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