coco2dx-关于精灵的简单碰撞检测-随心

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1.两个精灵在同一个父类上，代码如下

CCRect r1 = spr1->boundingBox();
CCRect r2 = spr2->boundingBox();// 判断是否有交叉
if (r1.intersectsRect(r2)) {
CCLOG("---%s---", "相碰撞了");
}

2.两个精灵不在同一个父类上，代码如下

void collisionDetection(Node* node_1, Node* node_2){
//先转换为世界坐标Point worldPoint1 = node_1->convertToWorldSpace(node_1->getAnchorPointInPoints());Point worldPoint2 = node_2->convertToWorldSpace(node_2->getAnchorPointInPoints());
//获取他们的大小Size contentSize1 = node_1->getContentSize();Size contentSize2 = node_2->getContentSize();
//获得他们的锚点,因为要把坐标转换为左下角的坐标Point anchorPoint1 = node_1->getAnchorPoint();Point anchorPoint2 = node_2->getAnchorPoint();
//构造他们的RectRect r1 = Rect(worldPoint1.x - contentSize1.width * anchorPoint1.x, worldPoint1.y - contentSize1.height * anchorPoint1.y, contentSize1.width, contentSize1.height);Rect r2 = Rect(worldPoint2.x - contentSize2.width * anchorPoint2.x, worldPoint2.y - contentSize2.height * anchorPoint2.y, contentSize2.width, contentSize2.height);if (r1.intersectsRect(r2)){CCLOG("---%s---", "相碰撞了");}
}

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