SphereStack.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 SPHERE_STACK_H
- #define SPHERE_STACK_H
- class SphereStack : public Test
- {
- public:
- enum
- {
- e_count = 10
- };
- SphereStack()
- {
- {
- 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);
- }
- {
- b2CircleShape shape;
- shape.m_radius = 1.0f;
- for (int32 i = 0; i < e_count; ++i)
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.position.Set(0.0, 4.0f + 3.0f * i);
- m_bodies[i] = m_world->CreateBody(&bd);
- m_bodies[i]->CreateFixture(&shape, 1.0f);
- //m_bodies[i]->SetLinearVelocity(b2Vec2(0.0f, -100.0f));
- }
- }
- }
- void Step(Settings* settings)
- {
- Test::Step(settings);
- //for (int32 i = 0; i < e_count; ++i)
- //{
- // printf("%g ", m_bodies[i]->GetWorldCenter().y);
- //}
- //for (int32 i = 0; i < e_count; ++i)
- //{
- // printf("%g ", m_bodies[i]->GetLinearVelocity().y);
- //}
- //printf("n");
- }
- static Test* Create()
- {
- return new SphereStack;
- }
- b2Body* m_bodies[e_count];
- };
- #endif