X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fsdl.c;h=e573d3637458592d200bcb56afcf9e1064ce5321;hb=adebc3d223c1611d7c947adba6a8b34885033aec;hp=d8100125d9f0e5ad92e85d773f936d9bfa8ec24a;hpb=8d46c5298f0fcce7bdb52f3835b2fbbdc403dfe0;p=rocksndiamonds.git

diff --git a/src/sdl.c b/src/sdl.c
index d8100125..e573d363 100644
--- a/src/sdl.c
+++ b/src/sdl.c
@@ -15,6 +15,7 @@
 #ifdef USE_SDL_LIBRARY
 
 #include "main.h"
+#include "misc.h"
 
 inline void SDLCopyArea(SDL_Surface *src_surface, SDL_Surface *dst_surface,
 			int src_x, int src_y,
@@ -34,7 +35,9 @@ inline void SDLCopyArea(SDL_Surface *src_surface, SDL_Surface *dst_surface,
   dst_rect.h = height;
 
   SDL_BlitSurface(src_surface, &src_rect, dst_surface, &dst_rect);
-  SDL_UpdateRect(dst_surface, dst_x, dst_y, width, height);
+
+  if (dst_surface == window)
+    SDL_UpdateRect(dst_surface, dst_x, dst_y, width, height);
 }
 
 inline void SDLFillRectangle(SDL_Surface *surface, int x, int y,
@@ -50,6 +53,30 @@ inline void SDLFillRectangle(SDL_Surface *surface, int x, int y,
   rect.w = width;
   rect.h = height;
 
+  SDL_FillRect(surface, &rect,
+               SDL_MapRGB(surface->format, color_r, color_g, color_b));
+  SDL_UpdateRect(surface, x, y, width, height);
+}
+
+inline void SDLDrawSimpleLine(SDL_Surface *surface, int from_x, int from_y,
+			      int to_x, int to_y, unsigned int color)
+{
+  SDL_Rect rect;
+  unsigned int color_r = (color >> 2) & 0xff;
+  unsigned int color_g = (color >> 1) & 0xff;
+  unsigned int color_b = (color >> 0) & 0xff;
+
+  if (from_x > to_x)
+    swap_numbers(&from_x, &to_x);
+
+  if (from_y > to_y)
+    swap_numbers(&from_y, &to_y);
+
+  rect.x = from_x;
+  rect.y = from_y;
+  rect.w = (to_x - from_x + 1);
+  rect.h = (to_y - from_y + 1);
+
   SDL_FillRect(surface, &rect,
                SDL_MapRGB(surface->format, color_r, color_g, color_b));
 }