cocos2d的粒子窃听的设备

Question

我的颗粒在模拟器上工作正常，但是当我运行的应用程序与设备（iPhone 4S - 的iOS 6.1）看起来有些怪异的激光器（见下面的图片）：

https://dl.dropboxusercontent.com/u/58621241/IMG_2287.PNG

颗粒上模拟器：在装置中的颗粒 https://dl.dropboxusercontent.com/u/58621241/Screen%20Shot%202013-06-20%20at%2018.10.15.png

这里是我创建的粒子系统代码：

@implementation CCParticleMainDrill 
-(id) init 
{ 
    return [self initWithTotalParticles:100]; 
} 

-(id) initWithTotalParticles:(NSUInteger) p 
{ 
    if((self=[super initWithTotalParticles:p])) { 

     // _duration 
     _duration = kCCParticleDurationInfinity; 

     // Gravity Mode 
     self.emitterMode = kCCParticleModeGravity; 

     // Gravity Mode: gravity 
     self.gravity = ccp(0,100); 

     // Gravity Mode: speed of particles 
     self.speed = 400; 
     self.speedVar = 230; 

     // Gravity Mode: radial 
     self.radialAccel = 0; 
     self.radialAccelVar = 0; 

     // Gravity Mode: tagential 
     self.tangentialAccel = 0; 
     self.tangentialAccelVar = 0; 
     ccBlendFunc ccbf = {GL_DST_COLOR,GL_DST_ALPHA};//{GL_SRC_ALPHA,GL_SRC_ALPHA_SATURATE}; 

     self.blendFunc = ccbf; 

     // _angle 
     _angle = 90; 
     _angleVar = 60; 

     // emitter position 
     //CGSize winSize = [[CCDirector sharedDirector] winSize]; 
     self.positionType = kCCPositionTypeFree; 
     self.position = ccp(0, 0);// ccp(winSize.width/2, winSize.height/2); 
     self.posVar = ccp(3, 0); 

     // _life of particles 
     _life = 0.06; 
     _lifeVar = 0.1; 

     // size, in pixels 
     _startSize = 5.0f; 
     _startSizeVar = 1.0f; 
     _endSize = 3.0f; 
     _endSizeVar = 0.00f; 

     // emits per second 
     _emissionRate = _totalParticles/_life; 

     // color of particles 
     _startColor.r = 0.25f; 
     _startColor.g = 0.14f; 
     _startColor.b = 0.07f; 
     _startColor.a = 1.0f; 
     _startColorVar.r = 0.0f; 
     _startColorVar.g = 0.0f; 
     _startColorVar.b = 0.0f; 
     _startColorVar.a = 0.0f; 
     _endColor.r = 0.28f; 
     _endColor.g = 0.19f; 
     _endColor.b = 0.12f; 
     _endColor.a = 0.30f; 
     _endColorVar.r = 0.0f; 
     _endColorVar.g = 0.0f; 
     _endColorVar.b = 0.0f; 
     _endColorVar.a = 0.0f; 

     self.texture = [[CCTextureCache sharedTextureCache] addImage: @"particle.png"]; 

     // additive 
     self.blendAdditive = YES; 
    } 

    return self; 
} 
@end 

而这一次，当我颗粒添加到场景：

Armor = [CCSprite spriteWithFile:@"player.png"]; 
Armor.position = ccp(16, 16);  
[self addChild:Armor]; 
DrillParticles = [CCParticleMainDrill node];//[CCParticleSmoke node];  
[DrillParticles setPosition:ccp(Armor.boundingBox.size.width/2, 0)]; 
[DrillParticles setTotalParticles:0]; 
[Armor addChild:DrillParticles z:INT_MAX]; 

Answer 1

固定

我颗粒的数量，以此来暂停颗粒动画设置为0。它在模拟器上工作，但会导致设备上的错误。

我没有改变粒子的数量，而是创建了一个函数来改变_life和_lifeVar变量。现在它工作得很好。请参见下面的代码：

粒子系统接口

@interface CCParticleMainDrill : CCParticleSystemQuad 
{ 
    float _saved_life, _saved_lifeVar; 
} 
// needed for BridgeSupport 
-(void) SetActive:(BOOL) b; 
-(id) init; 
@end 

粒子系统实现

@implementation CCParticleMainDrill 
-(id) init 
{ 
    return [self initWithTotalParticles:100]; 
} 

-(void) SetActive:(BOOL) b 
{ 
    if (b) { 

     _life = _saved_life; 
     _lifeVar = _saved_lifeVar; 

    } 
    else 
    { 
     _saved_life = _life; 
     _saved_lifeVar = _lifeVar; 

     _lifeVar = 0; 
     _life = 0; 
    } 
} 

-(id) initWithTotalParticles:(NSUInteger) p 
{ 
    if((self=[super initWithTotalParticles:p])) { 

     // _duration 
     _duration = kCCParticleDurationInfinity; 

     // Gravity Mode 
     self.emitterMode = kCCParticleModeGravity; 

     // Gravity Mode: gravity 
     self.gravity = ccp(0,100); 

     // Gravity Mode: speed of particles 
     self.speed = 400; 
     self.speedVar = 230; 

     // Gravity Mode: radial 
     self.radialAccel = 0; 
     self.radialAccelVar = 0; 

     // Gravity Mode: tagential 
     self.tangentialAccel = 0; 
     self.tangentialAccelVar = 0; 
     ccBlendFunc ccbf = {GL_DST_COLOR,GL_DST_ALPHA};//{GL_SRC_ALPHA,GL_SRC_ALPHA_SATURATE}; 

     self.blendFunc = ccbf; 

     // _angle 
     _angle = 90; 
     _angleVar = 60; 

     // emitter position 
     //CGSize winSize = [[CCDirector sharedDirector] winSize]; 
     self.positionType = kCCPositionTypeFree; 
     self.position = ccp(0, 0);// ccp(winSize.width/2, winSize.height/2); 
     self.posVar = ccp(3, 0); 

     // _life of particles 
     _life = 0.06; 
     _lifeVar = 0.1; 

     // size, in pixels 
     _startSize = 5.0f; 
     _startSizeVar = 1.0f; 
     _endSize = 3.0f; 
     _endSizeVar = 0.00f; 

     // emits per second 
     _emissionRate = _totalParticles/_life; 

     // color of particles 
     _startColor.r = 0.25f; 
     _startColor.g = 0.14f; 
     _startColor.b = 0.07f; 
     _startColor.a = 1.0f; 
     _startColorVar.r = 0.0f; 
     _startColorVar.g = 0.0f; 
     _startColorVar.b = 0.0f; 
     _startColorVar.a = 0.0f; 
     _endColor.r = 0.28f; 
     _endColor.g = 0.19f; 
     _endColor.b = 0.12f; 
     _endColor.a = 0.30f; 
     _endColorVar.r = 0.0f; 
     _endColorVar.g = 0.0f; 
     _endColorVar.b = 0.0f; 
     _endColorVar.a = 0.0f; 

     NSString *path = [[NSBundle mainBundle] pathForResource:@"particle" ofType:@"png"]; 

     self.texture = [[CCTextureCache sharedTextureCache] addImage: path]; 

     _saved_life = _life; 
     _saved_lifeVar = _lifeVar; 

     // additive 
     self.blendAdditive = YES; 
    } 

    return self; 
} 
@end 

添加粒子与场景

-(id) init 
{ 
     Armor = [CCSprite spriteWithFile:@"player.png"]; 
     Armor.position = ccp(16, 16); 

     [self addChild:Armor]; 

     DrillParticles = [CCParticleMainDrill node];//[CCParticleSmoke node];// 

     [DrillParticles setPosition:ccp(Armor.boundingBox.size.width/2, 0)]; 
     //[DrillParticles setTotalParticles:0]; //BUGGED CODE 
     [Armor addChild:DrillParticles z:INT_MAX]; 
     [DrillParticles SetActive:NO]; 
} 
-(void) StopAnimation 
{ 
    [DrillParticles SetActive:NO]; 
    //[DrillParticles setTotalParticles:0]; // BUGGED CODE 
} 

-(void)StartAnimation 
{ 
    [DrillParticles SetActive:YES]; 
    //[DrillParticles setTotalParticles:100]; // BUGGED CODE 
}