X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Flibgame%2Fsdl.c;h=51c2baf83e8ef9e4f5f5508c3ac9b34a158f8e36;hb=de8b3ae622eae10f1caf96872fb1790f7bd9644b;hp=635816c7a0796be538506859fb57c5a4e0806804;hpb=e4bf86b0ac3fd50612eee1439beba2fbaaa7cd09;p=rocksndiamonds.git

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 635816c7..51c2baf8 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -172,6 +172,34 @@ inline boolean SDLSetVideoMode(DrawBuffer **backbuffer, boolean fullscreen)
   return success;
 }
 
+inline void SDLCreateBitmapContent(Bitmap *new_bitmap,
+				   int width, int height, int depth)
+{
+  SDL_Surface *surface_tmp, *surface_native;
+
+  if ((surface_tmp = SDL_CreateRGBSurface(SURFACE_FLAGS, width, height, depth,
+					  0, 0, 0, 0))
+      == NULL)
+    Error(ERR_EXIT, "SDL_CreateRGBSurface() failed: %s", SDL_GetError());
+
+  if ((surface_native = SDL_DisplayFormat(surface_tmp)) == NULL)
+    Error(ERR_EXIT, "SDL_DisplayFormat() failed: %s", SDL_GetError());
+
+  SDL_FreeSurface(surface_tmp);
+
+  new_bitmap->surface = surface_native;
+}
+
+inline void SDLFreeBitmapPointers(Bitmap *bitmap)
+{
+  if (bitmap->surface)
+    SDL_FreeSurface(bitmap->surface);
+  if (bitmap->surface_masked)
+    SDL_FreeSurface(bitmap->surface_masked);
+  bitmap->surface = NULL;
+  bitmap->surface_masked = NULL;
+}
+
 inline void SDLCopyArea(Bitmap *src_bitmap, Bitmap *dst_bitmap,
 			int src_x, int src_y,
 			int width, int height,
@@ -520,9 +548,9 @@ void sge_PutPixel(SDL_Surface *surface, Sint16 x, Sint16 y, Uint32 color)
 }
 
 void sge_PutPixelRGB(SDL_Surface *surface, Sint16 x, Sint16 y,
-		  Uint8 R, Uint8 G, Uint8 B)
+		  Uint8 r, Uint8 g, Uint8 b)
 {
-  sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, R, G, B));
+  sge_PutPixel(surface, x, y, SDL_MapRGB(surface->format, r, g, b));
 }
 
 Sint32 sge_CalcYPitch(SDL_Surface *dest, Sint16 y)
@@ -837,6 +865,30 @@ void sge_LineRGB(SDL_Surface *Surface, Sint16 x1, Sint16 y1, Sint16 x2,
 }
 
 
+/*
+  -----------------------------------------------------------------------------
+  quick (no, it's slow) and dirty hack to "invert" rectangle inside SDL surface
+  -----------------------------------------------------------------------------
+*/
+
+inline void SDLInvertArea(Bitmap *bitmap, int src_x, int src_y,
+			  int width, int height, Uint32 color)
+{
+  SDL_Surface *surface = bitmap->surface;
+  int x, y;
+
+  for (y=src_y; y < src_y + height; y++)
+  {
+    for (x=src_x; x < src_x + width; x++)
+    {
+      Uint32 pixel = SDLGetPixel(bitmap, x, y);
+
+      sge_PutPixel(surface, x, y, pixel == BLACK_PIXEL ? color : BLACK_PIXEL);
+    }
+  }
+}
+
+
 /* ========================================================================= */
 /* The following functions were taken from the SDL_gfx library version 2.0.3 */
 /* (Rotozoomer) by Andreas Schiffler                                         */
@@ -1181,6 +1233,72 @@ Bitmap *SDLLoadImage(char *filename)
 }
 
 
+/* ------------------------------------------------------------------------- */
+/* custom cursor fuctions                                                    */
+/* ------------------------------------------------------------------------- */
+
+static SDL_Cursor *create_cursor(const char **image)
+{
+  int i, row, col;
+  Uint8 data[4*32];
+  Uint8 mask[4*32];
+  int hot_x, hot_y;
+
+  i = -1;
+  for (row=0; row<32; ++row)
+  {
+    for (col=0; col<32; ++col)
+    {
+      if (col % 8)
+      {
+        data[i] <<= 1;
+        mask[i] <<= 1;
+      }
+      else
+      {
+        i++;
+        data[i] = mask[i] = 0;
+      }
+
+      switch (image[4+row][col])
+      {
+        case 'X':
+	  data[i] |= 0x01;
+	  mask[i] |= 0x01;
+	  break;
+        case '.':
+	  mask[i] |= 0x01;
+	  break;
+        case ' ':
+	  break;
+      }
+    }
+  }
+
+  sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
+
+  return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
+}
+
+void SDLSetMouseCursor(const char **cursor_image)
+{
+  static const char **last_cursor_image = NULL;
+  static SDL_Cursor *cursor_default = NULL;
+  static SDL_Cursor *cursor_current = NULL;
+
+  if (cursor_default == NULL)
+    cursor_default = SDL_GetCursor();
+
+  if (cursor_image != NULL && cursor_image != last_cursor_image)
+  {
+    cursor_current = create_cursor(cursor_image);
+    last_cursor_image = cursor_image;
+  }
+
+  SDL_SetCursor(cursor_image ? cursor_current : cursor_default);
+}
+
+
 /* ========================================================================= */
 /* audio functions                                                           */
 /* ========================================================================= */