#include "SceneGraphRoot.h"
#include "SGList.h"

// prototype
static void ball_move(SceneGraphPtr node, int screen_w, int screen_h);
static void ball_collision(SceneGraphPtr node, int screen_w, int screen_h);

static void
ball_move(SceneGraphPtr node, int screen_w, int screen_h)
{
    node->xyz[1] += 3.0f;
}

static void
ball_collision(SceneGraphPtr node, int screen_w, int screen_h,
	       SceneGraphPtr tree)
{
}


void
ball_bound_init(int screen_w, int screen_h)
{
    SceneGraphPtr ball;

    sgroot->createFromXMLfile("xml_file/Ball.xml");
    ball = sgroot->createSceneGraph(Ball);
    ball->set_move_collision(ball_move, ball_collision);
    ball->xyz[0] = screen_w/2;
    ball->xyz[1] = screen_h/2;

    sgroot->setSceneData(ball);
}