SKShapeNode的内存增长无限 [英] SKShapeNode has unbounded memory growth

问题描述

如果我在SKScene子类初始化方法中运行此代码

If I run this code in a SKScene sublass init method

for (int i = 0; i < 100; i++) {

            SKShapeNode *shape = [SKShapeNode node];

            shape.antialiased = NO;

            CGMutablePathRef path = CGPathCreateMutable();

            CGPathAddEllipseInRect(path, NULL, CGRectMake(arc4random()%320, arc4random()%320, 10, 10));

            shape.path = path;

            [shape setStrokeColor:[UIColor blackColor]];

            CGPathRelease(path);

            [self addChild:shape];

            [shape removeFromParent];

        }

每次我在SKView控制器中运行此代码

and everytime I run this code in my SKView controlling controller

SKView * skView = (SKView *)self.view;

// Create and configure the scene.

SKScene * scene = [ZTMyScene sceneWithSize:skView.bounds.size];

scene.scaleMode = SKSceneScaleModeAspectFill;



// Present the scene.

[skView presentScene:scene];

我的内存使用量一直在增长，直到内存已满并崩溃。如果我使用SKSpriteNode，则不会发生这种情况。有没有人解决这个问题？

my memory usage grow until the memory is full and crashes. This does not happen if I use a SKSpriteNode. Has anyone a fix for this?

总结：我创建了精灵工具包模板项目，添加了很多SKShapeNodes并用新的替换旧的SKScene。

Summary: I create the sprite kit template project, add a lot of SKShapeNodes and replace the old SKScene with a new one.

我向github添加了一个示例项目 https://github.com/ zeiteisen / MemoryTest

I added a sample project to github https://github.com/zeiteisen/MemoryTest

推荐答案

我在阅读另一篇文章时意识到了这个问题。我用 SKShapeNode 搞砸了一下，确实验证了这里指出的内存泄漏问题。

I became aware of this issue while reading another post. I messed around with SKShapeNode a bit and indeed verified the memory leak issue pinpointed here.

在这样做时，我有一个想法...

While doing that, I had an idea...

不是一个新想法，更多是一个改变用途的想法。这个奇妙的想法实际上允许我使用SKShapeNodes到我心中的内容：）

Not really a new idea, more of a repurposed one. This wonderful idea actually allowed me to use SKShapeNodes to my hearts content :)

POOLING

是的......我刚创建了一个SKShapeNodes池，我根据需要重用了它。这有什么区别:) :)

Yep... I just created a pool of SKShapeNodes that I reused as needed. What a difference that makes :)

您只需在需要时重新定义路径，使用返回游泳池完成后，它将等待您玩游戏稍后再次。

You simply redefine the path whenever needed, when done using return to your pool, and it'll be waiting there for you to play with again at a later time.

在 SKScene中创建一个ivar或属性 NSMutableArray / code>调用pool并在初始化 SKScene 时创建它。您可以在初始化期间使用形状节点填充数组，也可以根据需要创建它们。

Create a ivar or property NSMutableArray in your SKScene called pool and create it when you init the SKScene. You can either populate the array with your shape nodes during init, or you can create them as needed.

这是我创建的用于从中获取新节点的快速方法游泳池：

This is something quick method I created for grabbing a new node from the pool :

-(SKShapeNode *)getShapeNode
{
    if (pool.count > 0)
    {
        SKShapeNode *shape = pool[0];
        [pool removeObject:shape];
        return shape;
    }

    // if there is not any nodes left in the pool, create a new one to return
    SKShapeNode *shape = [SKShapeNode node];

    return shape;
}

因此，无论你在场景中需要SKShapeNode，你都可以这样做：

So wherever in the scene you need a SKShapeNode you'd do this :

SKShapeNode *shape = [self getShapeNode];
// do whatever you need to do with the instance

当你完成使用shape节点，只需将其返回到池并将路径设置为NULL，例如：

When you are done using the shape node, just return it to the pool and set the path to NULL, for example :

[pool addObject:shape];
[shape removeFromParent];
shape.path = NULL;

我知道这是一种解决方法而不是理想的解决方案，但对于任何人来说，这肯定是一种非常可行的解决方法想要使用大量的SKShapeNodes而不是出血记忆。

I know it's a workaround and not an ideal solution, but certainly this is a very viable workaround for anyone wanting to use a large number of SKShapeNodes and not bleed memory.

这篇关于SKShapeNode的内存增长无限的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！