VerticalStack.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 VERTICAL_STACK_H
- #define VERTICAL_STACK_H
- class VerticalStack : public Test
- {
- public:
- enum
- {
- e_columnCount = 5,
- e_rowCount = 16
- //e_columnCount = 1,
- //e_rowCount = 1
- };
- VerticalStack()
- {
- {
- 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);
- shape.SetAsEdge(b2Vec2(20.0f, 0.0f), b2Vec2(20.0f, 20.0f));
- ground->CreateFixture(&shape, 0.0f);
- }
- float32 xs[5] = {0.0f, -10.0f, -5.0f, 5.0f, 10.0f};
- for (int32 j = 0; j < e_columnCount; ++j)
- {
- b2PolygonShape shape;
- shape.SetAsBox(0.5f, 0.5f);
- b2FixtureDef fd;
- fd.shape = &shape;
- fd.density = 1.0f;
- fd.friction = 0.3f;
- for (int i = 0; i < e_rowCount; ++i)
- {
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- int32 n = j * e_rowCount + i;
- b2Assert(n < e_rowCount * e_columnCount);
- m_indices[n] = n;
- bd.userData = m_indices + n;
- float32 x = 0.0f;
- //float32 x = RandomFloat(-0.02f, 0.02f);
- //float32 x = i % 2 == 0 ? -0.025f : 0.025f;
- bd.position.Set(xs[j] + x, 0.752f + 1.54f * i);
- b2Body* body = m_world->CreateBody(&bd);
- m_bodies[n] = body;
- body->CreateFixture(&fd);
- }
- }
- m_bullet = NULL;
- }
- void Keyboard(unsigned char key)
- {
- switch (key)
- {
- case ',':
- if (m_bullet != NULL)
- {
- m_world->DestroyBody(m_bullet);
- m_bullet = NULL;
- }
- {
- b2CircleShape shape;
- shape.m_radius = 0.25f;
- b2FixtureDef fd;
- fd.shape = &shape;
- fd.density = 20.0f;
- fd.restitution = 0.05f;
- b2BodyDef bd;
- bd.type = b2_dynamicBody;
- bd.bullet = true;
- bd.position.Set(-31.0f, 5.0f);
- m_bullet = m_world->CreateBody(&bd);
- m_bullet->CreateFixture(&fd);
- m_bullet->SetLinearVelocity(b2Vec2(400.0f, 0.0f));
- }
- break;
- }
- }
- void Step(Settings* settings)
- {
- Test::Step(settings);
- m_debugDraw.DrawString(5, m_textLine, "Press: (,) to launch a bullet.");
- m_textLine += 15;
- //if (m_stepCount == 300)
- //{
- // if (m_bullet != NULL)
- // {
- // m_world->DestroyBody(m_bullet);
- // m_bullet = NULL;
- // }
- // {
- // b2CircleShape shape;
- // shape.m_radius = 0.25f;
- // b2FixtureDef fd;
- // fd.shape = &shape;
- // fd.density = 20.0f;
- // fd.restitution = 0.05f;
- // b2BodyDef bd;
- // bd.type = b2_dynamicBody;
- // bd.bullet = true;
- // bd.position.Set(-31.0f, 5.0f);
- // m_bullet = m_world->CreateBody(&bd);
- // m_bullet->CreateFixture(&fd);
- // m_bullet->SetLinearVelocity(b2Vec2(400.0f, 0.0f));
- // }
- //}
- }
- static Test* Create()
- {
- return new VerticalStack;
- }
- b2Body* m_bullet;
- b2Body* m_bodies[e_rowCount * e_columnCount];
- int32 m_indices[e_rowCount * e_columnCount];
- };
- #endif