#ifndef PHYSICS_EXAMPLES
#define PHYSICS_EXAMPLES

#include "inc/rat_physics.h"
#include "drawutil/draw.h"
#include "drawutil/ortho.h"
#include "drawutil/font.h"
#include "drawutil/extensions.h"

#if defined(RAT_PHYSICS_WINDOWS)
#	include "SDL\include\SDL.h"
#	include "SDL\include\SDL_opengl.h"
#	include <GL\wglext.h>
#else
#	include <SDL/SDL.h>
#	include <SDL/SDL_opengl.h>
#endif

#include <cstdlib>
#include <cstdio>
#include <ctime>
#include <iostream>
#include <string>

#define WINDOW_WIDTH	800
#define WINDOW_HEIGHT	600

#define SCENE_WIDTH		800
#define SCENE_HEIGHT	600

using namespace std;

class RatPhysicsExample
{
public:
	rat_world *world;
	string title;
	vector2 bounds;
	vector2 pickoffset;

	RatPhysicsExample(string name);
	RatPhysicsExample(const char *name);
	RatPhysicsExample(char *name);

	virtual bool InitWorld()=0;
	virtual bool UpdateWorld(rat_real timestep)=0;
	virtual bool UpdateVisuals()=0;
	virtual bool FreeWorld()=0;

	bool WorldPointPick(vector2 point,rat_body **bodypicked,vector2 *local_picked);
};

extern rat_glyph_font *glyphfont;
extern rat_texture_font *outfont;
extern const unsigned int num_examples;
extern char keys[SDLK_LAST];

extern bool show_arbiters;
extern bool show_aabbs;
extern bool show_quadtree;

extern rat_body *grabbed_body;
extern rat_spring *grabbed_spring;
extern bool has_grabbed;

extern vector2 world_cursor;

void rat_examples_create_walls(rat_world *world);
void rat_examples_create_circle_row(rat_world *world,rat_real diameter,rat_real padx,rat_real y,rat_real xcenter,unsigned int numcircs,int tag);
void rat_examples_create_box_row(rat_world *world,vector2 boxsize,rat_real padx,rat_real y,rat_real xcenter,unsigned int numboxes,int tag);
void rat_examples_create_chain(rat_world *world,bool anchored,vector2 boxsize,rat_real y,rat_real xcenter,unsigned int numboxes,int tag);
void rat_examples_leave_world_callback(rat_world *world,rat_body *body,void *userdata);

#endif