#pragma once
#include <assert.h>

typedef enum { bShowHelp, bMoveLight, bLookFromLight, bDots, bTurbo, LAST_BOOL } bool_t;
typedef enum { fRayPathLength, LAST_NUMBER } number_t;

enum { IDC_GEN_BUTTON = -4, IDC_RESET_BUTTON, IDC_SAVE_BUTTON, IDC_LOAD_BUTTON };

#define CHARBUF	100				// The max length of a line in the save file

typedef float (*CONVERTER)(float a);
typedef void (*ONCHANGE_CALLBACK)(void);

float noconvert(float a);	// { return a; }

float convert100(float a);
float convert10(float a);
float convert1(float a);
float convertNSamples(float a);
float convertDepthResolution(float a);

void OnChange();			// {}


class Parameters {
	bool bparam[LAST_BOOL];
	wchar_t bname[LAST_BOOL][CHARBUF];

	int param[LAST_NUMBER];	// 0..100 (0..num_steps)
	wchar_t name[LAST_NUMBER][CHARBUF];
	int numsteps[LAST_NUMBER];

	CONVERTER ffunc[LAST_NUMBER];
	ONCHANGE_CALLBACK chfunc[LAST_NUMBER+3];

	CDXUTDialog* g_HUD;

	bool bSilent;
	const static int CHARBUFFER_SIZE = 200;
	enum { checkboxID0 = 1000, sliderID0 = 2000, staticID0 = 3000, upID0 = 4000, downID0 = 5000 };

public:
	void Setup( CDXUTDialog* g_HUD );
	void Setup( CDXUTDialog* g_HUD, ONCHANGE_CALLBACK OnReset, ONCHANGE_CALLBACK OnSave = OnChange, ONCHANGE_CALLBACK OnLoad = OnChange);

	bool Get( bool_t i );
	float Get( number_t i );
	int GetInt( number_t i );

	void SetBool( bool_t ID, bool b );
	void SetFloat( number_t ID, float v );
	void SetInt( number_t ID, int v );

	void Add( bool_t ID, char* label, char cHotKey = 0 );
	void Add( number_t ID, char* label, int num_steps);

	void Add( number_t ID, char* label, int num_steps, 
		CONVERTER ff, ONCHANGE_CALLBACK chf = OnChange );

	void Add( number_t ID, char* label, int num_steps, char cKeyDecr, char cKeyIncr, 
		CONVERTER ff = noconvert, ONCHANGE_CALLBACK chf = OnChange );

	void UpdateFromHUD( int controlID );

	void SaveToFile( char* fileName );
	void LoadFromFile( char* fileName );
};