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/*  Project nGenEx
	Destroyer Studios LLC
	Copyright © 1997-2004. All Rights Reserved.

	SUBSYSTEM:    nGenEx.lib
	FILE:         Light.cpp
	AUTHOR:       John DiCamillo


	OVERVIEW
	========
	Dynamic Light Source
*/

#include "MemDebug.h"
#include "Light.h"
#include "Scene.h"

// +--------------------------------------------------------------------+

int Light::id_key = 1;

// +--------------------------------------------------------------------+

Light::Light(float l, float dl, int time)
: id(id_key++), type(LIGHT_POINT), life(time), 
light(l), dldt(dl), color(255,255,255),
active(true), shadow(false), scene(0)
{ }

// +--------------------------------------------------------------------+

Light::~Light()
{ }

// +--------------------------------------------------------------------+

void
Light::Update()
{
	if (dldt < 1.0f)
	light *= dldt;

	if (life > 0) life--;
}

// +--------------------------------------------------------------------+

void
Light::Destroy()
{
	if (scene)
	scene->DelLight(this);

	delete this;
}

// +--------------------------------------------------------------------+

void
Light::MoveTo(const Point& dst)
{
	//if (type != LIGHT_DIRECTIONAL)
	loc = dst;
}

void
Light::TranslateBy(const Point& ref)
{
	if (type != LIGHT_DIRECTIONAL)
	loc = loc - ref;
}