extern int SCR_FIELDX, SCR_FIELDY;
-#define MAX_BUF_XSIZE (SCR_FIELDX + 2)
-#define MAX_BUF_YSIZE (SCR_FIELDY + 2)
+#define MAX_BUF_XSIZE (SCR_FIELDX + 2 * CAVE_BUFFER_XOFFSET)
+#define MAX_BUF_YSIZE (SCR_FIELDY + 2 * CAVE_BUFFER_YOFFSET)
/* often used screen positions */
#define DISPLAY_TIME(x) ROUNDED_DIVIDE(x, FRAMES_PER_SECOND)
+#define CAVE_POS_X(x) ((x) - lev.left)
+#define CAVE_POS_Y(x) ((x) - lev.top)
+
// ----------------------------------------------------------------------------
// data structure definitions
extern struct PLAYER ply[MAX_PLAYERS];
extern struct LevelInfo_EM native_em_level;
-extern struct GraphicInfo_EM graphic_info_em_object[TILE_MAX][8];
+extern struct GraphicInfo_EM graphic_info_em_object[GAME_TILE_MAX][8];
extern struct GraphicInfo_EM graphic_info_em_player[MAX_PLAYERS][PLY_MAX][8];
extern struct GameInfo_EM game_em;