package org.jbox2d.testbed.tests;
import org.jbox2d.collision.shapes.PolygonShape;
import org.jbox2d.common.MathUtils;
import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;
import org.jbox2d.dynamics.BodyDef;
import org.jbox2d.dynamics.BodyType;
import org.jbox2d.dynamics.joints.RevoluteJoint;
import org.jbox2d.dynamics.joints.RevoluteJointDef;
import org.jbox2d.testbed.framework.TestbedSettings;
import org.jbox2d.testbed.framework.TestbedTest;
public class Tumbler extends TestbedTest {
private static final int MAX_NUM = 800;
RevoluteJoint m_joint;
int m_count;
@Override
public void initTest(boolean deserialized) {
{
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.allowSleep = false;
bd.position.set(0.0f, 10.0f);
Body body = m_world.createBody(bd);
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.5f, 10.0f, new Vec2(10.0f, 0.0f), 0.0f);
body.createFixture(shape, 5.0f);
shape.setAsBox(0.5f, 10.0f, new Vec2(-10.0f, 0.0f), 0.0f);
body.createFixture(shape, 5.0f);
shape.setAsBox(10.0f, 0.5f, new Vec2(0.0f, 10.0f), 0.0f);
body.createFixture(shape, 5.0f);
shape.setAsBox(10.0f, 0.5f, new Vec2(0.0f, -10.0f), 0.0f);
body.createFixture(shape, 5.0f);
RevoluteJointDef jd = new RevoluteJointDef();
jd.bodyA = getGroundBody();
jd.bodyB = body;
jd.localAnchorA.set(0.0f, 10.0f);
jd.localAnchorB.set(0.0f, 0.0f);
jd.referenceAngle = 0.0f;
jd.motorSpeed = 0.05f * MathUtils.PI;
jd.maxMotorTorque = 1e8f;
jd.enableMotor = true;
m_joint = (RevoluteJoint) m_world.createJoint(jd);
}
m_count = 0;
}
@Override
public synchronized void step(TestbedSettings settings) {
super.step(settings);
if (m_count < MAX_NUM) {
BodyDef bd = new BodyDef();
bd.type = BodyType.DYNAMIC;
bd.position.set(0.0f, 10.0f);
Body body = m_world.createBody(bd);
PolygonShape shape = new PolygonShape();
shape.setAsBox(0.125f, 0.125f);
body.createFixture(shape, 1.0f);
++m_count;
}
}
@Override
public String getTestName() {
return "Tumbler";
}
}