//**************************************************************************
//**
//**    ##   ##    ##    ##   ##   ####     ####   ###     ###
//**    ##   ##  ##  ##  ##   ##  ##  ##   ##  ##  ####   ####
//**     ## ##  ##    ##  ## ##  ##    ## ##    ## ## ## ## ##
//**     ## ##  ########  ## ##  ##    ## ##    ## ##  ###  ##
//**      ###   ##    ##   ###    ##  ##   ##  ##  ##       ##
//**       #    ##    ##    #      ####     ####   ##       ##
//**
//**    $Id: LightEffect.vc 1583 2006-06-27 19:05:42Z dj_jl $
//**
//**    Copyright (C) 1999-2006 Jānis Legzdiņš
//**
//**    This program is free software; you can redistribute it and/or
//**  modify it under the terms of the GNU General Public License
//**  as published by the Free Software Foundation; either version 2
//**  of the License, or (at your option) any later version.
//**
//**    This program is distributed in the hope that it will be useful,
//**  but WITHOUT ANY WARRANTY; without even the implied warranty of
//**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//**  GNU General Public License for more details.
//**
//**************************************************************************

class LightEffect : Lighting;

enum
{
	LIGHTEV_Fade,
	LIGHTEV_Glow,
	LIGHTEV_Flicker,
	LIGHTEV_Strobe
};

int			Type;
int			Value1;
int			Value2;
float		Time1;
float		Time2;
int			Direction;
float		Time;
float		Delta;

//============================================================================
//
//  Init
//
//============================================================================

void Init(sector_t* InSector, int Arg1, int Arg2, int Arg3, int Arg4, int Arg5,
	int InType)
{
	Sector = InSector;
	Sector->LightingData = self;

	Type = InType;
	Time = 0.0;
	switch (Type)
	{
	case LIGHTEV_Fade:
		Value1 = Arg2;	// destination lightlevel
		Delta = itof((Arg2 - Sector->params.lightlevel) / Arg3) * 32.0;	// delta lightlevel
		if (Sector->params.lightlevel <= Arg2)
		{
			Direction = 1;	// get brighter
		}
		else
		{
			Direction = -1;
		}
		break;

	case LIGHTEV_Glow:
		Value1 = Arg2;	// upper lightlevel
		Value2 = Arg3;	// lower lightlevel
		Delta = itof((Arg2 - Sector->params.lightlevel) / Arg4) * 32.0;	// lightlevel delta
		if (Sector->params.lightlevel <= Arg2)
		{
			Direction = 1;	// get brighter
		}
		else
		{
			Direction = -1;
		}
		break;

	case LIGHTEV_Flicker:
		Value1 = Arg2;	// upper lightlevel
		Value2 = Arg3;	// lower lightlevel
		Sector->params.lightlevel = Value1;
		Time = itof((P_Random() & 64) + 1) / 32.0;
		break;

	case LIGHTEV_Strobe:
		Value1 = Arg2;	// upper lightlevel
		Value2 = Arg3;	// lower lightlevel
		Time1 = itof(Arg4) / 35.0;	// upper tics
		Time2 = itof(Arg5) / 35.0;	// lower tics
		Time = itof(Arg4) / 35.0;
		Sector->params.lightlevel = Value1;
		break;
	}
}

//============================================================================
//
//	Tick
//
//============================================================================

void Tick(float DeltaTime)
{
	int d;

	if (Time)
	{
		Time -= DeltaTime;
		if (Time <= 0.0)
		{
			Time = 0.0;
		}
		return;
	}
	switch (Type)
	{
	case LIGHTEV_Fade:
		d = ftoi(Delta * DeltaTime);
		if (!d)
			d = Direction;
		Sector->params.lightlevel += d;
		if (Direction == 1)
		{
			if (Sector->params.lightlevel >= Value1)
			{
				Sector->params.lightlevel = Value1;
				if (Sector->LightingData == self)
					Sector->LightingData = none;
				Destroy();
			}
		}
		else if (Sector->params.lightlevel <= Value1)
		{
			Sector->params.lightlevel = Value1;
			if (Sector->LightingData == self)
				Sector->LightingData = none;
			Destroy();
		}
		break;

	case LIGHTEV_Glow:
		Sector->params.lightlevel += ftoi(Delta * DeltaTime);
		if (Direction == 1)
		{
			if (Sector->params.lightlevel >= Value1)
			{
				Sector->params.lightlevel = Value1;
				Delta = -Delta;
				Direction = -1;	// reverse direction
			}
		}
		else if (Sector->params.lightlevel <= Value2)
		{
			Sector->params.lightlevel = Value2;
			Delta = -Delta;
			Direction = 1;	// reverse direction
		}
		break;

	case LIGHTEV_Flicker:
		if (Sector->params.lightlevel == Value1)
		{
			Sector->params.lightlevel = Value2;
			Time = itof((P_Random() & 7) + 1) / 32.0;
		}
		else
		{
			Sector->params.lightlevel = Value1;
			Time = itof((P_Random() & 31) + 1) / 32.0;
		}
		break;

	case LIGHTEV_Strobe:
		if (Sector->params.lightlevel == Value1)
		{
			Sector->params.lightlevel = Value2;
			Time = Time2;
		}
		else
		{
			Sector->params.lightlevel = Value1;
			Time = Time1;
		}
		break;
	}
}

defaultproperties
{
}