1 /*
2 * level_lights.cxx
3 * Daniel Nelson - 10/13/0
4 *
5 * Copyright (C) 2000 Daniel Nelson
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program 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 this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 * Daniel Nelson - aluminumangel.org
22 * 174 W. 18th Ave.
23 * Columbus, OH 43210
24 *
25 * Generates the list for the level lights.
26 */
27
28 #include <GL/glut.h>
29
30 #include "glext.h"
31
32 using namespace std;
33
34 #include "Game.h"
35 #include "Displayer.h"
36
37 // level lights' geometric constants
38 #define LG_A (0.96f)
39 #define LG_B (0.36f)
40 #define LG_C (0.3f)
41 #define LG_D (0.72f)
42
43 GLuint Displayer::level_light_list;
44
generateLevelLights()45 void Displayer::generateLevelLights ( )
46 {
47 level_light_list = glGenLists(1);
48
49 glNewList(level_light_list, GL_COMPILE);
50 glBegin(GL_TRIANGLES);
51
52 drawTriangle(0.0f, 0.0f, 0.0f + DC_EXTERNAL_OFFSET_Z,
53 LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z,
54 LG_A, LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z);
55
56 drawTriangle(LG_A, LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z,
57 LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z,
58 LG_A, -LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z);
59
60 drawTriangle(0.0f, 0.0f, 0.0f + DC_EXTERNAL_OFFSET_Z,
61 LG_A, -LG_B, 0.0f + DC_EXTERNAL_OFFSET_Z,
62 LG_D, 0.0f, LG_C + DC_EXTERNAL_OFFSET_Z);
63
64 glEnd();
65 glEndList();
66 }
67