Source/Lights.cpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3
   4 This file is part of Lugaru.
   5
   6 Lugaru is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14
  15 See the 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
  22 /**> HEADER FILES <**/
  23 #include "Lights.h"
  24
  25 void SetUpLight(Light* whichsource, int whichlight)
  26 {
  27     static float qattenuation[] = {0.0002f};
  28
  29     //Initialize lights
  30     if (whichlight == 0) {
  31         GLfloat LightAmbient[] = { whichsource->ambient[0], whichsource->ambient[1], whichsource->ambient[2], 1.0f};
  32         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  33         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 0.0f };
  34
  35         //glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, qattenuation);
  36         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  37         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  38         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  39         glEnable(GL_LIGHT0);
  40     } else {
  41         GLenum lightselect = GL_LIGHT1;
  42         switch (whichlight) {
  43         case 2:
  44             lightselect = GL_LIGHT2;
  45             break;
  46         case 3:
  47             lightselect = GL_LIGHT3;
  48             break;
  49         case 4:
  50             lightselect = GL_LIGHT4;
  51             break;
  52         case 5:
  53             lightselect = GL_LIGHT5;
  54             break;
  55         case 6:
  56             lightselect = GL_LIGHT6;
  57             break;
  58         case 7:
  59             lightselect = GL_LIGHT7;
  60             break;
  61         }
  62
  63         GLfloat LightAmbient[] = { 0, 0, 0, 1.0f};
  64         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  65         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  66
  67         glLightfv(lightselect, GL_QUADRATIC_ATTENUATION, qattenuation);
  68         glLightfv(lightselect, GL_POSITION, LightPosition);
  69         glLightfv(lightselect, GL_AMBIENT, LightAmbient);
  70         glLightfv(lightselect, GL_DIFFUSE, LightDiffuse);
  71         glEnable(lightselect);
  72
  73     }
  74 }
  75
  76 void SetUpMainLight(Light* whichsource, int whichlight, float ambientr, float ambientg, float ambientb)
  77 {
  78     static float qattenuation[] = {0.0f};
  79
  80     //Initialize lights
  81
  82     if (whichlight == 0) {
  83         GLfloat LightAmbient[] = { ambientr, ambientg, ambientb, 1.0f};
  84         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  85         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  86
  87         glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, qattenuation);
  88         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  89         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  90         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  91         glEnable(GL_LIGHT0);
  92     }
  93 }