src/LoseBar.cxx

   1 /*
   2  * LoseBar.cxx
   3  * Daniel Nelson - 3/1/2
   4  *
   5  * Copyright (C) 2002  Daniel Nelson
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * Daniel Nelson - aluminumangel.org
  22  * 174 W. 18th Ave.
  23  * Columbus, OH  43210
  24  *
  25  * Handles the losebar.
  26  */
  27
  28 #include <GL/glut.h>
  29 #include <cassert>
  30
  31 #ifndef _WIN32
  32 #else
  33 #  include <glext.h>
  34 #endif
  35
  36 using namespace std;
  37
  38 #include "Game.h"
  39 #include "Creep.h"
  40 #include "Displayer.h"
  41 #include "LoseBar.h"
  42
  43 GLfloat LoseBar::bar;
  44 int LoseBar::fade_timer;
  45 int LoseBar::state;
  46
  47 void LoseBar::initialize (   )
  48 {
  49   bar = 0.0f;
  50   fade_timer = 0;
  51   state = LB_INACTIVE;
  52
  53 }
  54
  55 void LoseBar::gameStart (   )
  56 {
  57   // at the start of the game, fade to inactive
  58   if (state == LB_LOW_ALERT)
  59     enterLowToInactiveFade();
  60   else if (state == LB_HIGH_ALERT)
  61     enterHighToInactiveFade();
  62 }
  63
  64 void LoseBar::timeStep (   )
  65 {
  66   // update state
  67
  68   // if we're not on alert
  69   if (state
  70    & (LB_INACTIVE | LB_FADE_LOW_TO_INACTIVE | LB_FADE_HIGH_TO_INACTIVE)) {
  71
  72     // if we're done fading
  73     if (state & (LB_FADE_LOW_TO_INACTIVE | LB_FADE_HIGH_TO_INACTIVE)
  74      && --fade_timer == 0)
  75       state = LB_INACTIVE;
  76
  77     // if we should be on alert
  78     if (Creep::creep_freeze) {
  79       // no check for high alert is needed
  80       state = LB_LOW_ALERT;
  81       fade_timer = 0;
  82     }
  83
  84   // if we are on low alert
  85   } else if (state == LB_LOW_ALERT) {
  86
  87     // if we no longer should be on alert
  88     if (!Creep::creep_freeze)
  89       enterLowToInactiveFade();
  90
  91     // if we should enter high alert
  92     else if (Creep::loss_alarm <= GC_LOSS_DELAY_ELIMINATION)
  93       state = LB_HIGH_ALERT;
  94
  95   // if we are on high alert
  96   } else if (state == LB_HIGH_ALERT) {
  97
  98     // if we no longer should be on alert
  99     if (!Creep::creep_freeze)
 100       enterHighToInactiveFade();
 101
 102   // if we are fading because of a high alert reset
 103   } else if (state == LB_FADE_RESET_HIGH) {
 104     if (--fade_timer == 0)
 105       state = LB_HIGH_ALERT;
 106   }
 107
 108   // calculate the bar value
 109
 110   if (state & (LB_LOW_ALERT | LB_HIGH_ALERT))
 111     if (state & LB_LOW_ALERT)
 112       bar = (GC_LOSS_DELAY - Creep::loss_alarm)
 113        * (1.0f / (GLfloat) (GC_LOSS_DELAY - GC_LOSS_DELAY_ELIMINATION));
 114     else
 115       bar = (GC_LOSS_DELAY_ELIMINATION - Creep::loss_alarm)
 116        * (1.0f / (GLfloat) GC_LOSS_DELAY_ELIMINATION);
 117 }