@Override
public void create() {
{
PolygonDef sd = new PolygonDef();
sd.setAsBox(50.0f, 10.0f);
BodyDef bd = new BodyDef();
bd.position = new Vec2(0.0f, -10.0f);
m_world.createStaticBody(bd).createShape(sd);
}
{
PolygonDef sd = new PolygonDef();
float w = 4.0f;
float h = 0.25f;
sd.setAsBox(w, h);
sd.density = 1.0f;
sd.friction = 0.3f;
sd.restitution = 0.0f;
BodyDef bd = new BodyDef();
int numSlats = 8;
float lastCMX = 0.0f;
float eps = 0.14f;
for (int i = 0; i < numSlats; ++i) {
float newX = lastCMX + w - eps;
lastCMX = (i * lastCMX + newX) / (i + 1);
bd.position = new Vec2(newX, .25f + 2 * h * (numSlats - i - 1));
Body myBody = m_world.createDynamicBody(bd);
myBody.createShape(sd);
myBody.setMassFromShapes();
}
}
}
public void create() {
if (firstTime) {
setCamera(0f, 10f, 10f);
firstTime = false;
}
{
PolygonDef sd = new PolygonDef();
sd.setAsBox(50.0f, 10.0f, new Vec2(0.0f, -10.0f), 0.0f);
BodyDef bd = new BodyDef();
bd.position.set(0.0f, 0.0f);
Body ground = m_world.createStaticBody(bd);
ground.createShape(sd);
sd.setAsBox(0.1f, 10.0f, new Vec2(20.0f, 10.0f), 0.0f);
ground.createShape(sd);
}
float[] xs = {0.0f, -10.0f, -5.0f, 5.0f, 10.0f};
for (int j = 0; j < xs.length; ++j) {
PolygonDef sd = new PolygonDef();
sd.setAsBox(0.5f, 0.5f);
sd.density = 1.0f;
sd.friction = 0.3f;
for (int i = 0; i < 12; ++i) {
BodyDef bd = new BodyDef();
// For this test we are using continuous physics for all boxes.
// This is a stress test, you normally wouldn't do this for
// performance reasons.
bd.isBullet = true;
bd.allowSleep = true;
// float32 x = b2Random(-0.1f, 0.1f);
// float32 x = i % 2 == 0 ? -0.025f : 0.025f;
bd.position.set(xs[j] + parent.random(-.05f, .05f), 0.752f + 1.54f * i);
// bd.position.Set(xs[j], 2.51f + 4.02f * i);
Body body = m_world.createDynamicBody(bd);
body.createShape(sd);
body.setMassFromShapes();
}
}
}
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(0.0f, 10.0f, 20.0f);
firstTime = false;
// this.settings.drawJoints = false;
}
Body ground = null;
{
PolygonDef sd = new PolygonDef();
sd.setAsBox(50.0f, 0.4f);
BodyDef bd = new BodyDef();
bd.position.set(0.0f, 0.0f);
ground = m_world.createBody(bd);
ground.createShape(sd);
sd.setAsBox(0.4f, 50.0f, new Vec2(-10.0f, 0.0f), 0.0f);
ground.createShape(sd);
sd.setAsBox(0.4f, 50.0f, new Vec2(10.0f, 0.0f), 0.0f);
ground.createShape(sd);
}
ConstantVolumeJointDef cvjd = new ConstantVolumeJointDef();
float cx = 0.0f;
float cy = 10.0f;
float rx = 4.0f;
float ry = 4.0f;
int nBodies = 100;
float bodyRadius = 0.4f;
ArrayList<Body> bodies = new ArrayList<Body>();
for (int i = 0; i < nBodies; ++i) {
float angle = PApplet.map(i, 0, nBodies, 0, 2 * 3.1415f);
BodyDef bd = new BodyDef();
// bd.isBullet = true;
bd.fixedRotation = true;
float x =
cx
+ (1.0f + .5f * (float) Math.cos(4 * (angle + .25f * 3.1415f)))
* rx
* (float) Math.sin(angle);
float y =
cy
+ (1.0f + .5f * (float) Math.cos(4 * (angle + .25f * 3.1415f)))
* ry
* (float) Math.cos(angle);
bd.position.set(new Vec2(x, y));
Body body = m_world.createBody(bd);
CircleDef cd = new CircleDef();
cd.radius = bodyRadius;
cd.density = 1.0f;
// cd.filter.groupIndex = -2;
body.createShape(cd);
cvjd.addBody(body);
body.setMassFromShapes();
bodies.add(body);
}
cvjd.frequencyHz = 10.0f;
cvjd.dampingRatio = 10.0f;
((ConstantVolumeJoint) m_world.createJoint(cvjd)).inflate(1.5f);
cvjd = new ConstantVolumeJointDef();
for (int i = 0; i < nBodies / 4; ++i) {
cvjd.addBody(bodies.get(i));
}
cvjd.frequencyHz = 10.0f;
cvjd.dampingRatio = 10.0f;
((ConstantVolumeJoint) m_world.createJoint(cvjd)).inflate(1.5f);
cvjd = new ConstantVolumeJointDef();
for (int i = nBodies / 4; i < nBodies / 2; ++i) {
cvjd.addBody(bodies.get(i));
}
cvjd.frequencyHz = 10.0f;
cvjd.dampingRatio = 10.0f;
((ConstantVolumeJoint) m_world.createJoint(cvjd)).inflate(1.5f);
cvjd = new ConstantVolumeJointDef();
for (int i = nBodies / 2; i < 3 * nBodies / 4; ++i) {
cvjd.addBody(bodies.get(i));
}
cvjd.frequencyHz = 10.0f;
cvjd.dampingRatio = 10.0f;
((ConstantVolumeJoint) m_world.createJoint(cvjd)).inflate(1.5f);
cvjd = new ConstantVolumeJointDef();
for (int i = 3 * nBodies / 4; i < nBodies; ++i) {
cvjd.addBody(bodies.get(i));
}
cvjd.frequencyHz = 10.0f;
cvjd.dampingRatio = 10.0f;
((ConstantVolumeJoint) m_world.createJoint(cvjd)).inflate(1.5f);
// cvjd = new ConstantVolumeJointDef();
// for (int i=0+nBodies/8; i<nBodies/4+nBodies/8; ++i) {
// cvjd.addBody(bodies.get(i));
// }
// cvjd.frequencyHz = 10.0f;
// cvjd.dampingRatio = 10.0f;
// m_world.createJoint(cvjd);
//
// cvjd = new ConstantVolumeJointDef();
// for (int i=nBodies/4+nBodies/8; i<nBodies/2+nBodies/8; ++i) {
// cvjd.addBody(bodies.get(i));
// }
// cvjd.frequencyHz = 10.0f;
// cvjd.dampingRatio = 10.0f;
// m_world.createJoint(cvjd);
//
// cvjd = new ConstantVolumeJointDef();
// for (int i=nBodies/2+nBodies/8; i<3*nBodies/4+nBodies/8; ++i) {
// cvjd.addBody(bodies.get(i));
// }
// cvjd.frequencyHz = 10.0f;
// cvjd.dampingRatio = 10.0f;
// m_world.createJoint(cvjd);
// cvjd = new ConstantVolumeJointDef();
// for (int i=3*nBodies/4+nBodies/8; i<nBodies+nBodies/8; ++i) {
// int index = i;
// if (index >= bodies.size()) index -= bodies.size();
// cvjd.addBody(bodies.get(index));
// }
//
// cvjd.frequencyHz = 10.0f;
// cvjd.dampingRatio = 10.0f;
// m_world.createJoint(cvjd);
// cvjd = new ConstantVolumeJointDef();
// cvjd.addBody(bodies.get(0));
// cvjd.addBody(bodies.get(nBodies/4));
// cvjd.addBody(bodies.get(nBodies/2));
// cvjd.addBody(bodies.get(3*nBodies/4));
// cvjd.frequencyHz = 10.0f;
// m_world.createJoint(cvjd);
//
// cvjd = new ConstantVolumeJointDef();
// cvjd.addBody(bodies.get(0 + nBodies/8));
// cvjd.addBody(bodies.get(nBodies/4 + nBodies/8));
// cvjd.addBody(bodies.get(nBodies/2 + nBodies/8));
// cvjd.addBody(bodies.get(3*nBodies/4 + nBodies/8));
// cvjd.frequencyHz = 1.0f;
// m_world.createJoint(cvjd);
BodyDef bd2 = new BodyDef();
PolygonDef psd = new PolygonDef();
psd.setAsBox(3.0f, 1.5f, new Vec2(cx, cy + 15.0f), 0.0f);
psd.density = 1.0f;
bd2.position = new Vec2(cx, cy + 15.0f);
Body fallingBox = m_world.createBody(bd2);
fallingBox.createShape(psd);
fallingBox.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();
}
