Question

如何不断获取用户触摸的位置？我正在为游戏制作控制器，而且我必须抬起并单独将手指放在新控件上才能使其正常工作。似乎touchLocation变量仅在每次点击时更新，我希望它不断更新，这样即使我用手指滑动它也会知道位置并相应地更新它。这是相关的代码。谢谢！

-(void)update:(CCTime)delta{

    if([playerDirection isEqual:@"left"]){

        _player.position = ccp(_player.position.x - 2, _player.position.y);


    }

    if([playerDirection isEqual:@"right"]){

    _player.position = ccp(_player.position.x + 2, _player.position.y);

    }


    if([direction isEqual:@"up"]){


        _enemy.position = ccp(_enemy.position.x, _enemy.position.y + 2);


    }


    if([direction isEqual:@"down"]){

    _enemy.position = ccp(_enemy.position.x, _enemy.position.y - 2);


    }



    if(_enemy.position.y >= self.contentSize.height){

    direction = @"down";

    }


    if(_enemy.position.y <= 2){

    direction = @"up";

    }

    if(isTouching){

        _player.position = ccp(_player.position.x + 2, _player.position.y);

    }






}

// -----------------------------------------------------------------------
#pragma mark - Touch Handler
// -----------------------------------------------------------------------




-(void) touchBegan:(UITouch *)touch withEvent:(UIEvent *)event {

    CGPoint touchLocation = [touch locationInView:[touch view]];
    touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];

    if(touchLocation.x > 400){

        playerDirection = @"right";

    }

    if(touchLocation.x < 200){

    playerDirection = @"left";

    }







    CGPoint touchLoc = [touch locationInNode:self];

    //isTouching = true;



    // Log touch location
    CCLOG(@"Move sprite to @ %@",NSStringFromCGPoint(touchLoc));

    // Move our sprite to touch location
    //CCActionMoveTo *actionMove = [CCActionMoveTo actionWithDuration:1.0f position:touchLoc];
 //[_sprite runAction:actionMove];


}

- (void)touchEnded:(UITouch *)touch withEvent:(UIEvent *)event
{
    playerDirection = @"none";
}

Answer 1

我看到你有一个触摸开始和触摸过去...但是你错过了touchesMoved。

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
  for(UITouch *touch in touches) {
    //do whatever you want
  }
}

希望有所帮助，祝你好运！

Answer 2

要获得触摸，您必须在-(id) init()方法中启用触控功能。您可以通过

启用触控功能

self.IsTouchEnable = YES

之后，您可以了解以下触控处理方法

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event; 
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;

希望这会对你有所帮助

Cocos2d（IOS） - 如何不断获取用户触摸的位置？

2 个答案: