave[y][x] = XwheelB;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xswitch:
+               if(lev.ball_state) Cave[y][x] = XswitchB;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xsand_stone:
+               switch(Cave[y+1][x]) {
+               case Xacid_1:
+               case Xacid_2:
+               case Xacid_3:
+               case Xacid_4:
+               case Xacid_5:
+               case Xacid_6:
+               case Xacid_7:
+               case Xacid_8:
+                       Cave[y][x] = Xsand_stonesand_3;
+                       if(Cave[y][x+1] == Xblank) Cave[y][x+1] = Yacid_splash_eB;
+                       if(Cave[y][x-1] == Xblank) Cave[y][x-1] = Yacid_splash_wB;
+                       Next[y][x] = Xsand_stonesand_4;
+                       PLAY(SAMPLE_acid);
+                       goto loop;
+               case Xblank:
+               case Yacid_splash_eB:
+               case Yacid_splash_wB:
+                       Cave[y][x] = Xsand_stonesand_3;
+                       Cave[y+1][x] = Xsand_stoneout_1;
+                       Next[y][x] = Xsand_stonesand_4;
+                       Next[y+1][x] = Xsand_stoneout_2;
+                       goto loop;
+               case Xsand:
+                       Cave[y][x] = Xsand_stonesand_1;
+                       Cave[y+1][x] = Xsand_sandstone_1;
+                       Next[y][x] = Xsand_stonesand_2;
+                       Next[y+1][x] = Xsand_sandstone_2;
+                       goto loop;
+               default:
+                       goto loop;
+               }
+       case Xsand_stonein_1:
+               Next[y][x] = Xsand_stonein_2;
+               goto loop;
+       case Xsand_stonein_2:
+               Next[y][x] = Xsand_stonein_3;
+               goto loop;
+       case Xsand_stonein_3:
+               Next[y][x] = Xsand_stonein_4;
+               goto loop;
+       case Xsand_stonein_4:
+               Next[y][x] = Xblank;
+               goto loop;
+       case Xsand_stonesand_1:
+               Next[y][x] = Xsand_stonesand_2;
+               goto loop;
+       case Xsand_stonesand_2:
+               Next[y][x] = Xsand_stonesand_3;
+               goto loop;
+       case Xsand_stonesand_3:
+               Next[y][x] = Xsand_stonesand_4;
+               goto loop;
+       case Xsand_stonesand_4:
+               Next[y][x] = Xsand;
+               goto loop;
+       case Xsand_stoneout_1:
+               Next[y][x] = Xsand_stoneout_2;
+               goto loop;
+       case Xsand_stoneout_2:
+               Next[y][x] = Xstone_fall;
+               goto loop;
+       case Xsand_sandstone_1:
+               Next[y][x] = Xsand_sandstone_2;
+               goto loop;
+       case Xsand_sandstone_2:
+               Next[y][x] = Xsand_sandstone_3;
+               goto loop;
+       case Xsand_sandstone_3:
+               Next[y][x] = Xsand_sandstone_4;
+               goto loop;
+       case Xsand_sandstone_4:
+               Next[y][x] = Xsand_stone;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xdripper:
+               if(lev.lenses_cnt) Cave[y][x] = XdripperB;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xfake_blank:
+               if(lev.lenses_cnt) Cave[y][x] = Xfake_blankB;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xfake_grass:
+               if(lev.magnify_cnt) Cave[y][x] = Xfake_grassB;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xfake_door_1:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_1;
+               goto loop;
+       case Xfake_door_2:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_2;
+               goto loop;
+       case Xfake_door_3:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_3;
+               goto loop;
+       case Xfake_door_4:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_4;
+               goto loop;
+       case Xfake_door_5:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_5;
+               goto loop;
+       case Xfake_door_6:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_6;
+               goto loop;
+       case Xfake_door_7:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_7;
+               goto loop;
+       case Xfake_door_8:
+               if(lev.magnify_cnt) Cave[y][x] = Xdoor_8;
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case Xboom_bug:
+       bug_boom:
+               Next[y][x] = Znormal;
+               Boom[y-1][x-1] = Xemerald;
+               Boom[y-1][x] = Xemerald;
+               Boom[y-1][x+1] = Xemerald;
+               Boom[y][x-1] = Xemerald;
+               Boom[y][x] = Xdiamond;
+               Boom[y][x+1] = Xemerald;
+               Boom[y+1][x-1] = Xemerald;
+               Boom[y+1][x] = Xemerald;
+               Boom[y+1][x+1] = Xemerald;
+               goto loop;
+       case Xboom_bomb:
+       tank_boom:
+               Next[y][x] = Znormal;
+               Boom[y-1][x-1] = Xblank;
+               Boom[y-1][x] = Xblank;
+               Boom[y-1][x+1] = Xblank;
+               Boom[y][x-1] = Xblank;
+               Boom[y][x] = Xblank;
+               Boom[y][x+1] = Xblank;
+               Boom[y+1][x-1] = Xblank;
+               Boom[y+1][x] = Xblank;
+               Boom[y+1][x+1] = Xblank;
+               goto loop;
+       case Xboom_android:
+       case Xboom_1:
+               Next[y][x] = Xboom_2;
+               play[SAMPLE_boom] = 1;
+               goto loop;
+       case Xboom_2:
+               Next[y][x] = Boom[y][x];
+               goto loop;
+/* ---------------------------------------------------------------------- */
+       case ZBORDER:
+               if(++y < HEIGHT - 1) {
+                       x = 0;
+                       cave_cache = Cave[y];
+                       goto loop;
+               }
+               goto done;
+       }
+
+#undef RANDOM
+#undef PLAY
+#undef PLAY_FORCE
+
+done:
+       if(ply1.alive || ply2.alive) lev.score += score; /* only get a score if someone is alive */
+       Random = random;
+       {
+               void *temp = Cave; Cave = Next; Next = Draw; Draw = temp; /* triple buffering */
+       }
+}