0 环境

vs: vs2012
box2d: Box2D_v2.1.2

1 得到box2d编译版本

可以参考：
https://blog.csdn.net/sty945/article/details/83823976

现在我们得到一个可以用vs2012打开的box2d版本，用vs2012打开如下图所示：

2 运行Testbed的项目

将testbed项目设置成启动项目，然后F7编译， Ctrl+F5运行就可以得到如下界面：

我们可以做一些演示练习

3 基于Testbed项目编写程序

推荐一个box2d教程：
http://ohcoder.com/blog/categories/box2d-tutorials/

我们如何编写自己的程序呢？
在vs2012中直接添加文件是不对的，添加文件只会添加到build目录下，必须要和原始文件在同一目录下才可以，以下是我采用的方法：

3.1 采用vscode打开源代码

路径是…\Box2D_v2.1.2\Box2D文件夹，会得到如下的界面：

3.2 打开testbed文件夹

3.3 创建测试

Testbed/Tests文件夹下面，添加自己创建的.h头文件，如创建一个FooTest.h，写入如下内容：

#ifndef FOO_TEST_H
#define FOO_TEST_H#define DEGTORAD 0.0174532925199432957f
#define RADTODEG 57.295779513082320876fclass FooTest: public Test
{public:b2Body* dynamicBody;FooTest(){b2BodyDef myBodyDef;myBodyDef.type = b2_dynamicBody;//start 10 units further to the right, 20 units highermyBodyDef.position.Set(0, 20);myBodyDef.angle = 0;// b2Body* dynamicBody = m_world->CreateBody(&myBodyDef);dynamicBody = m_world->CreateBody(&myBodyDef);b2PolygonShape boxShape;boxShape.SetAsBox(2, 1);b2FixtureDef boxFixtureDef;boxFixtureDef.shape = &boxShape;boxFixtureDef.density = 1;dynamicBody->CreateFixture(&boxFixtureDef);//change the starting position and angledynamicBody->SetTransform(b2Vec2(10, 20), 1);// set the linear velocity and angular velocity of the bodydynamicBody->SetLinearVelocity(b2Vec2(-5, 5));dynamicBody->SetAngularVelocity(-90 * DEGTORAD);//static BodiesmyBodyDef.type = b2_staticBody;myBodyDef.position.Set(0, 10);b2Body* staticBody = m_world->CreateBody(&myBodyDef);staticBody->CreateFixture(&boxFixtureDef);//kinematic bodymyBodyDef.type = b2_kinematicBody;myBodyDef.position.Set(-18, 11);b2Body* kinematicBody = m_world->CreateBody(&myBodyDef);kinematicBody->CreateFixture(&boxFixtureDef);kinematicBody->SetLinearVelocity(b2Vec2(1, 0));kinematicBody->SetAngularVelocity(360 * DEGTORAD);};void Step(Settings* setttings){Test::Step(setttings);m_debugDraw.DrawString(5, m_textLine, "now we have a foo test");m_textLine += 15;b2Vec2 pos = dynamicBody->GetPosition();float angle = dynamicBody->GetAngle();b2Vec2 vel = dynamicBody->GetLinearVelocity();float angularvel = dynamicBody->GetAngularVelocity();m_debugDraw.DrawString(5, m_textLine, "Position:%.3f,%.3f Angle:%.3f", pos.x, pos.y, angle*RADTODEG);m_textLine += 15;m_debugDraw.DrawString(5, m_textLine, "Veloctiy:%.3f, %.3f Angular velocity:%.3f", vel.x, vel.y, angularvel * RADTODEG);m_textLine += 15;for (b2Body* b = m_world->GetBodyList(); b; b = b->GetNext()){b2Vec2 pos1 = b->GetPosition();m_debugDraw.DrawString(5, m_textLine, "Position:%.3f,%.3f", pos1.x, pos1.y);m_textLine += 15;}}static Test* Create(){return new FooTest;}
};#endif

然后在同一目录下的TestEntries.cpp文件添加如下两行代码：

#include "FooTest.h"{"Foo test", FooTest::Create},

3.4 运行测试

在vs2012中编译运行，会出现如下界面：

第一个演示的就是我们刚才编写的程序。
基于此就可以根据教程：
http://ohcoder.com/blog/categories/box2d-tutorials/
基于学习Box2D了