IOS的一個關於球碰撞的小遊戲
阿新 • • 發佈:2019-01-25
這個遊戲是關於一個球隨機在螢幕上移動,可以用手指來操縱令一個球,如果兩個球碰撞到一起,就表示輸了,非常簡單的一個遊戲
在StoryBoard裡定義兩個UIImageView和一個start按鈕
然後把這兩個UIimageView跟程式碼連結
@property (weak, nonatomic)IBOutletUIImageView *player;
@property (weak, nonatomic)IBOutletUIImageView *enemy;
@property (weak, nonatomic)IBOutletUIButton *start;
在ViewDidLoad中定義球移動的速率
pos =CGPointMake(5.0,4.0);
如果點選了start按鈕程式碼可以在http://download.csdn.net/detail/baidu_nod/7556833下載- (IBAction)start:(id)sender { [self.start setHidden:YES]; //啟動一個timer,讓player這個球隨機移動 randomMain = [NSTimer scheduledTimerWithTimeInterval:0.03 target:self selector:@selector(onTimer) userInfo:nil repeats:YES]; } -(void)onTimer{ [self checkCollision]; self.enemy.center = CGPointMake(self.enemy.center.x+pos.x, self.enemy.center.y+pos.y); if (self.enemy.center.x > 320 || self.enemy.center.x < 0) { pos.x = -pos.x; } if (self.enemy.center.y > 480 || self.enemy.center.y < 0) { pos.y = -pos.y; } } -(void) checkCollision{ //檢測兩個球是否碰撞到一起了 if (CGRectIntersectsRect(self.player.frame, self.enemy.frame)) { [randomMain invalidate]; [self.start setHidden:NO]; CGRect frame = [self.player frame]; frame.origin.x = 137.0f; frame.origin.y = 326.0f; [self.player setFrame:frame]; CGRect frame2 = [self.enemy frame]; frame2.origin.x = 137.0f; frame2.origin.y = 20.0f; [self.enemy setFrame:frame2]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"ball is catched" message:@"you have to play again" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:nil]; [alert show]; } }