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问操纵滑块运动cocos2d
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Stack Overflow用户

提问于 2014-05-12 03:02:35

回答 1查看 233关注 0票数 0

我在cocos2d的游戏是以一种只获取touches，而不是slide/drag移动的方式处理用户的触摸。我怎样才能在slide/drag中实现cocos2d/objective-c的运动？

例如，如果用户将手指滑动到屏幕上雪碧_player上方的任何一点上，我希望将雪碧_player向上移动。

这是我现在处理触摸的功能：

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

    CGPoint touchLocation = [touch locationInNode:self];

    positionY1 = self.contentSize.height*.2;
    positionY2 = self.contentSize.height*.40;
    positionY3 =  self.contentSize.height*.60;


    float distY1Y2 = (positionY1 + positionY2)/2;
    float distY2Y3 = (positionY2 + positionY3)/2;
    float playerMove;


    if (touchLocation.y  <= distY1Y2) {

        if(_player.position.y <= distY1Y2) {
            playerMove = positionY1;
        } else if(_player.position.y > distY1Y2 && _player.position.y < distY2Y3) {
            playerMove = positionY1;
        } else if (_player.position.y >= distY2Y3) {
            playerMove = positionY2;
        }

    } else  if (touchLocation.y  > distY1Y2 && touchLocation.y < distY2Y3) {

        if(_player.position.y <= distY1Y2) {
            playerMove = positionY2;
        } else if(_player.position.y > distY1Y2 && _player.position.y < distY2Y3) {
            playerMove = positionY2;
        } else if (_player.position.y >= distY2Y3) {
            playerMove = positionY2;
        }


    } else if (touchLocation.y  >= distY2Y3) {
        if(_player.position.y <= distY1Y2) {
            playerMove = positionY2;
        } else if(_player.position.y > distY1Y2 && _player.position.y < distY2Y3) {
            playerMove = positionY3;
        } else if (_player.position.y >= distY2Y3) {
            playerMove = positionY3;
        }
    }




    //play audio
    [[OALSimpleAudio sharedInstance] playEffect:@"pew-pew-lei.caf"];

    //Disable another touch movement
    //[[UIApplication sharedApplication] beginIgnoringInteractionEvents];

    // Move our sprite to touch location
    CCActionMoveTo *actionMove = [CCActionMoveTo actionWithDuration:.2f position:CGPointMake(_player.position.x, playerMove)];
    [_player runAction:actionMove];

    //Enable another touch movement

    //[[UIApplication sharedApplication] endIgnoringInteractionEvents];

    /*
    NSMethodSignature *sgn = [self methodSignatureForSelector:@selector(enableTouch:)];
    NSInvocation *inv = [NSInvocation invocationWithMethodSignature: sgn];
    [inv setTarget: self];
    [inv setSelector:@selector(enableTouch:)];
    [NSTimer scheduledTimerWithTimeInterval:.7f
                                 invocation:inv
                                    repeats:NO];

     */



}

ios

objective-c

cocos2d-iphone

回答 1

Stack Overflow用户

回答已采纳

发布于 2014-05-12 05:29:29

我会分享一些代码。请仔细看这段代码。

您的问题：如果用户将手指滑动到屏幕上雪碧_player上方的任何一点上，我想将雪碧_player向上移动.。

Ans：

--这是为了，如果你触摸到特定的精灵并移动那个精灵.

-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *myTouch=[touches anyObject];
    CGPoint point=[myTouch locationInView:[myTouch view]];
    point=[[CCDirector sharedDirector] convertToGL:point];
    NSLog(@"point is %@",NSStringFromCGPoint(point));
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *myTouch=[touches anyObject];
    CGPoint point=[myTouch locationInView:[myTouch view]];
    point=[[CCDirector sharedDirector] convertToGL:point];
    CCNode *Sprite=[self getChildByTag:spriteTag]; // This is your sprite, which one you want to move.
    [Sprite setPosition:point];

   // This is the boundary for sprite, for what sprite is nor cross the screen.
    if(Sprite.position.y>245)
        [Sprite setPosition:ccp(Sprite.position.x,245)];
    if(Sprite.position.y<25)
        [Sprite setPosition:ccp(Sprite.position.x,25)];
    if(Sprite.position.x<15)
        [Sprite setPosition:ccp(15,Sprite.position.y)];
    if(Sprite.position.x>465)
        [Sprite setPosition:ccp(465,Sprite.position.y)];   
}

这是为了，如果你触摸屏幕上的任何地方并移动那个精灵.

// CGPoint initialPos; // in .h file

-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint touchPt = [touch locationInView:touch.view];
    initialPos = [[CCDirector sharedDirector] convertToGL:touchPt];
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *myTouch=[touches anyObject];
    CGPoint currentPos=[myTouch locationInView:[myTouch view]];
    currentPos=[[CCDirector sharedDirector] convertToGL:currentPos];

    float diffX = currentPos.x - initialPos.x;
    float diffY = currentPos.y - initialPos.y;

    CGPoint velocity = ccp(diffX, diffY);
    initialPos = currentPos;
    [Sprite setPosition:ccpAdd([SmileBall position], velocity)];
}

- (void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *myTouch=[touches anyObject];
    CGPoint currentPos=[myTouch locationInView:[myTouch view]];
    currentPos=[[CCDirector sharedDirector] convertToGL:currentPos];
    float diffX = currentPos.x - initialPos.x;
    float diffY = currentPos.y - initialPos.y;
    CGPoint velocity = ccp(diffX, diffY);
    initialPos = currentPos;
    [Sprite setPosition:ccpAdd([SmileBall position], velocity)];
}

我认为这会对你有所帮助:)

票数 1

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/23600420

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