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 modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 Lugaru 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.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with Lugaru.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 /**> HEADER FILES <**/
  21 #include "Lights.h"
  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_QUADRATIC_ATTENUATION, qattenuation);
  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 }
  73
  74 void SetUpMainLight(Light* whichsource, int whichlight, float ambientr, float ambientg, float ambientb)
  75 {
  76     static float qattenuation[] = {0.0f};
  77
  78     //Initialize lights
  79
  80     if (whichlight == 0) {
  81         GLfloat LightAmbient[] = { ambientr, ambientg, ambientb, 1.0f};
  82         GLfloat LightDiffuse[] = { whichsource->color[0], whichsource->color[1], whichsource->color[2], 1.0f };
  83         GLfloat LightPosition[] = { whichsource->location.x, whichsource->location.y, whichsource->location.z, 1.0f };
  84
  85         glLightfv(GL_LIGHT0, GL_QUADRATIC_ATTENUATION, qattenuation);
  86         glLightfv(GL_LIGHT0, GL_POSITION, LightPosition);
  87         glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
  88         glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
  89         glEnable(GL_LIGHT0);
  90     }
  91 }