Added Box2D

external/Box2D-2.3.1/Contributions/Tests/Car.h

@@ -0,0 +1,215 @@
+/*
+* Copyright (c) 2008-2009 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 CAR_H
+#define CAR_H
+
+// Adapted from SpiritWalkers by darkzerox
+class Car : public Test
+{
+public:
+	Car()
+	{
+		{	// car body
+			b2PolygonDef poly1, poly2;
+
+			// bottom half
+			poly1.vertexCount = 5;
+			poly1.vertices[4].Set(-2.2f,-0.74f);
+			poly1.vertices[3].Set(-2.2f,0);
+			poly1.vertices[2].Set(1.0f,0);
+			poly1.vertices[1].Set(2.2f,-0.2f);
+			poly1.vertices[0].Set(2.2f,-0.74f);
+			poly1.filter.groupIndex = -1;
+
+			poly1.density		= 20.0f;
+			poly1.friction		= 0.68f;
+			poly1.filter.groupIndex	= -1;
+
+			// top half
+			poly2.vertexCount = 4;
+			poly2.vertices[3].Set(-1.7f,0);
+			poly2.vertices[2].Set(-1.3f,0.7f);
+			poly2.vertices[1].Set(0.5f,0.74f);
+			poly2.vertices[0].Set(1.0f,0);
+			poly2.filter.groupIndex = -1;
+
+			poly2.density		= 5.0f;
+			poly2.friction		= 0.68f;
+			poly2.filter.groupIndex	= -1;
+
+			b2BodyDef bd;
+			bd.position.Set(-35.0f, 2.8f);
+
+			m_vehicle = m_world->CreateBody(&bd);
+			m_vehicle->CreateFixture(&poly1);
+			m_vehicle->CreateFixture(&poly2);
+			m_vehicle->SetMassFromShapes();
+		}
+
+		{	// vehicle wheels
+			b2CircleDef	circ;
+			circ.density = 40.0f;
+			circ.radius = 0.38608f;
+			circ.friction = 0.8f;
+			circ.filter.groupIndex = -1;
+
+			b2BodyDef bd;
+			bd.allowSleep = false;
+			bd.position.Set(-33.8f, 2.0f);
+
+			m_rightWheel = m_world->CreateBody(&bd);
+			m_rightWheel->CreateFixture(&circ);
+			m_rightWheel->SetMassFromShapes();
+
+			bd.position.Set(-36.2f, 2.0f);
+			m_leftWheel = m_world->CreateBody(&bd);
+			m_leftWheel->CreateFixture(&circ);
+			m_leftWheel->SetMassFromShapes();
+		}
+
+		{	// join wheels to chassis
+			b2Vec2 anchor;
+			b2RevoluteJointDef jd;
+			jd.Initialize(m_vehicle, m_leftWheel, m_leftWheel->GetWorldCenter());
+			jd.collideConnected = false;
+			jd.enableMotor = true;
+			jd.maxMotorTorque = 10.0f;
+			jd.motorSpeed = 0.0f;
+			m_leftJoint = (b2RevoluteJoint*)m_world->CreateJoint(&jd);
+
+			jd.Initialize(m_vehicle, m_rightWheel, m_rightWheel->GetWorldCenter());
+			jd.collideConnected = false;
+			m_rightJoint = (b2RevoluteJoint*)m_world->CreateJoint(&jd);
+		}
+
+		{	// ground
+			b2PolygonDef box;
+			box.SetAsBox(19.5f, 0.5f);
+			box.friction = 0.62f;
+
+			b2BodyDef bd;
+			bd.position.Set(-25.0f, 1.0f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+
+		{	// more ground
+			b2PolygonDef box;
+			b2BodyDef bd;
+
+			box.SetAsBox(9.5f, 0.5f, b2Vec2_zero, 0.1f * b2_pi);
+			box.friction = 0.62f;
+			bd.position.Set(27.0f - 30.0f, 3.1f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+
+		{	// more ground
+			b2PolygonDef box;
+			b2BodyDef bd;
+
+			box.SetAsBox(9.5f, 0.5f, b2Vec2_zero, -0.1f * b2_pi);
+			box.friction = 0.62f;
+			bd.position.Set(55.0f - 30.0f, 3.1f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+
+		{	// more ground
+			b2PolygonDef box;
+			b2BodyDef bd;
+
+			box.SetAsBox(9.5f, 0.5f, b2Vec2_zero, 0.03f * b2_pi);
+			box.friction = 0.62f;
+			bd.position.Set(41.0f, 2.0f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+
+		{	// more ground
+			b2PolygonDef box;
+			b2BodyDef bd;
+
+			box.SetAsBox(5.0f, 0.5f, b2Vec2_zero, 0.15f * b2_pi);
+			box.friction = 0.62f;
+			bd.position.Set(50.0f, 4.0f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+
+		{	// more ground
+			b2PolygonDef box;
+			b2BodyDef bd;
+
+			box.SetAsBox(20.0f, 0.5f);
+			box.friction = 0.62f;
+			bd.position.Set(85.0f, 2.0f);
+
+			b2Body* ground = m_world->CreateBody(&bd);
+			ground->CreateFixture(&box);
+		}
+	}
+
+	void Step(Settings* settings)
+	{
+		m_debugDraw.DrawString(5, m_textLine, "Keys: left = a, brake = s, right = d");
+		m_textLine += 15;
+
+		Test::Step(settings);
+	}
+
+	void Keyboard(unsigned char key)
+	{
+		switch (key)
+		{
+		case 'a':
+			m_leftJoint->SetMaxMotorTorque(800.0f);
+			m_leftJoint->SetMotorSpeed(12.0f);
+			break;
+
+		case 's':
+			m_leftJoint->SetMaxMotorTorque(100.0f);
+			m_leftJoint->SetMotorSpeed(0.0f);
+			break;
+
+		case 'd':
+			m_leftJoint->SetMaxMotorTorque(1200.0f);
+			m_leftJoint->SetMotorSpeed(-36.0f);
+			break;
+		}
+	}
+
+	static Test* Create()
+	{
+		return new Car;
+	}
+
+	b2Body* m_leftWheel;
+	b2Body* m_rightWheel;
+	b2Body* m_vehicle;
+	b2RevoluteJoint* m_leftJoint;
+	b2RevoluteJoint* m_rightJoint;
+};
+
+#endif