Shockwave.cpp

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//
// Das Tank - Copyright (C) 2006, 2007 Windsor Schmidt <windsor@windsorworld.net>
//
// 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 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, write to the Free Software Foundation, Inc., 59 Temple
// Place, Suite 330, Boston, MA 02111-1307 USA
//


#ifndef STDAFX
#include "stdafx.h"
#endif


Shockwave::Shockwave(void)
{
       vPosition.x = 0;
       fEnergy = .1;
       fAge = 0;
       
       fColorR = 1; // set default color to white
       fColorG = 1;
       fColorB = 1;
}


Shockwave::Shockwave(Vector vPos, float energy)
{
       vPosition = vPos;
       fEnergy = energy;
       fAge = 0;
       
       fColorR = 1; // set default color to white
       fColorG = 1;
       fColorB = 1;
}


Shockwave::~Shockwave(void)
{
}


void Shockwave::Draw(void)
{
       int i;
       
       glBlendFunc (GL_SRC_ALPHA, GL_ONE);
       glEnable (GL_BLEND);
       glDisable(GL_TEXTURE_2D);
       glPushMatrix();
       glTranslatef(vPosition.x, vPosition.y, 0.1);
       glColor4f(0.2, 0.6, 1, fEnergy);
       DrawDisc(fAge * 0.0025);
       glColor4f(fColorR, fColorG, fColorB, fEnergy);
       DrawCircle(fAge * 0.0035);
       glRotatef(-fAge * 0.1, 0, 0, 1);
       glLineWidth(5);
       glColor4f(1.0, 1.0, 1.0, fEnergy * 0.4);
       DrawStar(fAge * 0.005 - 1);
       glLineWidth(1);

       glPopMatrix();
}


bool Shockwave::Step(float timeStep)
{
       fAge += timeStep;

       fEnergy -= .02;

       if(fEnergy <= 0)
       {
              return true;
       }
       else
       {
              return false;
       }
}


void Shockwave::SetColor(float r, float g, float b)
{
       fColorR = r;
       fColorG = g;
       fColorB = b;
}

 

Copyright Windsor Schmidt 2006 - All rights reserved.