From: Holger Schemel <info@artsoft.org>
Date: Sat, 17 Feb 2024 13:09:39 +0000 (+0100)
Subject: fixed element animation when collecting for BD engine
X-Git-Tag: 4.4.0.0-test-1~349
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=5f180fceb4ba6ef23e944d5cd110e4da7dbb585a;p=rocksndiamonds.git

fixed element animation when collecting for BD engine
---

diff --git a/src/game_bd/bd_graphics.c b/src/game_bd/bd_graphics.c
index 7472782e..89ada120 100644
--- a/src/game_bd/bd_graphics.c
+++ b/src/game_bd/bd_graphics.c
@@ -292,6 +292,12 @@ static boolean use_native_bd_graphics_engine(void)
 }
 #endif
 
+/* returns true if the element is collectible */
+static inline boolean is_collectible(const int element)
+{
+  return (gd_elements[element & O_MASK].properties & P_COLLECTIBLE) != 0;
+}
+
 int gd_drawcave(Bitmap *dest, GdGame *game, boolean force_redraw)
 {
   GdCave *cave = game->cave;
@@ -358,6 +364,11 @@ int gd_drawcave(Bitmap *dest, GdGame *game, boolean force_redraw)
 	  {
 	    /* redraw previous game element on the cave field the new element is moving to */
 	    int tile_old = game->last_element_buffer[y][x];
+
+	    /* only redraw previous game element if it is not collectible (like dirt etc.) */
+	    if (is_collectible(tile_old))
+	      tile_old = O_SPACE;
+
 	    struct GraphicInfo_BD *g_old = &graphic_info_bd_object[tile_old][frame];
 
 	    blit_bitmap(g_old->bitmap, dest, g_old->src_x, g_old->src_y, cell_size, cell_size,