com.badlogic.gdx.physics.box2d.EdgeShape java code examples

private Body createEdge (BodyType type, float x1, float y1, float x2, float y2, float density) {
  BodyDef def = new BodyDef();
  def.type = type;
  Body box = world.createBody(def);
  EdgeShape poly = new EdgeShape();
  poly.set(new Vector2(0, 0), new Vector2(x2 - x1, y2 - y1));
  box.createFixture(poly, density);
  box.setTransform(x1, y1, 0);
  poly.dispose();
  return box;
}

public void getVertex0 (Vector2 vec) {
  jniGetVertex0(addr, vertex);
  vec.x = vertex[0];
  vec.y = vertex[1];
}

groundBody = world.createBody(bodyDef);
EdgeShape shape = new EdgeShape();
shape.set(new Vector2(-20.0f, 0.0f), new Vector2(20.0f, 0.0f));
groundBody.createFixture(shape, 0.0f);

EdgeShape shape = new EdgeShape();
shape.set(new Vector2(-20, 0), new Vector2(20, 0));
ground.createFixture(shape, 0);
shape.dispose();
EdgeShape shape = new EdgeShape();
shape.setRadius(0);
shape.set(new Vector2(-8, 1), new Vector2(-6, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-6, 1), new Vector2(-4, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-4, 1), new Vector2(-2, 1));
ground.createFixture(shape, 0);
shape.dispose();
EdgeShape shape = new EdgeShape();
float d = 2 * 2 * 0.005f;
shape.setRadius(0);
shape.set(new Vector2(-1 + d, 3), new Vector2(1 - d, 3));
ground.createFixture(shape, 0);
shape.set(new Vector2(1, 3 + d), new Vector2(1, 5 - d));
ground.createFixture(shape, 0);
shape.set(new Vector2(1 - d, 5), new Vector2(-1 + d, 5));
ground.createFixture(shape, 0);
shape.set(new Vector2(-1, 5 - d), new Vector2(-1, 3 + d));
ground.createFixture(shape, 0);
shape.dispose();

/** Returns the shape of this fixture */
public Shape getShape () {
  if (shape == null) {
    org.jbox2d.collision.shapes.Shape shape2 = fixture.getShape();
    ShapeType type = shape2.getType();
    if (type == ShapeType.CHAIN) shape = new ChainShape((org.jbox2d.collision.shapes.ChainShape)shape2);
    if (type == ShapeType.CIRCLE) shape = new CircleShape((org.jbox2d.collision.shapes.CircleShape)shape2);
    if (type == ShapeType.EDGE) shape = new EdgeShape((org.jbox2d.collision.shapes.EdgeShape)shape2);
    if (type == ShapeType.POLYGON) shape = new PolygonShape((org.jbox2d.collision.shapes.PolygonShape)shape2);
  }
  return shape;
}

/** Set this as an isolated edge. */
public void set (Vector2 v1, Vector2 v2) {
  set(v1.x, v1.y, v2.x, v2.y);
}

edge.getVertex1(vertices[0]);
edge.getVertex2(vertices[1]);
transform.mul(vertices[0]);
transform.mul(vertices[1]);

public void defineMario(){
  BodyDef bdef = new BodyDef();
  bdef.position.set(32 / MarioBros.PPM, 32 / MarioBros.PPM);
  bdef.type = BodyDef.BodyType.DynamicBody;
  b2body = world.createBody(bdef);
  FixtureDef fdef = new FixtureDef();
  CircleShape shape = new CircleShape();
  shape.setRadius(6 / MarioBros.PPM);
  fdef.filter.categoryBits = MarioBros.MARIO_BIT;
  fdef.filter.maskBits = MarioBros.GROUND_BIT |
      MarioBros.COIN_BIT |
      MarioBros.BRICK_BIT |
      MarioBros.ENEMY_BIT |
      MarioBros.OBJECT_BIT |
      MarioBros.ENEMY_HEAD_BIT |
      MarioBros.ITEM_BIT;
  fdef.shape = shape;
  b2body.createFixture(fdef).setUserData(this);
  EdgeShape head = new EdgeShape();
  head.set(new Vector2(-2 / MarioBros.PPM, 6 / MarioBros.PPM), new Vector2(2 / MarioBros.PPM, 6 / MarioBros.PPM));
  fdef.filter.categoryBits = MarioBros.MARIO_HEAD_BIT;
  fdef.shape = head;
  fdef.isSensor = true;
  b2body.createFixture(fdef).setUserData(this);
}

EdgeShape shape = new EdgeShape();
shape.set(new Vector2(-20, 0), new Vector2(20, 0));
ground.createFixture(shape, 0);
shape.dispose();
EdgeShape shape = new EdgeShape();
shape.setRadius(0);
shape.set(new Vector2(-8, 1), new Vector2(-6, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-6, 1), new Vector2(-4, 1));
ground.createFixture(shape, 0);
shape.set(new Vector2(-4, 1), new Vector2(-2, 1));
ground.createFixture(shape, 0);
shape.dispose();
EdgeShape shape = new EdgeShape();
float d = 2 * 2 * 0.005f;
shape.setRadius(0);
shape.set(new Vector2(-1 + d, 3), new Vector2(1 - d, 3));
ground.createFixture(shape, 0);
shape.set(new Vector2(1, 3 + d), new Vector2(1, 5 - d));
ground.createFixture(shape, 0);
shape.set(new Vector2(1 - d, 5), new Vector2(-1 + d, 5));
ground.createFixture(shape, 0);
shape.set(new Vector2(-1, 5 - d), new Vector2(-1, 3 + d));
ground.createFixture(shape, 0);
shape.dispose();

/** Returns the shape of this fixture */
public Shape getShape () {
  if (shape == null) {
    long shapeAddr = jniGetShape(addr);
    if (shapeAddr == 0) throw new GdxRuntimeException("Null shape address!");
    int type = Shape.jniGetType(shapeAddr);
    switch (type) {
    case 0:
      shape = new CircleShape(shapeAddr);
      break;
    case 1:
      shape = new EdgeShape(shapeAddr);
      break;
    case 2:
      shape = new PolygonShape(shapeAddr);
      break;
    case 3:
      shape = new ChainShape(shapeAddr);
      break;
    default:
      throw new GdxRuntimeException("Unknown shape type!");
    }
  }
  return shape;
}

/** Set this as an isolated edge. */
public void set (Vector2 v1, Vector2 v2) {
  set(v1.x, v1.y, v2.x, v2.y);
}

edge.getVertex1(vertices[0]);
edge.getVertex2(vertices[1]);
transform.mul(vertices[0]);
transform.mul(vertices[1]);

@Override
protected void createWorld (World world) {
  {
    BodyDef bd = new BodyDef();
    Body ground = world.createBody(bd);
    EdgeShape shape = new EdgeShape();
    shape.set(new Vector2(-40, 0), new Vector2(40, 0));
    ground.createFixture(shape, 0);
    shape.dispose();
  }
  {
    CircleShape shape = new CircleShape();
    shape.setRadius(1.0f);
    for (int i = 0; i < e_count; i++) {
      BodyDef bd = new BodyDef();
      bd.type = BodyType.DynamicBody;
      bd.position.set(0, 4.0f + 3.0f * i);
      Body body = world.createBody(bd);
      body.createFixture(shape, 1.0f);
    }
    shape.dispose();
  }
}

public void redefineMario(){
  Vector2 position = b2body.getPosition();
  world.destroyBody(b2body);
  BodyDef bdef = new BodyDef();
  bdef.position.set(position);
  bdef.type = BodyDef.BodyType.DynamicBody;
  b2body = world.createBody(bdef);
  FixtureDef fdef = new FixtureDef();
  CircleShape shape = new CircleShape();
  shape.setRadius(6 / MarioBros.PPM);
  fdef.filter.categoryBits = MarioBros.MARIO_BIT;
  fdef.filter.maskBits = MarioBros.GROUND_BIT |
      MarioBros.COIN_BIT |
      MarioBros.BRICK_BIT |
      MarioBros.ENEMY_BIT |
      MarioBros.OBJECT_BIT |
      MarioBros.ENEMY_HEAD_BIT |
      MarioBros.ITEM_BIT;
  fdef.shape = shape;
  b2body.createFixture(fdef).setUserData(this);
  EdgeShape head = new EdgeShape();
  head.set(new Vector2(-2 / MarioBros.PPM, 6 / MarioBros.PPM), new Vector2(2 / MarioBros.PPM, 6 / MarioBros.PPM));
  fdef.filter.categoryBits = MarioBros.MARIO_HEAD_BIT;
  fdef.shape = head;
  fdef.isSensor = true;
  b2body.createFixture(fdef).setUserData(this);
  timeToRedefineMario = false;
}

/** Returns the shape of this fixture */
public Shape getShape () {
  if (shape == null) {
    long shapeAddr = jniGetShape(addr);
    if (shapeAddr == 0) throw new GdxRuntimeException("Null shape address!");
    int type = Shape.jniGetType(shapeAddr);
    switch (type) {
    case 0:
      shape = new CircleShape(shapeAddr);
      break;
    case 1:
      shape = new EdgeShape(shapeAddr);
      break;
    case 2:
      shape = new PolygonShape(shapeAddr);
      break;
    case 3:
      shape = new ChainShape(shapeAddr);
      break;
    default:
      throw new GdxRuntimeException("Unknown shape type!");
    }
  }
  return shape;
}

/** Set this as an isolated edge. */
public void set (Vector2 v1, Vector2 v2) {
  set(v1.x, v1.y, v2.x, v2.y);
}

edge.getVertex1(vertices[0]);
edge.getVertex2(vertices[1]);
transform.mul(vertices[0]);
transform.mul(vertices[1]);

public void getVertex0 (Vector2 vec) {
  jniGetVertex0(addr, vertex);
  vec.x = vertex[0];
  vec.y = vertex[1];
}

Body ground = world.createBody(bd);
EdgeShape shape = new EdgeShape();
shape.set(new Vector2(-40, 0), new Vector2(40, 0));
ground.createFixture(shape, 0.0f);
shape.dispose();

public void defineBigMario(){
  Vector2 currentPosition = b2body.getPosition();
  world.destroyBody(b2body);
  BodyDef bdef = new BodyDef();
  bdef.position.set(currentPosition.add(0, 10 / MarioBros.PPM));
  bdef.type = BodyDef.BodyType.DynamicBody;
  b2body = world.createBody(bdef);
  FixtureDef fdef = new FixtureDef();
  CircleShape shape = new CircleShape();
  shape.setRadius(6 / MarioBros.PPM);
  fdef.filter.categoryBits = MarioBros.MARIO_BIT;
  fdef.filter.maskBits = MarioBros.GROUND_BIT |
      MarioBros.COIN_BIT |
      MarioBros.BRICK_BIT |
      MarioBros.ENEMY_BIT |
      MarioBros.OBJECT_BIT |
      MarioBros.ENEMY_HEAD_BIT |
      MarioBros.ITEM_BIT;
  fdef.shape = shape;
  b2body.createFixture(fdef).setUserData(this);
  shape.setPosition(new Vector2(0, -14 / MarioBros.PPM));
  b2body.createFixture(fdef).setUserData(this);
  EdgeShape head = new EdgeShape();
  head.set(new Vector2(-2 / MarioBros.PPM, 6 / MarioBros.PPM), new Vector2(2 / MarioBros.PPM, 6 / MarioBros.PPM));
  fdef.filter.categoryBits = MarioBros.MARIO_HEAD_BIT;
  fdef.shape = head;
  fdef.isSensor = true;
  b2body.createFixture(fdef).setUserData(this);
  timeToDefineBigMario = false;
}

Javadoc

A line segment (edge) shape. These can be connected in chains or loops to other edge shapes. The connectivity information is used to ensure correct contact normals.

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How to useEdgeShape in com.badlogic.gdx.physics.box2d

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EdgeShape
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com.badlogic.gdx.physics.box2d