#ifndef _LAYER_H_
#define _LAYER_H_

#include <list>

#include <wgd/instance2d.h>
#include <wgd/sprite2d.h>

#include "Bugsy.h"
#include "Level.h"

class Object;

class Layer : public wgd::Instance2D
{
public:
	OBJECT(wgd::Instance2D, Layer)
	
	static const float LEDGE_HEIGHT;
	
	Layer(const wgd::OID& oid);
	Layer(Level *level, int width, int height, float vOffset = 0.0f, float alpha = 1.0f);
	~Layer();
	
	void		draw(wgd::SceneGraph& graph, wgd::Camera2D* camera);
	void		update(float timeStep);
	int			getHeight(int x, int y);
	int			getHeight(const wgd::vector3d& pos);
	float		getWaterHeight(int x, int y);
	float		getWaterHeight(const wgd::vector3d& pos);
	bool		isWaterAboveTile(int x, int y);
	bool		isWaterAboveTile(const wgd::vector3d& pos);
	TileType	getTileType(int x, int y);
	Level*		getLevel()	{ return level; }
	void		setHeight(int x, int y, int height);
	void		changeHeight(int x, int y, int deltaHeight);
	
	void		addObject(::Object* obj);
	void		removeObject(::Object* obj);
	
	float		getTop();
	void		setTop(float newY);
	float		getAlpha();
	void		setAlpha(float newAlpha);
	
private:
	void		clearTiles(int x, int y, int width=1, int height=1);
	void		makeTiles(int x, int y, int width=1, int height=1);
	void		markForRefresh(int x, int y, int width, int height);
	
	Level*		level;
	TileType*	tileData;
	int*		heightData;
	float*		waterData;
	
	float		top, alpha;
	
	//Deformable Terrain flags
	bool		refreshRequired;
	int		refX, refY, refW, refH;
	
	std::vector<std::list<wgd::Sprite2D*> >	tiles;
	std::vector< ::Object*>		objects;
	
	//Debugging vars
	wgd::Sprite2D**	dbgTileMap;
	float			dbgMaxHeight;
	wgd::Drawable<DebugVertex>* lines;
};

#endif //_LAYER_H_