Dominos.h
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上传日期:2022-01-07
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- /*
- * Copyright (c) 2006-2009 Erin Catto http://www.gphysics.com
- *
- * This software is provided 'as-is', without any express or implied
- * warranty. In no event will the authors be held liable for any damages
- * arising from the use of this software.
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software
- * in a product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- * 2. Altered source versions must be plainly marked as such, and must not be
- * misrepresented as being the original software.
- * 3. This notice may not be removed or altered from any source distribution.
- */
- #ifndef DOMINOS_H
- #define DOMINOS_H
- class Dominos : public Test
- {
- public:
- Dominos()
- {
- b2Body* b1;
- {
- b2PolygonShape shape;
- shape.SetAsEdge(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
- b2BodyDef bd;
- b1 = m_world->CreateBody(&bd);
- b1->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(6.0f, 0.25f);
- b2BodyDef bd;
- bd.position.Set(-1.5f, 10.0f);
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.1f, 1.0f);
- b2FixtureDef fd;
- fd.shape = &shape;
- fd.density = 20.0f;
- fd.friction = 0.1f;
- for (int i = 0; i < 10; ++i)
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(-6.0f + 1.0f * i, 11.25f);
- b2Body* body = m_world->CreateBody(&bd);
- body->CreateFixture(&fd);
- }
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(7.0f, 0.25f, b2Vec2_zero, 0.3f);
- b2BodyDef bd;
- bd.position.Set(1.0f, 6.0f);
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- b2Body* b2;
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.25f, 1.5f);
- b2BodyDef bd;
- bd.position.Set(-7.0f, 4.0f);
- b2 = m_world->CreateBody(&bd);
- b2->CreateFixture(&shape, 0.0f);
- }
- b2Body* b3;
- {
- b2PolygonShape shape;
- shape.SetAsBox(6.0f, 0.125f);
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(-0.9f, 1.0f);
- bd.angle = -0.15f;
- b3 = m_world->CreateBody(&bd);
- b3->CreateFixture(&shape, 10.0f);
- }
- b2RevoluteJointDef jd;
- b2Vec2 anchor;
- anchor.Set(-2.0f, 1.0f);
- jd.Initialize(b1, b3, anchor);
- jd.collideConnected = true;
- m_world->CreateJoint(&jd);
- b2Body* b4;
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.25f, 0.25f);
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(-10.0f, 15.0f);
- b4 = m_world->CreateBody(&bd);
- b4->CreateFixture(&shape, 10.0f);
- }
- anchor.Set(-7.0f, 15.0f);
- jd.Initialize(b2, b4, anchor);
- m_world->CreateJoint(&jd);
- b2Body* b5;
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(6.5f, 3.0f);
- b5 = m_world->CreateBody(&bd);
- b2PolygonShape shape;
- b2FixtureDef fd;
- fd.shape = &shape;
- fd.density = 10.0f;
- fd.friction = 0.1f;
- shape.SetAsBox(1.0f, 0.1f, b2Vec2(0.0f, -0.9f), 0.0f);
- b5->CreateFixture(&fd);
- shape.SetAsBox(0.1f, 1.0f, b2Vec2(-0.9f, 0.0f), 0.0f);
- b5->CreateFixture(&fd);
- shape.SetAsBox(0.1f, 1.0f, b2Vec2(0.9f, 0.0f), 0.0f);
- b5->CreateFixture(&fd);
- }
- anchor.Set(6.0f, 2.0f);
- jd.Initialize(b1, b5, anchor);
- m_world->CreateJoint(&jd);
- b2Body* b6;
- {
- b2PolygonShape shape;
- shape.SetAsBox(1.0f, 0.1f);
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(6.5f, 4.1f);
- b6 = m_world->CreateBody(&bd);
- b6->CreateFixture(&shape, 30.0f);
- }
- anchor.Set(7.5f, 4.0f);
- jd.Initialize(b5, b6, anchor);
- m_world->CreateJoint(&jd);
- b2Body* b7;
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.1f, 1.0f);
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(7.4f, 1.0f);
- b7 = m_world->CreateBody(&bd);
- b7->CreateFixture(&shape, 10.0f);
- }
- b2DistanceJointDef djd;
- djd.bodyA = b3;
- djd.bodyB = b7;
- djd.localAnchorA.Set(6.0f, 0.0f);
- djd.localAnchorB.Set(0.0f, -1.0f);
- b2Vec2 d = djd.bodyB->GetWorldPoint(djd.localAnchorB) - djd.bodyA->GetWorldPoint(djd.localAnchorA);
- djd.length = d.Length();
- m_world->CreateJoint(&djd);
- {
- float32 radius = 0.2f;
- b2CircleShape shape;
- shape.m_radius = radius;
- for (int32 i = 0; i < 4; ++i)
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(5.9f + 2.0f * radius * i, 2.4f);
- b2Body* body = m_world->CreateBody(&bd);
- body->CreateFixture(&shape, 10.0f);
- }
- }
- }
- static Test* Create()
- {
- return new Dominos;
- }
- };
- #endif