src/obj_level_lights.cxx

   1 /*
   2  * level_lights.cxx
   3  * Daniel Nelson - 10/13/0
   4  *
   5  * Copyright (C) 2000  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  * Generates the list for the level lights.
  26  */
  27
  28 #include <GL/glut.h>
  29
  30 #include "glext.h"
  31
  32 #include "Game.h"
  33 #include "Displayer.h"
  34
  35 // level lights' geometric constants
  36 #define LG_A                                (0.96f)
  37 #define LG_B                                (0.36f)
  38 #define LG_C                                (0.3f)
  39 #define LG_D                                (0.72f)
  40
  41 GLuint Displayer::level_light_list;
  42
  43 void Displayer::generateLevelLights (   )
  44 {
  45   level_light_list = glGenLists(1);
  46
  47   glNewList(level_light_list, GL_COMPILE);
  48     glBegin(GL_TRIANGLES);
  49
  50       drawTriangle(0.0f, 0.0f, 0.0f + DC_EXTERNAL_OFFSET_Z,
  51        LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z,
  52        LG_A, LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z);
  53
  54       drawTriangle(LG_A, LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z,
  55        LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z,
  56        LG_A, -LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z);
  57
  58       drawTriangle(0.0f, 0.0f, 0.0f + DC_EXTERNAL_OFFSET_Z,
  59        LG_A, -LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z,
  60        LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z);
  61
  62     glEnd();
  63   glEndList();
  64 }