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        cocos2d sprite 碰撞检测boundingbox

        cocos2d sprite collision detection boundingbox(cocos2d sprite 碰撞检测boundingbox)

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                  本文介绍了cocos2d sprite 碰撞检测boundingbox的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  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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