fixed graphical bugs with off-screen playfield movement in MM engine

[rocksndiamonds.git] / src / game_mm / mm_tools.c

diff --git a/src/game_mm/mm_tools.c b/src/game_mm/mm_tools.c
index 95e8e21af83fe406692332ff109d72be60d97916..8d77a8c01908e112897b24ca36803572bbe5992e 100644 (file)
--- a/src/game_mm/mm_tools.c
+++ b/src/game_mm/mm_tools.c
@@ -41,9 +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);
@@ -58,7 +65,7 @@ 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);
 }
 
@@ -105,7 +112,7 @@ void DrawGraphicThruMask_MM(int x, int y, int graphic, int frame)
   }
 #endif
 
-  DrawGraphicThruMaskExt_MM(drawto_field, cFX + x * TILEX, cFY + y * TILEY,
+  DrawGraphicThruMaskExt_MM(drawto_mm, cFX + x * TILEX, cFY + y * TILEY,
                            graphic, frame);
 
   MarkTileDirty(x,y);
@@ -127,7 +134,7 @@ void DrawGraphicThruMaskExt_MM(DrawBuffer *d, int dest_x, int 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);
@@ -246,10 +253,10 @@ void DrawGraphicShifted_MM(int x,int y, int dx,int dy, int graphic,
 #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);
@@ -357,7 +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)
@@ -434,10 +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);
@@ -488,7 +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);
     }
   }
@@ -1195,7 +1219,7 @@ int get_rotated_element(int element, int step)
   return base_element + (element_phase + step + num_elements) % num_elements;
 }
 
-static int map_element(int element)
+int map_wall_from_base_element(int element)
 {
   switch (element)
   {
@@ -1210,7 +1234,7 @@ static int map_element(int element)
   }
 }
 
-int unmap_element(int element)
+int map_wall_to_base_element(int element)
 {
   switch (element)
   {
@@ -1227,12 +1251,12 @@ int unmap_element(int element)
 
 int el2gfx(int element)
 {
-  return el2img_mm(map_element(element));
+  return el2img_mm(map_wall_from_base_element(element));
 }
 
 int el_act2gfx(int element, int action)
 {
-  return el_act2img_mm(map_element(element), action);
+  return el_act2img_mm(map_wall_from_base_element(element), action);
 }
 
 void RedrawPlayfield_MM(void)
@@ -1243,6 +1267,6 @@ 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);
 }