//CGRectContainsRect(<#CGRect rect1#>, <#CGRect rect2#>)判断两个区域是否重叠
判断给定的点是否被一个CGRect包含,可以用CGRectContainsPoint函数
BOOL contains = CGRectContainsPoint(CGRect rect, CGPoint point);
判断一个CGRect是否包含再另一个CGRect里面,常用与测试给定的对象之间是否又重叠
BOOL contains = CGRectContainsRect(CGRect rect1, CGRect rect2);
判断两个结构体是否有交错.可以用CGRectIntersectsRect
BOOL contains = CGRectIntersectsRect(CGRect rect1, CGRect rect2);
float float_ = CGRectGetMaxX(CGRect rect);返回矩形右边缘的坐标
CGRectGetMaxY返回矩形顶部的坐标
CGRectGetMidX返回矩形中心X的坐标
CGRectGetMidY返回矩形中心Y的坐标
CGRectGetMinX返回矩形左边缘的坐标
CGRectGetMinY返回矩形底部的坐标
CGRectContainsPoint 看参数说明，一个点是否包含在矩形中，所以参数为一个点一个矩形
//爆炸图片数组创建
boomImageArray= [[NSMutable Arrayalloc]init];
for(inti = 0; i < 5 ; i++) {
UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:@"bz%d",i+1]];
[boomImage ArrayaddObject:image];
}
for(UIImageView *_emenyPlane in emenyPlaneArray) {
//敌机与子弹的碰撞
for(UIImageView *_myBullet in myBulletArray) {
//CGRectContainsRect(<#CGRect rect1#>, <#CGRect rect2#>)判断两个区域是否重叠
if(CGRectContainsPoint(_emenyPlane.frame, _myBullet.center)){
UIImageView *boomImageView = [[UIImageView alloc] initWithFrame:_emenyPlane.frame];
[self.view addSubview:boomImageView];
boomImageView.alpha= 0.8;
boomImageView.animationDuration= 0.5;
boomImageView.animationImages=boomImageArray;
boomImageView.animationRepeatCount= 1;
[boomImageView startAnimating];
//_emenyPlane.frame = CGRectMake(0, -40, 40, 40);
_emenyPlane.tag= 100;
//_myBullet.frame = CGRectMake(_MyPlane1.frame.origin.x+25,-10, 5, 10);
//_myBullet.tag = 100;
//延迟时间去执行移除视图操作
[self performSelector:@selector(removeBoomView:) withObject:boomImageView afterDelay:0.5];
}
}
