class XORFaller : Movable {

    @CostumeAttribute
    var dir = 0

    var opposite = 0

    override fun begin() {
        super.begin()
        opposite = (dir + 2) % 4
        speed = 8
    }

    override fun myTurn() {
        val next = look(dir)
        if (next.squashable( dir)) {
            move(dir)
        }
    }

    override fun canPush( direction : int, speed : int, strength : int ) : boolean {
        if (direction == dir || direction == opposite) {
            return false
        }
        val next = look( direction )
        if (next.squashable( direction ) ) {
            return true
        }
        return false
    }

    override fun push( direction : int, speed : int ) {
        move( direction )
    }


    override fun moved( movement : Movement ) {
        super.moved( movement )

        if (movement.direction == dir) {
            val next = look(dir).item()
            if (next.isPlayer()) {
                next.kill()
            }
        }
        // Don't stop moving if we can move again
        // Without this, a detonator could explode a bomb in mid-air (because
        // the bomb would pause between moves).
        if ( ! isMoving() ) {
            myTurn()
        }
        
    }
}