Boulder Balance

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void renderer(World world) {

  // clear the background

   background(213,222,217);

   if(game_mode == 0){

      image(title,width/2-160 , height/2-80);

      fill(122,106,83);

      text("See how long you can balance the large boulder. Use your mouse to move the small boulder.", 160, height/2);

      text("Don't let the the larger boulder hit the walls or ground.",260,height/2+15);   

      text("Click to start.",width/2-30,height/2+40);    

} else {

  // iterate through the bodies

  Body body;

  for (body = world.getBodyList(); body != null; body = body.getNext()) {

    // iterate through the shapes of the body

    org.jbox2d.collision.Shape shape;

    for (shape = body.getShapeList(); shape != null; shape = shape.getNext()) {

      // find out the shape type

      ShapeType st = shape.getType();

      if (st == ShapeType.POLYGON_SHAPE) {

        // polygon? let's iterate through its vertices while using begin/endShape()

        beginShape();

        PolygonShape poly = (PolygonShape) shape;

        int count = poly.getVertexCount();

        Vec2[] verts = poly.getVertices();

        if(body == ground){

          //ground style

          noStroke();

          stroke(255,50);

          fill(122,106,83);

        } else {

          //wall style

          fill(122,106,83);

          noStroke();

          stroke(255,50);

        }

        for(int i = 0; i < count; i++) {

          Vec2 vert = physics.worldToScreen(body.getWorldPoint(verts[i]));

          vertex(vert.x, vert.y);

        }

        Vec2 firstVert = physics.worldToScreen(body.getWorldPoint(verts[0]));

        vertex(firstVert.x, firstVert.y);

        endShape();

      } else if (st == ShapeType.CIRCLE_SHAPE) {

        // circle? let's find its center and radius and draw an ellipse

        CircleShape circle = (CircleShape) shape;

        Vec2 pos = physics.worldToScreen(body.getWorldPoint(circle.getLocalPosition()));

        float radius = physics.worldToScreen(circle.getRadius());

        ellipseMode(CENTER);

        if(body == lilBall){

          //little ball style

          stroke(122,106,83);

          fill(217,206,178);

        } else{

          //balanced ball style

          stroke(122,106,83);

          fill(148,140,117);

        }

        ellipse(pos.x, pos.y, radius*2, radius*2);

        // we'll add one more line to see how it rotates

        //line(pos.x, pos.y, pos.x + radius*cos(-body.getAngle()), pos.y + radius*sin(-body.getAngle()));

        ellipse(pos.x + .5 * radius*cos(-body.getAngle()),pos.y + .5 * radius*sin(-body.getAngle()), 20,20);

      }

    }

  }

  displayUI();

}

}

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