// * This file is part of the COLOBOT source code
// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * 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 3 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.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program. If not, see  http://www.gnu.org/licenses/.


#include "graphics/engine/pyro.h"

#include "app/app.h"

#include "common/iman.h"
#include "common/logger.h"

#include "graphics/engine/lightman.h"
#include "graphics/engine/particle.h"
#include "graphics/engine/terrain.h"

#include "math/geometry.h"

#include "object/robotmain.h"
#include "object/motion/motionhuman.h"


// Graphics module namespace
namespace Gfx {


CPyro::CPyro()
{
    CInstanceManager::GetInstancePointer()->AddInstance(CLASS_PYRO, this, 100);

    m_engine      = CEngine::GetInstancePointer();
    m_main        = CRobotMain::GetInstancePointer();
    m_terrain     = m_main->GetTerrain();
    m_camera      = m_main->GetCamera();
    m_particle    = m_engine->GetParticle();
    m_lightMan    = m_engine->GetLightManager();
    m_sound       = CApplication::GetInstancePointer()->GetSound();
    m_object      = nullptr;

    m_progress = 0.0f;
    m_speed = 0.0f;
    m_lightRank = -1;
    m_soundChannel = -1;
    LightOperFlush();
}

CPyro::~CPyro()
{
    CInstanceManager::GetInstancePointer()->DeleteInstance(CLASS_PYRO, this);
}

void CPyro::DeleteObject()
{
    if ( m_lightRank != -1 )
    {
        m_lightMan->DeleteLight(m_lightRank);
        m_lightRank = -1;
    }
}

bool CPyro::Create(PyroType type, CObject* obj, float force)
{
    m_object = obj;
    m_force = force;

    ObjectType oType = obj->GetType();
    int objRank = obj->GetObjectRank(0);
    if (objRank == -1) return false;

    Math::Vector min, max;
    m_engine->GetObjectBBox(objRank, min, max);
    Math::Vector pos = obj->GetPosition(0);

    DisplayError(type, obj);  // displays eventual messages

    {
        int i = 0;
        // Copies all spheres of the object.
        for (; i < 50; i++)
        {
            if ( !obj->GetCrashSphere(i, m_crashSpherePos[i], m_crashSphereRadius[i]) )  break;
        }
        m_crashSphereUsed = i;
    }

    // Calculates the size of the effect.
    if ( oType == OBJECT_ANT    ||
         oType == OBJECT_BEE    ||
         oType == OBJECT_WORM   ||
         oType == OBJECT_SPIDER )
    {
        m_size = 40.0f;
    }
    else
    {
        m_size = Math::Distance(min, max)*2.0f;
        if ( m_size <  4.0f )  m_size =  4.0f;
        if ( m_size > 80.0f )  m_size = 80.0f;
    }
    if ( oType == OBJECT_TNT  ||
         oType == OBJECT_BOMB )
    {
        m_size *= 2.0f;
    }

    m_pos = pos+(min+max)/2.0f;
    m_type = type;
    m_progress = 0.0f;
    m_speed = 1.0f/20.0f;    m_time = 0.0f;
    m_lastParticle = 0.0f;
    m_lastParticleSmoke = 0.0f;
    m_lightRank = -1;

    if ( oType == OBJECT_TEEN28 ||
         oType == OBJECT_TEEN31 )
    {
        m_pos.y = pos.y+1.0f;
    }

    // Seeking the position of the battery.
    CObject* power = obj->GetPower();
    if ( power == nullptr )
    {
        m_power = false;
    }
    else
    {
        m_power = true;
        pos = power->GetPosition(0);
        pos.y += 1.0f;
        Math::Matrix* mat = obj->GetWorldMatrix(0);
        m_posPower = Math::Transform(*mat, pos);
    }
    if ( oType == OBJECT_POWER   ||
         oType == OBJECT_ATOMIC  ||
         oType == OBJECT_URANIUM ||
         oType == OBJECT_TNT     ||
         oType == OBJECT_BOMB    )
    {
        m_power = true;
        m_posPower = m_pos;
        m_posPower.y += 1.0f;
        m_pos = m_posPower;
    }
    if ( oType == OBJECT_STATION )
    {
        m_power = true;
        Math::Matrix* mat = obj->GetWorldMatrix(0);
        m_posPower = Math::Transform(*mat, Math::Vector(-15.0f, 7.0f, 0.0f));
        m_pos = m_posPower;
    }
    if ( oType == OBJECT_ENERGY )
    {
        m_power = true;
        Math::Matrix* mat = obj->GetWorldMatrix(0);
        m_posPower = Math::Transform(*mat, Math::Vector(-7.0f, 6.0f, 0.0f));
        m_pos = m_posPower;
    }
    if ( oType == OBJECT_NUCLEAR )
    {
        m_power = true;
        m_posPower = m_pos;
    }
    if ( oType == OBJECT_PARA )
    {
        m_power = true;
        m_posPower = m_pos;
    }
    if ( oType == OBJECT_SCRAP4 ||
         oType == OBJECT_SCRAP5 )  // plastic material?
    {
        m_power = true;
        m_posPower = m_pos;
    }

    // Plays the sound of a pyrotechnic effect.
    if ( type == PT_FRAGT  ||
         type == PT_FRAGW  ||
         type == PT_EXPLOT ||
         type == PT_EXPLOW )
    {
        Sound sound;
        if ( m_power )
        {
            sound = SOUND_EXPLOp;
        }
        else
        {
            sound = SOUND_EXPLO;
        }
        if ( oType == OBJECT_STONE   ||
             oType == OBJECT_METAL   ||
             oType == OBJECT_BULLET  ||
             oType == OBJECT_BBOX    ||
             oType == OBJECT_KEYa    ||
             oType == OBJECT_KEYb    ||
             oType == OBJECT_KEYc    ||
             oType == OBJECT_KEYd    )
        {
            sound = SOUND_EXPLOl;
        }
        if ( oType == OBJECT_URANIUM ||
             oType == OBJECT_POWER   ||
             oType == OBJECT_ATOMIC  ||
             oType == OBJECT_TNT     ||
             oType == OBJECT_BOMB    )
        {
            sound = SOUND_EXPLOlp;
        }
        m_sound->Play(sound, m_pos);
    }
    if ( type == PT_FRAGO  ||
         type == PT_EXPLOO ||
         type == PT_SPIDER ||
         type == PT_SHOTM  )
    {
        m_sound->Play(SOUND_EXPLOi, m_pos);
    }
    if ( type == PT_BURNT ||
         type == PT_BURNO )
    {
        m_soundChannel = m_sound->Play(SOUND_BURN, m_pos, 1.0f, 1.0f, true);
        m_sound->AddEnvelope(m_soundChannel, 1.0f, 1.0f, 12.0f, SOPER_CONTINUE);
        m_sound->AddEnvelope(m_soundChannel, 0.0f, 1.0f,  5.0f, SOPER_STOP);
    }
    if ( type == PT_BURNO )
    {
        m_sound->Play(SOUND_DEADi, m_pos);
        m_sound->Play(SOUND_DEADi, m_engine->GetEyePt());
    }
    if ( type == PT_EGG )
    {
        m_sound->Play(SOUND_EGG, m_pos);
    }
    if ( type == PT_WPCHECK  ||
         type == PT_FLCREATE ||
         type == PT_FLDELETE )
    {
        m_sound->Play(SOUND_WAYPOINT, m_pos);
    }
    if ( oType == OBJECT_HUMAN )
    {
        if ( type == PT_DEADG )
        {
            m_sound->Play(SOUND_DEADg, m_pos);
        }
        if ( type == PT_DEADW )
        {
            m_sound->Play(SOUND_DEADw, m_pos);
        }
        if ( type == PT_SHOTH && m_object->GetSelect() )
        {
            m_sound->Play(SOUND_AIE, m_pos);
            m_sound->Play(SOUND_AIE, m_engine->GetEyePt());
        }
    }

    if ( m_type == PT_FRAGT ||
         m_type == PT_FRAGO ||
         m_type == PT_FRAGW )
    {
        m_engine->DeleteShadow(m_object->GetObjectRank(0));
    }

    if ( m_type == PT_DEADG )
    {
        m_object->SetDead(true);

        CMotion* motion = m_object->GetMotion();
        if (motion != nullptr)
            motion->SetAction(MHS_DEADg, 1.0f);

        m_camera->StartCentering(m_object, Math::PI*0.5f, 99.9f, 0.0f, 1.5f);
        m_camera->StartOver(CAM_OVER_EFFECT_FADEOUT_WHITE, m_pos, 1.0f);
        m_speed = 1.0f/10.0f;
        return true;
    }
    if ( m_type == PT_DEADW )
    {
        m_object->SetDead(true);

        CMotion* motion = m_object->GetMotion();
        if ( motion != nullptr )
        {
            motion->SetAction(MHS_DEADw, 4.0f);
        }
        m_camera->StartCentering(m_object, Math::PI*0.5f, 99.9f, 0.0f, 3.0f);
        m_camera->StartOver(CAM_OVER_EFFECT_FADEOUT_BLACK, m_pos, 1.0f);
        m_speed = 1.0f/10.0f;
        return true;
    }

    if ( m_type == PT_SHOTT ||
         m_type == PT_SHOTM )
    {
        m_camera->StartEffect(CAM_EFFECT_SHOT, m_pos, force);
        m_speed = 1.0f/1.0f;
        return true;
    }
    if ( m_type == PT_SHOTH )
    {
        if ( m_object->GetSelect() )
        {
            m_camera->StartOver(CAM_OVER_EFFECT_BLOOD, m_pos, force);
        }
        m_speed = 1.0f/0.2f;
        return true;
    }

    if ( m_type == PT_SHOTW )
    {
        m_speed = 1.0f/1.0f;
    }

    if ( m_type == PT_BURNT )
    {
        BurnStart();
    }

    if ( m_type == PT_WPCHECK )
    {
        m_speed = 1.0f/8.0f;
        m_object->SetEnable(false);  // object more functional
    }
    if ( m_type == PT_FLCREATE )
    {
        m_speed = 1.0f/2.0f;
    }
    if ( m_type == PT_FLDELETE )
    {
        m_speed = 1.0f/2.0f;
        m_object->SetEnable(false);  // object more functional
    }
    if ( m_type == PT_RESET )
    {
        m_speed = 1.0f/2.0f;
        m_object->SetPosition(0, m_object->GetResetPosition());
        m_object->SetAngle(0, m_object->GetResetAngle());
        m_object->SetZoom(0, 0.0f);
    }
    if ( m_type == PT_FINDING )
    {
        float limit = (m_size-1.0f)/4.0f;
        if (limit > 8.0f) limit = 8.0f;
        if (oType == OBJECT_APOLLO2) limit = 2.0f;
        m_speed = 1.0f/limit;
    }

    if ( m_type == PT_EXPLOT ||
         m_type == PT_EXPLOO ||
         m_type == PT_EXPLOW )
    {
        CreateTriangle(obj, oType, 0);
        m_engine->DeleteShadow(m_object->GetObjectRank(0));
        ExploStart();
    }

    if ( m_type == PT_FALL )
    {
        FallStart();
        return true;
    }

    if ( m_type == PT_BURNT ||
         m_type == PT_BURNO )
    {
        m_speed = 1.0f/15.0f;

        LightOperAdd(0.00f, 0.0f,  2.0f,  1.0f,  0.0f);  // red-orange
        LightOperAdd(0.30f, 1.0f, -0.8f, -0.8f, -0.8f);  // dark gray
        LightOperAdd(0.80f, 1.0f, -0.8f, -0.8f, -0.8f);  // dark gray
        LightOperAdd(1.00f, 0.0f, -0.8f, -0.8f, -0.8f);  // dark gray
        CreateLight(m_pos, 40.0f);
        return true;
    }

    if ( m_type == PT_SPIDER )
    {
        m_speed = 1.0f/15.0f;

        pos = Math::Vector(-3.0f, 2.0f, 0.0f);
        Math::Matrix* mat = obj->GetWorldMatrix(0);
        m_pos = Math::Transform(*mat, pos);

        m_engine->DeleteShadow(m_object->GetObjectRank(0));
    }

    if ( m_type != PT_EGG  &&
         m_type != PT_WIN  &&
         m_type != PT_LOST )
    {
        float h = 40.0f;
        if ( m_type == PT_FRAGO  ||
             m_type == PT_EXPLOO )
        {
            LightOperAdd(0.00f, 0.0f, -1.0f, -0.5f, -1.0f);  // dark green
            LightOperAdd(0.05f, 1.0f, -1.0f, -0.5f, -1.0f);  // dark green
            LightOperAdd(1.00f, 0.0f, -1.0f, -0.5f, -1.0f);  // dark green
        }
        else if ( m_type == PT_FRAGT  ||
                  m_type == PT_EXPLOT )
        {
            LightOperAdd(0.00f, 1.0f,  4.0f,  4.0f,  2.0f);  // yellow
            LightOperAdd(0.02f, 1.0f,  4.0f,  2.0f,  0.0f);  // red-orange
            LightOperAdd(0.16f, 1.0f, -0.8f, -0.8f, -0.8f);  // dark gray
            LightOperAdd(1.00f, 0.0f, -0.8f, -0.8f, -0.8f);  // dark gray
            h = m_size*2.0f;
        }
        else if ( m_type == PT_SPIDER )
        {
            LightOperAdd(0.00f, 0.0f, -0.5f, -1.0f, -1.0f);  // dark red
            LightOperAdd(0.05f, 1.0f, -0.5f, -1.0f, -1.0f);  // dark red
            LightOperAdd(1.00f, 0.0f, -0.5f, -1.0f, -1.0f);  // dark red
        }
        else if ( m_type == PT_FRAGW  ||
                  m_type == PT_EXPLOW ||
                  m_type == PT_SHOTW  )
        {
            LightOperAdd(0.00f, 0.0f, -0.5f, -0.5f, -1.0f);  // dark yellow
            LightOperAdd(0.05f, 1.0f, -0.5f, -0.5f, -1.0f);  // dark yellow
            LightOperAdd(1.00f, 0.0f, -0.5f, -0.5f, -1.0f);  // dark yellow
        }
        else if ( m_type == PT_WPCHECK  ||
                  m_type == PT_FLCREATE ||
                  m_type == PT_FLDELETE ||
                  m_type == PT_RESET    ||
                  m_type == PT_FINDING  )
        {
            LightOperAdd(0.00f, 1.0f,  4.0f,  4.0f,  2.0f);  // yellow
            LightOperAdd(1.00f, 0.0f,  4.0f,  4.0f,  2.0f);  // yellow
        }
        else
        {
            LightOperAdd(0.00f, 0.0f, -0.8f, -0.8f, -0.8f);  // dark gray
            LightOperAdd(0.05f, 1.0f, -0.8f, -0.8f, -0.8f);  // dark gray
            LightOperAdd(1.00f, 0.0f, -0.8f, -0.8f, -0.8f);  // dark gray
        }
        CreateLight(m_pos, h);

        if ( m_type != PT_SHOTW    &&
             m_type != PT_WPCHECK  &&
             m_type != PT_FLCREATE &&
             m_type != PT_FLDELETE &&
             m_type != PT_RESET    &&
             m_type != PT_FINDING  )
        {
            m_camera->StartEffect(CAM_EFFECT_EXPLO, m_pos, force);
        }
    }

    if ( m_type == PT_SHOTW )  return true;

    // Generates the triangles of the explosion.
    if ( m_type == PT_FRAGT  ||
         m_type == PT_FRAGO  ||
         m_type == PT_FRAGW  ||
         m_type == PT_SPIDER ||
         m_type == PT_EGG    ||
        (m_type == PT_EXPLOT && oType == OBJECT_MOBILEtg) ||
        (m_type == PT_EXPLOT && oType == OBJECT_TEEN28  ) ||
        (m_type == PT_EXPLOT && oType == OBJECT_TEEN31  ) )
    {
        for (int part = 0; part < OBJECTMAXPART; part++)
        {
            CreateTriangle(obj, oType, part);
        }
    }

    if ( m_type == PT_FRAGT  ||
         m_type == PT_EXPLOT )
    {
        if ( m_power )
        {
            int total = static_cast<int>(10.0f*m_engine->GetParticleDensity());
            if ( oType == OBJECT_TNT  ||
                 oType == OBJECT_BOMB )  total *= 3;
            for (int i = 0; i < total; i++)
            {
                pos = m_posPower;
                Math::Vector speed;
                speed.x = (Math::Rand()-0.5f)*30.0f;
                speed.z = (Math::Rand()-0.5f)*30.0f;
                speed.y = Math::Rand()*30.0f;
                Math::Point dim;
                dim.x = 1.0f;
                dim.y = dim.x;
                float duration = Math::Rand()*3.0f+2.0f;
                float mass = Math::Rand()*10.0f+15.0f;
                m_particle->CreateTrack(pos, speed, dim, PARTITRACK1,
                                         duration, mass, Math::Rand()+0.7f, 1.0f);
            }
        }

        if (m_size > 10.0f)  // large enough (freight excluded)?
        {
            if (m_power)
            {
                pos = m_posPower;
            }
            else
            {
                pos = m_pos;
                m_terrain->AdjustToFloor(pos);
                pos.y += 1.0f;
            }
            Math::Point dim;
            dim.x = m_size*0.4f;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, Math::Vector(0.0f,0.0f,0.0f), dim, PARTISPHERE0, 2.0f, 0.0f, 0.0f);
        }
    }

    if ( m_type == PT_FRAGO  ||
         m_type == PT_EXPLOO )
    {
        int total = static_cast<int>(10.0f*m_engine->GetParticleDensity());
        for (int i = 0; i < total; i++)
        {
            pos = m_pos;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*30.0f;
            speed.z = (Math::Rand()-0.5f)*30.0f;
            speed.y = Math::Rand()*50.0f;
            Math::Point dim;
            dim.x = 1.0f;
            dim.y = dim.x;
            float duration = Math::Rand()*1.0f+0.8f;
            float mass = Math::Rand()*10.0f+15.0f;
            m_particle->CreateParticle(pos, speed, dim, PARTIORGANIC1,
                                         duration, mass);
        }
        total = static_cast<int>(5.0f*m_engine->GetParticleDensity());
        for (int i = 0; i < total; i++)
        {
            pos = m_pos;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*30.0f;
            speed.z = (Math::Rand()-0.5f)*30.0f;
            speed.y = Math::Rand()*50.0f;
            Math::Point dim;
            dim.x = 1.0f;
            dim.y = dim.x;
            float duration = Math::Rand()*2.0f+1.4f;
            float mass = Math::Rand()*10.0f+15.0f;
            m_particle->CreateTrack(pos, speed, dim, PARTITRACK4,
                                     duration, mass, duration*0.5f, dim.x*2.0f);
        }
    }

    if ( m_type == PT_SPIDER )
    {
        for (int i = 0; i < 50; i++)
        {
            pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*3.0f;
            pos.z += (Math::Rand()-0.5f)*3.0f;
            pos.y += (Math::Rand()-0.5f)*2.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*24.0f;
            speed.z = (Math::Rand()-0.5f)*24.0f;
            speed.y = 10.0f+Math::Rand()*10.0f;
            Math::Point dim;
            dim.x = 1.0f;
            dim.y = dim.x;
            int channel = m_particle->CreateParticle(pos, speed, dim, PARTIGUN3, 2.0f+Math::Rand()*2.0f, 10.0f);
            m_particle->SetObjectFather(channel, obj);
        }
        int total = static_cast<int>(10.0f*m_engine->GetParticleDensity());
        for (int i = 0; i < total; i++)
        {
            pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*3.0f;
            pos.z += (Math::Rand()-0.5f)*3.0f;
            pos.y += (Math::Rand()-0.5f)*2.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*24.0f;
            speed.z = (Math::Rand()-0.5f)*24.0f;
            speed.y = 7.0f+Math::Rand()*7.0f;
            Math::Point dim;
            dim.x = 1.0f;
            dim.y = dim.x;
            m_particle->CreateTrack(pos, speed, dim, PARTITRACK3,
                                    2.0f+Math::Rand()*2.0f, 10.0f, 2.0f, 0.6f);
        }
    }

    if ( type == PT_FRAGT  ||
         type == PT_FRAGW  ||
         type == PT_EXPLOT ||
         type == PT_EXPLOW )
    {
        if (m_size > 10.0f || m_power)
        {
            pos = m_pos;
            Math::Vector speed(0.0f, 0.0f, 0.0f);
            Math::Point dim;
            dim.x = m_size;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTICHOC, 2.0f);
        }
    }

    return true;
}

bool CPyro::EventProcess(const Event &event)
{
    if (event.type != EVENT_FRAME) return true;
    if (m_engine->GetPause()) return true;

    m_time += event.rTime;
    m_progress += event.rTime*m_speed;

    if (m_soundChannel != -1 && m_object != 0)
    {
        Math::Vector pos = m_object->GetPosition(0);
        m_sound->Position(m_soundChannel, pos);

        if (m_lightRank != -1)
        {
            pos.y += m_lightHeight;
            m_lightMan->SetLightPos(m_lightRank, pos);
        }
    }

    if ( m_type == PT_SHOTT &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        if ( m_crashSphereUsed > 0 )
        {
            int i = rand()%m_crashSphereUsed;
            Math::Vector pos = m_crashSpherePos[i];
            pos.x += (Math::Rand()-0.5f)*m_crashSphereRadius[i]*2.0f;
            pos.z += (Math::Rand()-0.5f)*m_crashSphereRadius[i]*2.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*m_crashSphereRadius[i]*0.5f;
            speed.z = (Math::Rand()-0.5f)*m_crashSphereRadius[i]*0.5f;
            speed.y = Math::Rand()*m_crashSphereRadius[i]*1.0f;
            Math::Point dim;
            dim.x = Math::Rand()*m_crashSphereRadius[i]*0.5f+m_crashSphereRadius[i]*0.75f*m_force;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTISMOKE1, 3.0f);
        }
        else
        {
            Math::Vector pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*m_size*0.3f;
            pos.z += (Math::Rand()-0.5f)*m_size*0.3f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*m_size*0.1f;
            speed.z = (Math::Rand()-0.5f)*m_size*0.1f;
            speed.y = Math::Rand()*m_size*0.2f;
            Math::Point dim;
            dim.x = Math::Rand()*m_size/10.0f+m_size/10.0f*m_force;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTISMOKE1, 3.0f);
        }
    }

    if ( m_type == PT_SHOTH &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        for (int i = 0; i < 10; i++)
        {
            Math::Vector pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*m_size*0.2f;
            pos.z += (Math::Rand()-0.5f)*m_size*0.2f;
            pos.y += (Math::Rand()-0.5f)*m_size*0.5f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*5.0f;
            speed.z = (Math::Rand()-0.5f)*5.0f;
            speed.y = Math::Rand()*1.0f;
            Math::Point dim;
            dim.x = 1.0f;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIBLOOD, Math::Rand()*3.0f+3.0f, Math::Rand()*10.0f+15.0f, 0.5f);
        }
    }

    if ( m_type == PT_SHOTM &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        int r = static_cast<int>(10.0f*m_engine->GetParticleDensity());
        for (int i = 0; i < r; i++)
        {
            Math::Vector pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*20.0f;
            pos.z += (Math::Rand()-0.5f)*20.0f;
            pos.y += 8.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*40.0f;
            speed.z = (Math::Rand()-0.5f)*40.0f;
            speed.y = Math::Rand()*40.0f;
            Math::Point dim;
            dim.x = Math::Rand()*8.0f+8.0f*m_force;
            dim.y = dim.x;

            m_particle->CreateParticle(pos, speed, dim, PARTIBLOODM, 2.0f, 50.0f, 0.0f);
        }
    }

    if ( m_type == PT_SHOTW &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        if ( m_crashSphereUsed > 0 )
        {
            int i = rand()%m_crashSphereUsed;
            Math::Vector pos = m_crashSpherePos[i];
            pos.x += (Math::Rand()-0.5f)*m_crashSphereRadius[i]*2.0f;
            pos.z += (Math::Rand()-0.5f)*m_crashSphereRadius[i]*2.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*m_crashSphereRadius[i]*0.5f;
            speed.z = (Math::Rand()-0.5f)*m_crashSphereRadius[i]*0.5f;
            speed.y = Math::Rand()*m_crashSphereRadius[i]*1.0f;
            Math::Point dim;
            dim.x = 1.0f*m_force;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIBLITZ, 0.5f, 0.0f, 0.0f);
        }
        else
        {
            Math::Vector pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*m_size*0.3f;
            pos.z += (Math::Rand()-0.5f)*m_size*0.3f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*m_size*0.1f;
            speed.z = (Math::Rand()-0.5f)*m_size*0.1f;
            speed.y = Math::Rand()*m_size*0.2f;
            Math::Point dim;
            dim.x = 1.0f*m_force;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIBLITZ, 0.5f, 0.0f, 0.0f);
        }
    }

    if ( m_type == PT_SHOTW &&
         m_lastParticleSmoke+m_engine->ParticleAdapt(0.10f) <= m_time )
    {
        m_lastParticleSmoke = m_time;

        Math::Vector pos = m_pos;
        pos.y -= 2.0f;
        pos.x += (Math::Rand()-0.5f)*4.0f;
        pos.z += (Math::Rand()-0.5f)*4.0f;
        Math::Vector speed;
        speed.x = 0.0f;
        speed.z = 0.0f;
        speed.y = 10.0f+Math::Rand()*10.0f;
        Math::Point dim;
        dim.x = Math::Rand()*2.5f+2.0f*m_force;
        dim.y = dim.x;
        m_particle->CreateParticle(pos, speed, dim, PARTICRASH, 4.0f);
    }

    if ( (m_type == PT_FRAGT || m_type == PT_EXPLOT) &&
         m_progress < 0.05f &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        Math::Vector pos = m_pos;
        Math::Vector speed;
        speed.x = (Math::Rand()-0.5f)*m_size*1.0f;
        speed.z = (Math::Rand()-0.5f)*m_size*1.0f;
        speed.y = Math::Rand()*m_size*0.50f;
        Math::Point dim;
        dim.x = Math::Rand()*m_size/5.0f+m_size/5.0f;
        dim.y = dim.x;

        m_particle->CreateParticle(pos, speed, dim, PARTIEXPLOT);
    }

    if ( (m_type == PT_FRAGT || m_type == PT_EXPLOT) &&
         m_progress < 0.10f &&
         m_lastParticleSmoke+m_engine->ParticleAdapt(0.10f) <= m_time )
    {
        m_lastParticleSmoke = m_time;

        Math::Point dim;
        dim.x = Math::Rand()*m_size/3.0f+m_size/3.0f;
        dim.y = dim.x;
        Math::Vector pos = m_pos;
        pos.x += (Math::Rand()-0.5f)*m_size*0.5f;
        pos.z += (Math::Rand()-0.5f)*m_size*0.5f;
        m_terrain->AdjustToFloor(pos);
        Math::Vector speed;
        speed.x = 0.0f;
        speed.z = 0.0f;
        speed.y = -dim.x/2.0f/4.0f;
        pos.y += dim.x/2.0f;

        ParticleType type;
        int r = rand()%2;
        if (r == 0) type = PARTISMOKE1;
        if (r == 1) type = PARTISMOKE2;
        m_particle->CreateParticle(pos, speed, dim, type, 6.0f);
    }

    if ( (m_type == PT_FRAGO || m_type == PT_EXPLOO) &&
         m_progress < 0.03f &&
         m_lastParticle+m_engine->ParticleAdapt(0.1f) <= m_time )
    {
        m_lastParticle = m_time;

        Math::Vector pos = m_pos;
        Math::Vector speed;
        speed.x = (Math::Rand()-0.5f)*m_size*2.0f;
        speed.z = (Math::Rand()-0.5f)*m_size*2.0f;
        speed.y = Math::Rand()*m_size*1.0f;
        Math::Point dim;
        dim.x = Math::Rand()*m_size/2.0f+m_size/2.0f;
        dim.y = dim.x;

        m_particle->CreateParticle(pos, speed, dim, PARTIEXPLOO);
    }

    if ( (m_type == PT_FRAGW || m_type == PT_EXPLOW) &&
         m_progress < 0.05f &&
         m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticle = m_time;

        Math::Vector pos = m_pos;
        Math::Vector speed;
        speed.x = (Math::Rand()-0.5f)*m_size*1.0f;
        speed.z = (Math::Rand()-0.5f)*m_size*1.0f;
        speed.y = Math::Rand()*m_size*0.50f;
        Math::Point dim;
        dim.x = 1.0f;
        dim.y = dim.x;

        m_particle->CreateParticle(pos, speed, dim, PARTIBLITZ, 0.5f, 0.0f, 0.0f);
    }

    if ( (m_type == PT_FRAGW || m_type == PT_EXPLOW) &&
         m_progress < 0.25f &&
         m_lastParticleSmoke+m_engine->ParticleAdapt(0.05f) <= m_time )
    {
        m_lastParticleSmoke = m_time;

        Math::Vector pos = m_pos;
        pos.y -= 2.0f;
        pos.x += (Math::Rand()-0.5f)*4.0f;
        pos.z += (Math::Rand()-0.5f)*4.0f;
        Math::Vector speed;
        speed.x = 0.0f;
        speed.z = 0.0f;
        speed.y = 4.0f+Math::Rand()*4.0f;
        Math::Point dim;
        dim.x = Math::Rand()*2.5f+2.0f;
        dim.y = dim.x;
        m_particle->CreateParticle(pos, speed, dim, PARTICRASH, 4.0f);
    }

    if ( m_type == PT_WPCHECK )
    {
        float factor;
        if (m_progress < 0.25f)
            factor = 0.0f;
        else
            factor = powf((m_progress-0.25f)/0.75f, 2.0f)*30.0f;

        if ( m_progress < 0.85f &&
             m_lastParticle+m_engine->ParticleAdapt(0.10f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_pos;
            pos.y += factor;
            pos.x += (Math::Rand()-0.5f)*3.0f;
            pos.z += (Math::Rand()-0.5f)*3.0f;
            Math::Vector speed;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = 5.0f+Math::Rand()*5.0f;
            Math::Point dim;
            dim.x = Math::Rand()*1.5f+1.5f;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIGLINT, 2.0f);
        }

        Math::Vector angle = m_object->GetAngle(0);
        angle.y = m_progress*20.0f;
        angle.x = sinf(m_progress*49.0f)*0.3f;
        angle.z = sinf(m_progress*47.0f)*0.2f;
        m_object->SetAngle(0, angle);

        Math::Vector pos = m_pos;
        pos.y += factor;
        m_object->SetPosition(0, pos);

        if ( m_progress > 0.85f )
        {
            m_object->SetZoom(0, 1.0f-(m_progress-0.85f)/0.15f);
        }
    }

    if ( m_type == PT_FLCREATE )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_pos;
            m_terrain->AdjustToFloor(pos);
            pos.x += (Math::Rand()-0.5f)*1.0f;
            pos.z += (Math::Rand()-0.5f)*1.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*2.0f;
            speed.z = (Math::Rand()-0.5f)*2.0f;
            speed.y = 2.0f+Math::Rand()*2.0f;
            Math::Point dim;
            dim.x = (Math::Rand()*1.0f+1.0f)*(0.2f+m_progress*0.8f);
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIGLINT, 2.0f, 0.0f, 0.0f);
        }

        Math::Vector angle = m_object->GetAngle(0);
        angle.x = sinf(m_progress*49.0f)*0.3f*(1.0f-m_progress);
        angle.z = sinf(m_progress*47.0f)*0.2f*(1.0f-m_progress);
        m_object->SetAngle(0, angle);

        m_object->SetZoom(0, m_progress);
    }

    if ( m_type == PT_FLDELETE )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_pos;
            m_terrain->AdjustToFloor(pos);
            pos.x += (Math::Rand()-0.5f)*1.0f;
            pos.z += (Math::Rand()-0.5f)*1.0f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*2.0f;
            speed.z = (Math::Rand()-0.5f)*2.0f;
            speed.y = 2.0f+Math::Rand()*2.0f;
            Math::Point dim;
            dim.x = (Math::Rand()*1.0f+1.0f)*(0.2f+m_progress*0.8f);
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIGLINT, 2.0f, 0.0f, 0.5f);
        }

        Math::Vector angle = m_object->GetAngle(0);
        angle.y = m_progress*20.0f;
        angle.x = sinf(m_progress*49.0f)*0.3f;
        angle.z = sinf(m_progress*47.0f)*0.2f;
        m_object->SetAngle(0, angle);

        m_object->SetZoom(0, 1.0f-m_progress);
    }

    if ( m_type == PT_RESET )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_pos;
            pos.x += (Math::Rand()-0.5f)*5.0f;
            pos.z += (Math::Rand()-0.5f)*5.0f;
            Math::Vector speed;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = 5.0f+Math::Rand()*5.0f;
            Math::Point dim;
            dim.x = Math::Rand()*2.0f+2.0f;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIGLINTb, 2.0f);

            pos = m_pos;
            speed.x = (Math::Rand()-0.5f)*20.0f;
            speed.z = (Math::Rand()-0.5f)*20.0f;
            speed.y = Math::Rand()*10.0f;
            speed *= 0.5f+m_progress*0.5f;
            dim.x = 0.6f;
            dim.y = dim.x;
            pos.y += dim.y;
            float duration = Math::Rand()*1.5f+1.5f;
            m_particle->CreateTrack(pos, speed, dim, PARTITRACK6,
                                     duration, 0.0f,
                                     duration*0.9f, 0.7f);
        }

        Math::Vector angle = m_object->GetResetAngle();
        m_object->SetAngleY(0, angle.y-powf((1.0f-m_progress)*5.0f, 2.0f));
        m_object->SetZoom(0, m_progress);
    }

    if ( m_type == PT_FINDING )
    {
        if ( m_object != 0 &&
             m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            float factor = m_size*0.3f;
            if (m_object->GetType() == OBJECT_SAFE) factor *= 1.3f;
            if (factor > 40.0f) factor = 40.0f;
            Math::Vector pos = m_pos;
            m_terrain->AdjustToFloor(pos);
            pos.x += (Math::Rand()-0.5f)*factor;
            pos.z += (Math::Rand()-0.5f)*factor;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*2.0f;
            speed.z = (Math::Rand()-0.5f)*2.0f;
            speed.y = 4.0f+Math::Rand()*4.0f;
            Math::Point dim;
            dim.x = (Math::Rand()*3.0f+3.0f)*(1.0f-m_progress*0.9f);
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIGLINT, 2.0f, 0.0f, 0.5f);
        }
    }

    if ( (m_type == PT_BURNT || m_type == PT_BURNO) &&
         m_object != 0 )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            float factor = m_size/25.0f;  // 1 = standard size

            Math::Vector pos = m_object->GetPosition(0);
            pos.y -= m_object->GetCharacter()->height;
            pos.x += (Math::Rand()-0.5f)*(4.0f+8.0f*m_progress)*factor;
            pos.z += (Math::Rand()-0.5f)*(4.0f+8.0f*m_progress)*factor;
            Math::Vector speed;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = 0.0f;
            Math::Point dim;
            dim.x = (Math::Rand()*2.5f+1.0f)*factor;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIFLAME, 2.0f, 0.0f, 0.2f);

            pos = m_object->GetPosition(0);
            pos.y -= m_object->GetCharacter()->height;
            pos.x += (Math::Rand()-0.5f)*(2.0f+4.0f*m_progress)*factor;
            pos.z += (Math::Rand()-0.5f)*(2.0f+4.0f*m_progress)*factor;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = (Math::Rand()*5.0f*m_progress+3.0f)*factor;
            dim.x = (Math::Rand()*2.0f+1.0f)*factor;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTIFLAME, 2.0f, 0.0f, 0.2f);

            pos = m_object->GetPosition(0);
            pos.y -= 2.0f;
            pos.x += (Math::Rand()-0.5f)*5.0f*factor;
            pos.z += (Math::Rand()-0.5f)*5.0f*factor;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = (6.0f+Math::Rand()*6.0f+m_progress*6.0f)*factor;
            dim.x = (Math::Rand()*1.5f+1.0f+m_progress*3.0f)*factor;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTISMOKE3, 4.0f);
        }

        if ( m_type == PT_BURNT )
        {
            BurnProgress();
        }
        else
        {
            Math::Vector speed;
            speed.y = 0.0f;
            speed.x = (Math::Rand()-0.5f)*m_progress*1.0f;
            speed.z = (Math::Rand()-0.5f)*m_progress*1.0f;
            if ( m_progress > 0.8f )
            {
                float prog = (m_progress-0.8f)/0.2f;  // 0..1
                speed.y = -prog*6.0f;  // sinks into the ground
                m_object->SetZoom(0, 1.0f-prog*0.5f);
            }
            m_object->SetLinVibration(speed);
        }
    }

    if ( m_type == PT_WIN )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.05f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_object->GetPosition(0);
            pos.y += 1.5f;
            Math::Vector speed;
            speed.x = (Math::Rand()-0.5f)*10.0f;
            speed.z = (Math::Rand()-0.5f)*10.0f;
            speed.y = 8.0f+Math::Rand()*8.0f;
            Math::Point dim;
            dim.x = Math::Rand()*0.2f+0.2f;
            dim.y = dim.x;
            m_particle->CreateTrack(pos, speed, dim,
                                     static_cast<ParticleType>(PARTITRACK7+rand()%4),
                                     3.0f, 20.0f, 1.0f, 0.4f);
        }
    }

    if ( m_type == PT_LOST )
    {
        if ( m_lastParticle+m_engine->ParticleAdapt(0.10f) <= m_time )
        {
            m_lastParticle = m_time;

            Math::Vector pos = m_object->GetPosition(0);
            pos.y -= 2.0f;
            pos.x += (Math::Rand()-0.5f)*10.0f;
            pos.z += (Math::Rand()-0.5f)*10.0f;
            Math::Vector speed;
            speed.x = 0.0f;
            speed.z = 0.0f;
            speed.y = 1.0f+Math::Rand()*1.0f;
            Math::Point dim;
            dim.x = Math::Rand()*1.0f+1.0f;
            dim.y = dim.x;
            m_particle->CreateParticle(pos, speed, dim, PARTISMOKE1, 8.0f, 0.0f, 0.0f);
        }
    }

    if (m_type == PT_FALL)
        FallProgress(event.rTime);

    if (m_lightRank != -1)
        LightOperFrame(event.rTime);

    return true;
}

Error CPyro::IsEnded()
{
    // Destroys the object that exploded.
    //It should not be destroyed at the end of the Create,
    //because it is sometimes the object itself that makes the Create:
    //  pyro->Create(PT_FRAGT, this);
    if ( m_type == PT_FRAGT  ||
         m_type == PT_FRAGO  ||
         m_type == PT_FRAGW  ||
         m_type == PT_SPIDER ||
         m_type == PT_EGG    )
    {
        DeleteObject(true, true);
    }

    if ( m_type == PT_FALL )  // freight which grave?
    {
        return FallIsEnded();
    }

    if ( m_type == PT_WIN  ||
         m_type == PT_LOST )
    {
        return ERR_CONTINUE;
    }

    // End of the pyrotechnic effect?
    if ( m_progress < 1.0f )  return ERR_CONTINUE;

    if ( m_type == PT_EXPLOT ||
         m_type == PT_EXPLOO ||
         m_type == PT_EXPLOW )  // explosion?
    {
        ExploTerminate();
    }

    if ( m_type == PT_BURNT ||
         m_type == PT_BURNO )  // burning?
    {
        BurnTerminate();
    }

    if ( m_type == PT_WPCHECK  ||
         m_type == PT_FLDELETE )
    {
        DeleteObject(true, true);
    }

    if ( m_type == PT_FLCREATE )
    {
        m_object->SetAngleX(0, 0.0f);
        m_object->SetAngleZ(0, 0.0f);
        m_object->SetZoom(0, 1.0f);
    }

    if ( m_type == PT_RESET )
    {
        m_object->SetPosition(0, m_object->GetResetPosition());
        m_object->SetAngle(0, m_object->GetResetAngle());
        m_object->SetZoom(0, 1.0f);
    }

    if ( m_lightRank != -1 )
    {
        m_lightMan->DeleteLight(m_lightRank);
        m_lightRank = -1;
    }

    return ERR_STOP;
}

void CPyro::CutObjectLink(CObject* obj)
{
    if (m_object == obj)
        m_object = nullptr;
}

void CPyro::DisplayError(PyroType type, CObject* obj)
{
    ObjectType oType = obj->GetType();

    if ( type == PT_FRAGT  ||
         type == PT_FRAGO  ||
         type == PT_FRAGW  ||
         type == PT_EXPLOT ||
         type == PT_EXPLOO ||
         type == PT_EXPLOW ||
         type == PT_BURNT  ||
         type == PT_BURNO  )
    {
        Error err = ERR_OK;
        if ( oType == OBJECT_MOTHER )  err = INFO_DELETEMOTHER;
        if ( oType == OBJECT_ANT    )  err = INFO_DELETEANT;
        if ( oType == OBJECT_BEE    )  err = INFO_DELETEBEE;
        if ( oType == OBJECT_WORM   )  err = INFO_DELETEWORM;
        if ( oType == OBJECT_SPIDER )  err = INFO_DELETESPIDER;

        if ( oType == OBJECT_MOBILEwa ||
             oType == OBJECT_MOBILEta ||
             oType == OBJECT_MOBILEfa ||
             oType == OBJECT_MOBILEia ||
             oType == OBJECT_MOBILEwc ||
             oType == OBJECT_MOBILEtc ||
             oType == OBJECT_MOBILEfc ||
             oType == OBJECT_MOBILEic ||
             oType == OBJECT_MOBILEwi ||
             oType == OBJECT_MOBILEti ||
             oType == OBJECT_MOBILEfi ||
             oType == OBJECT_MOBILEii ||
             oType == OBJECT_MOBILEws ||
             oType == OBJECT_MOBILEts ||
             oType == OBJECT_MOBILEfs ||
             oType == OBJECT_MOBILEis ||
             oType == OBJECT_MOBILErt ||
             oType == OBJECT_MOBILErc ||
             oType == OBJECT_MOBILErr ||
             oType == OBJECT_MOBILErs ||
             oType == OBJECT_MOBILEsa ||
             oType == OBJECT_MOBILEwt ||
             oType == OBJECT_MOBILEtt ||
             oType == OBJECT_MOBILEft ||
             oType == OBJECT_MOBILEit ||
             oType == OBJECT_MOBILEdr )
        {
            err = ERR_DELETEMOBILE;
        }

        if ( oType == OBJECT_DERRICK  ||
             oType == OBJECT_FACTORY  ||
             oType == OBJECT_STATION  ||
             oType == OBJECT_CONVERT  ||
             oType == OBJECT_REPAIR   ||
             oType == OBJECT_DESTROYER||
             oType == OBJECT_TOWER    ||
             oType == OBJECT_RESEARCH ||
             oType == OBJECT_RADAR    ||
             oType == OBJECT_INFO     ||
             oType == OBJECT_ENERGY   ||
             oType == OBJECT_LABO     ||
             oType == OBJECT_NUCLEAR  ||
             oType == OBJECT_PARA     ||
             oType == OBJECT_SAFE     ||
             oType == OBJECT_HUSTON   ||
             oType == OBJECT_START    ||
             oType == OBJECT_END      )
        {
            err = ERR_DELETEBUILDING;
            m_main->DisplayError(err, obj->GetPosition(0), 5.0f);
            return;
        }

        if ( err != ERR_OK )
        {
            m_main->DisplayError(err, obj);
        }
    }
}

void CPyro::CreateLight(Math::Vector pos, float height)
{
    if (!m_engine->GetLightMode()) return;

    m_lightHeight = height;

    Gfx::Light light;
    light.type        = LIGHT_SPOT;
    light.ambient     = Gfx::Color(0.0f, 0.0f, 0.0f);
    light.position    = Math::Vector(pos.x, pos.y+height, pos.z);
    light.direction   = Math::Vector(0.0f, -1.0f, 0.0f);  // against the bottom
    light.spotIntensity = 1.0f;
    light.attenuation0 = 1.0f;
    light.attenuation1 = 0.0f;
    light.attenuation2 = 0.0f;
    light.spotAngle = Math::PI/4.0f;

    m_lightRank = m_lightMan->CreateLight();

    m_lightMan->SetLight(m_lightRank, light);
    m_lightMan->SetLightIntensity(m_lightRank, 0.0f);

    // Only illuminates the objects on the ground.
    m_lightMan->SetLightIncludeType(m_lightRank, ENG_OBJTYPE_TERRAIN);
}

void CPyro::DeleteObject(bool primary, bool secondary)
{
    if (m_object == nullptr) return;

    if (m_object->GetResetCap() == RESET_MOVE)  // resettable object?
    {
        m_object->SetEnable(false);  // object cache and inactive
        Math::Vector pos = m_object->GetPosition(0);
        pos.y = -100.0f;
        m_object->SetPosition(0, pos);
        return;
    }

    ObjectType type = m_object->GetType();
    if ( secondary              &&
         type != OBJECT_FACTORY &&
         type != OBJECT_NUCLEAR &&
         type != OBJECT_ENERGY )
    {
        CObject* sub = m_object->GetPower();
        if ( sub != 0 )
        {
            sub->DeleteObject();  // removes the battery
            delete sub;
            m_object->SetPower(0);
        }

        sub = m_object->GetFret();
        if ( sub != 0 )
        {
            sub->DeleteObject();  // removes the object transported
            delete sub;
            m_object->SetFret(nullptr);
        }
    }

    if (primary)
    {
        CObject* truck = m_object->GetTruck();
        if ( truck != 0 )  // object carries?
        {
            if (truck->GetPower() == m_object)
                truck->SetPower(nullptr);

            if (truck->GetFret() == m_object)
                truck->SetFret(nullptr);
        }

        CObject* sub = m_object;
        sub->DeleteObject();  // removes the object (*)
        delete sub;
        m_object = nullptr;
    }
}

void CPyro::CreateTriangle(CObject* obj, ObjectType oType, int part)
{
    int objRank = obj->GetObjectRank(part);
    if (objRank == -1) return;


    int total = m_engine->GetObjectTotalTriangles(objRank);

    float percent = 0.10f;
    if (total < 50) percent = 0.25f;
    if (total < 20) percent = 0.50f;
    if (m_type == PT_EGG) percent = 0.30f;

    if (oType == OBJECT_POWER    ||
        oType == OBJECT_ATOMIC   ||
        oType == OBJECT_URANIUM  ||
        oType == OBJECT_TNT      ||
        oType == OBJECT_BOMB     ||
        oType == OBJECT_TEEN28)
    {
        percent = 0.75f;
    }
    else if (oType == OBJECT_MOBILEtg)
    {
        percent = 0.50f;
    }

    LODLevel lodLevel = LOD_High;

    if (oType == OBJECT_MOTHER ||
        oType == OBJECT_TEEN28 ||
        oType == OBJECT_TEEN31)
    {
        lodLevel = LOD_Constant;
    }

    std::vector<EngineTriangle> buffer;
    total = m_engine->GetPartialTriangles(objRank, lodLevel, percent, 100, buffer);

    for (int i = 0; i < total; i++)
    {
        Math::Vector p1, p2, p3;

        p1.x = buffer[i].triangle[0].coord.x;
        p1.y = buffer[i].triangle[0].coord.y;
        p1.z = buffer[i].triangle[0].coord.z;
        p2.x = buffer[i].triangle[1].coord.x;
        p2.y = buffer[i].triangle[1].coord.y;
        p2.z = buffer[i].triangle[1].coord.z;
        p3.x = buffer[i].triangle[2].coord.x;
        p3.y = buffer[i].triangle[2].coord.y;
        p3.z = buffer[i].triangle[2].coord.z;

        float h;

        h = Math::Distance(p1, p2);
        if ( h > 5.0f )
        {
            p2.x = p1.x+((p2.x-p1.x)*5.0f/h);
            p2.y = p1.y+((p2.y-p1.y)*5.0f/h);
            p2.z = p1.z+((p2.z-p1.z)*5.0f/h);
        }

        h = Math::Distance(p2, p3);
        if ( h > 5.0f )
        {
            p3.x = p2.x+((p3.x-p2.x)*5.0f/h);
            p3.y = p2.y+((p3.y-p2.y)*5.0f/h);
            p3.z = p2.z+((p3.z-p2.z)*5.0f/h);
        }

        h = Math::Distance(p3, p1);
        if ( h > 5.0f )
        {
            p1.x = p3.x+((p1.x-p3.x)*5.0f/h);
            p1.y = p3.y+((p1.y-p3.y)*5.0f/h);
            p1.z = p3.z+((p1.z-p3.z)*5.0f/h);
        }

        buffer[i].triangle[0].coord.x = p1.x;
        buffer[i].triangle[0].coord.y = p1.y;
        buffer[i].triangle[0].coord.z = p1.z;
        buffer[i].triangle[1].coord.x = p2.x;
        buffer[i].triangle[1].coord.y = p2.y;
        buffer[i].triangle[1].coord.z = p2.z;
        buffer[i].triangle[2].coord.x = p3.x;
        buffer[i].triangle[2].coord.y = p3.y;
        buffer[i].triangle[2].coord.z = p3.z;

        Math::Vector offset;
        offset.x = (buffer[i].triangle[0].coord.x+buffer[i].triangle[1].coord.x+buffer[i].triangle[2].coord.x)/3.0f;
        offset.y = (buffer[i].triangle[0].coord.y+buffer[i].triangle[1].coord.y+buffer[i].triangle[2].coord.y)/3.0f;
        offset.z = (buffer[i].triangle[0].coord.z+buffer[i].triangle[1].coord.z+buffer[i].triangle[2].coord.z)/3.0f;

        buffer[i].triangle[0].coord.x -= offset.x;
        buffer[i].triangle[1].coord.x -= offset.x;
        buffer[i].triangle[2].coord.x -= offset.x;

        buffer[i].triangle[0].coord.y -= offset.y;
        buffer[i].triangle[1].coord.y -= offset.y;
        buffer[i].triangle[2].coord.y -= offset.y;

        buffer[i].triangle[0].coord.z -= offset.z;
        buffer[i].triangle[1].coord.z -= offset.z;
        buffer[i].triangle[2].coord.z -= offset.z;

        Math::Vector speed;
        float mass;

        Math::Matrix* mat = obj->GetWorldMatrix(part);
        Math::Vector pos = Math::Transform(*mat, offset);
        if ( m_type == PT_EGG )
        {
            speed.x = (Math::Rand()-0.5f)*10.0f;
            speed.z = (Math::Rand()-0.5f)*10.0f;
            speed.y = Math::Rand()*15.0f;
            mass = Math::Rand()*20.0f+20.0f;
        }
        else if ( m_type == PT_SPIDER )
        {
            speed.x = (Math::Rand()-0.5f)*10.0f;
            speed.z = (Math::Rand()-0.5f)*10.0f;
            speed.y = Math::Rand()*20.0f;
            mass = Math::Rand()*10.0f+15.0f;
        }
        else
        {
            speed.x = (Math::Rand()-0.5f)*30.0f;
            speed.z = (Math::Rand()-0.5f)*30.0f;
            speed.y = Math::Rand()*30.0f;
            mass = Math::Rand()*10.0f+15.0f;
        }
        if ( oType == OBJECT_STONE   )  speed *= 0.5f;
        if ( oType == OBJECT_URANIUM )  speed *= 0.4f;
        float duration = Math::Rand()*3.0f+3.0f;
        m_particle->CreateFrag(pos, speed, &buffer[i], PARTIFRAG,
                               duration, mass, 0.5f);
    }
}

void CPyro::ExploStart()
{
    m_burnType = m_object->GetType();

    Math::Vector oPos = m_object->GetPosition(0);
    m_burnFall = m_terrain->GetHeightToFloor(oPos, true);

    m_object->Simplify();
    m_object->SetLock(true);  // ruin not usable yet
    m_object->SetExplo(true);  // being destroyed
    m_object->FlatParent();

    if ( m_object->GetSelect() )
    {
        m_object->SetSelect(false);  // deselects the object
        m_camera->SetType(CAM_TYPE_EXPLO);
        m_main->DeselectAll();
    }
    m_object->DeleteDeselList(m_object);

    for (int i = 0; i < OBJECTMAXPART; i++)
    {
        int objRank = m_object->GetObjectRank(i);
        if (objRank == -1) continue;

        // TODO: refactor later to material change
        int oldBaseObjRank = m_engine->GetObjectBaseRank(objRank);
        if (oldBaseObjRank != -1)
        {
            int newBaseObjRank = m_engine->CreateBaseObject();
            m_engine->CopyBaseObject(oldBaseObjRank, newBaseObjRank);
            m_engine->SetObjectBaseRank(objRank, newBaseObjRank);

            m_engine->ChangeSecondTexture(objRank, "dirty04.png");
        }

        Math::Vector pos = m_object->GetPosition(i);

        Math::Vector speed;
        float weight;

        if (i == 0)  // main part?
        {
            weight = 0.0f;

            speed.y = -1.0f;
            speed.x = 0.0f;
            speed.z = 0.0f;
        }
        else
        {
            Math::Vector min, max;
            m_engine->GetObjectBBox(objRank, min, max);
            weight = Math::Distance(min, max);  // weight according to size!

            speed.y = 10.0f+Math::Rand()*20.0f;
            speed.x = (Math::Rand()-0.5f)*20.0f;
            speed.z = (Math::Rand()-0.5f)*20.0f;
        }

        int channel = m_particle->CreatePart(pos, speed, PARTIPART, 10.0f, 20.0f, weight, 0.5f);
        if (channel != -1)
            m_object->SetMasterParticle(i, channel);
    }
    m_engine->LoadTexture("dirty04.png");

    DeleteObject(false, true);  // destroys the object transported + the battery
}
void CPyro::ExploTerminate()
{
    DeleteObject(true, false);  // removes the main object
}

void CPyro::BurnStart()
{
    m_burnType = m_object->GetType();

    Math::Vector oPos = m_object->GetPosition(0);
    m_burnFall = m_terrain->GetHeightToFloor(oPos, true);

    m_object->Simplify();
    m_object->SetLock(true);  // ruin not usable yet

    if ( m_object->GetSelect() )
    {
        m_object->SetSelect(false);  // deselects the object
        m_camera->SetType(CAM_TYPE_EXPLO);
        m_main->DeselectAll();
    }
    m_object->DeleteDeselList(m_object);

    for (int i = 0; i < OBJECTMAXPART; i++)
    {
        int objRank = m_object->GetObjectRank(i);
        if (objRank == -1) continue;

        // TODO: refactor later to material change
        int oldBaseObjRank = m_engine->GetObjectBaseRank(objRank);
        if (oldBaseObjRank != -1)
        {
            int newBaseObjRank = m_engine->CreateBaseObject();
            m_engine->CopyBaseObject(oldBaseObjRank, newBaseObjRank);
            m_engine->SetObjectBaseRank(objRank, newBaseObjRank);

            m_engine->ChangeSecondTexture(objRank, "dirty04.png");
        }
    }
    m_engine->LoadTexture("dirty04.png");

    m_burnPartTotal = 0;

    Math::Vector pos, angle;

    if ( m_burnType == OBJECT_DERRICK  ||
         m_burnType == OBJECT_FACTORY  ||
         m_burnType == OBJECT_REPAIR   ||
         m_burnType == OBJECT_DESTROYER||
         m_burnType == OBJECT_CONVERT  ||
         m_burnType == OBJECT_TOWER    ||
         m_burnType == OBJECT_RESEARCH ||
         m_burnType == OBJECT_ENERGY   ||
         m_burnType == OBJECT_LABO     )
    {
        pos.x =   0.0f;
        pos.y = -(4.0f+Math::Rand()*4.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_STATION ||
              m_burnType == OBJECT_RADAR   ||
              m_burnType == OBJECT_INFO    )
    {
        pos.x =   0.0f;
        pos.y = -(1.0f+Math::Rand()*1.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.2f;
    }
    else if ( m_burnType == OBJECT_NUCLEAR )
    {
        pos.x =   0.0f;
        pos.y = -(10.0f+Math::Rand()*10.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_PARA )
    {
        pos.x =   0.0f;
        pos.y = -(10.0f+Math::Rand()*10.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_SAFE )
    {
        pos.x =   0.0f;
        pos.y = -(10.0f+Math::Rand()*10.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_HUSTON )
    {
        pos.x =   0.0f;
        pos.y = -(10.0f+Math::Rand()*10.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_MOBILEwa ||
              m_burnType == OBJECT_MOBILEwc ||
              m_burnType == OBJECT_MOBILEwi ||
              m_burnType == OBJECT_MOBILEws ||
              m_burnType == OBJECT_MOBILEwt )
    {
        pos.x =   0.0f;
        pos.y = -(0.5f+Math::Rand()*1.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.8f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.4f;
    }
    else if ( m_burnType == OBJECT_TEEN31 )  // basket?
    {
        pos.x =   0.0f;
        pos.y =   0.0f;
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.8f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.2f;
    }
    else
    {
        pos.x =   0.0f;
        pos.y = -(2.0f+Math::Rand()*2.0f);
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.8f;
        angle.y = 0.0f;
        angle.z = (Math::Rand()-0.5f)*0.8f;
    }
    BurnAddPart(0, pos, angle);  // movement of the main part

    m_burnKeepPart[0] = -1;  // nothing to keep

    if ( m_burnType == OBJECT_DERRICK )
    {
        pos.x =   0.0f;
        pos.y = -40.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the drill
    }

    if ( m_burnType == OBJECT_REPAIR )
    {
        pos.x =   0.0f;
        pos.y = -12.0f;
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = -90.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the sensor
    }

    if ( m_burnType == OBJECT_DESTROYER )
    {
        pos.x =   0.0f;
        pos.y = -12.0f;
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = -90.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the sensor
    }

    if ( m_burnType == OBJECT_CONVERT )
    {
        pos.x =    0.0f;
        pos.y = -200.0f;
        pos.z =    0.0f;
        angle.x = (Math::Rand()-0.5f)*0.5f;
        angle.y = (Math::Rand()-0.5f)*0.5f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the cover
        BurnAddPart(2, pos, angle);
        BurnAddPart(3, pos, angle);
    }

    if ( m_burnType == OBJECT_TOWER )
    {
        pos.x =  0.0f;
        pos.y = -7.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = (Math::Rand()-0.5f)*0.4f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the cannon
    }

    if ( m_burnType == OBJECT_RESEARCH )
    {
        pos.x =  0.0f;
        pos.y = -7.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the anemometer
    }

    if ( m_burnType == OBJECT_RADAR )
    {
        pos.x =   0.0f;
        pos.y = -14.0f;
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = (Math::Rand()-0.5f)*0.4f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the radar
        BurnAddPart(2, pos, angle);
    }

    if ( m_burnType == OBJECT_INFO )
    {
        pos.x =   0.0f;
        pos.y = -14.0f;
        pos.z =   0.0f;
        angle.x = (Math::Rand()-0.5f)*0.4f;
        angle.y = (Math::Rand()-0.5f)*0.4f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the information terminal
        BurnAddPart(2, pos, angle);
    }

    if ( m_burnType == OBJECT_LABO )
    {
        pos.x =   0.0f;
        pos.y = -12.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the arm
    }

    if ( m_burnType == OBJECT_NUCLEAR )
    {
        pos.x = 0.0f;
        pos.y = 0.0f;
        pos.z = 0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = -135.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the cover
    }

    if ( m_burnType == OBJECT_MOBILEfa ||
         m_burnType == OBJECT_MOBILEta ||
         m_burnType == OBJECT_MOBILEwa ||
         m_burnType == OBJECT_MOBILEia )
    {
        pos.x =  2.0f;
        pos.y = -5.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = 40.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the arm
    }

    if ( m_burnType == OBJECT_MOBILEfs ||
         m_burnType == OBJECT_MOBILEts ||
         m_burnType == OBJECT_MOBILEws ||
         m_burnType == OBJECT_MOBILEis )
    {
        pos.x =  0.0f;
        pos.y = -7.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = 50.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the sensor
    }

    if ( m_burnType == OBJECT_MOBILEfc ||
         m_burnType == OBJECT_MOBILEtc ||
         m_burnType == OBJECT_MOBILEwc ||
         m_burnType == OBJECT_MOBILEic )
    {
        pos.x = -1.5f;
        pos.y = -5.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = -25.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the cannon
    }

    if ( m_burnType == OBJECT_MOBILEfi ||
         m_burnType == OBJECT_MOBILEti ||
         m_burnType == OBJECT_MOBILEwi ||
         m_burnType == OBJECT_MOBILEii )
    {
        pos.x = -1.5f;
        pos.y = -5.0f;
        pos.z =  0.0f;
        angle.x = (Math::Rand()-0.5f)*0.2f;
        angle.y = (Math::Rand()-0.5f)*0.2f;
        angle.z = -25.0f*Math::PI/180.0f;
        BurnAddPart(1, pos, angle);  // down the insect-cannon
    }

    if ( m_burnType == OBJECT_MOBILErt ||
         m_burnType == OBJECT_MOBILErc )
    {
        pos.x =   0.0f;
        pos.y = -10.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the holder

        pos.x =   0.0f;
        pos.y = -10.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(2, pos, angle);  // down the pestle/cannon
    }

    if ( m_burnType == OBJECT_MOBILErr )
    {
        pos.x =   0.0f;
        pos.y = -10.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the holder

        pos.x =   0.0f;
        pos.y =   0.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = -Math::PI/2.0f;
        BurnAddPart(4, pos, angle);

        pos.x =   0.0f;
        pos.y =   0.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = Math::PI/2.5f;
        BurnAddPart(2, pos, angle);
    }

    if ( m_burnType == OBJECT_MOBILErs )
    {
        pos.x =   0.0f;
        pos.y = -10.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the holder

        pos.x =   0.0f;
        pos.y =  -5.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(2, pos, angle);

        pos.x =   0.0f;
        pos.y =  -5.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(3, pos, angle);
    }

    if ( m_burnType == OBJECT_MOBILEsa )
    {
        pos.x =   0.0f;
        pos.y = -10.0f;
        pos.z =   0.0f;
        angle.x = 0.0f;
        angle.y = 0.0f;
        angle.z = 0.0f;
        BurnAddPart(1, pos, angle);  // down the holder
    }

    if ( m_burnType == OBJECT_MOBILEwa ||
         m_burnType == OBJECT_MOBILEwc ||
         m_burnType == OBJECT_MOBILEwi ||
         m_burnType == OBJECT_MOBILEws ||
         m_burnType == OBJECT_MOBILEwt )  // wheels?
    {
        int i = 0;
        for (; i < 4; i++)
        {
            pos.x = 0.0f;
            pos.y = Math::Rand()*0.5f;
            pos.z = 0.0f;
            angle.x = (Math::Rand()-0.5f)*Math::PI/2.0f;
            angle.y = (Math::Rand()-0.5f)*Math::PI/2.0f;
            angle.z = 0.0f;
            BurnAddPart(6+i, pos, angle);  // wheel

            m_burnKeepPart[i] = 6+i;  // we keep the wheels
        }
        m_burnKeepPart[i] = -1;
    }

    if ( m_burnType == OBJECT_MOBILEta ||
         m_burnType == OBJECT_MOBILEtc ||
         m_burnType == OBJECT_MOBILEti ||
         m_burnType == OBJECT_MOBILEts ||
         m_burnType == OBJECT_MOBILErt ||
         m_burnType == OBJECT_MOBILErc ||
         m_burnType == OBJECT_MOBILErr ||
         m_burnType == OBJECT_MOBILErs ||
         m_burnType == OBJECT_MOBILEsa ||
         m_burnType == OBJECT_MOBILEdr )  // caterpillars?
    {
        pos.x =   0.0f;
        pos.y =  -4.0f;
        pos.z =   2.0f;
        angle.x = (Math::Rand()-0.5f)*20.0f*Math::PI/180.0f;
        angle.y = (Math::Rand()-0.5f)*10.0f*Math::PI/180.0f;
        angle.z = (Math::Rand()-0.5f)*30.0f*Math::PI/180.0f;
        BurnAddPart(6, pos, angle);  // down the right caterpillar

        pos.x =   0.0f;
        pos.y =  -4.0f;
        pos.z =  -2.0f;
        angle.x = (Math::Rand()-0.5f)*20.0f*Math::PI/180.0f;
        angle.y = (Math::Rand()-0.5f)*10.0f*Math::PI/180.0f;
        angle.z = (Math::Rand()-0.5f)*30.0f*Math::PI/180.0f;
        BurnAddPart(7, pos, angle);  // down the left caterpillar
    }

    if ( m_burnType == OBJECT_MOBILEfa ||
         m_burnType == OBJECT_MOBILEfc ||
         m_burnType == OBJECT_MOBILEfi ||
         m_burnType == OBJECT_MOBILEfs ||
         m_burnType == OBJECT_MOBILEft )  // flying?
    {
        int i = 0;
        for (; i<3; i++)
        {
            pos.x =  0.0f;
            pos.y = -3.0f;
            pos.z =  0.0f;
            angle.x = 0.0f;
            angle.y = 0.0f;
            angle.z = (Math::Rand()-0.5f)*Math::PI/2.0f;
            BurnAddPart(6+i, pos, angle);  // foot
        }
        m_burnKeepPart[i] = -1;
    }

    if ( m_burnType == OBJECT_MOBILEia ||
         m_burnType == OBJECT_MOBILEic ||
         m_burnType == OBJECT_MOBILEii ||
         m_burnType == OBJECT_MOBILEis )  // legs?
    {
        for (int i = 0; i < 6; i++)
        {
            pos.x =  0.0f;
            pos.y = -3.0f;
            pos.z =  0.0f;
            angle.x = 0.0f;
            angle.y = (Math::Rand()-0.5f)*Math::PI/4.0f;
            angle.z = (Math::Rand()-0.5f)*Math::PI/4.0f;
            BurnAddPart(6+i, pos, angle);  // leg
        }
    }
}

void CPyro::BurnAddPart(int part, Math::Vector pos, Math::Vector angle)
{
    int i = m_burnPartTotal;
    m_burnPart[i].part = part;
    m_burnPart[i].initialPos = m_object->GetPosition(part);
    m_burnPart[i].finalPos = m_burnPart[i].initialPos+pos;
    m_burnPart[i].initialAngle = m_object->GetAngle(part);
    m_burnPart[i].finalAngle = m_burnPart[i].initialAngle+angle;

    m_burnPartTotal++;
}

void CPyro::BurnProgress()
{
    if ( m_burnType == OBJECT_TEEN31 )  // basket?
    {
        m_object->SetZoomY(0, 1.0f-m_progress*0.5f);  // slight flattening
    }

    for (int i = 0; i < m_burnPartTotal; i++)
    {
        Math::Vector pos = m_burnPart[i].initialPos + m_progress*(m_burnPart[i].finalPos-m_burnPart[i].initialPos);
        if ( i == 0 && m_burnFall > 0.0f )
        {
            float h = powf(m_progress, 2.0f)*1000.0f;
            if ( h > m_burnFall )  h = m_burnFall;
            pos.y -= h;
        }
        m_object->SetPosition(m_burnPart[i].part, pos);

        pos = m_burnPart[i].initialAngle + m_progress*(m_burnPart[i].finalAngle-m_burnPart[i].initialAngle);
        m_object->SetAngle(m_burnPart[i].part, pos);
    }

    CObject* sub = m_object->GetPower();
    if (sub != nullptr)  // is there a battery?
        sub->SetZoomY(0, 1.0f - m_progress);  // complete flattening
}

bool CPyro::BurnIsKeepPart(int part)
{
    int i = 0;
    while (m_burnKeepPart[i] != -1)
    {
        if (part == m_burnKeepPart[i++]) return true;  // must keep
    }
    return false;  // must destroy
}

void CPyro::BurnTerminate()
{
    if (m_type == PT_BURNO)  // organic object is burning?
    {
        DeleteObject(true, true);  // removes the insect
        return;
    }

    for (int i = 1; i < OBJECTMAXPART; i++)
    {
        int objRank = m_object->GetObjectRank(i);
        if (objRank == -1) continue;
        if (BurnIsKeepPart(i)) continue;

        m_object->DeletePart(i);
    }

    DeleteObject(false, true);  // destroys the object transported + the battery

    if ( m_burnType == OBJECT_DERRICK  ||
         m_burnType == OBJECT_STATION  ||
         m_burnType == OBJECT_FACTORY  ||
         m_burnType == OBJECT_REPAIR   ||
         m_burnType == OBJECT_DESTROYER||
         m_burnType == OBJECT_CONVERT  ||
         m_burnType == OBJECT_TOWER    ||
         m_burnType == OBJECT_RESEARCH ||
         m_burnType == OBJECT_RADAR    ||
         m_burnType == OBJECT_INFO     ||
         m_burnType == OBJECT_ENERGY   ||
         m_burnType == OBJECT_LABO     ||
         m_burnType == OBJECT_NUCLEAR  ||
         m_burnType == OBJECT_PARA     ||
         m_burnType == OBJECT_SAFE     ||
         m_burnType == OBJECT_HUSTON   ||
         m_burnType == OBJECT_START    ||
         m_burnType == OBJECT_END      )
    {
        m_object->SetType(OBJECT_RUINfactory);  // others become a ruin
        m_object->SetLock(false);
    }
    else
    {
        m_object->SetType(OBJECT_RUINmobilew1);  // others become a ruin
        m_object->SetLock(false);
    }

    m_object->SetBurn(false);  // ruin usable (c-e-d. recoverable)
}

void CPyro::FallStart()
{
    m_object->SetBurn(true);  // usable

    Math::Vector pos = m_object->GetPosition(0);
    m_fallFloor = m_terrain->GetFloorLevel(pos);
    m_fallSpeed = 0.0f;
    m_fallBulletTime = 0.0f;
    m_fallEnding = false;
}

CObject* CPyro::FallSearchBeeExplo()
{
    Math::Vector iPos;
    float iRadius;
    m_object->GetCrashSphere(0, iPos, iRadius);

    CInstanceManager* iMan = CInstanceManager::GetInstancePointer();

    for (int i = 0; i < 1000000; i++)
    {
        CObject* pObj = static_cast<CObject*>(iMan->SearchInstance(CLASS_OBJECT, i));
        if ( pObj == 0 )  break;

        ObjectType oType = pObj->GetType();
        if ( oType != OBJECT_HUMAN    &&
             oType != OBJECT_MOBILEfa &&
             oType != OBJECT_MOBILEta &&
             oType != OBJECT_MOBILEwa &&
             oType != OBJECT_MOBILEia &&
             oType != OBJECT_MOBILEfc &&
             oType != OBJECT_MOBILEtc &&
             oType != OBJECT_MOBILEwc &&
             oType != OBJECT_MOBILEic &&
             oType != OBJECT_MOBILEfi &&
             oType != OBJECT_MOBILEti &&
             oType != OBJECT_MOBILEwi &&
             oType != OBJECT_MOBILEii &&
             oType != OBJECT_MOBILEfs &&
             oType != OBJECT_MOBILEts &&
             oType != OBJECT_MOBILEws &&
             oType != OBJECT_MOBILEis &&
             oType != OBJECT_MOBILErt &&
             oType != OBJECT_MOBILErc &&
             oType != OBJECT_MOBILErr &&
             oType != OBJECT_MOBILErs &&
             oType != OBJECT_MOBILEsa &&
             oType != OBJECT_MOBILEtg &&
             oType != OBJECT_MOBILEft &&
             oType != OBJECT_MOBILEtt &&
             oType != OBJECT_MOBILEwt &&
             oType != OBJECT_MOBILEit &&
             oType != OBJECT_MOBILEdr &&
             oType != OBJECT_BASE     &&
             oType != OBJECT_DERRICK  &&
             oType != OBJECT_STATION  &&
             oType != OBJECT_FACTORY  &&
             oType != OBJECT_REPAIR   &&
             oType != OBJECT_DESTROYER&&
             oType != OBJECT_CONVERT  &&
             oType != OBJECT_TOWER    &&
             oType != OBJECT_RESEARCH &&
             oType != OBJECT_RADAR    &&
             oType != OBJECT_INFO     &&
             oType != OBJECT_ENERGY   &&
             oType != OBJECT_LABO     &&
             oType != OBJECT_NUCLEAR  &&
             oType != OBJECT_PARA     &&
             oType != OBJECT_SAFE     &&
             oType != OBJECT_HUSTON   &&
             oType != OBJECT_METAL    &&
             oType != OBJECT_POWER    &&
             oType != OBJECT_ATOMIC   )  continue;

        if ( pObj->GetTruck() != 0 )  continue;  // object transported?

        Math::Vector oPos = pObj->GetPosition(0);

        float distance;

        float shieldRadius = pObj->GetShieldRadius();
        if ( shieldRadius > 0.0f )
        {
            distance = Math::Distance(oPos, iPos);
            if (distance <= shieldRadius) return pObj;
        }

        if ( oType == OBJECT_BASE )
        {
            distance = Math::Distance(oPos, iPos);
            if (distance < 25.0f) return pObj;
        }

        // Test the center of the object, which is necessary for objects
        // that have no sphere in the center (station).
        distance = Math::Distance(oPos, iPos)-4.0f;
        if (distance < 5.0f) return pObj;

        // Test with all spheres of the object.
        Math::Vector ooPos;
        float ooRadius;
        int j = 0;
        while (pObj->GetCrashSphere(j++, ooPos, ooRadius))
        {
            distance = Math::Distance(ooPos, iPos);
            if (distance <= iRadius+ooRadius)
            {
                return pObj;
            }
        }
    }

    return nullptr;
}

void CPyro::FallProgress(float rTime)
{
    if (m_object == nullptr) return;

    m_fallSpeed += rTime*50.0f;  // v2 = v1 + a*dt
    Math::Vector pos;
    pos = m_object->GetPosition(0);
    pos.y -= m_fallSpeed*rTime;  // dd -= v2*dt

    bool floor = false;

    if (pos.y <= m_fallFloor)  // below the ground level?
    {
        pos.y = m_fallFloor;
        floor = true;
    }
    m_object->SetPosition(0, pos);

    if (m_object->GetType() == OBJECT_BULLET)
    {
        m_fallBulletTime += rTime;

        if (m_fallBulletTime > 0.2f || floor)
        {
            m_fallBulletTime = 0.0f;

            CObject* obj = FallSearchBeeExplo();
            if (obj == nullptr)
            {
                if (floor)  // reaches the ground?
                {
                    m_object->ExploObject(EXPLO_BOUM, 0.0f);  // start explosion
                }
            }
            else
            {
                if (obj->GetShieldRadius() > 0.0f)  // protected by shield?
                {
                    m_particle->CreateParticle(pos, Math::Vector(0.0f, 0.0f, 0.0f),
                                                Math::Point(6.0f, 6.0f), PARTIGUNDEL, 2.0f, 0.0f, 0.0f);
                    m_sound->Play(SOUND_GUNDEL);

                    DeleteObject(true, true);  // removes the ball
                }
                else
                {
                    if (obj->ExploObject(EXPLO_BOUM, 1.0f))  // start explosion
                    {
                        DeleteObject(true, true);  // removes the ball
                    }
                    else
                    {
                        m_object->ExploObject(EXPLO_BOUM, 0.0f);  // start explosion
                    }
                }
            }

            if (floor || obj != nullptr)
            {
                m_fallEnding = true;
            }
        }
    }
}

Error CPyro::FallIsEnded()
{
    if (m_fallEnding || m_object == 0) return ERR_STOP;

    Math::Vector pos = m_object->GetPosition(0);
    if (pos.y > m_fallFloor) return ERR_CONTINUE;

    m_sound->Play(SOUND_BOUM, pos);
    m_object->SetBurn(false);  // usable again

    return ERR_STOP;
}

void CPyro::LightOperFlush()
{
    m_lightOperTotal = 0;
}

void CPyro::LightOperAdd(float progress, float intensity, float r, float g, float b)
{
    int i = m_lightOperTotal;

    m_lightOper[i].progress  = progress;
    m_lightOper[i].intensity = intensity;
    m_lightOper[i].color.r   = r;
    m_lightOper[i].color.g   = g;
    m_lightOper[i].color.b   = b;

    m_lightOperTotal++;
}

void CPyro::LightOperFrame(float rTime)
{
    for (int i = 0; i < m_lightOperTotal; i++)
    {
        if ( m_progress < m_lightOper[i].progress )
        {
            assert(i > 0); // TODO: if assert fails, fix the code
            float progress = (m_progress-m_lightOper[i-1].progress) / (m_lightOper[i].progress-m_lightOper[i-1].progress);

            float intensity = m_lightOper[i-1].intensity + (m_lightOper[i].intensity-m_lightOper[i-1].intensity)*progress;
            Gfx::Color color;
            color.r = m_lightOper[i-1].color.r + (m_lightOper[i].color.r-m_lightOper[i-1].color.r)*progress;
            color.g = m_lightOper[i-1].color.g + (m_lightOper[i].color.g-m_lightOper[i-1].color.g)*progress;
            color.b = m_lightOper[i-1].color.b + (m_lightOper[i].color.b-m_lightOper[i-1].color.b)*progress;

            m_lightMan->SetLightIntensity(m_lightRank, intensity);
            m_lightMan->SetLightColor(m_lightRank, color);
            break;
        }
    }
}


} // namespace Gfx

