/** @see Shape#computeMass(MassData) */
@Override
public void computeMass(final MassData massData) {
massData.mass = 0;
massData.center.set(m_v1);
// inertia about the local origin
massData.I = 0;
}
private void checkBounds() {
for (int i = 0; i < liquid.length; ++i) {
if (liquid[i].getMemberWorldCenter().y < -10.0f) {
m_world.destroyBody(liquid[i]);
float massPerParticle = totalMass / nParticles;
CircleDef pd = new CircleDef();
pd.density = 1.0f;
pd.filter.groupIndex = -10;
pd.radius = .05f;
pd.restitution = 0.4f;
pd.friction = 0.0f;
float cx = 0.0f + parent.random(-0.6f, 0.6f);
float cy = 15.0f + parent.random(-2.3f, 2.0f);
BodyDef bd = new BodyDef();
bd.position = new Vec2(cx, cy);
bd.fixedRotation = true;
Body b = m_world.createBody(bd);
b.createShape(pd).setUserData(LIQUID_INT);
MassData md = new MassData();
md.mass = massPerParticle;
md.I = 1.0f;
b.setMass(md);
b.allowSleeping(false);
liquid[i] = b;
}
}
if (bod.getMemberWorldCenter().y < -15.0f) {
m_world.destroyBody(bod);
PolygonDef polyDef = new PolygonDef();
polyDef.setAsBox(parent.random(0.3f, 0.7f), parent.random(0.3f, 0.7f));
polyDef.density = 1.0f;
BodyDef bodyDef = new BodyDef();
bodyDef.position = new Vec2(0.0f, 25.0f);
bod = m_world.createBody(bodyDef);
bod.createShape(polyDef);
bod.setMassFromShapes();
}
}
@Override
public void create() {
if (firstTime) {
setCamera(0f, 2f, 35f);
firstTime = false;
}
// m_world.setGravity(new Vec2(0.0f,0.0f));
Body ground = null;
{
PolygonDef sd = new PolygonDef();
sd.setAsBox(5.0f, 0.5f);
BodyDef bd = new BodyDef();
bd.position.set(0.0f, 0.0f);
ground = m_world.createBody(bd);
ground.createShape(sd);
sd.setAsBox(1.0f, 0.2f, new Vec2(0.0f, 4.0f), -0.2f);
ground.createShape(sd);
sd.setAsBox(1.5f, 0.2f, new Vec2(-1.2f, 5.2f), -1.5f);
ground.createShape(sd);
sd.setAsBox(0.5f, 50.0f, new Vec2(5.0f, 0.0f), 0.0f);
ground.createShape(sd);
sd.setAsBox(0.5f, 3.0f, new Vec2(-8.0f, 0.0f), 0.0f);
ground.createShape(sd);
sd.setAsBox(2.0f, 0.1f, new Vec2(-6.0f, -2.8f), 0.1f);
ground.createShape(sd);
CircleDef cd = new CircleDef();
cd.radius = 0.5f;
cd.localPosition.set(-0.5f, -4.0f);
ground.createShape(cd);
}
liquid = new Body[nParticles];
float massPerParticle = totalMass / nParticles;
// PointDef pd = new PointDef();
// pd.mass = massPerParticle;
// pd.restitution = 0.0f;
// pd.filter.groupIndex = -10;
CircleDef pd = new CircleDef();
pd.density = 1.0f;
pd.filter.groupIndex = -10;
pd.radius = .05f;
pd.restitution = 0.4f;
pd.friction = 0.0f;
float cx = 0.0f;
float cy = 25.0f;
for (int i = 0; i < nParticles; ++i) {
BodyDef bd = new BodyDef();
bd.position =
new Vec2(
parent.random(cx - boxWidth * .5f, cx + boxWidth * .5f),
parent.random(cy - boxHeight * .5f, cy + boxHeight * .5f));
bd.fixedRotation = true;
Body b = m_world.createBody(bd);
b.createShape(pd).setUserData(LIQUID_INT);
MassData md = new MassData();
md.mass = massPerParticle;
md.I = 1.0f;
b.setMass(md);
b.allowSleeping(false);
liquid[i] = b;
}
PolygonDef polyDef = new PolygonDef();
polyDef.setAsBox(parent.random(0.3f, 0.7f), parent.random(0.3f, 0.7f));
polyDef.density = 1.0f;
BodyDef bodyDef = new BodyDef();
bodyDef.position = new Vec2(0.0f, 25.0f);
bod = m_world.createBody(bodyDef);
bod.createShape(polyDef);
bod.setMassFromShapes();
}
