mirror of https://github.com/axmolengine/axmol.git
99 lines
2.2 KiB
C++
99 lines
2.2 KiB
C++
/*
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* Copyright (c) 2011 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 CONVEYOR_BELT_H
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#define CONVEYOR_BELT_H
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class ConveyorBelt : public Test
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{
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public:
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ConveyorBelt()
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{
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// Ground
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{
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b2BodyDef bd;
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b2Body* 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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ground->CreateFixture(&shape, 0.0f);
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}
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// Platform
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{
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b2BodyDef bd;
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bd.position.Set(-5.0f, 5.0f);
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b2Body* body = m_world->CreateBody(&bd);
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b2PolygonShape shape;
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shape.SetAsBox(10.0f, 0.5f);
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.friction = 0.8f;
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m_platform = body->CreateFixture(&fd);
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}
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// Boxes
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for (int32 i = 0; i < 5; ++i)
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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(-10.0f + 2.0f * i, 7.0f);
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b2Body* body = m_world->CreateBody(&bd);
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b2PolygonShape shape;
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shape.SetAsBox(0.5f, 0.5f);
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body->CreateFixture(&shape, 20.0f);
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}
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}
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void PreSolve(b2Contact* contact, const b2Manifold* oldManifold)
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{
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Test::PreSolve(contact, oldManifold);
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b2Fixture* fixtureA = contact->GetFixtureA();
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b2Fixture* fixtureB = contact->GetFixtureB();
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if (fixtureA == m_platform)
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{
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contact->SetTangentSpeed(5.0f);
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}
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if (fixtureB == m_platform)
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{
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contact->SetTangentSpeed(-5.0f);
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}
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}
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void Step(Settings* settings)
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{
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Test::Step(settings);
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}
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static Test* Create()
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{
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return new ConveyorBelt;
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}
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b2Fixture* m_platform;
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};
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#endif
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