在cocos2d中启动和停止粒子系统

Question

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，然后停止。

一个小的代码片段或例子，将作为一个指南，将不胜感激。

感谢

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秒可以完成以10秒间隔调度选择器。

Answer 2

希望它能有所帮助：）

-(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];
}