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Viewing changes to tests/box2d/Testbed/Tests/BodyTypes.h

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2013-05-02 13:11:51 UTC
  • Revision ID: package-import@ubuntu.com-20130502131151-q8dvteqr1ef2x7xz
Tags: upstream-1.4.1~20130504~adb56cb
Import upstream version 1.4.1~20130504~adb56cb

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tests/box2d/Testbed/Tests/BodyTypes.h
 
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/*
 
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* Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
 
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*
 
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* This software is provided 'as-is', without any express or implied
 
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* warranty.  In no event will the authors be held liable for any damages
 
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* arising from the use of this software.
 
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* Permission is granted to anyone to use this software for any purpose,
 
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* including commercial applications, and to alter it and redistribute it
 
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* freely, subject to the following restrictions:
 
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* 1. The origin of this software must not be misrepresented; you must not
 
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* claim that you wrote the original software. If you use this software
 
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* in a product, an acknowledgment in the product documentation would be
 
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* appreciated but is not required.
 
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* 2. Altered source versions must be plainly marked as such, and must not be
 
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* misrepresented as being the original software.
 
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* 3. This notice may not be removed or altered from any source distribution.
 
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*/
 
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#ifndef BODY_TYPES_H
 
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#define BODY_TYPES_H
 
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class BodyTypes : public Test
 
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{
 
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public:
 
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        BodyTypes()
 
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        {
 
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                b2Body* ground = NULL;
 
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                {
 
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                        b2BodyDef bd;
 
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                        ground = m_world->CreateBody(&bd);
 
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                        b2EdgeShape shape;
 
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                        shape.Set(b2Vec2(-20.0f, 0.0f), b2Vec2(20.0f, 0.0f));
 
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                        b2FixtureDef fd;
 
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                        fd.shape = &shape;
 
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                        ground->CreateFixture(&fd);
 
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                }
 
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                // Define attachment
 
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                {
 
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                        b2BodyDef bd;
 
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                        bd.type = b2_dynamicBody;
 
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                        bd.position.Set(0.0f, 3.0f);
 
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                        m_attachment = m_world->CreateBody(&bd);
 
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                        b2PolygonShape shape;
 
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                        shape.SetAsBox(0.5f, 2.0f);
 
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                        m_attachment->CreateFixture(&shape, 2.0f);
 
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                }
 
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                // Define platform
 
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                {
 
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                        b2BodyDef bd;
 
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                        bd.type = b2_dynamicBody;
 
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                        bd.position.Set(-4.0f, 5.0f);
 
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                        m_platform = m_world->CreateBody(&bd);
 
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                        b2PolygonShape shape;
 
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                        shape.SetAsBox(0.5f, 4.0f, b2Vec2(4.0f, 0.0f), 0.5f * b2_pi);
 
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                        b2FixtureDef fd;
 
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                        fd.shape = &shape;
 
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                        fd.friction = 0.6f;
 
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                        fd.density = 2.0f;
 
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                        m_platform->CreateFixture(&fd);
 
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                        b2RevoluteJointDef rjd;
 
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                        rjd.Initialize(m_attachment, m_platform, b2Vec2(0.0f, 5.0f));
 
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                        rjd.maxMotorTorque = 50.0f;
 
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                        rjd.enableMotor = true;
 
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                        m_world->CreateJoint(&rjd);
 
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                        b2PrismaticJointDef pjd;
 
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                        pjd.Initialize(ground, m_platform, b2Vec2(0.0f, 5.0f), b2Vec2(1.0f, 0.0f));
 
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                        pjd.maxMotorForce = 1000.0f;
 
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                        pjd.enableMotor = true;
 
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                        pjd.lowerTranslation = -10.0f;
 
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                        pjd.upperTranslation = 10.0f;
 
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                        pjd.enableLimit = true;
 
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                        m_world->CreateJoint(&pjd);
 
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                        m_speed = 3.0f;
 
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                }
 
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                // Create a payload
 
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                {
 
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                        b2BodyDef bd;
 
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                        bd.type = b2_dynamicBody;
 
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                        bd.position.Set(0.0f, 8.0f);
 
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                        b2Body* body = m_world->CreateBody(&bd);
 
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                        b2PolygonShape shape;
 
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                        shape.SetAsBox(0.75f, 0.75f);
 
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                        b2FixtureDef fd;
 
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                        fd.shape = &shape;
 
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                        fd.friction = 0.6f;
 
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                        fd.density = 2.0f;
 
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                        body->CreateFixture(&fd);
 
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                }
 
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        }
 
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        void Keyboard(unsigned char key)
 
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        {
 
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                switch (key)
 
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                {
 
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                case 'd':
 
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                        m_platform->SetType(b2_dynamicBody);
 
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                        break;
 
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                case 's':
 
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                        m_platform->SetType(b2_staticBody);
 
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                        break;
 
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                case 'k':
 
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                        m_platform->SetType(b2_kinematicBody);
 
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                        m_platform->SetLinearVelocity(b2Vec2(-m_speed, 0.0f));
 
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                        m_platform->SetAngularVelocity(0.0f);
 
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                        break;
 
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                }
 
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        }
 
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        void Step(Settings* settings)
 
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        {
 
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                // Drive the kinematic body.
 
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                if (m_platform->GetType() == b2_kinematicBody)
 
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                {
 
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                        b2Vec2 p = m_platform->GetTransform().p;
 
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                        b2Vec2 v = m_platform->GetLinearVelocity();
 
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                        if ((p.x < -10.0f && v.x < 0.0f) ||
 
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                                (p.x > 10.0f && v.x > 0.0f))
 
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                        {
 
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                                v.x = -v.x;
 
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                                m_platform->SetLinearVelocity(v);
 
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                        }
 
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                }
 
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                Test::Step(settings);
 
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                m_debugDraw.DrawString(5, m_textLine, "Keys: (d) dynamic, (s) static, (k) kinematic");
 
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                m_textLine += 15;
 
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        }
 
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        static Test* Create()
 
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        {
 
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                return new BodyTypes;
 
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        }
 
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        b2Body* m_attachment;
 
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        b2Body* m_platform;
 
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        float32 m_speed;
 
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};
 
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#endif