背景和头像缺失

cocos2d/tests/cpp-tests/Classes/Box2DTestBed/Tests/Mobile.h

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+/*
+* Copyright (c) 2006-2009 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 MOBILE_H
+#define MOBILE_H
+
+class Mobile : public Test
+{
+public:
+
+	enum
+	{
+		e_depth = 4
+	};
+
+	Mobile()
+	{
+		b2Body* ground;
+
+		// Create ground body.
+		{
+			b2BodyDef bodyDef;
+			bodyDef.position.Set(0.0f, 5.0f);
+			ground = m_world->CreateBody(&bodyDef);
+		}
+
+		float32 a = 0.5f;
+		b2Vec2 h(0.0f, a);
+
+		b2Body* root = AddNode(ground, b2Vec2_zero, 0, 3.0f, a);
+
+		b2RevoluteJointDef jointDef;
+		jointDef.bodyA = ground;
+		jointDef.bodyB = root;
+		jointDef.localAnchorA.SetZero();
+		jointDef.localAnchorB = h;
+		m_world->CreateJoint(&jointDef);
+	}
+
+	b2Body* AddNode(b2Body* parent, const b2Vec2& localAnchor, int32 depth, float32 offset, float32 a)
+	{
+		float32 density = 20.0f;
+		b2Vec2 h(0.0f, a);
+
+		b2Vec2 p = parent->GetPosition() + localAnchor - h;
+
+		b2BodyDef bodyDef;
+		bodyDef.type = b2_dynamicBody;
+		bodyDef.position = p;
+		b2Body* body = m_world->CreateBody(&bodyDef);
+
+		b2PolygonShape shape;
+		shape.SetAsBox(0.25f * a, a);
+		body->CreateFixture(&shape, density);
+
+		if (depth == e_depth)
+		{
+			return body;
+		}
+
+		b2Vec2 a1 = b2Vec2(offset, -a);
+		b2Vec2 a2 = b2Vec2(-offset, -a);
+		b2Body* body1 = AddNode(body, a1, depth + 1, 0.5f * offset, a);
+		b2Body* body2 = AddNode(body, a2, depth + 1, 0.5f * offset, a);
+
+		b2RevoluteJointDef jointDef;
+		jointDef.bodyA = body;
+		jointDef.localAnchorB = h;
+
+		jointDef.localAnchorA = a1;
+		jointDef.bodyB = body1;
+		m_world->CreateJoint(&jointDef);
+
+		jointDef.localAnchorA = a2;
+		jointDef.bodyB = body2;
+		m_world->CreateJoint(&jointDef);
+
+		return body;
+	}
+
+	static Test* Create()
+	{
+		return new Mobile;
+	}
+};
+
+#endif