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 #include "glext.h"
  32
  33 #include "TextureLoader.h"
  34 #include "Game.h"
  35 #include "Displayer.h"
  36
  37 GLuint Displayer::sign_small_list;
  38 GLuint Displayer::sign_large_list;
  39 GLuint Displayer::sign_small_texture;
  40 GLuint Displayer::sign_large_texture;
  41
  42 const char *sign_small_subtexture_files[DC_NUMBER_SMALL_SIGN_SUBTEXTURES]
  43  = { GC_DATA_DIRECTORY("sign_4.tga"),
  44      GC_DATA_DIRECTORY("sign_5.tga"),
  45      GC_DATA_DIRECTORY("sign_6.tga"),
  46      GC_DATA_DIRECTORY("sign_7.tga"),
  47      GC_DATA_DIRECTORY("sign_8.tga"),
  48      GC_DATA_DIRECTORY("sign_9.tga") };
  49
  50 const char *sign_large_subtexture_files[DC_NUMBER_LARGE_SIGN_SUBTEXTURES]
  51  = { GC_DATA_DIRECTORY("sign_10.tga"),
  52      GC_DATA_DIRECTORY("sign_11.tga"),
  53      GC_DATA_DIRECTORY("sign_12.tga"),
  54      GC_DATA_DIRECTORY("sign_x2.tga"),
  55      GC_DATA_DIRECTORY("sign_x3.tga"),
  56      GC_DATA_DIRECTORY("sign_x4.tga"),
  57      GC_DATA_DIRECTORY("sign_x5.tga"),
  58      GC_DATA_DIRECTORY("sign_x6.tga"),
  59      GC_DATA_DIRECTORY("sign_x7.tga"),
  60      GC_DATA_DIRECTORY("sign_x8.tga"),
  61      GC_DATA_DIRECTORY("sign_x9.tga"),
  62      GC_DATA_DIRECTORY("sign_x10.tga"),
  63      GC_DATA_DIRECTORY("sign_x11.tga"),
  64      GC_DATA_DIRECTORY("sign_x12.tga"),
  65      GC_DATA_DIRECTORY("sign_bonus.tga") };
  66
  67
  68 #ifndef MAX
  69 #define MAX(a, b)     ((a) > (b) ? (a) : (b))
  70 #endif
  71
  72 void Displayer::generateSignList (   )
  73 {
  74   GLubyte *subtextures[MAX(
  75       DC_NUMBER_SMALL_SIGN_SUBTEXTURES,
  76       DC_NUMBER_LARGE_SIGN_SUBTEXTURES)];
  77
  78   // load and pack the small sign textures
  79
  80   glGenTextures(1, &sign_small_texture);
  81
  82   glBindTexture(GL_TEXTURE_2D, sign_small_texture);
  83
  84   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  85   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  86   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  87   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  88
  89   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
  90     subtextures[n] = TextureLoader::loadImageAlpha(sign_small_subtexture_files[n],
  91      DC_SIGN_SMALL_SUBTEX_LENGTH_S, DC_SIGN_SMALL_SUBTEX_LENGTH_T);
  92
  93   GLubyte small_texture[DC_SIGN_SMALL_TEX_LENGTH_S][DC_SIGN_SMALL_TEX_LENGTH_T];
  94
  95   for (int s = 0; s < DC_SIGN_SMALL_TEX_LENGTH_S; s++)
  96     for (int t = 0; t < DC_SIGN_SMALL_TEX_LENGTH_T; t++) {
  97       unsigned n = (s / DC_SIGN_SMALL_SUBTEX_LENGTH_S)
  98        * DC_SIGN_SMALL_TEX_GRID_LENGTH_T + t / DC_SIGN_SMALL_SUBTEX_LENGTH_T;
  99
 100       if (n >= DC_NUMBER_SMALL_SIGN_SUBTEXTURES)
 101         small_texture[s][t] = 0;
 102       else
 103         small_texture[s][t] = subtextures[n][s % DC_SIGN_SMALL_SUBTEX_LENGTH_S
 104          * DC_SIGN_SMALL_SUBTEX_LENGTH_T + t % DC_SIGN_SMALL_SUBTEX_LENGTH_T];
 105     }
 106
 107   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_SMALL_TEX_LENGTH_T,
 108    DC_SIGN_SMALL_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 109    small_texture);
 110
 111   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
 112     if (subtextures[n] != null) {
 113       delete [] subtextures[n];
 114       subtextures[n] = null;
 115     }
 116
 117   // load and pack the large sign textures
 118
 119   glGenTextures(1, &sign_large_texture);
 120
 121   glBindTexture(GL_TEXTURE_2D, sign_large_texture);
 122
 123   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 124   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 125   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 126   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 127
 128   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 129     subtextures[n] = TextureLoader::loadImageAlpha(sign_large_subtexture_files[n],
 130      DC_SIGN_LARGE_SUBTEX_LENGTH_S, DC_SIGN_LARGE_SUBTEX_LENGTH_T);
 131
 132   GLubyte large_texture[DC_SIGN_LARGE_TEX_LENGTH_S][DC_SIGN_LARGE_TEX_LENGTH_T];
 133
 134   for (int s = 0; s < DC_SIGN_LARGE_TEX_LENGTH_S; s++)
 135     for (int t = 0; t < DC_SIGN_LARGE_TEX_LENGTH_T; t++) {
 136       unsigned n = (s / DC_SIGN_LARGE_SUBTEX_LENGTH_S)
 137        * DC_SIGN_LARGE_TEX_GRID_LENGTH_T + t / DC_SIGN_LARGE_SUBTEX_LENGTH_T;
 138
 139       if (n >= DC_NUMBER_LARGE_SIGN_SUBTEXTURES)
 140         large_texture[s][t] = 0;
 141       else
 142         large_texture[s][t] = subtextures[n][s % DC_SIGN_LARGE_SUBTEX_LENGTH_S
 143          * DC_SIGN_LARGE_SUBTEX_LENGTH_T + t % DC_SIGN_LARGE_SUBTEX_LENGTH_T];
 144     }
 145
 146   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_LARGE_TEX_LENGTH_T,
 147    DC_SIGN_LARGE_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 148    large_texture);
 149
 150   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 151     if (subtextures[n] != null) {
 152       delete [] subtextures[n];
 153       subtextures[n] = null;
 154     }
 155
 156   // build the sign display lists
 157
 158   sign_small_list = glGenLists(1);
 159
 160   glNewList(sign_small_list, GL_COMPILE);
 161     glBegin(GL_TRIANGLE_STRIP);
 162
 163       glTexCoord2f(0.0f, DC_SIGN_SMALL_SUBTEX_COORD_S);
 164       glVertex3f(-DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 165       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, DC_SIGN_SMALL_SUBTEX_COORD_S);
 166       glVertex3f(DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 167       glTexCoord2f(0.0f, 0.0f);
 168       glVertex3f(-DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 169       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, 0.0f);
 170       glVertex3f(DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 171
 172     glEnd();
 173   glEndList();
 174
 175   sign_large_list = glGenLists(1);
 176
 177   glNewList(sign_large_list, GL_COMPILE);
 178     glBegin(GL_TRIANGLE_STRIP);
 179
 180       glTexCoord2f(0.0f, DC_SIGN_LARGE_SUBTEX_COORD_S);
 181       glVertex3f(-2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 182       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, DC_SIGN_LARGE_SUBTEX_COORD_S);
 183       glVertex3f(2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 184       glTexCoord2f(0.0f, 0.0f);
 185       glVertex3f(-2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 186       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, 0.0f);
 187       glVertex3f(2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 188
 189     glEnd();
 190   glEndList();
 191 }