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     static float cattenuation[] = {1.5f};
  29     static float lattenuation[] = {0.5f};
  30     static float zattenuation[] = {0.0f};
  31
  32     //Initialize lights
  33     if (whichlight == 0) {
  34         GLfloat LightAmbient[] = { whichsource->ambient[0], whichsource->ambient[1], whichsource->ambient[2], 1.0f};
  35         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  36         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 0.0f };
  37
  38         //glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, qattenuation);
  39         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  40         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  41         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  42         glEnable(GL_LIGHT0);
  43     } else {
  44         GLenum lightselect = GL_LIGHT1;
  45         switch (whichlight) {
  46         case 2:
  47             lightselect = GL_LIGHT2;
  48             break;
  49         case 3:
  50             lightselect = GL_LIGHT3;
  51             break;
  52         case 4:
  53             lightselect = GL_LIGHT4;
  54             break;
  55         case 5:
  56             lightselect = GL_LIGHT5;
  57             break;
  58         case 6:
  59             lightselect = GL_LIGHT6;
  60             break;
  61         case 7:
  62             lightselect = GL_LIGHT7;
  63             break;
  64         }
  65
  66         GLfloat LightAmbient[] = { 0, 0, 0, 1.0f};
  67         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  68         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  69
  70         glLightfv(lightselect, GL_QUADRATIC_ATTENUATION, qattenuation);
  71         glLightfv(lightselect, GL_POSITION, LightPosition);
  72         glLightfv(lightselect, GL_AMBIENT, LightAmbient);
  73         glLightfv(lightselect, GL_DIFFUSE, LightDiffuse);
  74         glEnable(lightselect);
  75
  76     }
  77 }
  78
  79 void SetUpMainLight(Light* whichsource, int whichlight, float ambientr, float ambientg, float ambientb)
  80 {
  81     static float qattenuation[] = {0.0f};
  82
  83     //Initialize lights
  84
  85     if (whichlight == 0) {
  86         GLfloat LightAmbient[] = { ambientr, ambientg, ambientb, 1.0f};
  87         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  88         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  89
  90         glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, qattenuation);
  91         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  92         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  93         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  94         glEnable(GL_LIGHT0);
  95     }
  96 }