bounce/examples/testbed/tests/hinge_chain.h

88 lines
2.0 KiB
C++

/*
* Copyright (c) 2016-2019 Irlan Robson https://irlanrobson.github.io
*
* 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 HINGE_CHAIN_H
#define HINGE_CHAIN_H
class HingeChain : public Test
{
public:
HingeChain()
{
static b3BoxHull box(2.0f, 4.0f, 0.5f);
scalar x = -50.0f;
scalar y = 0.0f;
b3Body* lastHinge;
{
b3BodyDef bd;
bd.position.Set(x, y, 0.0f);
lastHinge = m_world.CreateBody(bd);
b3HullShape hull;
hull.m_hull = &box;
b3ShapeDef sdef;
sdef.shape = &hull;
lastHinge->CreateShape(sdef);
}
x += 4.25f;
for (u32 i = 0; i < 20; ++i)
{
b3BodyDef bd;
bd.type = e_dynamicBody;
bd.position.Set(x, y, 0.0f);
b3Body* hinge = m_world.CreateBody(bd);
b3HullShape hull;
hull.m_hull = &box;
b3ShapeDef sdef;
sdef.shape = &hull;
sdef.density = 1.0f;
hinge->CreateShape(sdef);
{
b3Vec3 hingeAxis(0.0f, 1.0f, 0.0f);
b3Vec3 hingeAnchor(x - 2.25f, y, 0.0f);
b3RevoluteJointDef jd;
jd.Initialize(lastHinge, hinge, hingeAxis, hingeAnchor, 0.0f, 0.5f * B3_PI);
jd.collideLinked = false;
b3RevoluteJoint* rj = (b3RevoluteJoint*)m_world.CreateJoint(jd);
}
x += 4.25f;
lastHinge = hinge;
}
}
static Test* Create()
{
return new HingeChain();
}
};
#endif