我使用ARC进行内存管理。
在游戏开始之前，我使用一个预加载场景，我加载了很多CCParticleSystemQuad对象，我将在游戏中使用它。这部分一切顺利，这是我的代码：
//
// ReadySteadyGo.m
//
// Created by Nik on 23/05/13.
// Copyright 2013 __MyCompanyName__. All rights reserved.
//
#import "ReadySteadyGoLayer.h"
#import "QuickStartLayer.h"
@implementation ReadySteadyGoLayer
// Helper class method that creates a Scene with the ReadySteadyLayer as the only child.
+(CCScene *) scene{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
// 'layer' is an autorelease object.
ReadySteadyGoLayer *layer = [ReadySteadyGoLayer node];
// add layer as a child to scene
[scene addChild: layer];
// return the scene
return scene;
}
@synthesize particleExplosion;
// on "init" you need to initialize your instance
-(id) init
{
// always call "super" init
if( (self=[super init]) ) {
compteur = 3;
plus10LablesArray = [[NSMutableArray alloc] initWithCapacity:400];
whiteParticlesArray = [[NSMutableArray alloc] initWithCapacity:500];
bombParticlesArray = [[NSMutableArray alloc] initWithCapacity:50];
self.particleExplosion = [[CCParticleSystemQuad alloc] init];
bombExplosion = [[CCParticleSystemQuad alloc] init];
plus10Label = [[CCLabelTTF alloc] init];
displayCompteur = [[CCLabelTTF alloc] init];
self.particleExplosion = [CCParticleSystemQuad particleWithFile:@"whiteExplosion.plist"];
bombExplosion = [CCParticleSystemQuad particleWithFile:@"explosion.plist"];
}
[self schedule:@selector(initAll)];
[self schedule:@selector(compt)];
return self;
}
-(void)initAll{
// Create a new NSOperationQueue instance.
operationQueue = [[NSOperationQueue alloc] init];
// Create a new NSOperation object using the NSInvocationOperation subclass.
// Tell it to run the counterTask method.
NSInvocationOperation *operation1 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(initWhiteParticles)
object:nil];
NSInvocationOperation *operation2 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(initBombParticles)
object:nil];
NSInvocationOperation *operation3 = [[NSInvocationOperation alloc] initWithTarget:self
selector:@selector(initPlus10Labels)
object:nil];
// Add the operation to the queue and let it to be executed.
[operationQueue addOperation:operation1];
[operationQueue addOperation:operation2];
[operationQueue addOperation:operation3];
[self unschedule:@selector(initAll)];
}
- (void)compt{
CGSize winSize = [CCDirector sharedDirector].winSize;
if (compteur == 3){
displayCompteur = [CCLabelTTF labelWithString:[NSString stringWithFormat:@"%i...", compteur] fontName:@"Helvetica" fontSize:120];
displayCompteur.position = ccp(winSize.width/2, winSize.height/2);
[self addChild:displayCompteur z:1000];
compteur--;
[self unschedule:@selector(compt)];
[self schedule:@selector(boucle) interval:1.0f];
}
else if (compteur == 2){
displayCompteur.string = [NSString stringWithFormat:@"%i..", compteur];
compteur--;
[self schedule:@selector(compt) interval:1.0f];
}
else if (compteur == 1){
displayCompteur.string = [NSString stringWithFormat:@"%i.", compteur];
compteur--;
[self schedule:@selector(compt) interval:1.0f];
}
else if (compteur == 0){
displayCompteur.string = @"GO";
displayCompteur.fontSize = 25;
compteur--;
[self schedule:@selector(compt) interval:1.0f];
}
else{
[self unschedule:@selector(compt)];
[[CCDirector sharedDirector] pushScene:[QuickStartLayer scene:plus10LablesArray:whiteParticlesArray: bombParticlesArray]];
}
}
- (void)initWhiteParticles{
int index = 0;
for (index = 0; index < 500; index++) {
self.particleExplosion = [CCParticleSystemQuad particleWithFile:@"whiteExplosion.plist"];
[whiteParticlesArray performSelectorOnMainThread:@selector(addObject:) withObject:self.particleExplosion waitUntilDone:NO];
}
}
- (void)initBombParticles{
int index = 0;
for (index = 0; index < 50; index++) {
bombExplosion = [CCParticleSystemQuad particleWithFile:@"explosion.plist"];
[bombParticlesArray performSelectorOnMainThread:@selector(addObject:) withObject:bombExplosion waitUntilDone:NO];
}
}
- (void)initPlus10Labels{
int index = 0;
for (index = 0; index < 400; index++) {
plus10Label = [CCLabelTTF labelWithString:@"+10" fontName:@"Helvetica" fontSize:20];
[plus10LablesArray performSelectorOnMainThread:@selector(addObject:) withObject:plus10Label waitUntilDone:NO];
}
}
@end
问题是，当我检查仪器（分配）时，我可以看到[CCParticleSystemQuad alloc memory]每次增加。使用我的游戏15分钟后，它崩溃了......
当我使用我的粒子时，我这样做：
explosion = [_whiteParticlesArray objectAtIndex:nextWhiteParticle];
nextWhiteParticle++;
explosion.position = ccp(posX, posY);
[particleToDelete addObject:explosion];
[self addChild: explosion];
我创建了一个清除粒子的函数：
- (void)cleanParticles{
for (int i = 0; i < [particleToDelete count]; i++) {
id object = [particleToDelete objectAtIndex:i];
[particleToDelete removeObject:object];
[self removeChild:object cleanup:YES];
}
}
比赛结束时我就是这样做的：
[self unschedule:@selector(countDown:)];
[self unschedule:@selector(addAllSprites:)]
[self unschedule:@selector(displayScore:)];
[self unschedule:@selector(cleanParticles)];
[self unschedule:@selector(cleanLabels)];
[_whiteParticlesArray removeAllObjects];
[_bombParticlesArray removeAllObjects];
[_plus10LabelsArray removeAllObjects];
[self removeChild:_spriteSheet cleanup:YES];
所以我删除了所有对象，ARC应该清理那些对象的内存吗？问题是它没有。
感谢您的帮助：）。
修改1 ：
我真的被卡住了...我删除了我的NSMutableArray中的所有对象，但ARC没有释放它们。有人求助吗？
THX
答案 0 :(得分：0)
那个看起来很明显。您将所有粒子存储在_whiteParticlesArray中，对吗？因此，只要粒子仍在该数组中，它们将被数组保留并保留在内存中。
当你删除所有对象并且内存使用量没有（显着）改变时，你可能还有其他泄漏。您应该在仪器中检查的一件事是有多少粒子物体存活。并确保在更改场景后验证场景实例本身是否已取消分配。
顺便说一下，提前创建数百个粒子系统并不是很有效。在需要时创建粒子时是否存在性能问题？如果没有，请动态创建它们。请记住，每个粒子系统本身使用大约500个字节，因此500个粒子系统仅为类实例大约250 KB。
你仍然可以预加载纹理，这是最重要的部分。您需要做的就是创建一个使用嵌入纹理的粒子类型之一，或使用纹理缓存来预加载没有嵌入纹理的粒子系统plists的纹理。