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								examples/testbed/tests/newton_cradle.h
									
									
									
									
									
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								examples/testbed/tests/newton_cradle.h
									
									
									
									
									
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							| @@ -0,0 +1,124 @@ | ||||
| /* | ||||
| * Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net | ||||
| * | ||||
| * 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 NEWTON_CRADLE_H | ||||
| #define NEWTON_CRADLE_H | ||||
|  | ||||
| class NewtonCradle : public Test | ||||
| { | ||||
| public: | ||||
| 	NewtonCradle() | ||||
| 	{ | ||||
| 		{ | ||||
| 			b3BodyDef bd; | ||||
| 			b3Body* ground = m_world.CreateBody(bd); | ||||
|  | ||||
| 			b3HullShape hs; | ||||
| 			hs.m_hull = &m_groundHull; | ||||
|  | ||||
| 			b3ShapeDef sd; | ||||
| 			sd.shape = &hs; | ||||
| 			 | ||||
| 			ground->CreateShape(sd); | ||||
| 		} | ||||
|  | ||||
| 		b3CapsuleShape edge; | ||||
| 		edge.m_centers[0].Set(0.0f, -10.0f, 0.0f); | ||||
| 		edge.m_centers[1].Set(0.0f, 10.0f, 0.0f); | ||||
| 		edge.m_radius = 0.5f; | ||||
|  | ||||
| 		b3Body* frame1, *frame2; | ||||
|  | ||||
| 		{ | ||||
| 			b3BodyDef bd; | ||||
| 			bd.orientation = b3Quat(b3Vec3(0.0f, 0.0f, 1.0f), 0.5f * B3_PI); | ||||
| 			bd.position.Set(0.0f, 10.0f, -5.0f); | ||||
|  | ||||
| 			frame1 = m_world.CreateBody(bd); | ||||
|  | ||||
| 			b3ShapeDef sd; | ||||
| 			sd.shape = &edge; | ||||
|  | ||||
| 			frame1->CreateShape(sd); | ||||
| 		} | ||||
|  | ||||
| 		{ | ||||
| 			b3BodyDef bd; | ||||
| 			bd.orientation = b3Quat(b3Vec3(0.0f, 0.0f, 1.0f), 0.5f * B3_PI); | ||||
| 			bd.position.Set(0.0f, 10.0f, 5.0f); | ||||
|  | ||||
| 			frame2 = m_world.CreateBody(bd); | ||||
|  | ||||
| 			b3ShapeDef sd; | ||||
| 			sd.shape = &edge; | ||||
|  | ||||
| 			frame2->CreateShape(sd); | ||||
| 		} | ||||
|  | ||||
| 		b3Vec3 center; | ||||
| 		center.Set(-5.0f, 4.0f, 0.0f); | ||||
|  | ||||
| 		b3SphereShape vertex; | ||||
| 		vertex.m_center.SetZero(); | ||||
| 		vertex.m_radius = 1.0f; | ||||
|  | ||||
| 		u32 count = 6; | ||||
| 		for (u32 i = 0; i < count; ++i) | ||||
| 		{ | ||||
| 			b3BodyDef bd; | ||||
| 			bd.type = e_dynamicBody; | ||||
| 			bd.position = center; | ||||
| 			if (i == count - 1) | ||||
| 			{ | ||||
| 				bd.linearVelocity.x = 5.0f; | ||||
| 			} | ||||
|  | ||||
| 			b3Body* ball = m_world.CreateBody(bd); | ||||
|  | ||||
| 			b3ShapeDef sd; | ||||
| 			sd.shape = &vertex; | ||||
| 			sd.density = 1.0f; | ||||
| 			sd.friction = 0.8f; | ||||
| 			 | ||||
| 			ball->CreateShape(sd); | ||||
| 			 | ||||
| 			b3Vec3 c1; | ||||
| 			c1.x = center.x; | ||||
| 			c1.y = 10.0f; | ||||
| 			c1.z = 0.0f; | ||||
|  | ||||
| 			b3SphereJointDef jd1; | ||||
| 			jd1.bodyA = frame1; | ||||
| 			jd1.collideLinked = true; | ||||
| 			jd1.bodyB = ball; | ||||
| 			jd1.localAnchorA = b3MulT(frame1->GetTransform(), c1); | ||||
| 			jd1.localAnchorB = b3MulT(ball->GetTransform(), c1); | ||||
| 			 | ||||
| 			m_world.CreateJoint(jd1); | ||||
|  | ||||
| 			center.x += 2.0f * vertex.m_radius; | ||||
| 		} | ||||
| 	} | ||||
|  | ||||
| 	static Test* Create() | ||||
| 	{ | ||||
| 		return new NewtonCradle(); | ||||
| 	} | ||||
| }; | ||||
|  | ||||
| #endif | ||||
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