src/obj_sign.cxx

   1 /*
   2  * sign.cxx
   3  * Daniel Nelson - 9/14/0
   4  *
   5  * Copyright (C) 2000  Daniel Nelson
   6  * Copyright (C) 2004  Andrew Sayman
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  *
  22  * Daniel Nelson - aluminumangel.org
  23  * 174 W. 18th Ave.
  24  * Columbus, OH  43210
  25  *
  26  * Generates the display list and textures for the reward signs.
  27  */
  28
  29 #include <GL/glut.h>
  30
  31 #ifndef _WIN32
  32 #else
  33 #  include <glext.h>
  34 #endif
  35
  36 using namespace std;
  37
  38 #include "TextureLoader.h"
  39 #include "Game.h"
  40 #include "Displayer.h"
  41
  42 GLuint Displayer::sign_small_list;
  43 GLuint Displayer::sign_large_list;
  44 GLuint Displayer::sign_small_texture;
  45 GLuint Displayer::sign_large_texture;
  46
  47 const char *sign_small_subtexture_files[DC_NUMBER_SMALL_SIGN_SUBTEXTURES]
  48  = { GC_DATA_DIRECTORY("sign_4.tga"),
  49      GC_DATA_DIRECTORY("sign_5.tga"),
  50      GC_DATA_DIRECTORY("sign_6.tga"),
  51      GC_DATA_DIRECTORY("sign_7.tga"),
  52      GC_DATA_DIRECTORY("sign_8.tga"),
  53      GC_DATA_DIRECTORY("sign_9.tga") };
  54
  55 const char *sign_large_subtexture_files[DC_NUMBER_LARGE_SIGN_SUBTEXTURES]
  56  = { GC_DATA_DIRECTORY("sign_10.tga"),
  57      GC_DATA_DIRECTORY("sign_11.tga"),
  58      GC_DATA_DIRECTORY("sign_12.tga"),
  59      GC_DATA_DIRECTORY("sign_x2.tga"),
  60      GC_DATA_DIRECTORY("sign_x3.tga"),
  61      GC_DATA_DIRECTORY("sign_x4.tga"),
  62      GC_DATA_DIRECTORY("sign_x5.tga"),
  63      GC_DATA_DIRECTORY("sign_x6.tga"),
  64      GC_DATA_DIRECTORY("sign_x7.tga"),
  65      GC_DATA_DIRECTORY("sign_x8.tga"),
  66      GC_DATA_DIRECTORY("sign_x9.tga"),
  67      GC_DATA_DIRECTORY("sign_x10.tga"),
  68      GC_DATA_DIRECTORY("sign_x11.tga"),
  69      GC_DATA_DIRECTORY("sign_x12.tga"),
  70      GC_DATA_DIRECTORY("sign_bonus.tga") };
  71
  72 void Displayer::generateSignList (   )
  73 {
  74   GLubyte *subtextures
  75    [max(DC_NUMBER_SMALL_SIGN_SUBTEXTURES, DC_NUMBER_LARGE_SIGN_SUBTEXTURES)];
  76
  77   // load and pack the small sign textures
  78
  79   glGenTextures(1, &sign_small_texture);
  80
  81   glBindTexture(GL_TEXTURE_2D, sign_small_texture);
  82
  83   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  84   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  85   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  86   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  87
  88   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
  89     subtextures[n] = TextureLoader::loadAlphaTGA(sign_small_subtexture_files[n],
  90      DC_SIGN_SMALL_SUBTEX_LENGTH_S, DC_SIGN_SMALL_SUBTEX_LENGTH_T);
  91
  92   GLubyte small_texture[DC_SIGN_SMALL_TEX_LENGTH_S][DC_SIGN_SMALL_TEX_LENGTH_T];
  93
  94   for (int s = 0; s < DC_SIGN_SMALL_TEX_LENGTH_S; s++)
  95     for (int t = 0; t < DC_SIGN_SMALL_TEX_LENGTH_T; t++) {
  96       unsigned n = (s / DC_SIGN_SMALL_SUBTEX_LENGTH_S)
  97        * DC_SIGN_SMALL_TEX_GRID_LENGTH_T + t / DC_SIGN_SMALL_SUBTEX_LENGTH_T;
  98
  99       if (n >= DC_NUMBER_SMALL_SIGN_SUBTEXTURES)
 100         small_texture[s][t] = 0;
 101       else
 102         small_texture[s][t] = subtextures[n][s % DC_SIGN_SMALL_SUBTEX_LENGTH_S
 103          * DC_SIGN_SMALL_SUBTEX_LENGTH_T + t % DC_SIGN_SMALL_SUBTEX_LENGTH_T];
 104     }
 105
 106   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_SMALL_TEX_LENGTH_T,
 107    DC_SIGN_SMALL_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 108    small_texture);
 109
 110   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
 111     if (subtextures[n] != null) {
 112       delete [] subtextures[n];
 113       subtextures[n] = null;
 114     }
 115
 116   // load and pack the large sign textures
 117
 118   glGenTextures(1, &sign_large_texture);
 119
 120   glBindTexture(GL_TEXTURE_2D, sign_large_texture);
 121
 122   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 123   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 124   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 125   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 126
 127   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 128     subtextures[n] = TextureLoader::loadAlphaTGA(sign_large_subtexture_files[n],
 129      DC_SIGN_LARGE_SUBTEX_LENGTH_S, DC_SIGN_LARGE_SUBTEX_LENGTH_T);
 130
 131   GLubyte large_texture[DC_SIGN_LARGE_TEX_LENGTH_S][DC_SIGN_LARGE_TEX_LENGTH_T];
 132
 133   for (int s = 0; s < DC_SIGN_LARGE_TEX_LENGTH_S; s++)
 134     for (int t = 0; t < DC_SIGN_LARGE_TEX_LENGTH_T; t++) {
 135       unsigned n = (s / DC_SIGN_LARGE_SUBTEX_LENGTH_S)
 136        * DC_SIGN_LARGE_TEX_GRID_LENGTH_T + t / DC_SIGN_LARGE_SUBTEX_LENGTH_T;
 137
 138       if (n >= DC_NUMBER_LARGE_SIGN_SUBTEXTURES)
 139         large_texture[s][t] = 0;
 140       else
 141         large_texture[s][t] = subtextures[n][s % DC_SIGN_LARGE_SUBTEX_LENGTH_S
 142          * DC_SIGN_LARGE_SUBTEX_LENGTH_T + t % DC_SIGN_LARGE_SUBTEX_LENGTH_T];
 143     }
 144
 145   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_LARGE_TEX_LENGTH_T,
 146    DC_SIGN_LARGE_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 147    large_texture);
 148
 149   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 150     if (subtextures[n] != null) {
 151       delete [] subtextures[n];
 152       subtextures[n] = null;
 153     }
 154
 155   // build the sign display lists
 156
 157   sign_small_list = glGenLists(1);
 158
 159   glNewList(sign_small_list, GL_COMPILE);
 160     glBegin(GL_TRIANGLE_STRIP);
 161
 162       glTexCoord2f(0.0f, DC_SIGN_SMALL_SUBTEX_COORD_S);
 163       glVertex3f(-DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 164       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, DC_SIGN_SMALL_SUBTEX_COORD_S);
 165       glVertex3f(DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 166       glTexCoord2f(0.0f, 0.0f);
 167       glVertex3f(-DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 168       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, 0.0f);
 169       glVertex3f(DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 170
 171     glEnd();
 172   glEndList();
 173
 174   sign_large_list = glGenLists(1);
 175
 176   glNewList(sign_large_list, GL_COMPILE);
 177     glBegin(GL_TRIANGLE_STRIP);
 178
 179       glTexCoord2f(0.0f, DC_SIGN_LARGE_SUBTEX_COORD_S);
 180       glVertex3f(-2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 181       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, DC_SIGN_LARGE_SUBTEX_COORD_S);
 182       glVertex3f(2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 183       glTexCoord2f(0.0f, 0.0f);
 184       glVertex3f(-2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 185       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, 0.0f);
 186       glVertex3f(2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 187
 188     glEnd();
 189   glEndList();
 190 }