如何使用CABasicAnimation水平移动球并将球停在正确的位置
我正在尝试写一个游戏，我对这个动画有点困惑。我有一个在我的屏幕上水平动画的球。这是代码：
CABasicAnimation *horizontalBallAnimation = [CABasicAnimation animationWithKeyPath:@"position"];
[horizontalBallAnimation setFromValue:[NSValue valueWithCGPoint:CGPointMake(50.0, 300.0 )]];
[horizontalBallAnimation setToValue:[NSValue valueWithCGPoint:CGPointMake(220.0, 300.0 )]];
horizontalBallAnimation.delegate = self;
horizontalBallAnimation.repeatCount = 1e100f;
//horizontalBallAnimation.autoreverses = YES;
horizontalBallAnimation.duration = 2.0;
[gameBallLayer addAnimation:horizontalBallAnimation forKey:@"horizontalBallAnimation"];
[gameLogic ballGameObject].x = [[[gameBallLayer presentationLayer] valueForKeyPath:@"position.x"] doubleValue];
[gameLogic ballGameObject].y = [[[gameBallLayer presentationLayer] valueForKeyPath:@"position.y"] doubleValue];
没有找到相关结果
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//-------------------------------------------------------------------------------------------------- #pragma mark - CAAnimation Delegate Methods //-------------------------------------------------------------------------------------------------- - (void)animationDidStart:(CAAnimation *)theAnimation { [CATransaction begin]; [CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions]; // Set the layer's target position here. [CATransaction commit]; }