/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   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, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Fabian 'x3n' Landau
   co-programmer:
*/

#include "sound/resource_sound_buffer.h"
#include "util/loading/load_param.h"
#include "util/loading/factory.h"
#include "debug.h"

#include "mover.h"
#include "state.h"
#include "tools/camera.h"


ObjectListDefinition(Mover);
CREATE_FACTORY(Mover);

/**
 *  initializes the Mover from a XmlElement
*/
Mover::Mover(const TiXmlElement* root)
{
    this->registerObject(this, Mover::_objectList);
    this->toList(OM_ENVIRON);

    this->targetCoordinates = Vector(0, 0, 0);
    this->originCoordinates = Vector(0, 87, -256);
    this->actionRadius = 40.0;
    this->actionTime = 1.0;

    if (root != NULL)
        this->loadParams(root);

    this->updateNode(0.001);
    this->originCoordinates = this->getAbsCoor();
    this->state = Closed;

    this->soundSource_starting.setSourceNode(this);
    this->soundSource_moving.setSourceNode(this);
    this->soundSource_ending.setSourceNode(this);

//    this->soundSource_starting.setRolloffFactor(0.0);
//    this->soundSource_moving.setRolloffFactor(0.0);
//    this->soundSource_ending.setRolloffFactor(0.0);
}

Mover::~Mover()
{
    if (this->soundSource_starting.isPlaying())
        this->soundSource_starting.stop();
    if (this->soundSource_moving.isPlaying())
        this->soundSource_moving.stop();
    if (this->soundSource_ending.isPlaying())
        this->soundSource_ending.stop();
}

/**
 * loads the Settings of the Mover from an XML-element.
 * @param root the XML-element to load the Movers's properties from
 */
void Mover::loadParams(const TiXmlElement* root)
{
    WorldEntity::loadParams(root);

    LoadParam(root, "rel-target-coor", this, Mover, setTargetCoordinates)
        .describe("sets the relative target coordinates of the door");
    LoadParam(root, "action-radius", this, Mover, setActionRadius)
        .describe("sets the action radius of the door")
        .defaultValues(40.0);
    LoadParam(root, "action-time", this, Mover, setActionTime)
        .describe("sets the action time of the door")
        .defaultValues(1.0);
    LoadParam(root, "stay-open-time", this, Mover, setStayOpenTime)
        .describe("sets the time, the door must stay open")
        .defaultValues(0.0);
    LoadParam(root, "opening-sound", this, Mover, setOpeningSoundFile)
        .describe("Sets the file of the opening sound source");
    LoadParam(root, "opened-sound", this, Mover, setOpenedSoundFile)
        .describe("Sets the file of the opened sound source");
    LoadParam(root, "moving-sound", this, Mover, setMovingSoundFile)
        .describe("Sets the file of the moving sound source");
    LoadParam(root, "closing-sound", this, Mover, setClosingSoundFile)
        .describe("Sets the file of the closing sound source");
    LoadParam(root, "closed-sound", this, Mover, setClosedSoundFile)
        .describe("Sets the file of the closed sound source");
}

void Mover::setOpeningSoundFile(const std::string& fileName)
{
    this->soundBuffer_opening = OrxSound::ResourceSoundBuffer(fileName);
}

void Mover::setOpenedSoundFile(const std::string& fileName)
{
    this->soundBuffer_opened = OrxSound::ResourceSoundBuffer(fileName);
}

void Mover::setMovingSoundFile(const std::string& fileName)
{
    this->soundBuffer_moving = OrxSound::ResourceSoundBuffer(fileName);
}

void Mover::setClosingSoundFile(const std::string& fileName)
{
    this->soundBuffer_closing = OrxSound::ResourceSoundBuffer(fileName);
}

void Mover::setClosedSoundFile(const std::string& fileName)
{
    this->soundBuffer_closed = OrxSound::ResourceSoundBuffer(fileName);
}

/**
 * tick function
 */
void Mover::tick(float dt)
{
    if (this->state == Closed)
    {
        if (this->checkPlayerInActionRadius())
        {
            this->state = Opening;
            if (this->soundBuffer_opening.loaded())
                this->soundSource_starting.play(this->soundBuffer_opening);
            if (this->soundBuffer_moving.loaded())
                this->soundSource_moving.play(this->soundBuffer_moving, 1.0, true);
        }
    }
    else if (this->state == Opening)
    {
        if (this->checkOpen(dt))
        {
            this->state = Open;
            this->setAbsCoor(this->originCoordinates + this->targetCoordinates);
            if (this->soundBuffer_opened.loaded())
                this->soundSource_ending.play(this->soundBuffer_opened);
            if (this->soundBuffer_moving.loaded())
                this->soundSource_moving.stop();
        }
        this->openTime = 0;
    }
    else if (this->state == Open)
    {
        this->openTime += dt;
        if (this->openTime >= this->stayOpenTime)
        {
            if (!this->checkPlayerInActionRadius())
            {
                this->state = Closing;
                if (this->soundBuffer_closing.loaded())
                    this->soundSource_starting.play(this->soundBuffer_closing);
                if (this->soundBuffer_moving.loaded())
                    this->soundSource_moving.play(this->soundBuffer_moving, 1.0, true);
            }
        }
    }
    else if (this->state == Closing)
    {
        if (this->checkClosed(dt))
        {
            this->state = Closed;
            this->setAbsCoor(this->originCoordinates);
            if (this->soundBuffer_closed.loaded())
                this->soundSource_ending.play(this->soundBuffer_closed);
            if (this->soundBuffer_moving.loaded())
                this->soundSource_moving.stop();
        }
        if (this->checkPlayerInActionRadius())
        {
            this->state = Opening;
        }
    }

    if (this->state == Opening)
    {
        this->shiftCoor(this->targetCoordinates / this->actionTime * dt);
    }
    else if (this->state == Closing)
    {
        this->shiftCoor(this->targetCoordinates * (-1) / this->actionTime * dt);
    }
}

/**
 * checks if the door is open
 */
bool Mover::checkOpen(float dt)
{
    if (fabs((this->originCoordinates - (this->getAbsCoor() - this->targetCoordinates)).len()) < fabs(2 * (this->targetCoordinates / this->actionTime * dt).len()))
        return true;
    
    return false;
}

/**
 * checks if the door is closed
 */
bool Mover::checkClosed(float dt)
{
    if (fabs((this->getAbsCoor() - this->originCoordinates).len()) < fabs(2 * (this->targetCoordinates / this->actionTime * dt).len()))
        return true;

    return false;
}

#include "playable.h"
#include "generic_npc.h"
/**
 * checks if the player is within the action radius
 */
bool Mover::checkPlayerInActionRadius()
{
    WorldEntity* entity;
    float distance;

    for (ObjectList<Playable>::const_iterator it = Playable::objectList().begin();
        it != Playable::objectList().end();
        ++it)
    // for all players
    {
        entity = (*it);
        distance = (this->originCoordinates - entity->getAbsCoor()).len();
        if (distance < this->actionRadius)
        {
            this->soundSource_starting.setSourceNode((PNode*)State::getCamera());   // bad hack!
            this->soundSource_moving.setSourceNode((PNode*)State::getCamera());     // TODO: make the sound louder without
            this->soundSource_ending.setSourceNode((PNode*)State::getCamera());     // attaching him to the player
            return true;
        }
    }

    for (ObjectList<GenericNPC>::const_iterator it = GenericNPC::objectList().begin();
        it != GenericNPC::objectList().end();
        ++it)
    {
        entity = (*it);
        distance = (this->originCoordinates - entity->getAbsCoor()).len();
        if (distance < this->actionRadius)
            return true;
    }

    return false;
}