Question

我有什么：

您点击并将球移动到该位置。
屏幕在上部和下部之间水平分割。降低。
假设球在下方，你不能点击下方让它移动。您必须单击屏幕的顶部。关于上层或下层，这翻转。

我想要的是什么：

x coord完全没有变化。
当球击中顶部时，它会改变方向并且只需点击一下就可以返回
删除UITouch位置变量

上下系统停留

非常感谢你们。

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    /* Called when a touch begins */
    //SKAction *action = [SKAction rotateByAngle:M_PI duration:1];
    //[sprite runAction:[SKAction repeatActionForever:action]];

    for (UITouch *touch in touches) {
        location = [touch locationInNode:self];
    }

    float ballVelocity = self.frame.size.height/3.0;
    CGPoint moveDifference = CGPointMake(location.x - ball.position.x,location.y - ball.position.y);
    float distanceToMove = sqrtf(moveDifference.x * moveDifference.x +moveDifference.y * moveDifference.y);
    float moveDuration = distanceToMove / ballVelocity;


    Act_Move = [SKAction moveTo:location duration:moveDuration];
    Act_MoveDone = [SKAction runBlock:^(){
    NSLog(@"stoped");}];
    ActballMoveSeq = [SKAction sequence:@[Act_Move,Act_MoveDone]];


    if(((location.y>screenSize.height/2)&&(ball.position.y<screenSize.height/2))||((location.y<screenSize.height/2)&&(ball.position.y>screenSize.height/2))){

        if(canTap == true){
            [ball runAction:ActballMoveSeq withKey:@"moveBall_seq"];
        }
    }
}

Answer 1

要让球向上移动一定距离并自行回归，请在节点上使用applyImpulse。

// modify the dy value (100) to whatever value suits your needs
[myNode.physicsBody applyImpulse:CGVectorMake(0, 100)];

只要您的节点受到重力的影响，它最终会重新降低。

使用块的Sprite-kit动作

1 个答案: