在 cocos2d 中创建物理体

creating Physic body in cocos2d(在 cocos2d 中创建物理体)
本文介绍了在 cocos2d 中创建物理体的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在 box2d 中创建物理身体,如下所示,这是我的代码

I am creating the physical body in box2d as below , this si my code

 b2BodyDef carBodyDef;
carBodyDef.position.Set(x/PTM_RATIO,y/PTM_RATIO);
carBodyDef.type=b2_dynamicBody;    b2Body* carBody=physicsWorld->CreateBody(&carBodyDef);

b2CircleShape carShape;
carShape.m_radius=rad/40.0f;


b2FixtureDef carFixture;
carFixture.shape=&carShape;
carFixture.density = 1.0f;
carFixture.friction = 0.0f;

carBody->CreateFixture(&carFixture);

return carBody ;

当我运行应用程序时,它会崩溃,有以下错误*断言失败:(IsLocked() == false),函数 CreateBody,*in box2d

When am running the app, its getting crash , with the below erro *Assertion failed: (IsLocked() == false), function CreateBody,*in box2d

推荐答案

那是因为你在执行 b2WorldStep() 函数时创建了你的 body.执行此函数时无法创建新实体

That's because you are creating your body during execution of Step() function of b2World. You can't create new bodies while this function is executing

这篇关于在 cocos2d 中创建物理体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编程学习网!

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除!

相关文档推荐

Pushing UIViewController above UITabBar(将UIView控制器推送到UITabBar上方)
java.lang.IllegalStateException: SimpleTypeImpl should not be created for error type(异常:不应为错误类型创建SimpleTypeImpl)
Android IllegalArgumentException: The tag for fragment_XXX is invalid. Received: layout-sw600dp/fragment_XXX_0(Android IlLegalArgumentException:Fragment_XXX的标签无效。收到:Layout-sw600dp/Fragment_XXX_0)
iOS convert audio sample rate from 16 kHz to 8 kHz(IOS将音频采样率从16 kHz转换为8 kHz)
Enforcing an audio sampling rate in iOS(在iOS中强制音频采样率)
HTTPS request using volley(使用 volley 的 HTTPS 请求)