TurboJet.cpp

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/*
    This source file is part of Rigs of Rods
    Copyright 2005-2012 Pierre-Michel Ricordel
    Copyright 2007-2012 Thomas Fischer
    Copyright 2017-2020 Petr Ohlidal
 
    For more information, see http://www.rigsofrods.org/
 
    Rigs of Rods is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 3, as
    published by the Free Software Foundation.
 
    Rigs of Rods 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.
 
    You should have received a copy of the GNU General Public License
    along with Rigs of Rods. If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "TurboJet.h"
 
#include <Ogre.h>
 
#include "Application.h"
#include "Actor.h"
#include "SimData.h"
#include "GfxActor.h"
#include "GfxScene.h"
#include "SoundScriptManager.h"
 
using namespace Ogre;
using namespace RoR;
 
Turbojet::Turbojet(ActorPtr actor, NodeNum_t tnodefront, NodeNum_t tnodeback, NodeNum_t tnoderef, RigDef::Turbojet & def)
{
    m_actor = actor;
#ifdef USE_OPENAL
    switch (actor->ar_num_aeroengines)
    {
    case 0:  m_sound_mod = SS_MOD_AEROENGINE1;  m_sound_src = SS_TRIG_AEROENGINE1;  m_sound_thr = SS_MOD_THROTTLE1;  m_sound_ab = SS_TRIG_AFTERBURNER1;  break;
    case 1:  m_sound_mod = SS_MOD_AEROENGINE2;  m_sound_src = SS_TRIG_AEROENGINE2;  m_sound_thr = SS_MOD_THROTTLE2;  m_sound_ab = SS_TRIG_AFTERBURNER2;  break;
    case 2:  m_sound_mod = SS_MOD_AEROENGINE3;  m_sound_src = SS_TRIG_AEROENGINE3;  m_sound_thr = SS_MOD_THROTTLE3;  m_sound_ab = SS_TRIG_AFTERBURNER3;  break;
    case 3:  m_sound_mod = SS_MOD_AEROENGINE4;  m_sound_src = SS_TRIG_AEROENGINE4;  m_sound_thr = SS_MOD_THROTTLE4;  m_sound_ab = SS_TRIG_AFTERBURNER4;  break;
    case 4:  m_sound_mod = SS_MOD_AEROENGINE5;  m_sound_src = SS_TRIG_AEROENGINE5;  m_sound_thr = SS_MOD_THROTTLE5;  m_sound_ab = SS_TRIG_AFTERBURNER5;  break;
    case 5:  m_sound_mod = SS_MOD_AEROENGINE6;  m_sound_src = SS_TRIG_AEROENGINE6;  m_sound_thr = SS_MOD_THROTTLE6;  m_sound_ab = SS_TRIG_AFTERBURNER6;  break;
    case 6:  m_sound_mod = SS_MOD_AEROENGINE7;  m_sound_src = SS_TRIG_AEROENGINE7;  m_sound_thr = SS_MOD_THROTTLE7;  m_sound_ab = SS_TRIG_AFTERBURNER7;  break;
    case 7:  m_sound_mod = SS_MOD_AEROENGINE8;  m_sound_src = SS_TRIG_AEROENGINE8;  m_sound_thr = SS_MOD_THROTTLE8;  m_sound_ab = SS_TRIG_AFTERBURNER8;  break;
    default: m_sound_mod = SS_MOD_NONE;         m_sound_src = SS_TRIG_NONE;         m_sound_thr = SS_MOD_NONE;       m_sound_ab = SS_TRIG_NONE;
    }
#endif
    m_node_back = tnodeback;
    m_node_front = tnodefront;
    m_node_ref = tnoderef;
    tjet_afterburnable = (def.wet_thrust > 0.f);
    m_reversable = def.is_reversable != 0;
    m_max_dry_thrust = def.dry_thrust;
    m_afterburn_thrust = def.wet_thrust;
    m_afterburner_active = false;
    m_timer = 0;
    m_warmup_time = 15.0;
    m_last_flip = 0;
    m_radius = def.back_diameter / 2.f;
    m_area = 2 * 3.14159 * m_radius * 0.6 * m_radius * 0.6;
    m_exhaust_velocity = 0;
    m_axis = m_actor->ar_nodes[m_node_front].RelPosition - m_actor->ar_nodes[m_node_back].RelPosition;
    m_reflen = m_axis.length();
    m_axis = m_axis / m_reflen;
    reset();
}
 
void TurbojetVisual::SetupVisuals(RigDef::Turbojet & def, int num, std::string const& propname, Ogre::Entity* nozzle, Ogre::Entity* afterburner_flame)
{
    m_radius = def.back_diameter / 2.0;
    m_number = num;
 
    m_nozzle_entity = nozzle;
    m_nozzle_scenenode = App::GetGfxScene()->GetSceneManager()->getRootSceneNode()->createChildSceneNode();
    m_nozzle_scenenode->attachObject(m_nozzle_entity);
    m_nozzle_scenenode->setScale(def.nozzle_length, def.back_diameter, def.back_diameter);
 
    if (afterburner_flame != nullptr)
    {
        m_flame_entity = afterburner_flame;
        m_flame_scenenode = App::GetGfxScene()->GetSceneManager()->getRootSceneNode()->createChildSceneNode();
        m_flame_scenenode->attachObject(m_flame_entity);
        m_flame_scenenode->setScale(1.0, def.back_diameter, def.back_diameter);
        m_flame_scenenode->setVisible(false);
    }
 
    //smoke visual
    m_smoke_scenenode = App::GetGfxScene()->GetSceneManager()->getRootSceneNode()->createChildSceneNode();
    m_smoke_particle = App::GetGfxScene()->GetSceneManager()->createParticleSystem("SmokeParticle-"+propname, "tracks/TurbopropSmoke");
    if (m_smoke_particle)
    {
        m_smoke_particle->setVisibilityFlags(DEPTHMAP_DISABLED); // disable particles in depthmap
        m_smoke_scenenode->attachObject(m_smoke_particle);
        m_smoke_particle->setCastShadows(false);
    }
    
}
 
void TurbojetVisual::SetNodes(NodeNum_t front, NodeNum_t back, NodeNum_t ref)
{
    ROR_ASSERT(front != NODENUM_INVALID);
    ROR_ASSERT(back != NODENUM_INVALID);
 
    m_node_front = front;
    m_node_back  = back;
    m_node_ref   = ref;
}
 
Turbojet::~Turbojet()
{
    //A fast work around 
    //
    SOUND_MODULATE(m_actor, m_sound_thr, 0);
    SOUND_MODULATE(m_actor, m_sound_mod, 0);
    SOUND_STOP(m_actor, m_sound_ab);
    SOUND_STOP(m_actor, m_sound_src);
}
 
TurbojetVisual::~TurbojetVisual()
{
    if (m_flame_entity != nullptr)
    {
        m_flame_entity->setVisible(false);
    }
 
    if (m_nozzle_entity != nullptr)
    {
        m_nozzle_entity->setVisible(false);
    }
 
    if (m_smoke_particle != nullptr)
    {
        m_smoke_particle->removeAllEmitters();
    }
}
 
void Turbojet::updateVisuals(RoR::GfxActor* gfx_actor)
{
    if (this->tjet_visual.IsVisible())
        this->tjet_visual.UpdateVisuals(gfx_actor);
}
 
void Turbojet::setVisible(bool visible)
{
    this->tjet_visual.SetVisible(visible);
}
 
void TurbojetVisual::UpdateVisuals(RoR::GfxActor* gfx_actor)
{
    RoR::NodeSB* node_buf = gfx_actor->GetSimNodeBuffer();
    RoR::AeroEngineSB& ae_buf
        = gfx_actor->GetSimDataBuffer().simbuf_aeroengines.at(m_number);
 
    //nozzle
    m_nozzle_scenenode->setPosition(node_buf[m_node_back].AbsPosition);
    //build a local system
    Vector3 laxis = node_buf[m_node_front].AbsPosition - node_buf[m_node_back].AbsPosition;
    laxis.normalise();
    Vector3 paxis = Plane(laxis, 0).projectVector(node_buf[m_node_ref].AbsPosition - node_buf[m_node_back].AbsPosition);
    paxis.normalise();
    Vector3 taxis = laxis.crossProduct(paxis);
    Quaternion dir = Quaternion(laxis, paxis, taxis);
    m_nozzle_scenenode->setOrientation(dir);
    //afterburner
    if (ae_buf.simbuf_tj_afterburn)
    {
        m_flame_scenenode->setVisible(true);
        float flamelength = (ae_buf.simbuf_tj_ab_thrust / 15.0) * (ae_buf.simbuf_ae_rpmpc / 100.0);
        flamelength = flamelength * (1.0 + (((Real)rand() / (Real)RAND_MAX) - 0.5) / 10.0);
        m_flame_scenenode->setScale(flamelength, m_radius * 2.0, m_radius * 2.0);
        m_flame_scenenode->setPosition(node_buf[m_node_back].AbsPosition + dir * Vector3(-0.2, 0.0, 0.0));
        m_flame_scenenode->setOrientation(dir);
    }
    else
        m_flame_scenenode->setVisible(false);
 
    //smoke
    if (m_smoke_particle &&
        gfx_actor->GetSimDataBuffer().simbuf_smoke_enabled)
    {
        App::GetGfxScene()->AdjustParticleSystemTimeFactor(m_smoke_particle);
        m_smoke_scenenode->setPosition(node_buf[m_node_back].AbsPosition);
        ParticleEmitter* emit = m_smoke_particle->getEmitter(0);
        emit->setDirection(-laxis);
        emit->setParticleVelocity(ae_buf.simbuf_tj_exhaust_velo);
        if (!ae_buf.simbuf_ae_failed)
        {
            if (ae_buf.simbuf_ae_ignition)
            {
                emit->setEnabled(true);
                emit->setColour(ColourValue(0.0, 0.0, 0.0, 0.02 + ae_buf.simbuf_ae_throttle * 0.03));
                emit->setTimeToLive((0.02 + ae_buf.simbuf_ae_throttle * 0.03) / 0.1);
            }
            else
            {
                emit->setEnabled(false);
            }
        }
        else
        {
            emit->setDirection(Vector3(0, 1, 0));
            emit->setParticleVelocity(7.0);
            emit->setEnabled(true);
            emit->setColour(ColourValue(0.0, 0.0, 0.0, 0.1));
            emit->setTimeToLive(0.1 / 0.1);
        }
    }
}
 
void TurbojetVisual::SetVisible(bool visible)
{
    m_visible = visible;
    m_smoke_particle->setVisible(visible);
    m_nozzle_scenenode->setVisible(visible);
    if (!visible)
    {
        // only hide, regular update will restore visibility if needed.
        m_flame_scenenode->setVisible(false);
    }
}
 
void Turbojet::updateForces(float dt, int doUpdate)
{
    if (doUpdate)
    {
        SOUND_MODULATE(m_actor, m_sound_mod, m_rpm_percent);
    }
    m_timer += dt;
    m_axis = m_actor->ar_nodes[m_node_front].RelPosition - m_actor->ar_nodes[m_node_back].RelPosition;
    float axlen = m_axis.length();
    m_axis = m_axis / axlen; //normalize
    if (fabs(m_reflen - axlen) > 0.1)
    {
        m_rpm_percent = 0;
        m_is_failed = true;
    }; //check for broken
 
    float warmupfactor = 1.0;
    if (m_warmup)
    {
        warmupfactor = (m_timer - m_warmup_start) / m_warmup_time;
        if (warmupfactor >= 1.0)
            m_warmup = false;
    }
 
    //turbine RPM
    //braking (compression)
    if (m_rpm_percent < 0)
        m_rpm_percent = 0;
    float torque = -m_rpm_percent / 100.0;
    //powering with limiter
    if (m_rpm_percent < 100.0 && !m_is_failed && m_ignition)
        torque += ((0.2 + m_throtle * 0.8) * warmupfactor);
    //integration
    m_rpm_percent += (double)dt * torque * 30.0;
 
    float enginethrust = 0;
    if (!m_is_failed && m_ignition)
    {
        enginethrust = m_max_dry_thrust * m_rpm_percent / 100.0;
        m_afterburner_active = (tjet_afterburnable && m_throtle > 0.95 && m_rpm_percent > 80);
        if (m_afterburner_active)
            enginethrust += (m_afterburn_thrust - m_max_dry_thrust);
    }
    else
        m_afterburner_active = false;
 
    if (m_afterburner_active)
        SOUND_START(m_actor, m_sound_ab);
    else
        SOUND_STOP(m_actor, m_sound_ab);
 
    if (m_reverse)
        m_actor->ar_nodes[m_node_back].Forces -= (enginethrust * 1000.0) * m_axis;
    else
        m_actor->ar_nodes[m_node_back].Forces += (enginethrust * 1000.0) * m_axis;
 
    m_exhaust_velocity = enginethrust * 5.6 / m_area;
}
 
void Turbojet::setThrottle(float val)
{
    if (val > 1.0)
        val = 1.0;
 
    if (val < 0.0)
        val = 0.0;
 
    m_throtle = val;
    SOUND_MODULATE(m_actor, m_sound_thr, val);
}
 
float Turbojet::getThrottle()
{
    return m_throtle;
}
 
void Turbojet::setRPM(float _rpm)
{
    m_rpm_percent = _rpm;
}
 
void Turbojet::reset()
{
    m_rpm_percent = 0;
    m_throtle = 0;
    m_propwash = 0;
    m_is_failed = false;
    m_ignition = false;
    m_reverse = false;
}
 
void Turbojet::toggleReverse()
{
    if (!m_reversable)
        return;
    m_throtle = 0;
    m_reverse = !m_reverse;
}
 
void Turbojet::setReverse(bool val)
{
    m_reverse = val;
}
 
void Turbojet::flipStart()
{
    if (m_timer - m_last_flip < 0.3)
        return;
    m_ignition = !m_ignition;
    if (m_ignition && !m_is_failed)
    {
        m_warmup = true;
        m_warmup_start = m_timer;
        SOUND_START(m_actor, m_sound_src);
    }
    else
    {
        SOUND_STOP(m_actor, m_sound_src);
    }
 
    m_last_flip = m_timer;
}