E_P_PUSHABLE, // can be pushed
E_P_CAN_MOVE, // can move
E_P_CAN_FALL, // can fall
+ E_P_FALLING, // falling
};
// properties
#define P_PUSHABLE (1 << E_P_PUSHABLE)
#define P_CAN_MOVE (1 << E_P_CAN_MOVE)
#define P_CAN_FALL (1 << E_P_CAN_FALL)
+#define P_FALLING (1 << E_P_FALLING)
// These are states of the magic wall.
typedef enum _magic_wall_state