LiquidTimer.java

package org.jbox2d.testbed.tests;

import org.jbox2d.collision.shapes.ChainShape;
import org.jbox2d.collision.shapes.EdgeShape;
import org.jbox2d.collision.shapes.PolygonShape;
import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.Body;
import org.jbox2d.dynamics.BodyDef;
import org.jbox2d.particle.ParticleGroupDef;
import org.jbox2d.particle.ParticleType;
import org.jbox2d.testbed.framework.TestbedTest;

public class LiquidTimer extends TestbedTest {

  @Override
  public void initTest(boolean deserialized) {
    {
      BodyDef bd = new BodyDef();
      Body ground = m_world.createBody(bd);

      ChainShape shape = new ChainShape();
      final Vec2[] vertices =
          new Vec2[] {new Vec2(-20, 0), new Vec2(20, 0), new Vec2(20, 40), new Vec2(-20, 40)};
      shape.createLoop(vertices, 4);
      ground.createFixture(shape, 0.0f);

    }

    m_world.setParticleRadius(0.15f);
    {
      PolygonShape shape = new PolygonShape();
      shape.setAsBox(20, 4, new Vec2(0, 36), 0);
      ParticleGroupDef pd = new ParticleGroupDef();
      pd.flags = ParticleType.b2_tensileParticle | ParticleType.b2_viscousParticle;
      pd.shape = shape;
      m_world.createParticleGroup(pd);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-20, 32), new Vec2(-12, 32));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-11, 32), new Vec2(20, 32));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-12, 32), new Vec2(-12, 28));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-11, 32), new Vec2(-11, 28));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-16, 24), new Vec2(8, 20));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(16, 16), new Vec2(-8, 12));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-12, 8), new Vec2(-12, 0));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(-4, 8), new Vec2(-4, 0));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(4, 8), new Vec2(4, 0));
      body.createFixture(shape, 0.1f);
    }

    {
      BodyDef bd = new BodyDef();
      Body body = m_world.createBody(bd);
      EdgeShape shape = new EdgeShape();
      shape.set(new Vec2(12, 8), new Vec2(12, 0));
      body.createFixture(shape, 0.1f);
    }
  }

  @Override
  public String getTestName() {
    return "Liquid Timer";
  }
}