#define IS_DROPPABLE(e) HAS_PROPERTY(e, EP_DROPPABLE)
#define CAN_EXPLODE_1X1(e) HAS_PROPERTY(e, EP_CAN_EXPLODE_1X1)
#define IS_PUSHABLE(e) HAS_PROPERTY(e, EP_PUSHABLE)
#define IS_DROPPABLE(e) HAS_PROPERTY(e, EP_DROPPABLE)
#define CAN_EXPLODE_1X1(e) HAS_PROPERTY(e, EP_CAN_EXPLODE_1X1)
#define IS_PUSHABLE(e) HAS_PROPERTY(e, EP_PUSHABLE)
#define IS_PROTECTED(e) HAS_PROPERTY(e, EP_PROTECTED)
#define CAN_MOVE_INTO_ACID(e) HAS_PROPERTY(e, EP_CAN_MOVE_INTO_ACID)
#define IS_PROTECTED(e) HAS_PROPERTY(e, EP_PROTECTED)
#define CAN_MOVE_INTO_ACID(e) HAS_PROPERTY(e, EP_CAN_MOVE_INTO_ACID)
/* functions that are called before, while and after the change of an
element -- currently only used for non-custom elements */
void (*pre_change_function)(int x, int y);
void (*change_function)(int x, int y);
void (*post_change_function)(int x, int y);
/* functions that are called before, while and after the change of an
element -- currently only used for non-custom elements */
void (*pre_change_function)(int x, int y);
void (*change_function)(int x, int y);
void (*post_change_function)(int x, int y);
short actual_trigger_element; /* element that actually triggered change */
int actual_trigger_player; /* player which actually triggered change */
short actual_trigger_element; /* element that actually triggered change */
int actual_trigger_player; /* player which actually triggered change */