src/DrawExternalCandy.cxx

   1 /*
   2  * DrawExternalCandy.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  * Draws everything dumb outside of the play area.
  26  */
  27
  28 #include <GL/glut.h>
  29
  30 #include "glext.h"
  31
  32 #include "Game.h"
  33 #include "Displayer.h"
  34 #include "MetaState.h"
  35 #include "Clock.h"
  36 #include "Score.h"
  37 #include "LoseBar.h"
  38
  39 inline void Displayer::drawDigit ( GLfloat alpha )
  40 {
  41   glColor4f(0.3f, 0.3f, 1.0f, alpha);
  42
  43   glBegin(GL_TRIANGLE_STRIP);
  44
  45     glTexCoord2f(0.0f, 1.0f);
  46     glVertex3f(-DC_CLOCK_DIGIT_LENGTH, -DC_CLOCK_DIGIT_LENGTH, 0.0f);
  47     glColor4f(0.5f, 0.5f, 1.0f, alpha);
  48     glTexCoord2f(1.0f, 1.0f);
  49     glVertex3f(DC_CLOCK_DIGIT_LENGTH, -DC_CLOCK_DIGIT_LENGTH, 0.0f);
  50     glColor4f(0.5f, 0.5f, 1.0f, alpha);
  51     glTexCoord2f(0.0f, 0.0f);
  52     glVertex3f(-DC_CLOCK_DIGIT_LENGTH, DC_CLOCK_DIGIT_LENGTH, 0.0f);
  53     glColor4f(1.0f, 1.0f, 1.0f, alpha);
  54     glTexCoord2f(1.0f, 0.0f);
  55     glVertex3f(DC_CLOCK_DIGIT_LENGTH, DC_CLOCK_DIGIT_LENGTH, 0.0f);
  56
  57   glEnd();
  58 }
  59
  60 inline void Displayer::drawLeftBar ( GLfloat b, GLfloat t, GLfloat color[3] )
  61 {
  62   if (t < DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f) return;
  63
  64   glBegin(GL_TRIANGLE_STRIP);
  65
  66     glColor3fv(color);
  67     glTexCoord2f(0.0f, 0.0f);
  68     glVertex3f(-DC_LOSEBAR_LENGTH / 2.0f, DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
  69     glTexCoord2f(t - (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 0.0f);
  70     glVertex3f(b - (DC_LOSEBAR_FADE_LENGTH / 2.0f), DC_LOSEBAR_HEIGHT / 2,
  71      0.0f);
  72     glTexCoord2f(0.0f, 1.0f);
  73     glVertex3f(-DC_LOSEBAR_LENGTH / 2.0f, -DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
  74     glTexCoord2f(t - (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 1.0f);
  75     glVertex3f(b - (DC_LOSEBAR_FADE_LENGTH / 2.0f), -DC_LOSEBAR_HEIGHT / 2.0f,
  76      0.0f);
  77
  78   glEnd();
  79 }
  80
  81 inline void Displayer::drawRightBar ( GLfloat b, GLfloat t, GLfloat color[3] )
  82 {
  83   if (t > 1.0f - DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f) return;
  84
  85   glBegin(GL_TRIANGLE_STRIP);
  86
  87     glColor3fv(color);
  88     glTexCoord2f(t + (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 0.0f);
  89     glVertex3f(b + (DC_LOSEBAR_FADE_LENGTH / 2.0f), DC_LOSEBAR_HEIGHT / 2.0f,
  90      0.0f);
  91     glTexCoord2f(1.0f, 0.0f);
  92     glVertex3f(DC_LOSEBAR_LENGTH / 2.0f, DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
  93     glTexCoord2f(t + (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 1.0f);
  94     glVertex3f(b + (DC_LOSEBAR_FADE_LENGTH / 2.0f), -DC_LOSEBAR_HEIGHT / 2.0f,
  95      0.0f);
  96     glTexCoord2f(1.0f, 1.0f);
  97     glVertex3f(DC_LOSEBAR_LENGTH / 2.0f, -DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
  98
  99   glEnd();
 100 }
 101
 102 inline void Displayer::drawCenterBar ( GLfloat b, GLfloat t, GLfloat color1[3],
 103  GLfloat color2[3] )
 104 {
 105   glBegin(GL_TRIANGLE_STRIP);
 106
 107     glColor3fv(color1);
 108     glTexCoord2f(t - (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 0.0f);
 109     glVertex3f(b - (DC_LOSEBAR_FADE_LENGTH / 2.0f), DC_LOSEBAR_HEIGHT / 2.0f,
 110      0.0f);
 111     glColor3fv(color2);
 112     glTexCoord2f(t + (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 0.0f);
 113     glVertex3f(b + (DC_LOSEBAR_FADE_LENGTH / 2.0f), DC_LOSEBAR_HEIGHT / 2.0f,
 114      0.0f);
 115     glColor3fv(color1);
 116     glTexCoord2f(t - (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 1.0f);
 117     glVertex3f(b - (DC_LOSEBAR_FADE_LENGTH / 2.0f), -DC_LOSEBAR_HEIGHT / 2.0f,
 118      0.0f);
 119     glColor3fv(color2);
 120     glTexCoord2f(t + (DC_LOSEBAR_FADE_TEX_LENGTH / 2.0f), 1.0f);
 121     glVertex3f(b + (DC_LOSEBAR_FADE_LENGTH / 2.0f), -DC_LOSEBAR_HEIGHT / 2.0f,
 122      0.0f);
 123
 124   glEnd();
 125 }
 126
 127 inline void Displayer::drawFullBar ( GLfloat color[3] )
 128 {
 129   glBegin(GL_TRIANGLE_STRIP);
 130
 131     glColor3fv(color);
 132     glTexCoord2f(0.0f, 0.0f);
 133     glVertex3f(-DC_LOSEBAR_LENGTH / 2.0f, DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
 134     glTexCoord2f(1.0f, 0.0f);
 135     glVertex3f(DC_LOSEBAR_LENGTH / 2.0f, DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
 136     glTexCoord2f(0.0f, 1.0f);
 137     glVertex3f(-DC_LOSEBAR_LENGTH / 2.0f, -DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
 138     glTexCoord2f(1.0f, 1.0f);
 139     glVertex3f(DC_LOSEBAR_LENGTH / 2.0f, -DC_LOSEBAR_HEIGHT / 2.0f, 0.0f);
 140
 141   glEnd();
 142 }
 143
 144 void Displayer::drawExternalCandy (   )
 145 {
 146   int texture_bound;
 147
 148   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_BLEND);
 149
 150   GLfloat b = (DC_LOSEBAR_LENGTH + DC_LOSEBAR_FADE_LENGTH)
 151    * (LoseBar::bar - 0.5f);
 152   GLfloat t = LoseBar::bar * (1.0f + DC_LOSEBAR_FADE_TEX_LENGTH)
 153    - 0.5f * DC_LOSEBAR_FADE_TEX_LENGTH;
 154
 155   glBindTexture(GL_TEXTURE_2D, losebar_texture);
 156
 157   glPushMatrix();
 158
 159     glTranslatef(DC_LEFT_EXTERNAL_CENTER, DC_LOSEBAR_OFFSET_Y,
 160      DC_EXTERNAL_OFFSET_Z);
 161
 162     GLfloat color1[3], color2[3];
 163
 164     float fade;
 165     switch (LoseBar::state) {
 166     case LB_INACTIVE:
 167       color1[0] = DC_LOSEBAR_INACTIVE_RED;
 168       color1[1] = DC_LOSEBAR_INACTIVE_GREEN;
 169       color1[2] = DC_LOSEBAR_INACTIVE_BLUE;
 170
 171       drawFullBar(color1);
 172       break;
 173
 174     case LB_LOW_ALERT:
 175       color1[0] = DC_LOSEBAR_LOW_ALERT_RED;
 176       color1[1] = DC_LOSEBAR_LOW_ALERT_GREEN;
 177       color1[2] = DC_LOSEBAR_LOW_ALERT_BLUE;
 178
 179       color2[0] = DC_LOSEBAR_INACTIVE_RED;
 180       color2[1] = DC_LOSEBAR_INACTIVE_GREEN;
 181       color2[2] = DC_LOSEBAR_INACTIVE_BLUE;
 182
 183       drawLeftBar(b, t, color1);
 184       drawCenterBar(b, t, color1, color2);
 185       drawRightBar(b, t, color2);
 186       break;
 187
 188     case LB_HIGH_ALERT:
 189       color1[0] = DC_LOSEBAR_HIGH_ALERT_RED;
 190       color1[1] = DC_LOSEBAR_HIGH_ALERT_GREEN;
 191       color1[2] = DC_LOSEBAR_HIGH_ALERT_BLUE;
 192
 193       color2[0] = DC_LOSEBAR_LOW_ALERT_RED;
 194       color2[1] = DC_LOSEBAR_LOW_ALERT_GREEN;
 195       color2[2] = DC_LOSEBAR_LOW_ALERT_BLUE;
 196
 197       drawLeftBar(b, t, color1);
 198       drawCenterBar(b, t, color1, color2);
 199       drawRightBar(b, t, color2);
 200       break;
 201
 202     case LB_FADE_LOW_TO_INACTIVE:
 203       fade = LoseBar::fade_timer * (1.0f / (GLfloat) DC_LOSEBAR_FADE_TIME);
 204
 205       color1[0] = DC_LOSEBAR_INACTIVE_RED
 206        + fade * (DC_LOSEBAR_LOW_ALERT_RED - DC_LOSEBAR_INACTIVE_RED);
 207       color1[1] = DC_LOSEBAR_INACTIVE_GREEN
 208        + fade * (DC_LOSEBAR_LOW_ALERT_GREEN - DC_LOSEBAR_INACTIVE_GREEN);
 209       color1[2] = DC_LOSEBAR_INACTIVE_BLUE
 210        + fade * (DC_LOSEBAR_LOW_ALERT_BLUE - DC_LOSEBAR_INACTIVE_BLUE);
 211
 212       color2[0] = DC_LOSEBAR_INACTIVE_RED;
 213       color2[1] = DC_LOSEBAR_INACTIVE_GREEN;
 214       color2[2] = DC_LOSEBAR_INACTIVE_BLUE;
 215
 216       drawLeftBar(b, t, color1);
 217       drawCenterBar(b, t, color1, color2);
 218       drawRightBar(b, t, color2);
 219       break;
 220
 221     case LB_FADE_HIGH_TO_INACTIVE:
 222       fade = LoseBar::fade_timer * (1.0f / (GLfloat) DC_LOSEBAR_FADE_TIME);
 223
 224       color1[0] = DC_LOSEBAR_INACTIVE_RED
 225        + fade * (DC_LOSEBAR_HIGH_ALERT_RED - DC_LOSEBAR_INACTIVE_RED);
 226       color1[1] = DC_LOSEBAR_INACTIVE_GREEN
 227        + fade * (DC_LOSEBAR_HIGH_ALERT_GREEN - DC_LOSEBAR_INACTIVE_GREEN);
 228       color1[2] = DC_LOSEBAR_INACTIVE_BLUE
 229        + fade * (DC_LOSEBAR_HIGH_ALERT_BLUE - DC_LOSEBAR_INACTIVE_BLUE);
 230
 231       color2[0] = DC_LOSEBAR_INACTIVE_RED
 232        + fade * (DC_LOSEBAR_LOW_ALERT_RED - DC_LOSEBAR_INACTIVE_RED);
 233       color2[1] = DC_LOSEBAR_INACTIVE_GREEN
 234        + fade * (DC_LOSEBAR_LOW_ALERT_GREEN - DC_LOSEBAR_INACTIVE_GREEN);
 235       color2[2] = DC_LOSEBAR_INACTIVE_BLUE
 236        + fade * (DC_LOSEBAR_LOW_ALERT_BLUE - DC_LOSEBAR_INACTIVE_BLUE);
 237
 238       drawLeftBar(b, t, color1);
 239       drawCenterBar(b, t, color1, color2);
 240       drawRightBar(b, t, color2);
 241       break;
 242
 243     case LB_FADE_RESET_HIGH:
 244       fade = LoseBar::fade_timer * (1.0f / (GLfloat) DC_LOSEBAR_FADE_TIME);
 245
 246       color1[0] = DC_LOSEBAR_LOW_ALERT_RED
 247        + fade * (DC_LOSEBAR_HIGH_ALERT_RED - DC_LOSEBAR_LOW_ALERT_RED);
 248       color1[1] = DC_LOSEBAR_LOW_ALERT_GREEN
 249        + fade * (DC_LOSEBAR_HIGH_ALERT_GREEN - DC_LOSEBAR_LOW_ALERT_GREEN);
 250       color1[2] = DC_LOSEBAR_LOW_ALERT_BLUE
 251        + fade * (DC_LOSEBAR_HIGH_ALERT_BLUE - DC_LOSEBAR_LOW_ALERT_BLUE);
 252
 253       color2[0] = DC_LOSEBAR_LOW_ALERT_RED;
 254       color2[1] = DC_LOSEBAR_LOW_ALERT_GREEN;
 255       color2[2] = DC_LOSEBAR_LOW_ALERT_BLUE;
 256
 257       drawLeftBar(b, t, color1);
 258       drawCenterBar(b, t, color1, color2);
 259       drawRightBar(b, t, color2);
 260       break;
 261     }
 262
 263   glPopMatrix();
 264
 265   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 266
 267   if ((!(MetaState::mode & CM_REALLY_LOW_GRAPHICS)) || (Game::state & GS_PAUSED) || (Game::state & GS_WON) || (Game::state & GS_LOST)) {
 268     // draw clock
 269     if ((MetaState::mode & (CM_SERVER | CM_CLIENT)) ||
 270         (MetaState::mode & (CM_AI))) {
 271
 272       glPushMatrix();
 273
 274         glTranslatef(DC_LEFT_EXTERNAL_CENTER - DC_CLOCK_DIGIT_OFFSET / 2,
 275          DC_CLOCK_OFFSET_Y, DC_EXTERNAL_OFFSET_Z);
 276
 277         glBindTexture(GL_TEXTURE_2D, clock_digit_textures[10]);
 278         drawDigit(1.0f);
 279
 280         glTranslatef(DC_CLOCK_CENTER_OFFSET / 2.0f
 281          + 3.0f * DC_CLOCK_DIGIT_OFFSET / 2.0f, 0.0f, 0.0f);
 282
 283         GLfloat alpha = Clock::tick * (1.0f / (GLfloat) GC_STEPS_PER_SECOND);
 284
 285         glBindTexture(GL_TEXTURE_2D, clock_digit_textures[Clock::digits[0]]);
 286         if (Clock::digits[0] != Clock::previous_digits[0]) {
 287           drawDigit(alpha);
 288           glBindTexture(GL_TEXTURE_2D,
 289            clock_digit_textures[Clock::previous_digits[0]]);
 290           drawDigit(1.0f - alpha);
 291           texture_bound = Clock::previous_digits[0];
 292         } else {
 293           drawDigit(1.0f);
 294           texture_bound = Clock::digits[0];
 295         }
 296
 297         glTranslatef(-DC_CLOCK_DIGIT_OFFSET, 0.0f, 0.0f);
 298
 299         if (Clock::digits[1] != texture_bound)
 300           glBindTexture(GL_TEXTURE_2D, clock_digit_textures[Clock::digits[1]]);
 301         if (Clock::digits[1] == Clock::previous_digits[1]) {
 302           drawDigit(1.0f);
 303           texture_bound = Clock::digits[1];
 304         } else {
 305           drawDigit(alpha);
 306           glBindTexture(GL_TEXTURE_2D,
 307            clock_digit_textures[Clock::previous_digits[1]]);
 308           drawDigit(1.0f - alpha);
 309           texture_bound = Clock::previous_digits[1];
 310         }
 311
 312         glTranslatef(-DC_CLOCK_DIGIT_OFFSET - DC_CLOCK_CENTER_OFFSET, 0.0f, 0.0f);
 313
 314         if (Clock::digits[2] != texture_bound)
 315           glBindTexture(GL_TEXTURE_2D, clock_digit_textures[Clock::digits[2]]);
 316         if (Clock::digits[2] == Clock::previous_digits[2]) {
 317           drawDigit(1.0f);
 318           texture_bound = Clock::digits[2];
 319         } else {
 320           drawDigit(alpha);
 321           glBindTexture(GL_TEXTURE_2D,
 322            clock_digit_textures[Clock::previous_digits[2]]);
 323           drawDigit(1.0f - alpha);
 324           texture_bound = Clock::previous_digits[2];
 325         }
 326
 327         if (Clock::digits[3] || Clock::previous_digits[3]) {
 328           glTranslatef(-DC_CLOCK_DIGIT_OFFSET, 0.0f, 0.0f);
 329
 330           if (Clock::digits[3] == Clock::previous_digits[3]) {
 331             if (texture_bound != Clock::digits[3])
 332               glBindTexture(GL_TEXTURE_2D,
 333                clock_digit_textures[Clock::digits[3]]);
 334             drawDigit(1.0f);
 335           } else {
 336             if (Clock::digits[3]) {
 337               if (texture_bound != Clock::digits[3])
 338                 glBindTexture(GL_TEXTURE_2D,
 339                  clock_digit_textures[Clock::digits[3]]);
 340               drawDigit(alpha);
 341               texture_bound = Clock::digits[3];
 342             }
 343             if (Clock::previous_digits[3]) {
 344               if (texture_bound != Clock::previous_digits[3])
 345                 glBindTexture(GL_TEXTURE_2D,
 346                  clock_digit_textures[Clock::previous_digits[3]]);
 347               drawDigit(1.0f - alpha);
 348             }
 349           }
 350         }
 351
 352       glPopMatrix();
 353
 354     // draw score
 355     } else {
 356
 357       glPushMatrix();
 358
 359         glTranslatef(DC_LEFT_EXTERNAL_CENTER + ((Score::n_digits_displayed - 1)
 360          * DC_CLOCK_DIGIT_OFFSET) / 2, DC_CLOCK_OFFSET_Y, DC_EXTERNAL_OFFSET_Z);
 361
 362         GLfloat alpha = 1.0f - (GLfloat) Score::fade_timer
 363          * Score::inverse_timer_start;
 364
 365         glBindTexture(GL_TEXTURE_2D,
 366          clock_digit_textures[Score::digits[0]]);
 367         texture_bound = Score::digits[0];
 368         drawDigit(alpha);
 369         if (Score::fade_timer && Score::previous_digits[0]
 370          != Score::digits[0]) {
 371           glBindTexture(GL_TEXTURE_2D,
 372            clock_digit_textures[Score::previous_digits[0]]);
 373           texture_bound = Score::previous_digits[0];
 374           drawDigit(1.0f - alpha);
 375         }
 376
 377         for (int n = 1; n < Score::n_digits_displayed; n++) {
 378           glTranslatef(-DC_CLOCK_DIGIT_OFFSET, 0.0f, 0.0f);
 379           if (texture_bound != Score::digits[n]) {
 380             glBindTexture(GL_TEXTURE_2D, clock_digit_textures[Score::digits[n]]);
 381             texture_bound = Score::digits[n];
 382           }
 383           if (Score::fade_timer && Score::previous_digits[n]
 384            != Score::digits[n]) {
 385             drawDigit(alpha);
 386             glBindTexture(GL_TEXTURE_2D,
 387              clock_digit_textures[Score::previous_digits[n]]);
 388             texture_bound = Score::previous_digits[n];
 389             drawDigit(1.0f - alpha);
 390           } else
 391             drawDigit(1.0f);
 392         }
 393
 394       glPopMatrix();
 395     }
 396   } else
 397     glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 398
 399   glDisable(GL_BLEND);
 400
 401   // draw logo
 402
 403   glBindTexture(GL_TEXTURE_2D, logo_texture);
 404   glCallList(logo_list);
 405
 406   // draw names
 407
 408   glPushMatrix();
 409     glBindTexture(GL_TEXTURE_2D, name_texture);
 410     glTranslatef(DC_LEFT_EXTERNAL_CENTER, DC_NAME_OFFSET_Y,
 411      DC_EXTERNAL_OFFSET_Z);
 412     glScalef(DC_NAME_SCALE, DC_NAME_SCALE, 1.0f);
 413     glCallList(message_2x1_list);
 414   glPopMatrix();
 415 }