cocos2d sprite 碰撞检测boundingbox

问题描述

我有 2 个精灵.我使用边界框来检查与 CGRectIntersectsRect 的碰撞.但它不起作用.HBBall 和 HBpaddle 都有一个名为 image 的 CCSprite.

I got 2 sprites. I use the boundingbox to check for collision with CGRectIntersectsRect. But it is not working. HBBall and HBpaddle has a CCSprite called image.

初始化:

    ball = [[HBBall alloc] init];
    ball.position = ccp(150, 50);
    [self addChild:ball];
    [update addObject:ball];

    paddle1 = [[HBPaddle alloc] init];
    paddle1.position = ccp(50, 160);
    [self addChild:paddle1];

更新:

if (CGRectIntersectsRect([paddle1.image boundingBox], [ball.image boundingBox])) 
    CCLOG(@"ball hit paddle");

CGRectIntersectsRect 总是返回 true.有人有想法吗?

CGRectIntersectsRect retuns always true. Does anyone have an idea?

推荐答案

你不能直接传递边界框，因为它是相对于精灵的.您必须像这样传递绝对 CGRect 边界框:

you cant pass directly the bounding box, because it's relative to the sprite. You MUST pass the absolute CGRect boundingbox like this:

s = CCsprite
s.anchorPoint = ccp(0, 0);    
CGRect absoluteBox = CGRectMake(s.position.x, s.position.y, [s boundingBox].size.width, [s boundingBox].size.height);

进行必要的调整！

希望能帮上忙！

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