#include <stdlib.h>
#include "SceneGraph.h"
#include "xml_file/universe.h"
#include "xml_file/cube.h"
#include "xml_file/snake576x384.h"

static void
earth_move(SceneGraphPtr node, int screen_w, int screen_h)
{
    static float dest_x = 0.3f;
    static float dest_y = 0.5f;

    node->angle[1] += 1.0f;
    if (node->angle[1] > 360.0f) {
	node->angle[1] = 0.0f;
    }

    node->xyz[0] += dest_x;
    if ((int)node->xyz[0] > screen_w || (int)node->xyz[0] < 0) {
	dest_x = -dest_x;
    }

    node->xyz[1] += dest_y;
    if ((int)node->xyz[1] > screen_h || (int)node->xyz[1] < 0) {
	dest_y = -dest_y;
    }
}

static void
moon_move(SceneGraphPtr node, int screen_w, int screen_h)
{
    node->angle[0] += 1.0f;
    if (node->angle[1] > 360.0f) {
	node->angle[1] = 0.0f;
    }
}

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

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

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

static void
cube_move2(SceneGraphPtr node, int screen_w, int screen_h)
{
    node->angle[1] += 1.0f;
    if (node->angle[1] > 360.0f) {
	node->angle[1] = 0.0f;
    }

    node->xyz[0] += node->stack_xyz[0];
    if ((int)node->xyz[0] > screen_w || (int)node->xyz[0] < 0) {
	node->stack_xyz[0] = -node->stack_xyz[0];
    }

    node->xyz[1] += node->stack_xyz[1];
    if ((int)node->xyz[1] > screen_h || (int)node->xyz[1] < 0) {
	node->stack_xyz[1] = -node->stack_xyz[1];
    }
}

static void
cube_move(SceneGraphPtr node, int screen_w, int screen_h)
{
    node->angle[1] += 1.0f;
    if (node->angle[1] > 360.0f) {
	node->angle[1] = 0.0f;
    }

    node->xyz[0] += node->stack_xyz[0];
    if ((int)node->xyz[0] > screen_w || (int)node->xyz[0] < 0) {
	node->stack_xyz[0] = -node->stack_xyz[0];
    }

    node->xyz[1] += node->stack_xyz[1];
    if ((int)node->xyz[1] > screen_h || (int)node->xyz[1] < 0) {

	srandom(random());

	SceneGraphPtr p = node->clone();
	p->position_init();
	node->addBrother(p);
	scene_graph->set_move_collision(p, cube_move2, cube_collision);
	p->stack_xyz[0] = (float)(random() % 5);
	p->stack_xyz[1] = (float)(random() % 5);
	//p->xyz[0] = screen_w/2;
	//p->xyz[1] = screen_h/2;
	p->xyz[2] = node->xyz[2]+1000.0f;

	node->stack_xyz[1] = -node->stack_xyz[1];
    }
}

void
node_init(void)
{
#if 0
    //scene_graph->set_move_collision(Earth, earth_move, earth_collision);
    //scene_graph->set_move_collision(Moon, moon_move, moon_collision);
    //scene_graph->set_move_collision(Plain, cube_move, cube_collision);
#else
    scene_graph->set_move_collision(Cube, cube_move, cube_collision);
    Cube->stack_xyz[0] = 2.0f;
    Cube->stack_xyz[1] = 2.0f;
#endif
}