VaryingFriction.h
上传用户:gb3593
上传日期:2022-01-07
资源大小:3028k
文件大小:3k
- /*
- * 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 VARYING_FRICTION_H
- #define VARYING_FRICTION_H
- class VaryingFriction : public Test
- {
- public:
- VaryingFriction()
- {
- {
- b2BodyDef bd;
- b2Body* ground = m_world->CreateBody(&bd);
- b2PolygonShape shape;
- shape.SetAsEdge(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(13.0f, 0.25f);
- b2BodyDef bd;
- bd.position.Set(-4.0f, 22.0f);
- bd.angle = -0.25f;
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.25f, 1.0f);
- b2BodyDef bd;
- bd.position.Set(10.5f, 19.0f);
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(13.0f, 0.25f);
- b2BodyDef bd;
- bd.position.Set(4.0f, 14.0f);
- bd.angle = 0.25f;
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.25f, 1.0f);
- b2BodyDef bd;
- bd.position.Set(-10.5f, 11.0f);
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(13.0f, 0.25f);
- b2BodyDef bd;
- bd.position.Set(-4.0f, 6.0f);
- bd.angle = -0.25f;
- b2Body* ground = m_world->CreateBody(&bd);
- ground->CreateFixture(&shape, 0.0f);
- }
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.5f, 0.5f);
- b2FixtureDef fd;
- fd.shape = &shape;
- fd.density = 25.0f;
- float friction[5] = {0.75f, 0.5f, 0.35f, 0.1f, 0.0f};
- for (int i = 0; i < 5; ++i)
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(-15.0f + 4.0f * i, 28.0f);
- b2Body* body = m_world->CreateBody(&bd);
- fd.friction = friction[i];
- body->CreateFixture(&fd);
- }
- }
- }
- static Test* Create()
- {
- return new VaryingFriction;
- }
- };
- #endif