《Flash_BOX2D入门教程》.pdf

BOX2D.Dynamics BOX2D.Collision碰 BOX2D.Collision.Shapes碰 BOX2D.Common.Math BOX2D.Dynamics.Joints关 b2World构 world=newb2World(worldAABB,gravity,doSleep); 2.01 worldAABB worldAABB.lowerBound.set() worldAABB.upperBound.set() world.CreateBody(bodyDef); b2Body varbody:b2Body=world.CreateBody(bodyDef); body=world.CreateBody(bodyDef); body.CreateFixture(fixtureDef); b2BodyDef varbodyDef:b2BodyDef=newb2BodyDef(); bodyDef.position.Set(250/30,200/30); bodyDef.type=b2Body.b2_dynamicBody; bodyDef.allowSleep=false/true; b2RevoluteJointDef关 varfront_motor=newb2RevoluteJointDef(); front_motor.enableMotor=true/false front_motor.maxMotorTorque扭 rear_motor.Initialize(car_body,rear_wheel, rear_wheel.GetWorldCenter());(), rear_wheel.GetWorldCenter() fixtureDef varfixtureDef:b2FixtureDef=newb2FixtureDef(); fixtureDef.friction=01 fixtureDef.density=01 fixtureDef.shape=boxDef;boxDef.SetAsBox(50/30,10/30) fixtureDef.restitution=0.1 b2RevoluteJoint关 varrear_motor_added:b2RevoluteJoint front_motor_added.SetMotorSpeed num达运 /*varworldAABB:b2AABB=newb2AABB(); worldAABB.lowerBound.Set(100,100); worldAABB.upperBound.Set(100,100);*/ world=newb2World(worldAABB,newb2Vec2(0,10.0),true);2.0.1 //2.1a world=newb2World newb2Vec2(0,10.0),true world=newb2World , world.CreateJoint(rear_motor)asb2RevoluteJoint关 b2Vec2