added functions to get level position (tile) from screen position (pixel)

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

diff --git a/src/game_em/graphics.c b/src/game_em/graphics.c
index 54711e9536026e5bff44b1e90372c6452a212506..3c68eb033c78c1e88e8179ce754fece1ee806722 100644 (file)
--- a/src/game_em/graphics.c
+++ b/src/game_em/graphics.c
@@ -37,6 +37,16 @@ int screen_x, screen_y;                      /* current scroll position */
 static int screentiles[MAX_PLAYFIELD_HEIGHT + 2][MAX_PLAYFIELD_WIDTH + 2];
 static int crumbled_state[MAX_PLAYFIELD_HEIGHT + 2][MAX_PLAYFIELD_WIDTH + 2];
 
+int getFieldbufferOffsetX_EM()
+{
+  return screen_x % TILEX;
+}
+
+int getFieldbufferOffsetY_EM()
+{
+  return screen_y % TILEY;
+}
+
 void BlitScreenToBitmap_EM(Bitmap *target_bitmap)
 {
   /* blit all (up to four) parts of the scroll buffer to the target bitmap */