-static void draw_tunnel_range16(void *pixels, int starty, int num_lines, long tm);
-static void draw_tunnel_range32(void *pixels, int starty, int num_lines, long tm);
+static void draw_tunnel_range16(void *pixels, int xoffs, int yoffs, int starty, int num_lines, long tm);
+static void draw_tunnel_range32(void *pixels, int xoffs, int yoffs, int starty, int num_lines, long tm);