X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=blobdiff_plain;f=src%2Fgame_mm%2Fmm_tools.c;h=12ca83cee8e22041ee608e659ad1f106c5d1ac3a;hp=7799174ec0dc5b3f89f04d95f18cead0679de384;hb=HEAD;hpb=e227a361d63ac92e9ed1ceb276f739fa3edc45be

diff --git a/src/game_mm/mm_tools.c b/src/game_mm/mm_tools.c
index 7799174e..12ca83ce 100644
--- a/src/game_mm/mm_tools.c
+++ b/src/game_mm/mm_tools.c
@@ -4,11 +4,13 @@
 // (c) 1994-2017 by Artsoft Entertainment
 //     		    Holger Schemel
 //		    info@artsoft.org
-//		    http://www.artsoft.org/
+//		    https://www.artsoft.org/
 // ----------------------------------------------------------------------------
 // mm_tools.c
 // ============================================================================
 
+#include <time.h>
+
 #include "main_mm.h"
 
 #include "mm_main.h"
@@ -27,8 +29,8 @@ void SetDrawtoField_MM(int mode)
   // for convenience, absolute screen position to centered level playfield
   cSX = SX + dSX;
   cSY = SY + dSY;
-  cSX2 = SX + dSX + 2;	// including playfield border
-  cSY2 = SY + dSY + 2;	// including playfield border
+  cSX2 = SX + dSX + 2;		// including half laser line size
+  cSY2 = SY + dSY + 2;		// including half laser line size
 
   if (mode == DRAW_TO_BACKBUFFER)
   {
@@ -39,9 +41,16 @@ void SetDrawtoField_MM(int mode)
   SetTileCursorSXSY(cSX, cSY);
 }
 
+void BackToFront_MM(void)
+{
+  BlitScreenToBitmap_MM(backbuffer);
+
+  BackToFront();
+}
+
 void ClearWindow(void)
 {
-  ClearRectangle(backbuffer, REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE);
+  ClearRectangle(drawto_mm, REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE);
 
   SetDrawtoField(DRAW_TO_BACKBUFFER);
   SetDrawtoField_MM(DRAW_TO_BACKBUFFER);
@@ -56,22 +65,26 @@ void DrawGraphicAnimation_MM(int x, int y, int graphic, int frame)
 
   getGraphicSource(graphic, frame, &bitmap, &src_x, &src_y);
 
-  BlitBitmap(bitmap, drawto_field, src_x, src_y, TILEX, TILEY,
+  BlitBitmap(bitmap, drawto_mm, src_x, src_y, TILEX, TILEY,
 	     cFX + x * TILEX, cFY + y * TILEY);
 }
 
 void DrawGraphic_MM(int x, int y, int graphic)
 {
 #if DEBUG
-  if (!IN_SCR_FIELD(x,y))
+  if (!IN_SCR_FIELD(x, y))
   {
-    printf("DrawGraphic_MM(): x = %d, y = %d, graphic = %d\n",x,y,graphic);
-    printf("DrawGraphic_MM(): This should never happen!\n");
+    Debug("game:mm:DrawGraphic_MM", "x = %d, y = %d, graphic = %d",
+	  x, y, graphic);
+    Debug("game:mm:DrawGraphic_MM", "This should never happen!");
+
     return;
   }
 #endif
 
-  DrawGraphicExt_MM(drawto_field, cFX + x * TILEX, cFY + y * TILEY, graphic);
+  int frame = getGraphicAnimationFrameXY(graphic, x, y);
+
+  DrawGraphicAnimation_MM(x, y, graphic, frame);
 
   MarkTileDirty(x, y);
 }
@@ -86,25 +99,27 @@ void DrawGraphicExt_MM(DrawBuffer *d, int x, int y, int graphic)
   BlitBitmap(bitmap, d, src_x, src_y, TILEX, TILEY, x, y);
 }
 
-void DrawGraphicThruMask_MM(int x, int y, int graphic)
+void DrawGraphicThruMask_MM(int x, int y, int graphic, int frame)
 {
 #if DEBUG
-  if (!IN_SCR_FIELD(x,y))
+  if (!IN_SCR_FIELD(x, y))
   {
-    printf("DrawGraphicThruMask_MM(): x = %d,y = %d, graphic = %d\n",x,y,graphic);
-    printf("DrawGraphicThruMask_MM(): This should never happen!\n");
+    Debug("game:mm:DrawGraphicThruMask_MM", "x = %d, y = %d, graphic = %d",
+	  x, y, graphic);
+    Debug("game:mm:DrawGraphicThruMask_MM", "This should never happen!");
+
     return;
   }
 #endif
 
-  DrawGraphicThruMaskExt_MM(drawto_field, cFX + x * TILEX, cFY + y * TILEY,
-			    graphic);
+  DrawGraphicThruMaskExt_MM(drawto_mm, cFX + x * TILEX, cFY + y * TILEY,
+			    graphic, frame);
 
-  MarkTileDirty(x,y);
+  MarkTileDirty(x, y);
 }
 
 void DrawGraphicThruMaskExt_MM(DrawBuffer *d, int dest_x, int dest_y,
-			       int graphic)
+			       int graphic, int frame)
 {
   int src_x, src_y;
   Bitmap *src_bitmap;
@@ -112,26 +127,19 @@ void DrawGraphicThruMaskExt_MM(DrawBuffer *d, int dest_x, int dest_y,
   if (graphic == IMG_EMPTY)
     return;
 
-  getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
+  getGraphicSource(graphic, frame, &src_bitmap, &src_x, &src_y);
 
   BlitBitmapMasked(src_bitmap, d, src_x, src_y, TILEX, TILEY, dest_x, dest_y);
 }
 
 void DrawMiniGraphic_MM(int x, int y, int graphic)
 {
-  DrawMiniGraphicExt_MM(drawto, cSX + x * MINI_TILEX, cSY + y * MINI_TILEY,
+  DrawMiniGraphicExt_MM(drawto_mm, cSX + x * MINI_TILEX, cSY + y * MINI_TILEY,
 			graphic);
 
   MarkTileDirty(x / 2, y / 2);
 }
 
-#if 0
-static void getMicroGraphicSource(int graphic, Bitmap **bitmap, int *x, int *y)
-{
-  getSizedGraphicSource(graphic, 0, TILESIZE / 4, bitmap, x, y);
-}
-#endif
-
 void DrawMiniGraphicExt_MM(DrawBuffer *d, int x, int y, int graphic)
 {
   Bitmap *bitmap;
@@ -142,8 +150,8 @@ void DrawMiniGraphicExt_MM(DrawBuffer *d, int x, int y, int graphic)
   BlitBitmap(bitmap, d, src_x, src_y, MINI_TILEX, MINI_TILEY, x, y);
 }
 
-void DrawGraphicShifted_MM(int x,int y, int dx,int dy, int graphic,
-			int cut_mode, int mask_mode)
+void DrawGraphicShifted_MM(int x, int y, int dx, int dy, int graphic,
+			   int cut_mode, int mask_mode)
 {
   int width = TILEX, height = TILEY;
   int cx = 0, cy = 0;
@@ -234,28 +242,24 @@ void DrawGraphicShifted_MM(int x,int y, int dx,int dy, int graphic,
   dest_y = cFY + y * TILEY + dy;
 
 #if DEBUG
-  if (!IN_SCR_FIELD(x,y))
+  if (!IN_SCR_FIELD(x, y))
   {
-    printf("DrawGraphicShifted_MM(): x = %d, y = %d, graphic = %d\n",x,y,graphic);
-    printf("DrawGraphicShifted_MM(): This should never happen!\n");
+    Debug("game:mm:DrawGraphicShifted_MM", "x = %d, y = %d, graphic = %d",
+	  x, y, graphic);
+    Debug("game:mm:DrawGraphicShifted_MM", "This should never happen!");
+
     return;
   }
 #endif
 
   if (mask_mode == USE_MASKING)
-    BlitBitmapMasked(src_bitmap, drawto_field,
+    BlitBitmapMasked(src_bitmap, drawto_mm,
 		     src_x, src_y, TILEX, TILEY, dest_x, dest_y);
   else
-    BlitBitmap(src_bitmap, drawto_field,
+    BlitBitmap(src_bitmap, drawto_mm,
 	       src_x, src_y, width, height, dest_x, dest_y);
 
-  MarkTileDirty(x,y);
-}
-
-void DrawGraphicShiftedThruMask_MM(int x,int y, int dx,int dy, int graphic,
-				int cut_mode)
-{
-  DrawGraphicShifted_MM(x, y, dx, dy, graphic, cut_mode, USE_MASKING);
+  MarkTileDirty(x, y);
 }
 
 void DrawScreenElementExt_MM(int x, int y, int dx, int dy, int element,
@@ -282,7 +286,7 @@ void DrawScreenElementExt_MM(int x, int y, int dx, int dy, int element,
   if (dx || dy)
     DrawGraphicShifted_MM(x, y, dx, dy, graphic, cut_mode, mask_mode);
   else if (mask_mode == USE_MASKING)
-    DrawGraphicThruMask_MM(x, y, graphic);
+    DrawGraphicThruMask_MM(x, y, graphic, 0);
   else
     DrawGraphic_MM(x, y, graphic);
 }
@@ -301,41 +305,14 @@ void DrawScreenElementShifted_MM(int x, int y, int dx, int dy, int element,
   DrawScreenElementExt_MM(x, y, dx, dy, element, cut_mode, NO_MASKING);
 }
 
-void DrawLevelElementShifted_MM(int x, int y, int dx, int dy, int element,
-			     int cut_mode)
-{
-  DrawLevelElementExt_MM(x, y, dx, dy, element, cut_mode, NO_MASKING);
-}
-
-void DrawScreenElementThruMask_MM(int x, int y, int element)
-{
-  DrawScreenElementExt_MM(x, y, 0, 0, element, NO_CUTTING, USE_MASKING);
-}
-
-void DrawLevelElementThruMask_MM(int x, int y, int element)
-{
-  DrawLevelElementExt_MM(x, y, 0, 0, element, NO_CUTTING, USE_MASKING);
-}
-
-void DrawLevelFieldThruMask_MM(int x, int y)
-{
-  DrawLevelElementExt_MM(x, y, 0, 0, Feld[x][y], NO_CUTTING, USE_MASKING);
-}
-
 void DrawScreenElement_MM(int x, int y, int element)
 {
   DrawScreenElementExt_MM(x, y, 0, 0, element, NO_CUTTING, NO_MASKING);
 }
 
-void DrawLevelElement_MM(int x, int y, int element)
-{
-  if (IN_LEV_FIELD(x, y) && IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
-    DrawScreenElement_MM(SCREENX(x), SCREENY(y), element);
-}
-
 void DrawScreenField_MM(int x, int y)
 {
-  int element = Feld[x][y];
+  int element = Tile[x][y];
 
   if (!IN_LEV_FIELD(x, y))
     return;
@@ -366,7 +343,7 @@ void DrawScreenField_MM(int x, int y)
 
     DrawScreenElement_MM(x, y, EL_EMPTY);
 
-    element = Feld[oldx][oldy];
+    element = Tile[oldx][oldy];
 
     if (horiz_move)
       DrawScreenElementShifted_MM(sx, sy, MovPos[oldx][oldy], 0, element,
@@ -387,7 +364,24 @@ void DrawScreenField_MM(int x, int y)
 
 void DrawLevelField_MM(int x, int y)
 {
-  DrawScreenField_MM(x, y);
+  if (IN_SCR_FIELD(SCREENX(x), SCREENY(y)))
+    DrawScreenField_MM(SCREENX(x), SCREENY(y));
+  else if (IS_MOVING(x, y))
+  {
+    int newx, newy;
+
+    Moving2Blocked(x, y, &newx, &newy);
+    if (IN_SCR_FIELD(SCREENX(newx), SCREENY(newy)))
+      DrawScreenField_MM(SCREENX(newx), SCREENY(newy));
+  }
+  else if (IS_BLOCKED(x, y))
+  {
+    int oldx, oldy;
+
+    Blocked2Moving(x, y, &oldx, &oldy);
+    if (IN_SCR_FIELD(SCREENX(oldx), SCREENY(oldy)))
+      DrawScreenField_MM(SCREENX(oldx), SCREENY(oldy));
+  }
 }
 
 void DrawMiniElement_MM(int x, int y, int element)
@@ -413,19 +407,19 @@ void DrawMiniElementOrWall_MM(int sx, int sy, int scroll_x, int scroll_y)
   if (x < -1 || x > lev_fieldx || y < -1 || y > lev_fieldy)
     DrawMiniElement_MM(sx, sy, EL_EMPTY);
   else if (x > -1 && x < lev_fieldx && y > -1 && y < lev_fieldy)
-    DrawMiniElement_MM(sx, sy, Feld[x][y]);
+    DrawMiniElement_MM(sx, sy, Tile[x][y]);
 }
 
 void DrawField_MM(int x, int y)
 {
-  int element = Feld[x][y];
+  int element = Tile[x][y];
 
   DrawElement_MM(x, y, element);
 }
 
 void DrawLevel_MM(void)
 {
-  int x,y;
+  int x, y;
 
   ClearWindow();
 
@@ -464,10 +458,10 @@ void DrawWallsExt_MM(int x, int y, int element, int draw_mask)
       continue;
 
     if (element & (1 << i))
-      BlitBitmap(bitmap, drawto, gx, gy, MINI_TILEX, MINI_TILEY,
+      BlitBitmap(bitmap, drawto_mm, gx, gy, MINI_TILEX, MINI_TILEY,
 		 dest_x, dest_y);
     else
-      ClearRectangle(drawto, dest_x, dest_y, MINI_TILEX, MINI_TILEY);
+      ClearRectangle(drawto_mm, dest_x, dest_y, MINI_TILEX, MINI_TILEY);
   }
 
   MarkTileDirty(x, y);
@@ -518,7 +512,7 @@ void DrawWallsAnimation_MM(int x, int y, int element, int phase, int bit_mask)
       getSizedGraphicSource(graphic, frame, MINI_TILESIZE, &bitmap,
 			    &src_x, &src_y);
 
-      BlitBitmap(bitmap, drawto, src_x, src_y, MINI_TILEX, MINI_TILEY,
+      BlitBitmap(bitmap, drawto_mm, src_x, src_y, MINI_TILEX, MINI_TILEY,
 		 dst_x, dst_y);
     }
   }
@@ -533,9 +527,9 @@ void DrawElement_MM(int x, int y, int element)
   else if (IS_WALL(element))
     DrawWalls_MM(x, y, element);
 #if 0
-  else if (IS_WALL_CHANGING(element) && IS_WALL_CHANGING(Feld[x][y]))
+  else if (IS_WALL_CHANGING(element) && IS_WALL_CHANGING(Tile[x][y]))
   {
-    int wall_element = Feld[x][y] - EL_WALL_CHANGING + Store[x][y];
+    int wall_element = Tile[x][y] - EL_WALL_CHANGING + Store[x][y];
 
     DrawWalls_MM(x, y, wall_element);
   }
@@ -547,104 +541,594 @@ void DrawElement_MM(int x, int y, int element)
 	   laser.fuse_x == x &&
 	   laser.fuse_y == y)
     DrawGraphic_MM(x, y, IMG_MM_FUSE);
+  else if (element == EL_GRAY_BALL_ACTIVE)
+    DrawGraphic_MM(x, y, el_act2gfx(EL_GRAY_BALL, MM_ACTION_ACTIVE));
+  else if (element == EL_GRAY_BALL_OPENING)
+    DrawGraphic_MM(x, y, el_act2gfx(EL_GRAY_BALL, MM_ACTION_OPENING));
+  else if (element == EL_BOMB_ACTIVE)
+    DrawGraphic_MM(x, y, el_act2gfx(EL_BOMB, MM_ACTION_ACTIVE));
+  else if (element == EL_MINE_ACTIVE)
+    DrawGraphic_MM(x, y, el_act2gfx(EL_MINE, MM_ACTION_ACTIVE));
   else
     DrawGraphic_MM(x, y, el2gfx(element));
 }
 
-#if 0
-static void DrawMicroWalls_MM(int x, int y, int element)
+
+// ----------------------------------------------------------------------------
+// XSN
+// ----------------------------------------------------------------------------
+
+#define XSN_RND(x)		((x) != 0 ? rand() % (x) : 0)
+#define XSN_ALPHA_VALUE(x)	(SDL_ALPHA_OPAQUE * (x) / 100)
+
+#define XSN_MAX_ITEMS		100
+#define XSN_MAX_HEIGHT		40
+#define XSN_MAX_DX		2
+#define XSN_MAX_DY		10
+#define XSN_CHECK_DELAY		3
+#define XSN_START_DELAY		60
+#define XSN_UPDATE_DELAY	50
+#define XSN_GROWTH_DELAY	3
+#define XSN_GROWTH_RATE		3
+#define XSN_CHANGE_DELAY	30
+#define XSN_CHANGE_FACTOR	3
+#define XSN_ALPHA_DEFAULT	XSN_ALPHA_VALUE(95)
+#define XSN_ALPHA_VISIBLE	XSN_ALPHA_VALUE(50)
+#define XSN_DEBUG_STEPS		5
+
+static byte xsn_bits_0[] = { 0x05, 0x02, 0x05 };
+static byte xsn_bits_1[] = { 0x22, 0x6b, 0x14, 0x2a, 0x14, 0x6b, 0x22 };
+static byte xsn_bits_2[] = { 0x14, 0x08, 0x49, 0x36, 0x49, 0x08, 0x14 };
+
+char debug_xsn_mode[] = { 76,101,116,32,105,116,32,115,110,111,119,33,0 };
+
+void setHideSetupEntry(void *);
+void removeHideSetupEntry(void *);
+
+static struct
 {
+  int size;
+  byte *bits;
   Bitmap *bitmap;
-  int graphic = el2gfx(WALL_BASE(element));
-  int gx, gy;
-  int i;
+}
+xsn_data[] =
+{
+  { ARRAY_SIZE(xsn_bits_0), xsn_bits_0 },
+  { ARRAY_SIZE(xsn_bits_1), xsn_bits_1 },
+  { ARRAY_SIZE(xsn_bits_2), xsn_bits_2 },
+  { ARRAY_SIZE(xsn_bits_2), xsn_bits_2 },
+  { ARRAY_SIZE(xsn_bits_1), xsn_bits_1 },
+  { ARRAY_SIZE(xsn_bits_2), xsn_bits_2 },
+  { ARRAY_SIZE(xsn_bits_0), xsn_bits_0 },
+};
+static int num_xsn_data = ARRAY_SIZE(xsn_data);
+
+struct XsnItem
+{
+  int x;
+  int y;
+  int dx;
+  int dy;
+  int type;
+  int active;
+};
+
+struct Xsn
+{
+  int area_xsize;
+  int area_ysize;
 
-  getMicroGraphicSource(graphic, &bitmap, &gx, &gy);
+  int num_items;
+  int max_items;
+  int max_height;
+  int max_dx;
+  int max_dy;
 
-  for (i = 0; i < 4; i++)
+  int change_delay;
+  int change_type;
+  int change_dir;
+
+  int *height;
+
+  struct XsnItem items[XSN_MAX_ITEMS];
+
+  Bitmap *bitmap;
+
+  int alpha;
+};
+
+static struct Xsn xsn = { 0 };
+
+static int xsn_percent(void)
+{
+  int xsn_m0 = -3;
+  int xsn_m1 = xsn_m0 + 10;
+  int xsn_m2 = xsn_m1 + 10;
+  int xsn_m3 = xsn_m2 + 10;
+  time_t xsn_e0 = time(NULL);
+  struct tm *xsn_t0 = localtime(&xsn_e0);
+  struct tm xsn_t1 = { 0,0,0, xsn_m2 * 3, xsn_m3 / 3, xsn_t0->tm_year, 0,0,-1 };
+  time_t xsn_e1 = mktime(&xsn_t1);
+  int xsn_c0 = (25 * xsn_m3) << xsn_m1;
+  int xsn_c1 = (xsn_t1.tm_wday - xsn_m1) * !!xsn_t1.tm_wday;
+
+  for (xsn_m0 = 5; xsn_m0 > 0; xsn_m0--)
   {
-    int xpos = MICROLEV_XPOS + x * MICRO_TILEX + MICRO_WALLX * (i % 2);
-    int ypos = MICROLEV_YPOS + y * MICRO_TILEY + MICRO_WALLY * (i / 2);
+    int xsn_c2 = (xsn_m0 > 4 ? 0 : xsn_c1) - xsn_m1 * xsn_m0;
+    int xsn_off = (xsn_m0 > 4 ? xsn_c0 : 0);
+    time_t xsn_e3 = xsn_e1 - xsn_c2 * xsn_c0;
 
-    if (element & (1 << i))
-      BlitBitmap(bitmap, drawto, gx, gy, MICRO_WALLX, MICRO_WALLY, xpos, ypos);
-    else
-      ClearRectangle(drawto, xpos, ypos, MICRO_WALLX, MICRO_WALLY);
+    if (xsn_e0 > xsn_e3 - xsn_off &&
+        xsn_e0 < xsn_e3 + xsn_off + xsn_c0)
+      return xsn_m0 * (xsn_m3 - xsn_m1);
   }
+
+  return xsn_m0;
 }
 
-static void DrawMicroElement_MM(int x, int y, int element)
+static void xsn_init_item(int nr)
 {
-  Bitmap *bitmap;
-  int graphic = el2gfx(element);
-  int gx, gy;
+  struct XsnItem *item = &xsn.items[nr];
 
-  if (element == EL_EMPTY)
-    return;
+  item->type = XSN_RND(num_xsn_data);
 
-  if (IS_WALL(element))
+  if (xsn.change_type != 0)
   {
-    DrawMicroWalls_MM(x, y, element);
+    int new_x = XSN_RND(xsn.area_xsize / 3);
 
-    return;
+    item->x = (xsn.change_dir == 1 ? new_x : xsn.area_xsize - new_x);
+    item->y = XSN_RND(xsn.area_ysize);
+  }
+  else
+  {
+    item->x = XSN_RND(xsn.area_xsize - xsn_data[item->type].size);
+    item->y = XSN_RND(xsn.area_ysize / 10);
   }
 
-  getMicroGraphicSource(graphic, &bitmap, &gx, &gy);
+  item->dy = XSN_RND(xsn.max_dy + 1) + 1;
+  item->dx = XSN_RND(item->dy / 4 + 1) * (XSN_RND(1000) > 500 ? -1 : 1);
 
-  BlitBitmap(bitmap, drawto, gx, gy, MICRO_TILEX, MICRO_TILEY,
-	     MICROLEV_XPOS + x * MICRO_TILEX, MICROLEV_YPOS + y * MICRO_TILEY);
+  item->active = 1;
 }
 
-static void DrawMicroLevelExt_MM(int xpos, int ypos)
+static void xsn_update_item(int nr)
 {
-  int x, y;
+  struct XsnItem *item = &xsn.items[nr];
 
-  ClearRectangle(drawto, xpos, ypos, MICROLEV_XSIZE, MICROLEV_YSIZE);
+  if (!item->active)
+    xsn_init_item(nr);
 
-  for (x = 0; x < STD_LEV_FIELDX; x++)
-    for (y = 0; y < STD_LEV_FIELDY; y++)
-      DrawMicroElement_MM(x, y, Ur[x][y]);
+  if (xsn.change_type != 0)
+  {
+    int dx_new = ABS(item->dx) +
+      (xsn.change_type == 1 ?
+       XSN_RND(XSN_CHANGE_FACTOR + 1) - XSN_CHANGE_FACTOR / 2 :
+       XSN_RND(20));
 
-  redraw_mask |= REDRAW_FIELD;
+    item->dx = MIN(MAX(-50, dx_new * xsn.change_dir), 50);
+  }
+
+  int new_x = item->x + item->dx;
+  int new_y = item->y + item->dy;
+
+  item->active = (new_y < xsn.area_ysize);
+
+  if (xsn.change_type != 0)
+    item->active = (item->active && new_x > 0 && new_x < xsn.area_xsize);
+
+  int item_size = xsn_data[item->type].size;
+  int half_item_size = item_size / 2;
+  int mid_x = new_x + half_item_size;
+  int mid_y = new_y + half_item_size;
+  int upper_border = xsn.area_ysize - xsn.max_height;
+
+  if (item->active &&
+      new_y >= upper_border &&
+      new_x >= 0 &&
+      new_x <= xsn.area_xsize - item_size &&
+      mid_y >= xsn.height[mid_x] &&
+      mid_y < xsn.area_ysize)
+  {
+    Bitmap *item_bitmap = xsn_data[item->type].bitmap;
+    SDL_Surface *surface = xsn.bitmap->surface;
+    SDL_Surface *surface_masked = xsn.bitmap->surface_masked;
+    int item_alpha = XSN_ALPHA_VALUE(81 + XSN_RND(20));
+    int shrink = 1;
+    int i;
+
+    xsn.bitmap->surface = surface_masked;
+
+    SDLSetAlpha(item_bitmap->surface_masked, TRUE, item_alpha);
+
+    // blit to masked surface instead of opaque surface
+    BlitBitmapMasked(item_bitmap, xsn.bitmap, 0, 0, item_size, item_size,
+		     new_x, new_y - upper_border);
+
+    SDLSetAlpha(item_bitmap->surface_masked, TRUE, XSN_ALPHA_DEFAULT);
+
+    for (i = -half_item_size; i <= half_item_size; i++)
+    {
+      int xpos = mid_x + i;
+
+      if (xpos >= 0 && xpos < xsn.area_xsize)
+	xsn.height[xpos] = MIN(new_y + ABS(i), xsn.height[xpos]);
+    }
+
+    if (xsn.height[mid_x] <= upper_border + shrink)
+    {
+      int xpos1 = MAX(0, new_x - half_item_size);
+      int xpos2 = MIN(new_x + 3 * half_item_size, xsn.area_xsize);
+      int xsize = xpos2 - xpos1;
+      int ysize1 = XSN_RND(xsn.max_height - shrink);
+      int ysize2 = xsn.max_height - ysize1;
+
+      SDLSetAlpha(surface_masked, FALSE, 0);
+
+      FillRectangle(xsn.bitmap, xpos1, xsn.max_height, xsize, xsn.max_height,
+		    BLACK_PIXEL);
+      BlitBitmapMasked(xsn.bitmap, xsn.bitmap, xpos1, 0, xsize, ysize1,
+		       xpos1, xsn.max_height + shrink);
+      BlitBitmapMasked(xsn.bitmap, xsn.bitmap, xpos1, ysize1, xsize, ysize2,
+		       xpos1, xsn.max_height + ysize1);
+      FillRectangle(xsn.bitmap, xpos1, 0, xsize, xsn.max_height,
+		    BLACK_PIXEL);
+      BlitBitmapMasked(xsn.bitmap, xsn.bitmap, xpos1, xsn.max_height,
+		       xsize, xsn.max_height, xpos1, 0);
+
+      SDLSetAlpha(surface_masked, TRUE, xsn.alpha);
+
+      for (i = xpos1; i < xpos2; i++)
+	xsn.height[i] = MIN(xsn.height[i] + shrink, xsn.area_ysize - 1);
+    }
+
+    SDLFreeBitmapTextures(xsn.bitmap);
+    SDLCreateBitmapTextures(xsn.bitmap);
+
+    xsn.bitmap->surface = surface;
+
+    item->active = 0;
+  }
+
+  item->dx += XSN_RND(XSN_CHANGE_FACTOR) * (XSN_RND(1000) > 500 ? -1 : 1);
+
+  if (xsn.change_type == 0)
+    item->dx = MIN(MAX(-xsn.max_dx, item->dx), xsn.max_dx);
+
+  item->x = new_x;
+  item->y = new_y;
 }
-#endif
 
-void DrawMiniLevel_MM(int size_x, int size_y, int scroll_x, int scroll_y)
+static void xsn_update_change(void)
 {
-  int x, y;
+  if (XSN_RND(100) > 65)
+  {
+    xsn.change_dir = (XSN_RND(10) > 4 ? 1 : -1);
+    xsn.change_delay = XSN_RND(5) + 1;
+    xsn.change_type = 2;
+  }
+  else if (xsn.change_type == 2)
+  {
+    xsn.change_delay = XSN_RND(3) + 1;
+    xsn.change_type = 1;
+  }
+  else
+  {
+    xsn.change_delay = XSN_CHANGE_DELAY;
+    xsn.change_type = 0;
+  }
+}
+
+static void DrawTileCursor_Xsn(int draw_target)
+{
+  static boolean initialized = FALSE;
+  static boolean started = FALSE;
+  static boolean active = FALSE;
+  static boolean debug = FALSE;
+  static DelayCounter check_delay = { XSN_CHECK_DELAY * 1000 };
+  static DelayCounter start_delay = { 0 };
+  static DelayCounter growth_delay = { 0 };
+  static DelayCounter update_delay = { 0 };
+  static DelayCounter change_delay = { 0 };
+  static int percent = 0;
+  static int debug_value = 0;
+  boolean reinitialize = FALSE;
+  boolean active_last = active;
+  int i, x, y;
+
+  if (draw_target != DRAW_TO_SCREEN)
+    return;
 
-  for (x = 0; x < size_x; x++)
-    for (y = 0; y < size_y; y++)
-      DrawMiniElementOrWall_MM(x, y, scroll_x, scroll_y);
+  if (DelayReached(&check_delay))
+  {
+    percent = (debug ? debug_value * 100 / XSN_DEBUG_STEPS : xsn_percent());
 
-  redraw_mask |= REDRAW_FIELD;
+    if (debug)
+      setup.debug.xsn_percent = percent;
+
+    if (setup.debug.xsn_mode != AUTO)
+      percent = setup.debug.xsn_percent;
+
+    setup.debug.xsn_percent = percent;
+
+    active = (percent > 0);
+
+    if ((active && !active_last) || setup.debug.xsn_mode != AUTO)
+      removeHideSetupEntry(&setup.debug.xsn_mode);
+    else if (!active && active_last)
+      setHideSetupEntry(&setup.debug.xsn_mode);
+
+    if (setup.debug.xsn_mode == FALSE)
+      active = FALSE;
+  }
+  else if (tile_cursor.xsn_debug)
+  {
+    debug_value = (active ? 0 : MIN(debug_value + 1, XSN_DEBUG_STEPS));
+    debug = TRUE;
+    active = FALSE;
+
+    ResetDelayCounter(&check_delay);
+
+    setup.debug.xsn_mode = (debug_value > 0);
+    tile_cursor.xsn_debug = FALSE;
+  }
+
+  if (!active)
+    return;
+
+  if (!initialized)
+  {
+    xsn.area_xsize = gfx.win_xsize;
+    xsn.area_ysize = gfx.win_ysize;
+
+    for (i = 0; i < num_xsn_data; i++)
+    {
+      int size = xsn_data[i].size;
+      byte *bits = xsn_data[i].bits;
+      Bitmap *bitmap = CreateBitmap(size, size, DEFAULT_DEPTH);
+
+      FillRectangle(bitmap, 0, 0, size, size, BLACK_PIXEL);
+
+      for (y = 0; y < size; y++)
+	for (x = 0; x < size; x++)
+	  if ((bits[y] >> x) & 0x01)
+	    SDLPutPixel(bitmap, x, y, WHITE_PIXEL);
+
+      SDL_Surface *surface = bitmap->surface;
+
+      if ((bitmap->surface_masked = SDLGetNativeSurface(surface)) == NULL)
+	Fail("SDLGetNativeSurface() failed");
+
+      SDL_Surface *surface_masked = bitmap->surface_masked;
+
+      SDL_SetColorKey(surface_masked, SET_TRANSPARENT_PIXEL,
+		      SDL_MapRGB(surface_masked->format, 0x00, 0x00, 0x00));
+
+      SDLSetAlpha(surface, TRUE, XSN_ALPHA_DEFAULT);
+      SDLSetAlpha(surface_masked, TRUE, XSN_ALPHA_DEFAULT);
+
+      xsn_data[i].bitmap = bitmap;
+    }
+
+    srand((unsigned int)time(NULL));
+
+    initialized = TRUE;
+  }
+
+  if (!active_last)
+  {
+    start_delay.value = (debug || setup.debug.xsn_mode == TRUE ? 0 :
+			 (XSN_START_DELAY + XSN_RND(XSN_START_DELAY)) * 1000);
+    started = FALSE;
+
+    ResetDelayCounter(&start_delay);
+
+    reinitialize = TRUE;
+  }
+
+  if (reinitialize)
+  {
+    xsn.num_items  = 0;
+    xsn.max_items  = percent * XSN_MAX_ITEMS / 100;
+    xsn.max_height = percent * XSN_MAX_HEIGHT / 100;
+
+    xsn.max_dx = XSN_MAX_DX;
+    xsn.max_dy = XSN_MAX_DY;
+
+    xsn.change_delay = XSN_CHANGE_DELAY;
+    xsn.change_type  = 0;
+    xsn.change_dir   = 0;
+
+    xsn.alpha = XSN_ALPHA_DEFAULT;
+
+    for (i = 0; i < xsn.max_items; i++)
+      xsn_init_item(i);
+  }
+
+  if (xsn.area_xsize != gfx.win_xsize ||
+      xsn.area_ysize != gfx.win_ysize ||
+      reinitialize)
+  {
+    xsn.area_xsize = gfx.win_xsize;
+    xsn.area_ysize = gfx.win_ysize;
+
+    if (xsn.bitmap != NULL)
+      FreeBitmap(xsn.bitmap);
+
+    xsn.bitmap = CreateBitmap(xsn.area_xsize, xsn.max_height * 2,
+			      DEFAULT_DEPTH);
+
+    FillRectangle(xsn.bitmap, 0, 0, xsn.area_xsize, xsn.max_height,
+		  BLACK_PIXEL);
+
+    SDL_Surface *surface = xsn.bitmap->surface;
+
+    if ((xsn.bitmap->surface_masked = SDLGetNativeSurface(surface)) == NULL)
+      Fail("SDLGetNativeSurface() failed");
+
+    SDL_Surface *surface_masked = xsn.bitmap->surface_masked;
+
+    SDL_SetColorKey(surface_masked, SET_TRANSPARENT_PIXEL,
+		    SDL_MapRGB(surface_masked->format, 0x00, 0x00, 0x00));
+
+    SDLSetAlpha(surface, TRUE, xsn.alpha);
+    SDLSetAlpha(surface_masked, TRUE, xsn.alpha);
+
+    SDLCreateBitmapTextures(xsn.bitmap);
+
+    for (i = 0; i < num_xsn_data; i++)
+    {
+      SDLFreeBitmapTextures(xsn_data[i].bitmap);
+      SDLCreateBitmapTextures(xsn_data[i].bitmap);
+    }
+
+    if (xsn.height != NULL)
+      checked_free(xsn.height);
+
+    xsn.height = checked_calloc(xsn.area_xsize * sizeof(int));
+
+    for (i = 0; i < xsn.area_xsize; i++)
+      xsn.height[i] = xsn.area_ysize - 1;
+  }
+
+  if (!started)
+  {
+    if (!DelayReached(&start_delay))
+      return;
+
+    update_delay.value = XSN_UPDATE_DELAY;
+    growth_delay.value = XSN_GROWTH_DELAY * 1000;
+    change_delay.value = XSN_CHANGE_DELAY * 1000;
+
+    ResetDelayCounter(&growth_delay);
+    ResetDelayCounter(&update_delay);
+    ResetDelayCounter(&change_delay);
+
+    started = TRUE;
+  }
+
+  if (xsn.num_items < xsn.max_items)
+  {
+    if (DelayReached(&growth_delay))
+    {
+      xsn.num_items += XSN_RND(XSN_GROWTH_RATE * 2);
+      xsn.num_items = MIN(xsn.num_items, xsn.max_items);
+    }
+  }
+
+  if (DelayReached(&update_delay))
+  {
+    for (i = 0; i < xsn.num_items; i++)
+      xsn_update_item(i);
+  }
+
+  if (DelayReached(&change_delay))
+  {
+    xsn_update_change();
+
+    change_delay.value = xsn.change_delay * 1000;
+  }
+
+  int xsn_alpha_dx = (gfx.mouse_y > xsn.area_ysize - xsn.max_height ?
+		      (xsn.alpha > XSN_ALPHA_VISIBLE ? -1 : 0) :
+		      (xsn.alpha < XSN_ALPHA_DEFAULT ? +1 : 0));
+
+  if (xsn_alpha_dx != 0)
+  {
+    xsn.alpha += xsn_alpha_dx;
+
+    SDLSetAlpha(xsn.bitmap->surface_masked, TRUE, xsn.alpha);
+
+    SDLFreeBitmapTextures(xsn.bitmap);
+    SDLCreateBitmapTextures(xsn.bitmap);
+  }
+
+  BlitToScreenMasked(xsn.bitmap, 0, 0, xsn.area_xsize, xsn.max_height,
+		     0, xsn.area_ysize - xsn.max_height);
+
+  for (i = 0; i < xsn.num_items; i++)
+  {
+    int dst_x = xsn.items[i].x;
+    int dst_y = xsn.items[i].y;
+    int type = xsn.items[i].type;
+    int size = xsn_data[type].size;
+    Bitmap *bitmap = xsn_data[type].bitmap;
+
+    BlitToScreenMasked(bitmap, 0, 0, size, size, dst_x, dst_y);
+  }
 }
 
-#if 0
-static int REQ_in_range(int x, int y)
+void DrawTileCursor_MM(int draw_target, int drawing_stage,
+		       boolean tile_cursor_active)
 {
-  if (y > DY + 249 && y < DY + 278)
+  if (program.headless)
+    return;
+
+  Bitmap *fade_bitmap;
+  Bitmap *src_bitmap;
+  int src_x, src_y;
+  int dst_x, dst_y;
+  int graphic = IMG_GLOBAL_TILE_CURSOR;
+  int frame = 0;
+  int tilesize = TILESIZE_VAR;
+  int width = tilesize;
+  int height = tilesize;
+
+  if (!drawing_stage)
+  {
+    DrawTileCursor_Xsn(draw_target);
+
+    return;
+  }
+
+  if (!tile_cursor.enabled ||
+      !tile_cursor.active ||
+      !tile_cursor_active)
+    return;
+
+  if (tile_cursor.moving)
   {
-    if (x > DX + 1 && x < DX + 48)
-      return 1;
-    else if (x > DX + 51 && x < DX + 98)
-      return 2;
+    int step = TILESIZE_VAR / 4;
+    int dx = tile_cursor.target_x - tile_cursor.x;
+    int dy = tile_cursor.target_y - tile_cursor.y;
+
+    if (ABS(dx) < step)
+      tile_cursor.x = tile_cursor.target_x;
+    else
+      tile_cursor.x += SIGN(dx) * step;
+
+    if (ABS(dy) < step)
+      tile_cursor.y = tile_cursor.target_y;
+    else
+      tile_cursor.y += SIGN(dy) * step;
+
+    if (tile_cursor.x == tile_cursor.target_x &&
+	tile_cursor.y == tile_cursor.target_y)
+      tile_cursor.moving = FALSE;
   }
 
-  return 0;
+  dst_x = tile_cursor.x;
+  dst_y = tile_cursor.y;
+
+  frame = getGraphicAnimationFrame(graphic, -1);
+
+  getSizedGraphicSource(graphic, frame, tilesize, &src_bitmap, &src_x, &src_y);
+
+  fade_bitmap =
+    (draw_target == DRAW_TO_FADE_SOURCE ? gfx.fade_bitmap_source :
+     draw_target == DRAW_TO_FADE_TARGET ? gfx.fade_bitmap_target : NULL);
+
+  if (draw_target == DRAW_TO_SCREEN)
+    BlitToScreenMasked(src_bitmap, src_x, src_y, width, height, dst_x, dst_y);
+  else
+    BlitBitmapMasked(src_bitmap, fade_bitmap, src_x, src_y, width, height,
+		     dst_x, dst_y);
 }
-#endif
 
 Pixel ReadPixel(DrawBuffer *bitmap, int x, int y)
 {
   return GetPixel(bitmap, x, y);
 }
 
-void SetRGB(unsigned int pixel,
-	    unsigned short red, unsigned short green, unsigned short blue)
-{
-}
-
 int get_base_element(int element)
 {
   if (IS_MIRROR(element))
@@ -669,6 +1153,10 @@ int get_base_element(int element)
     return EL_DF_MIRROR_START;
   else if (IS_DF_MIRROR_AUTO(element))
     return EL_DF_MIRROR_AUTO_START;
+  else if (IS_DF_MIRROR_FIXED(element))
+    return EL_DF_MIRROR_FIXED_START;
+  else if (IS_DF_SLOPE(element))
+    return EL_DF_SLOPE_START;
   else if (IS_PACMAN(element))
     return EL_PACMAN_START;
   else if (IS_GRID_STEEL(element))
@@ -712,7 +1200,8 @@ int get_num_elements(int element)
       IS_POLAR(element) ||
       IS_BEAMER(element) ||
       IS_DF_MIRROR(element) ||
-      IS_DF_MIRROR_AUTO(element))
+      IS_DF_MIRROR_AUTO(element) ||
+      IS_DF_MIRROR_FIXED(element))
     return 16;
   else if (IS_GRID_STEEL_FIXED(element) ||
 	   IS_GRID_WOOD_FIXED(element) ||
@@ -726,7 +1215,8 @@ int get_num_elements(int element)
 	   IS_RECEIVER(element) ||
 	   IS_PACMAN(element) ||
 	   IS_GRID_STEEL(element) ||
-	   IS_GRID_WOOD(element))
+	   IS_GRID_WOOD(element) ||
+	   IS_DF_SLOPE(element))
     return 4;
   else
     return 1;
@@ -741,35 +1231,150 @@ int get_rotated_element(int element, int step)
   return base_element + (element_phase + step + num_elements) % num_elements;
 }
 
-static int map_element(int element)
+static boolean has_full_rotation(int element)
+{
+  return (IS_BEAMER(element) ||
+	  IS_MCDUFFIN(element) ||
+	  IS_LASER(element) ||
+	  IS_RECEIVER(element) ||
+	  IS_PACMAN(element));
+}
+
+#define MM_FLIP_X			0
+#define MM_FLIP_Y			1
+#define MM_FLIP_XY			2
+
+static int getFlippedTileExt_MM(int element, int mode)
+{
+  if (IS_WALL(element))
+  {
+    int base = WALL_BASE(element);
+    int bits = WALL_BITS(element);
+
+    if (mode == MM_FLIP_X)
+    {
+      bits = ((bits & 1) << 1 |
+	      (bits & 2) >> 1 |
+	      (bits & 4) << 1 |
+	      (bits & 8) >> 1);
+    }
+    else if (mode == MM_FLIP_Y)
+    {
+      bits = ((bits & 1) << 2 |
+	      (bits & 2) << 2 |
+	      (bits & 4) >> 2 |
+	      (bits & 8) >> 2);
+    }
+    else if (mode == MM_FLIP_XY)
+    {
+      bits = ((bits & 1) << 0 |
+	      (bits & 2) << 1 |
+	      (bits & 4) >> 1 |
+	      (bits & 8) >> 0);
+    }
+
+    element = base | bits;
+  }
+  else
+  {
+    int base_element = get_base_element(element);
+    int num_elements = get_num_elements(element);
+    int element_phase = element - base_element;
+
+    if (IS_GRID_STEEL(element) || IS_GRID_WOOD(element))
+    {
+      if ((mode == MM_FLIP_XY && element_phase < 2) ||
+	  (mode != MM_FLIP_XY && element_phase > 1))
+	element_phase ^= 1;
+    }
+    else if (IS_DF_SLOPE(element))
+    {
+      element_phase = (mode == MM_FLIP_X  ? 5 - element_phase :
+		       mode == MM_FLIP_Y  ? 3 - element_phase :
+		       mode == MM_FLIP_XY ? 4 - element_phase :
+		       element_phase);
+    }
+    else
+    {
+      int num_elements_flip = num_elements;
+
+      if (has_full_rotation(element))
+      {
+	if (mode == MM_FLIP_X)
+	  num_elements_flip = num_elements / 2;
+	else if (mode == MM_FLIP_XY)
+	  num_elements_flip = num_elements * 3 / 4;
+      }
+      else
+      {
+	if (mode == MM_FLIP_XY)
+	  num_elements_flip = num_elements / 2;
+      }
+
+      element_phase = num_elements_flip - element_phase;
+    }
+
+    element = base_element + (element_phase + num_elements) % num_elements;
+  }
+
+  return element;
+}
+
+int getFlippedTileX_MM(int element)
+{
+  return getFlippedTileExt_MM(element, MM_FLIP_X);
+}
+
+int getFlippedTileY_MM(int element)
+{
+  return getFlippedTileExt_MM(element, MM_FLIP_Y);
+}
+
+int getFlippedTileXY_MM(int element)
+{
+  return getFlippedTileExt_MM(element, MM_FLIP_XY);
+}
+
+int map_wall_from_base_element(int element)
 {
   switch (element)
   {
-    case EL_WALL_STEEL:		return EL_STEEL_WALL;
-    case EL_WALL_WOOD:		return EL_WOODEN_WALL;
-    case EL_WALL_ICE:		return EL_ICE_WALL;
-    case EL_WALL_AMOEBA:	return EL_AMOEBA_WALL;
-    case EL_DF_WALL_STEEL:	return EL_DF_STEEL_WALL;
-    case EL_DF_WALL_WOOD:	return EL_DF_WOODEN_WALL;
+    case EL_WALL_STEEL_BASE:	return EL_WALL_STEEL;
+    case EL_WALL_WOOD_BASE:	return EL_WALL_WOOD;
+    case EL_WALL_ICE_BASE:	return EL_WALL_ICE;
+    case EL_WALL_AMOEBA_BASE:	return EL_WALL_AMOEBA;
+    case EL_DF_WALL_STEEL_BASE:	return EL_DF_WALL_STEEL;
+    case EL_DF_WALL_WOOD_BASE:	return EL_DF_WALL_WOOD;
 
     default:			return element;
   }
 }
 
-int el2gfx(int element)
+int map_wall_to_base_element(int element)
 {
-  element = map_element(element);
-
   switch (element)
   {
-    case EL_LIGHTBALL:
-      return IMG_MM_LIGHTBALL_RED + RND(3);
+    case EL_WALL_STEEL:		return EL_WALL_STEEL_BASE;
+    case EL_WALL_WOOD:		return EL_WALL_WOOD_BASE;
+    case EL_WALL_ICE:		return EL_WALL_ICE_BASE;
+    case EL_WALL_AMOEBA:	return EL_WALL_AMOEBA_BASE;
+    case EL_DF_WALL_STEEL:	return EL_DF_WALL_STEEL_BASE;
+    case EL_DF_WALL_WOOD:	return EL_DF_WALL_WOOD_BASE;
 
-    default:
-      return el2img_mm(element);
+    default:			return element;
   }
 }
 
+int el2gfx(int element)
+{
+  return el2img_mm(map_wall_from_base_element(element));
+}
+
+int el_act2gfx(int element, int action)
+{
+  return el_act2img_mm(map_wall_from_base_element(element), action);
+}
+
 void RedrawPlayfield_MM(void)
 {
   DrawLevel_MM();
@@ -778,6 +1383,6 @@ void RedrawPlayfield_MM(void)
 
 void BlitScreenToBitmap_MM(Bitmap *target_bitmap)
 {
-  BlitBitmap(drawto_field, target_bitmap,
+  BlitBitmap(drawto_mm, target_bitmap,
 	     REAL_SX, REAL_SY, FULL_SXSIZE, FULL_SYSIZE, REAL_SX, REAL_SY);
 }