#ifndef _MOUSE_H_
#define _MOUSE_H_

#include <wgd/vector.h>
#include <wgd/mouse.h>
#include <wgd/imodel.h>

enum MouseBtn
{
	MOUSE_BTN_LEFT,
	MOUSE_BTN_MIDDLE,
	MOUSE_BTN_RIGHT,
	MOUSE_BTN_COUNT
};

class WgdMouse
{
public:
	static void				init();				//
	static void				update();			//Call this every frame to update mouse info
	static void				updateDimensions();	
	
	//These 2D functions return values in the range 0 to 1 inclusive
	static wgd::vector2d	getPos()			{ return _pos; }
	static wgd::vector2d	getDelta()			{ return _delta; }
	static int				getWheel()			{ return mouse->deltaZ(); }
	
	//As getPos, but with range -1 to 1 inclusive
	static wgd::vector2d	getAim()			{ return _aim; }
	
	//Get where the mouse is pointing at on the 'ground' plane
	static wgd::vector3d	getPos3D(bool snap);
	static bool				isOnScreen();
	
	//Buttons
	static bool				buttonPressed		(MouseBtn btn)	{ return !lastButtons[btn] && buttons[btn]; }
	static bool				buttonReleased		(MouseBtn btn)	{ return lastButtons[btn] && !buttons[btn]; }
	static bool				buttonDown			(MouseBtn btn)	{ return buttons[btn]; }
	static bool				buttonUp			(MouseBtn btn)	{ return !buttons[btn]; }
	static bool				click				(MouseBtn btn)	{ return buttonReleased(btn) && !mouseMovedSinceClick[btn]; }
	static bool				drag				(MouseBtn btn)	{ return _delta.length() > 0.0f && buttons[btn]; }
	
protected:
	static wgd::Mouse*		mouse;				//Cached wgd::Mouse pointer
	static doste::dvm::OID	scene;				//Cached doste::OID pointer
	
	static float			_top, _left;		//Scene widget offset
	static float			_width, _height;	//Scene widget dimensions
	
	static wgd::vector2d	_pos;				//Mouse co-ordinates on scene widget (range 0 to 1)
	static wgd::vector2d	_aim;				//Mouse co-ordinates on scene widget (range -1 to 1)
	static wgd::vector2d	_delta;				//Mouse movement between this frame and the last
	static wgd::vector2d	_lastPos;			//Mouse co-ords on last frame, for delta calculation
	
	static bool				buttons[MOUSE_BTN_COUNT];
	static bool				lastButtons[MOUSE_BTN_COUNT];
	static bool				mouseMovedSinceClick[MOUSE_BTN_COUNT];
};

#endif //_MOUSE_H_