我有一个CAEmitterCell
,我已经设置了一个特定的颜色。该文件说,this property is animatable,我想为我的游戏中的不同玩家(所有人在开始时选择他们的颜色)在许多不同颜色之间进行动画处理。动画CAEmitterCell颜色属性
这是我EmitterCell
,当我将它设置:
//
// Emitter Cells
//
// 'New Emitter' cell configuration
newEmitter = [CAEmitterCell emitterCell];
newEmitter.scaleSpeed = 10;
newEmitter.lifetime = 2.481715;
newEmitter.velocity = 332.3636968085106;
newEmitter.contents = newemitterImg;
newEmitter.name = @"New Emitter";
newEmitter.color = [[UIColor colorWithRed:0.50 green:0.00 blue:1.00 alpha:1.00] CGColor];
newEmitter.scaleRange = 4.178236607142859;
newEmitter.lifetimeRange = 1.6;
newEmitter.greenRange = -2.775558e-17;
newEmitter.birthRate = 40;
newEmitter.emissionRange = -6.283185306666667;
newEmitter.scale = 0;
//
// Emitter Cell Chains
//
emitter.emitterCells = [NSArray arrayWithObjects:newEmitter, nil];
而且这里是我在这种情况下,两种不同颜色之间只是弹跳测试颜色变化:
-(void)changeColor {
if (color == 0) {
color = 1;
NSLog(@"color = 1");
[UIView animateWithDuration:1.5 delay:0 options:0 animations:^{
newEmitter.color = [[UIColor colorWithRed:0.50 green:0.00 blue:1.00 alpha:1.00] CGColor];
} completion:^(BOOL finished) {[self performSelector:@selector(changeColor) withObject:nil afterDelay:2];}];
} else {
color = 0;
NSLog(@"color = 0");
[UIView animateWithDuration:1.5 delay:0 options:0 animations:^{
newEmitter.color = [[UIColor colorWithRed:1.00 green:0.50 blue:0.10 alpha:1.00] CGColor];
} completion:^(BOOL finished) {[self performSelector:@selector(changeColor) withObject:nil afterDelay:2];}];
}
}
然而,当我运行这个时,颜色永远不会改变。我是否误解了“Animatable”的性质,还是仅仅需要针对CAEmitterCell
以不同的方式去做?
如何ÿ你改变颜色?您的代码似乎不适用于更改颜色。 – Bobby