shape.setAsBox(1.0f, 0.2f, new Vec2(0.0f, 4.0f), -0.2f);
ground.createFixture(shape, 0);
shape.setAsBox(1.5f, 0.2f, new Vec2(-1.2f, 5.2f), -1.5f);
ground.createFixture(shape, 0);
shape.setAsBox(0.5f, 50.0f, new Vec2(5.0f, 0.0f), 0.0f);
ground.createFixture(shape, 0);
shape.setAsBox(0.5f, 3.0f, new Vec2(-8.0f, 0.0f), 0.0f);
ground.createFixture(shape, 0);