ExplosionNukeRenderer.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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 of the License, or
//    (at your option) any later version.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <sprites/ExplosionNukeRenderer.h>
#include <sprites/ExplosionTextures.h>
#include <client/ScorchedClient.h>
#include <common/Defines.h>
#include <graph/OptionsDisplay.h>
#include <landscape/Landscape.h>
#include <landscapemap/LandscapeMaps.h>
#include <math.h>

static const int AlphaSteps = int(ExplosionNukeRenderer_STEPS * 0.9f);

ExplosionNukeRendererEntry::ExplosionNukeRendererEntry(
        Vector &position, float size) :
        totalTime_(0.0f), size_(size),
        startPosition_(position), cloudRotation_(0.0f)
{
        float rot = RAND * 3.14f * 2.0f;
        float width = RAND * 0.5f + 1.0f;
    
        cloudRotation_ = RAND * 360.0f;
        rotation_[0] = getFastSin(rot) * width;
        rotation_[1] = getFastCos(rot) * width;
}

ExplosionNukeRendererEntry::~ExplosionNukeRendererEntry()
{
}

void ExplosionNukeRendererEntry::simulate(Particle *particle, float time)
{
        totalTime_ += time;
        cloudRotation_ += time * 5.0f;

        int position = int((totalTime_ / (16.0f / 3.0f)) * 
                float(ExplosionNukeRenderer_STEPS));
        if (position >= ExplosionNukeRenderer_STEPS)
                position = ExplosionNukeRenderer_STEPS - 1;

        float z = ExplosionNukeRenderer::positions_[position][2] * (10.0f + size_) / 30.0f;
        float w = ExplosionNukeRenderer::positions_[position][0] + (size_ / 2.0f);
        particle->position_[0] = startPosition_[0] + rotation_[0] * w;
        particle->position_[1] = startPosition_[1] + rotation_[1] * w;
        particle->position_[2] = startPosition_[2] + z;
}

Vector *ExplosionNukeRenderer::positions_ = 0;

ExplosionNukeRenderer::ExplosionNukeRenderer(Vector &position, float size) 
        : totalTime_(0.0f), time_(0.0f), position_(position), size_(size)
{
        position_[2] -= size_;
        float height = ScorchedClient::instance()->getLandscapeMaps().
                getGroundMaps().getHeight((int) position_[0], (int) position_[1]).asFloat();
        if (position_[2] < height) position_[2] = height;

        if (!positions_)
        {
                positions_ = new Vector[ExplosionNukeRenderer_STEPS];

                float zPos = 0.0f;
                float width = 0.0f;
                float widthAdd = 0.0f;

                for (int i=0; i<ExplosionNukeRenderer_STEPS; i++)
                {
                        Vector pos;
                        pos[0] = width;
                        pos[1] = 0.0f;
                        pos[2] = zPos;

                        if (i > (ExplosionNukeRenderer_STEPS * (0.3f))){
                                width += 0.5f;
                                
                        }else{ 
                                
                                zPos += 2.0f;
                        }

                        positions_[i] = pos;
                }
        }

        emitter_.setAttributes(
                5.0f, 5.0f, // Life
                0.2f, 0.5f, // Mass
                0.01f, 0.02f, // Friction
                Vector(0.0f, 0.0f, 0.0f), Vector(0.0f, 0.0f, 0.0f), // Velocity
                Vector(1.0f, 1.0f, 1.0f), 0.3f, // StartColor1
                Vector(1.0f, 1.0f, 1.0f), 0.2f, // StartColor2
                Vector(1.0f, 1.0f, 1.0f), 0.0f, // EndColor1
                Vector(1.0f, 1.0f, 1.0f), 0.0f, // EndColor2
                2.0f, 2.0f, 3.0f, 3.0f, // Start Size
                4.0f, 4.0f, 6.0f, 6.0f, // EndSize
                Vector(0.0f, 0.0f, 100.0f), // Gravity
                false,
                false);
}

ExplosionNukeRenderer::~ExplosionNukeRenderer()
{
}

void ExplosionNukeRenderer::draw(Action *action)
{
}

void ExplosionNukeRenderer::simulate(Action *action, float frameTime, bool &remove)
{
        float AddSmokeTime = 0.08f;
        int SmokesPerTime = 14;
        if (OptionsDisplay::instance()->getEffectsDetail() == 0) 
        {
                SmokesPerTime = 8;
        }
        else if (OptionsDisplay::instance()->getEffectsDetail() == 2) 
        {
                SmokesPerTime = 18;
        }

        totalTime_ += frameTime;
        time_ += frameTime;
        
        while (time_ > AddSmokeTime)
        {
                time_ -= AddSmokeTime;

                // Add any new entries
                if (totalTime_ > 1.25f)
                {
                        if (totalTime_ < 2.25f)
                        {
                                emitter_.emitMushroom(
                                        position_,
                                        ScorchedClient::instance()->getParticleEngine(),
                                        SmokesPerTime,
                                        size_);
                        }
                        else remove = true;
                }
        }
}

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