source: orxonox.OLD/orxonox/trunk/core/shoot_rocket.cc @ 1920

/* 
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Patrick Boenzli
   co-programmer:  Benjamin Grauer
*/


#include "shoot_rocket.h"

#include <iostream>


using namespace std;



ShootRocket::ShootRocket () 
{
  lastShoot = null;
  step = 1.0;
}


ShootRocket::~ShootRocket () {}


void ShootRocket::drawShoot() 
{

  //cout << "ShootRocket::drawShoot" << endl;
  /* now draw all the shoots (many) */
  shoot* tmpShoot = lastShoot;
  shoot* lastRef = null;
  while( tmpShoot != null )
    {
      glPushMatrix(); 
      glTranslatef(tmpShoot->xCor, tmpShoot->yCor, tmpShoot->zCor);
      tmpShoot->xCor+=tmpShoot->xVel;
      tmpShoot->yCor+=tmpShoot->yVel;
      tmpShoot->xVel+=tmpShoot->xAcc;
      tmpShoot->yVel+=tmpShoot->yAcc;
      
      glScalef(0.1, 0.1, 0.1);
      glutWireCube(1.0);
      glPopMatrix();

      /* garbage collection: look if shoot is outside world */
      /* fix1: weak boundaries check all four sides */
      /* fix2: conditions, that a struct tree can be cut off */
      /* fix3: more efficent and nicer please */
      if (tmpShoot->yCor - DataTank::yOffset > 20) 
        {
          /* normal case: delete one element, link the others */
          if (lastRef != null) 
            {
              //cout << "garbage collection" << endl;
              lastRef->next = tmpShoot->next;
              delete tmpShoot;
              tmpShoot = lastRef->next;
              //cout << "garbage collection left" << endl;
            }
          else
            {
              /* special case: first element to be processed */
              //cout << "garbage collecton: first el in queue" << endl;
              lastRef = tmpShoot->next;
              delete tmpShoot;
              tmpShoot = lastRef;
              lastShoot = tmpShoot;
              if (tmpShoot != null) 
                {
                  tmpShoot = tmpShoot->next;
                  //cout << "noch nich null" << endl;
                }
              else 
                {
                  lastRef = null;
                  tmpShoot = null;
                  lastShoot = null;
                  //cout << "endl null" << endl;
                }
              
              //cout << "garbage collection: firtst el in queue left" << endl;
            }
        }
      else 
        {
          lastRef = tmpShoot;
          tmpShoot = tmpShoot->next;
        }
    }
  //cout << "ShootRocket::drawShoot - finished" << endl;
}


void ShootRocket::addShoot(shoot* sh) 
{
  sh->next = null;
  lastShoot = sh;
}

void ShootRocket::addShoot(float x, float y, float z)
{
  //cout << "ShootRocket::addShoot" << endl;
  shoot* sh = new shoot;
  sh->xCor = x; sh->yCor = y; sh->zCor = z;
  sh->xVel = -1+(float)random() / 1000000000/step; 
  sh->yVel = -1/step;
  sh->zVel = 1-(float)random() / 1000000000/step;
  sh->xAcc = 0; sh->yAcc = .1/step; sh->zAcc = 0;
  sh->next = lastShoot;
  lastShoot = sh;
}

void ShootRocket::addShootExt(float x, float y, float z, 
                             float xVel, float yVel, float zVel)
{
  //cout << "ShootRocket::addShootExtended" << endl;
  shoot* sh = new shoot;
  sh->xCor = x; sh->yCor = y; sh->zCor = z;
  sh->xVel = xVel/step; sh->yVel = yVel/step; sh->zVel = zVel/step;
  sh->xAcc = 0; sh->yAcc = .05; sh->zAcc = 0;
  sh->next = lastShoot;
  lastShoot = sh;
}

void ShootRocket::setShootStep(float step) 
{
  cout << "ShootRocket::setShootStep to " << step << endl;
  this->step = step;
}


/* Exterminate shoot from game, implement this method  */
/* if you like to add animatiion */
void ShootRocket::removeShoot(shoot* sh)
{
  glPushMatrix(); 
  glTranslatef(sh->xCor, sh->yCor, sh->zCor);
  glutWireCube(1.0);
  glPopMatrix();
}