iphone - 在 cocos2d 中启动和停止粒子系统

Question

拜托，我想问一下如何在 iOS /cocos2d 中启动粒子系统，让它运行一定的时间，比如 10 秒，然后让它停止。

一个小的代码片段或示例将作为指南将不胜感激。

谢谢

Answer 1

假设 ps 是你的粒子系统，你可以像这样启动和停止它：

[ps resetSystem]; // starts, newly created effects are already running
[ps stopSystem];  // stops

等待 10 秒可以通过以 10 秒间隔调度选择器来完成。

Answer 2

Hope it helps :)

-(void)addParticles
{
  [particles resetSystem]; //restarts particles
}

-(void)playParticles //call this later somewhere in your code e.g in touches began [self playParticles];
{
  id playParticles = [CCCallFuncN actionWithTarget:self selector:@selector(addParticles)];
  id stopParticles = [CCCallFuncN actionWithTarget:self selector:@selector(stopParticles)];
  id wait = [CCActionInterval actionWithDuration:3];
  CCSequence *Particlesbegin = [CCSequence actions:wait,playParticles,wait,stopParticles, nil];
  [self runAction: Particlesbegin];
}

-(void)stopParticles
 {
  [particles stopSystem];
 }



//in touches began
if(CGRectContainsPoint(Btn.boundingBox, location))
{
    [self playParticles];
}