//CGRectContainsRect(<#CGRect rect1#>, <#CGRect rect2#>)判斷兩個區域是否重疊

判斷給定的點是否被一個CGRect包含,可以用CGRectContainsPoint函數

BOOL contains = CGRectContainsPoint(CGRect rect, CGPoint point);

判斷一個CGRect是否包含再另一個CGRect里面,常用與測試給定的對象之間是否又重疊

BOOL contains = CGRectContainsRect(CGRect rect1, CGRect rect2);

判斷兩個結構體是否有交錯.可以用CGRectIntersectsRect

BOOL contains = CGRectIntersectsRect(CGRect rect1, CGRect rect2);

float float_ = CGRectGetMaxX(CGRect rect);返回矩形右邊緣的坐標

CGRectGetMaxY返回矩形頂部的坐標

CGRectGetMidX返回矩形中心X的坐標

CGRectGetMidY返回矩形中心Y的坐標

CGRectGetMinX返回矩形左邊緣的坐標

CGRectGetMinY返回矩形底部的坐標

CGRectContainsPoint 看參數說明，一個點是否包含在矩形中，所以參數為一個點一個矩形

//爆炸圖片數組創建

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) {

//敵機與子彈的碰撞

for(UIImageView *_myBullet in myBulletArray) {

//CGRectContainsRect(<#CGRect rect1#>, <#CGRect rect2#>)判斷兩個區域是否重疊

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;

//延遲時間去執行移除視圖操作

[self performSelector:@selector(removeBoomView:) withObject:boomImageView afterDelay:0.5];

}

}