source: orxonox.OLD/branches/atmospheric_engine/src/lib/graphics/effects/rain_effect.cc @ 7976

/*
   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: hdavid, amaechler
*/

#include "rain_effect.h"

#include "util/loading/load_param.h"
#include "util/loading/factory.h"
#include "util/loading/resource_manager.h"

#include "glincl.h"
#include "p_node.h"
#include "state.h"
#include "spark_particles.h"
#include "plane_emitter.h"
#include "shell_command.h"

#include "parser/tinyxml/tinyxml.h"

SHELL_COMMAND(activate, RainEffect, activateRain);
SHELL_COMMAND(deactivate, RainEffect, deactivateRain);

using namespace std;

CREATE_FACTORY(RainEffect, CL_RAIN_EFFECT);

// TODO: Dim Light with Rain, Finish preCaching, check out if multiple rain emitters work

RainEffect::RainEffect(const TiXmlElement* root)
{
        this->setClassID(CL_RAIN_EFFECT, "RainEffect");

        this->init();

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

        //load rain sound
        if (this->rainBuffer != NULL)
                ResourceManager::getInstance()->unload(this->rainBuffer);
        this->rainBuffer = (OrxSound::SoundBuffer*)ResourceManager::getInstance()->load("sound/rain.wav", WAV);

        //load wind sound
        if (this->rainWindForce > 0) {
                if (this->windBuffer != NULL)
                        ResourceManager::getInstance()->unload(this->windBuffer);
                this->windBuffer = (OrxSound::SoundBuffer*)ResourceManager::getInstance()->load("sound/wind.wav", WAV);
        }

        this->activate();
}

RainEffect::~RainEffect()
{
        this->deactivate();

        if (this->rainBuffer != NULL)
                ResourceManager::getInstance()->unload(this->rainBuffer);

        if (this->windBuffer != NULL)
                ResourceManager::getInstance()->unload(this->windBuffer);
}

void RainEffect::loadParams(const TiXmlElement* root)
{
        WeatherEffect::loadParams(root);

        LoadParam(root, "coord", this, RainEffect, setRainCoord);
        LoadParam(root, "size", this, RainEffect, setRainSize);
        LoadParam(root, "rate", this, RainEffect, setRainRate);
        LoadParam(root, "velocity", this, RainEffect, setRainVelocity);
        LoadParam(root, "life", this, RainEffect, setRainLife);
        LoadParam(root, "wind", this, RainEffect, setRainWind);
        LoadParam(root, "option", this, RainEffect, setRainOption);
}


bool RainEffect::init()
{
        //Default values
        this->rainCoord = Vector(500, 500, 500);
        this->rainSize = Vector2D(1000, 1000);
        this->rainRate = 3000;
        this->rainVelocity = -300;
        this->rainLife = 4;
        this->rainMaxParticles = this->rainRate * this->rainLife;
        this->rainWindForce  = 0;

        this->emitter = new PlaneEmitter(this->rainSize);
}


SparkParticles* RainEffect::rainParticles = NULL;

bool RainEffect::activate()
{
        PRINTF(0)( "Activating RainEffect, coord: %f, %f, %f, size: %f, %f, rate: %f, velocity: %f, moveRain: %s\n", this->rainCoord.x, this->rainCoord.y, this->rainCoord.z, this->rainSize.x, this-> rainSize.y, this->rainRate, this->rainVelocity, this->rainMove ? "true" : "false" );

        if (unlikely(RainEffect::rainParticles == NULL))
        {
                RainEffect::rainParticles = new SparkParticles((int) this->rainMaxParticles);
                RainEffect::rainParticles->setName("RainParticles");
                RainEffect::rainParticles->precache((int)this->rainLife);
                RainEffect::rainParticles->setLifeSpan(this->rainLife, 2);
                RainEffect::rainParticles->setRadius(0, 0.03);
                RainEffect::rainParticles->setRadius(0.2, 0.02);
                RainEffect::rainParticles->setRadius(1, 0.01);
                RainEffect::rainParticles->setColor(0, 0.3, 0.3, 0.5, 0.2); // grey blue 1
                RainEffect::rainParticles->setColor(0.5, 0.4, 0.4, 0.5, 0.2); // grey blue 2
                RainEffect::rainParticles->setColor(1, 0.7, 0.7, 0.7, 0.2); // light grey
        }

        this->emitter->setSystem(RainEffect::rainParticles);

        this->emitter->setRelCoor(this->rainCoord);

        this->emitter->setEmissionRate(this->rainRate);
        this->emitter->setEmissionVelocity(this->rainVelocity);

        this->emitter->setSpread(this->rainWindForce / 50, 0.2);
        
        this->soundSource.loop(this->rainBuffer);
        if (this->rainWindForce > 0)
                this->soundSource.loop(this->windBuffer);
}


bool RainEffect::deactivate()
{
        PRINTF(0)("Deactivating RainEffect\n");
        this->emitter->setSystem(NULL);

        this->soundSource.stop();
}

void RainEffect::activateRain()
{
        this->activate();
}

void RainEffect::deactivateRain()
{
        this->deactivate();
}


void RainEffect::tick (float dt)
{
        if (this->rainMove) {
                this->rainCoord = State::getCameraNode()->getAbsCoor();
                this->emitter->setRelCoor(this->rainCoord.x , this->rainCoord.y+800, this->rainCoord.z);
        }
}