Source/Environment/Lights.cpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3 Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
   4
   5 This file is part of Lugaru.
   6
   7 Lugaru is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 Lugaru 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 Lugaru.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "Environment/Lights.hpp"
  22
  23 void SetUpLight(Light* whichsource, int whichlight)
  24 {
  25     static float qattenuation[] = { 0.0002f };
  26
  27     //Initialize lights
  28     if (whichlight == 0) {
  29         GLfloat LightAmbient[] = { whichsource->ambient[0], whichsource->ambient[1], whichsource->ambient[2], 1.0f };
  30         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  31         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 0.0f };
  32
  33         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  34         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  35         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  36         glEnable(GL_LIGHT0);
  37     } else {
  38         GLenum lightselect = GL_LIGHT1;
  39         switch (whichlight) {
  40             case 2:
  41                 lightselect = GL_LIGHT2;
  42                 break;
  43             case 3:
  44                 lightselect = GL_LIGHT3;
  45                 break;
  46             case 4:
  47                 lightselect = GL_LIGHT4;
  48                 break;
  49             case 5:
  50                 lightselect = GL_LIGHT5;
  51                 break;
  52             case 6:
  53                 lightselect = GL_LIGHT6;
  54                 break;
  55             case 7:
  56                 lightselect = GL_LIGHT7;
  57                 break;
  58         }
  59
  60         GLfloat LightAmbient[] = { 0, 0, 0, 1.0f };
  61         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  62         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  63
  64         glLightfv(lightselect, GL_QUADRATIC_ATTENUATION, qattenuation);
  65         glLightfv(lightselect, GL_POSITION, LightPosition);
  66         glLightfv(lightselect, GL_AMBIENT, LightAmbient);
  67         glLightfv(lightselect, GL_DIFFUSE, LightDiffuse);
  68         glEnable(lightselect);
  69     }
  70 }