/* (non-Javadoc)
* @see org.dyn4j.samples.SimulationFrame#initializeWorld()
*/
@Override
protected void initializeWorld() {
// no gravity on a top-down view of a billiards game
this.world.setGravity(World.ZERO_GRAVITY);
// create all your bodies/joints
SimulationBody wallr = new SimulationBody();
wallr.addFixture(Geometry.createRectangle(0.2, 10));
wallr.translate(2, 0);
wallr.setMass(MassType.INFINITE);
world.addBody(wallr);
SimulationBody ball1 = new SimulationBody();
ball1.addFixture(
Geometry.createCircle(0.028575), // 2.25 in diameter = 0.028575 m radius
217.97925, // 0.126 oz/in^3 = 217.97925 kg/m^3
0.08,
0.9);
ball1.translate(-1.0, 0.0);
// ball1.setLinearVelocity(5.36448, 0.0); // 12 mph = 5.36448 m/s
ball1.setLinearVelocity(2, 0); // so we can see the bouncing
ball1.setMass(MassType.NORMAL);
this.world.addBody(ball1);
SimulationBody ball2 = new SimulationBody();
ball2.addFixture(Geometry.createCircle(0.028575), 217.97925, 0.08, 0.9);
ball2.translate(1.0, 0.0);
ball2.setMass(MassType.NORMAL);
this.world.addBody(ball2);
}
/**
* Creates game objects and adds them to the world.
*
* <p>Basically the same shapes from the Shapes test in the TestBed.
*/
protected void initializeWorld() {
// create the world
this.world = new World();
// create all your bodies/joints
// create the floor
Rectangle floorRect = new Rectangle(15.0, 1.0);
GameObject floor = new GameObject();
floor.addFixture(new BodyFixture(floorRect));
floor.setMass(MassType.INFINITE);
// move the floor down a bit
floor.translate(0.0, -4.0);
this.world.addBody(floor);
// create a triangle object
Triangle triShape =
new Triangle(new Vector2(0.0, 0.5), new Vector2(-0.5, -0.5), new Vector2(0.5, -0.5));
GameObject triangle = new GameObject();
triangle.addFixture(triShape);
triangle.setMass(MassType.NORMAL);
triangle.translate(-1.0, 2.0);
// test having a velocity
triangle.getLinearVelocity().set(5.0, 0.0);
this.world.addBody(triangle);
// try a rectangle
Rectangle rectShape = new Rectangle(1.0, 1.0);
GameObject rectangle = new GameObject();
rectangle.addFixture(rectShape);
rectangle.setMass(MassType.NORMAL);
rectangle.translate(0.0, 2.0);
rectangle.getLinearVelocity().set(-5.0, 0.0);
this.world.addBody(rectangle);
// try a polygon with lots of vertices
Polygon polyShape = Geometry.createUnitCirclePolygon(10, 1.0);
GameObject polygon = new GameObject();
polygon.addFixture(polyShape);
polygon.setMass(MassType.NORMAL);
polygon.translate(-2.5, 2.0);
// set the angular velocity
polygon.setAngularVelocity(Math.toRadians(-20.0));
this.world.addBody(polygon);
GameObject issTri = new GameObject();
issTri.addFixture(Geometry.createIsoscelesTriangle(1.0, 3.0));
issTri.setMass(MassType.NORMAL);
issTri.translate(2.0, 3.0);
this.world.addBody(issTri);
GameObject equTri = new GameObject();
equTri.addFixture(Geometry.createEquilateralTriangle(2.0));
equTri.setMass(MassType.NORMAL);
equTri.translate(3.0, 3.0);
this.world.addBody(equTri);
GameObject rightTri = new GameObject();
rightTri.addFixture(Geometry.createRightTriangle(2.0, 1.0));
rightTri.setMass(MassType.NORMAL);
rightTri.translate(4.0, 3.0);
this.world.addBody(rightTri);
}