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 void Displayer::generateSignList (   )
  68 {
  69   GLubyte *subtextures[std::max(
  70       DC_NUMBER_SMALL_SIGN_SUBTEXTURES,
  71       DC_NUMBER_LARGE_SIGN_SUBTEXTURES)];
  72
  73   // load and pack the small sign textures
  74
  75   glGenTextures(1, &sign_small_texture);
  76
  77   glBindTexture(GL_TEXTURE_2D, sign_small_texture);
  78
  79   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  80   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  81   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  82   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  83
  84   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
  85     subtextures[n] = TextureLoader::loadAlphaTGA(sign_small_subtexture_files[n],
  86      DC_SIGN_SMALL_SUBTEX_LENGTH_S, DC_SIGN_SMALL_SUBTEX_LENGTH_T);
  87
  88   GLubyte small_texture[DC_SIGN_SMALL_TEX_LENGTH_S][DC_SIGN_SMALL_TEX_LENGTH_T];
  89
  90   for (int s = 0; s < DC_SIGN_SMALL_TEX_LENGTH_S; s++)
  91     for (int t = 0; t < DC_SIGN_SMALL_TEX_LENGTH_T; t++) {
  92       unsigned n = (s / DC_SIGN_SMALL_SUBTEX_LENGTH_S)
  93        * DC_SIGN_SMALL_TEX_GRID_LENGTH_T + t / DC_SIGN_SMALL_SUBTEX_LENGTH_T;
  94
  95       if (n >= DC_NUMBER_SMALL_SIGN_SUBTEXTURES)
  96         small_texture[s][t] = 0;
  97       else
  98         small_texture[s][t] = subtextures[n][s % DC_SIGN_SMALL_SUBTEX_LENGTH_S
  99          * DC_SIGN_SMALL_SUBTEX_LENGTH_T + t % DC_SIGN_SMALL_SUBTEX_LENGTH_T];
 100     }
 101
 102   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_SMALL_TEX_LENGTH_T,
 103    DC_SIGN_SMALL_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 104    small_texture);
 105
 106   for (int n = DC_NUMBER_SMALL_SIGN_SUBTEXTURES; n--; )
 107     if (subtextures[n] != null) {
 108       delete [] subtextures[n];
 109       subtextures[n] = null;
 110     }
 111
 112   // load and pack the large sign textures
 113
 114   glGenTextures(1, &sign_large_texture);
 115
 116   glBindTexture(GL_TEXTURE_2D, sign_large_texture);
 117
 118   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 119   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 120   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 121   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 122
 123   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 124     subtextures[n] = TextureLoader::loadAlphaTGA(sign_large_subtexture_files[n],
 125      DC_SIGN_LARGE_SUBTEX_LENGTH_S, DC_SIGN_LARGE_SUBTEX_LENGTH_T);
 126
 127   GLubyte large_texture[DC_SIGN_LARGE_TEX_LENGTH_S][DC_SIGN_LARGE_TEX_LENGTH_T];
 128
 129   for (int s = 0; s < DC_SIGN_LARGE_TEX_LENGTH_S; s++)
 130     for (int t = 0; t < DC_SIGN_LARGE_TEX_LENGTH_T; t++) {
 131       unsigned n = (s / DC_SIGN_LARGE_SUBTEX_LENGTH_S)
 132        * DC_SIGN_LARGE_TEX_GRID_LENGTH_T + t / DC_SIGN_LARGE_SUBTEX_LENGTH_T;
 133
 134       if (n >= DC_NUMBER_LARGE_SIGN_SUBTEXTURES)
 135         large_texture[s][t] = 0;
 136       else
 137         large_texture[s][t] = subtextures[n][s % DC_SIGN_LARGE_SUBTEX_LENGTH_S
 138          * DC_SIGN_LARGE_SUBTEX_LENGTH_T + t % DC_SIGN_LARGE_SUBTEX_LENGTH_T];
 139     }
 140
 141   glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DC_SIGN_LARGE_TEX_LENGTH_T,
 142    DC_SIGN_LARGE_TEX_LENGTH_S, GL_FALSE, GL_ALPHA, GL_UNSIGNED_BYTE,
 143    large_texture);
 144
 145   for (int n = DC_NUMBER_LARGE_SIGN_SUBTEXTURES; n--; )
 146     if (subtextures[n] != null) {
 147       delete [] subtextures[n];
 148       subtextures[n] = null;
 149     }
 150
 151   // build the sign display lists
 152
 153   sign_small_list = glGenLists(1);
 154
 155   glNewList(sign_small_list, GL_COMPILE);
 156     glBegin(GL_TRIANGLE_STRIP);
 157
 158       glTexCoord2f(0.0f, DC_SIGN_SMALL_SUBTEX_COORD_S);
 159       glVertex3f(-DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 160       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, DC_SIGN_SMALL_SUBTEX_COORD_S);
 161       glVertex3f(DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 162       glTexCoord2f(0.0f, 0.0f);
 163       glVertex3f(-DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 164       glTexCoord2f(DC_SIGN_SMALL_SUBTEX_COORD_T, 0.0f);
 165       glVertex3f(DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 166
 167     glEnd();
 168   glEndList();
 169
 170   sign_large_list = glGenLists(1);
 171
 172   glNewList(sign_large_list, GL_COMPILE);
 173     glBegin(GL_TRIANGLE_STRIP);
 174
 175       glTexCoord2f(0.0f, DC_SIGN_LARGE_SUBTEX_COORD_S);
 176       glVertex3f(-2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 177       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, DC_SIGN_LARGE_SUBTEX_COORD_S);
 178       glVertex3f(2.0f * DC_SIGN_LENGTH, -DC_SIGN_LENGTH, 0.0f);
 179       glTexCoord2f(0.0f, 0.0f);
 180       glVertex3f(-2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 181       glTexCoord2f(DC_SIGN_LARGE_SUBTEX_COORD_T, 0.0f);
 182       glVertex3f(2.0f * DC_SIGN_LENGTH, DC_SIGN_LENGTH, 0.0f);
 183
 184     glEnd();
 185   glEndList();
 186 }