fixed broken screen blitting if cave is smaller than screen for EM engine

[rocksndiamonds.git] / src / game_em / graphics.c

diff --git a/src/game_em/graphics.c b/src/game_em/graphics.c
index ac219b86feca0669c0d5dffbcf0b836b574c655f..c03267a1e7e84fa9ab9fda27a34e70376306adda 100644 (file)
--- a/src/game_em/graphics.c
+++ b/src/game_em/graphics.c
@@ -25,12 +25,15 @@
 #define VALID_SCREEN_Y(y)      ((y) < MIN_SCREEN_Y ? MIN_SCREEN_Y :    \
                                 (y) > MAX_SCREEN_Y ? MAX_SCREEN_Y : (y))
 
-#define PLAYER_SCREEN_X(p)     (((7 - frame) * ply[p].oldx +           \
-                                 (1 + frame) * ply[p].x) * TILEX / 8   \
-                                - ((SCR_FIELDX - 1) * TILEX) / 2)
-#define PLAYER_SCREEN_Y(p)     (((7 - frame) * ply[p].oldy +           \
-                                 (1 + frame) * ply[p].y) * TILEY / 8   \
-                                - ((SCR_FIELDY - 1) * TILEY) / 2)
+#define PLAYER_POS_X(nr)       (((7 - frame) * ply[nr].oldx +          \
+                                 (1 + frame) * ply[nr].x) * TILEX / 8)
+#define PLAYER_POS_Y(nr)       (((7 - frame) * ply[nr].oldy +          \
+                                 (1 + frame) * ply[nr].y) * TILEY / 8)
+
+#define PLAYER_SCREEN_X(nr)    (PLAYER_POS_X(nr) -                     \
+                                (SCR_FIELDX - 1) * TILEX / 2)
+#define PLAYER_SCREEN_Y(nr)    (PLAYER_POS_Y(nr) -                     \
+                                (SCR_FIELDY - 1) * TILEY / 2)
 
 #define USE_EXTENDED_GRAPHICS_ENGINE           1
 
@@ -43,7 +46,7 @@ static int screen_tiles[MAX_PLAYFIELD_WIDTH + 2][MAX_PLAYFIELD_HEIGHT + 2];
 static int crumbled_state[MAX_PLAYFIELD_WIDTH + 2][MAX_PLAYFIELD_HEIGHT + 2];
 
 /* graphic info for game objects/frames and players/actions/frames */
-struct GraphicInfo_EM graphic_info_em_object[TILE_MAX][8];
+struct GraphicInfo_EM graphic_info_em_object[GAME_TILE_MAX][8];
 struct GraphicInfo_EM graphic_info_em_player[MAX_PLAYERS][PLY_MAX][8];
 
 int getFieldbufferOffsetX_EM(void)
@@ -70,44 +73,40 @@ void BlitScreenToBitmap_EM(Bitmap *target_bitmap)
   int sy = SY + (full_ysize < ysize ? (ysize - full_ysize) / 2 : 0);
   int sxsize = (full_xsize < xsize ? full_xsize : xsize);
   int sysize = (full_ysize < ysize ? full_ysize : ysize);
+  int xxsize = MAX_BUF_XSIZE * TILEX - x;
+  int yysize = MAX_BUF_YSIZE * TILEY - y;
+  int xoffset = 2 * CAVE_BUFFER_XOFFSET * TILEX;
+  int yoffset = 2 * CAVE_BUFFER_YOFFSET * TILEY;
 
-  if (x < 2 * TILEX && y < 2 * TILEY)
+  if (x < xoffset && y < yoffset)
   {
-    BlitBitmap(screenBitmap, target_bitmap, x, y,
-              sxsize, sysize, sx, sy);
+    BlitBitmap(screenBitmap, target_bitmap, x, y, sxsize, sysize,
+              sx, sy);
   }
-  else if (x < 2 * TILEX && y >= 2 * TILEY)
+  else if (x < xoffset && y >= yoffset)
   {
-    BlitBitmap(screenBitmap, target_bitmap, x, y,
-              sxsize, MAX_BUF_YSIZE * TILEY - y,
+    BlitBitmap(screenBitmap, target_bitmap, x, y, sxsize, yysize,
               sx, sy);
-    BlitBitmap(screenBitmap, target_bitmap, x, 0,
-              sxsize, y - 2 * TILEY,
-              sx, sy + MAX_BUF_YSIZE * TILEY - y);
+    BlitBitmap(screenBitmap, target_bitmap, x, 0, sxsize, y - yoffset,
+              sx, sy + yysize);
   }
-  else if (x >= 2 * TILEX && y < 2 * TILEY)
+  else if (x >= xoffset && y < yoffset)
   {
-    BlitBitmap(screenBitmap, target_bitmap, x, y,
-              MAX_BUF_XSIZE * TILEX - x, sysize,
+    BlitBitmap(screenBitmap, target_bitmap, x, y, xxsize, sysize,
               sx, sy);
-    BlitBitmap(screenBitmap, target_bitmap, 0, y,
-              x - 2 * TILEX, sysize,
-              sx + MAX_BUF_XSIZE * TILEX - x, sy);
+    BlitBitmap(screenBitmap, target_bitmap, 0, y, x - xoffset, sysize,
+              sx + xxsize, sy);
   }
   else
   {
-    BlitBitmap(screenBitmap, target_bitmap, x, y,
-              MAX_BUF_XSIZE * TILEX - x, MAX_BUF_YSIZE * TILEY - y,
+    BlitBitmap(screenBitmap, target_bitmap, x, y, xxsize, yysize,
               sx, sy);
-    BlitBitmap(screenBitmap, target_bitmap, 0, y,
-              x - 2 * TILEX, MAX_BUF_YSIZE * TILEY - y,
-              sx + MAX_BUF_XSIZE * TILEX - x, sy);
-    BlitBitmap(screenBitmap, target_bitmap, x, 0,
-              MAX_BUF_XSIZE * TILEX - x, y - 2 * TILEY,
-              sx, sy + MAX_BUF_YSIZE * TILEY - y);
-    BlitBitmap(screenBitmap, target_bitmap, 0, 0,
-              x - 2 * TILEX, y - 2 * TILEY,
-              sx + MAX_BUF_XSIZE * TILEX - x, sy + MAX_BUF_YSIZE * TILEY - y);
+    BlitBitmap(screenBitmap, target_bitmap, 0, y, x - xoffset, yysize,
+              sx + xxsize, sy);
+    BlitBitmap(screenBitmap, target_bitmap, x, 0, xxsize, y - yoffset,
+              sx, sy + yysize);
+    BlitBitmap(screenBitmap, target_bitmap, 0, 0, x - xoffset, y - yoffset,
+              sx + xxsize, sy + yysize);
   }
 }
 
@@ -377,8 +376,8 @@ static void blitplayer(int nr)
     return;
 
   /* x1/y1 are left/top and x2/y2 are right/down part of the player movement */
-  x1 = ((7 - frame) * ply[nr].oldx + (1 + frame) * ply[nr].x) * TILEX / 8;
-  y1 = ((7 - frame) * ply[nr].oldy + (1 + frame) * ply[nr].y) * TILEY / 8;
+  x1 = PLAYER_POS_X(nr);
+  y1 = PLAYER_POS_Y(nr);
   x2 = x1 + TILEX - 1;
   y2 = y1 + TILEY - 1;