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 /**> HEADER FILES <**/
  22 #include "Lights.h"
  23
  24 void SetUpLight(Light* whichsource, int whichlight)
  25 {
  26     static float qattenuation[] = {0.0002f};
  27
  28     //Initialize lights
  29     if (whichlight == 0) {
  30         GLfloat LightAmbient[] = { whichsource->ambient[0], whichsource->ambient[1], whichsource->ambient[2], 1.0f};
  31         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  32         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 0.0f };
  33
  34         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  35         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  36         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  37         glEnable(GL_LIGHT0);
  38     } else {
  39         GLenum lightselect = GL_LIGHT1;
  40         switch (whichlight) {
  41         case 2:
  42             lightselect = GL_LIGHT2;
  43             break;
  44         case 3:
  45             lightselect = GL_LIGHT3;
  46             break;
  47         case 4:
  48             lightselect = GL_LIGHT4;
  49             break;
  50         case 5:
  51             lightselect = GL_LIGHT5;
  52             break;
  53         case 6:
  54             lightselect = GL_LIGHT6;
  55             break;
  56         case 7:
  57             lightselect = GL_LIGHT7;
  58             break;
  59         }
  60
  61         GLfloat LightAmbient[] = { 0, 0, 0, 1.0f};
  62         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  63         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  64
  65         glLightfv(lightselect, GL_QUADRATIC_ATTENUATION, qattenuation);
  66         glLightfv(lightselect, GL_POSITION, LightPosition);
  67         glLightfv(lightselect, GL_AMBIENT, LightAmbient);
  68         glLightfv(lightselect, GL_DIFFUSE, LightDiffuse);
  69         glEnable(lightselect);
  70
  71     }
  72 }