test/third_party/box2d/Testbed/Tests/ShapeEditing.h

/*
* Copyright (c) 2008-2009 Erin Catto http://www.box2d.org
*
* 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 SHAPE_EDITING_H
#define SHAPE_EDITING_H

class ShapeEditing : public Test
{
public:

	ShapeEditing()
	{
		{
			b2BodyDef bd;
			b2Body* ground = m_world->CreateBody(&bd);

			b2EdgeShape shape;
			shape.Set(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
			ground->CreateFixture(&shape, 0.0f);
		}

		b2BodyDef bd;
		bd.type = b2_dynamicBody;
		bd.position.Set(0.0f, 10.0f);
		m_body = m_world->CreateBody(&bd);

		b2PolygonShape shape;
		shape.SetAsBox(4.0f, 4.0f, b2Vec2(0.0f, 0.0f), 0.0f);
		m_fixture1 = m_body->CreateFixture(&shape, 10.0f);

		m_fixture2 = NULL;

		m_sensor = false;
	}

	void Keyboard(unsigned char key)
	{
		switch (key)
		{
		case 'c':
			if (m_fixture2 == NULL)
			{
				b2CircleShape shape;
				shape.m_radius = 3.0f;
				shape.m_p.Set(0.5f, -4.0f);
				m_fixture2 = m_body->CreateFixture(&shape, 10.0f);
				m_body->SetAwake(true);
			}
			break;

		case 'd':
			if (m_fixture2 != NULL)
			{
				m_body->DestroyFixture(m_fixture2);
				m_fixture2 = NULL;
				m_body->SetAwake(true);
			}
			break;

		case 's':
			if (m_fixture2 != NULL)
			{
				m_sensor = !m_sensor;
				m_fixture2->SetSensor(m_sensor);
			}
			break;
		}
	}

	void Step(Settings* settings)
	{
		Test::Step(settings);
		m_debugDraw.DrawString(5, m_textLine, "Press: (c) create a shape, (d) destroy a shape.");
		m_textLine += 15;
		m_debugDraw.DrawString(5, m_textLine, "sensor = %d", m_sensor);
		m_textLine += 15;
	}

	static Test* Create()
	{
		return new ShapeEditing;
	}

	b2Body* m_body;
	b2Fixture* m_fixture1;
	b2Fixture* m_fixture2;
	bool m_sensor;
};

#endif