Cockpit/hud.cxx

   1 /**************************************************************************
   2  * hud.cxx -- hud defines and prototypes
   3  *
   4  * Written by Michele America, started September 1997.
   5  *
   6  * Copyright (C) 1997  Michele F. America  - micheleamerica@geocities.com
   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 as
  10  * published by the Free Software Foundation; either version 2 of the
  11  * License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  * $Id$
  23  * (Log is kept at end of this file)
  24  **************************************************************************/
  25
  26
  27 #ifdef HAVE_CONFIG_H
  28 #  include <config.h>
  29 #endif
  30
  31 #ifdef HAVE_WINDOWS_H
  32 #  include <windows.h>
  33 #endif
  34
  35 #include <GL/glut.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38
  39 #ifdef HAVE_VALUES_H
  40 #  include <values.h>  // for MAXINT
  41 #endif
  42
  43 #include <Aircraft/aircraft.h>
  44 #include <Debug/fg_debug.h>
  45 #include <Include/fg_constants.h>
  46 #include <Math/fg_random.h>
  47 #include <Math/mat3.h>
  48 #include <Math/polar3d.h>
  49 #include <Scenery/scenery.hxx>
  50 #include <Time/fg_timer.hxx>
  51 #include <Weather/weather.h>
  52
  53 #include "hud.hxx"
  54
  55 #ifdef __sun__
  56 extern "C" {
  57   extern void *memmove(void *, const void *, size_t);
  58 }
  59 #endif
  60
  61
  62 // The following routines obtain information concerntin the aircraft's
  63 // current state and return it to calling instrument display routines.
  64 // They should eventually be member functions of the aircraft.
  65 //
  66
  67 //using namespace std;
  68 \r
  69 \rdeque< instr_item * > HUD_deque;
  70
  71 class locRECT {
  72   public:
  73     RECT rect;
  74
  75     locRECT( UINT left, UINT top, UINT right, UINT bottom);
  76     RECT get_rect(void) { return rect;}
  77 };
  78
  79 locRECT :: locRECT( UINT left, UINT top, UINT right, UINT bottom)
  80 {
  81   rect.left   =  left;
  82   rect.top    =  top;
  83   rect.right  =  right;
  84   rect.bottom =  bottom;
  85
  86 }
  87 // #define DEBUG
  88
  89 void drawOneLine( UINT x1, UINT y1, UINT x2, UINT y2)
  90 {
  91   glBegin(GL_LINES);
  92   glVertex2f(x1, y1);
  93   glVertex2f(x2, y2);
  94   glEnd();
  95 }
  96
  97 void drawOneLine( RECT &rect)
  98 {
  99   glBegin(GL_LINES);
 100   glVertex2f(rect.left, rect.top);
 101   glVertex2f(rect.right, rect.bottom);
 102   glEnd();
 103 }
 104
 105 //
 106 // The following code deals with painting the "instrument" on the display
 107 //
 108    /* textString - Bitmap font string */
 109
 110 void textString( int x, int y, char *msg, void *font ){
 111         glRasterPos2f(x, y);
 112         while (*msg) {
 113                 glutBitmapCharacter(font, *msg);
 114                 msg++;
 115     }
 116 }
 117
 118 /* strokeString - Stroke font string */
 119
 120 void strokeString(int x, int y, char *msg, void *font, float theta)
 121 {
 122 int xx;
 123 int yy;
 124
 125         glPushMatrix();
 126   glRotatef(theta * RAD_TO_DEG, 0.0, 0.0, 1.0);
 127   xx = x * cos(theta) + y * sin( theta );
 128   yy = y * cos(theta) - x * sin( theta );
 129         glTranslatef( xx, yy, 0);
 130         glScalef(.1, .1, 0.0);
 131         while (*msg) {
 132                 glutStrokeCharacter(font, *msg);
 133                 msg++;
 134         }
 135         glPopMatrix();
 136 }
 137
 138 //========================= End of Class Implementations===================
 139 // fgHUDInit
 140 //
 141 // Constructs a HUD object and then adds in instruments. At the present
 142 // the instruments are hard coded into the routine. Ultimately these need
 143 // to be defined by the aircraft's instrumentation records so that the
 144 // display for a Piper Cub doesn't show the speed range of a North American
 145 // mustange and the engine readouts of a B36!
 146 //
 147
 148 #define INSTRDEFS 21
 149
 150 int fgHUDInit( fgAIRCRAFT * /* current_aircraft */ )
 151 {
 152   instr_item *HIptr;
 153   int index;
 154
 155   fgPrintf( FG_COCKPIT, FG_INFO, "Initializing current aircraft HUD\n" );
 156
 157   HUD_deque.erase( HUD_deque.begin(), HUD_deque.end());  // empty the HUD deque
 158
 159 //  hud->code = 1;
 160 //  hud->status = 0;
 161
 162   // For now lets just hardcode the hud here.
 163   // In the future, hud information has to come from the same place
 164   // aircraft information came from.
 165
 166 //  fgHUDSetTimeMode( hud, NIGHT );
 167 //  fgHUDSetBrightness( hud, BRT_LIGHT );
 168
 169   index = 0;
 170
 171   do {
 172     switch ( index ) {
 173       case 0:     // TBI
 174         HIptr = (instr_item *) new fgTBI_instr( 300, 100, 60, 10 );
 175         break;
 176
 177       case 1:     // Artificial Horizon
 178         HIptr = (instr_item *) new HudLadder( 270, 195, 120, 180 );
 179         break;
 180
 181       case 2:    // KIAS
 182         HIptr = (instr_item *) new hud_card( 160,
 183                                              170,
 184                                               35,
 185                                              200,
 186                                              get_speed,
 187                                              HUDS_LEFT | HUDS_VERT,
 188                                              200.0, 0.0,
 189                                              1.0,
 190                                              10,  5,
 191                                              0,
 192                                              0,
 193                                              50.0,
 194                                              true);
 195
 196         break;
 197
 198       case 3:    // Angle of Attack
 199         HIptr = (instr_item *) new hud_card( 450,
 200                                              195,
 201                                               30,
 202                                              150,
 203                                              get_aoa,
 204                                              HUDS_LEFT | HUDS_VERT,
 205                                              50, -40,
 206                                              1.0,
 207                                              5,    1,
 208                                              0,
 209                                              1,
 210                                              21.0,
 211                                              true);
 212         break;
 213
 214       case 4:    // GYRO COMPASS
 215         HIptr = (instr_item *) new hud_card( 200,
 216                                              375,
 217                                              260,
 218                                               32,
 219                                              get_heading,
 220                                              HUDS_TOP,
 221                                              360, 0,
 222                                              1.0,
 223                                              10,   5,
 224                                              360,
 225                                              0,
 226                                              50,
 227                                              true);
 228         break;
 229
 230       case 5:    // AMSL
 231         HIptr = (instr_item *) new hud_card( 490,
 232                                              170,
 233                                               35,
 234                                              200,
 235                                              get_altitude,
 236                                              HUDS_RIGHT | HUDS_VERT,
 237                                              15000, 0,
 238                                              1.0,
 239                                              100,  25,
 240                                              0,
 241                                              0,
 242                                              250,
 243                                              true);
 244         break;
 245
 246       case 6:    // Digital KIAS
 247         HIptr = (instr_item *) new instr_label ( 160,
 248                                                  150,
 249                                                   40,
 250                                                   30,
 251                                                  get_speed,
 252                                                  "%5.0f",
 253                                                  NULL,
 254                                                  " Kts",
 255                                                  HUDS_TOP,
 256                                                  RIGHT_JUST,
 257                                                  SMALL,
 258                                                  0,
 259                                                  TRUE );
 260         break;
 261
 262       case 7:    // Digital Altimeter
 263         HIptr = (instr_item *) new instr_label ( 160,
 264                                                  135,
 265                                                   40,
 266                                                   10,
 267                                                  get_altitude,
 268                                                  "MSL  %5.0f",
 269                                                  NULL,
 270                                                  " m",
 271                                                  HUDS_TOP,
 272                                                  LEFT_JUST,
 273                                                  SMALL,
 274                                                  0,
 275                                                  TRUE );
 276         break;
 277
 278       case 8:    // Roll indication diagnostic
 279         HIptr = (instr_item *) new instr_label ( 160,
 280                                                  120,
 281                                                   40,
 282                                                   10,
 283                                                  get_roll,
 284                                                  "%5.2f",
 285                                                  " Roll",
 286                                                  " Deg",
 287                                                  HUDS_TOP,
 288                                                  RIGHT_JUST,
 289                                                  SMALL,
 290                                                  0,
 291                                                  TRUE );
 292         break;
 293
 294       case 9:    // Angle of attack diagnostic
 295         HIptr = (instr_item *) new instr_label ( 440,
 296                                                  150,
 297                                                   60,
 298                                                   10,
 299                                                  get_aoa,
 300                                                  "      %5.2f",
 301                                                  "AOA",
 302                                                  " Deg",
 303                                                  HUDS_TOP,
 304                                                  RIGHT_JUST,
 305                                                  SMALL,
 306                                                  0,
 307                                                  TRUE );
 308         break;
 309
 310       case 10:
 311         HIptr = (instr_item *) new instr_label ( 440,
 312                                                  135,
 313                                                   60,
 314                                                   10,
 315                                                  get_heading,
 316                                                  " %5.0f",
 317                                                  "Heading ",
 318                                                  " Deg",
 319                                                  HUDS_TOP,
 320                                                  RIGHT_JUST,
 321                                                  SMALL,
 322                                                  0,
 323                                                  TRUE );
 324         break;
 325
 326       case 11:
 327         HIptr = (instr_item *) new instr_label ( 440,
 328                                                  120,
 329                                                   60,
 330                                                   10,
 331                                                  get_sideslip,
 332                                                  "%5.2f",
 333                                                  "Sideslip ",
 334                                                  NULL,
 335                                                  HUDS_TOP,
 336                                                  RIGHT_JUST,
 337                                                  SMALL,
 338                                                  0,
 339                                                  TRUE );
 340         break;
 341
 342       case 12:
 343         HIptr = (instr_item *) new instr_label( 440,
 344                                                 100,
 345                                                  60,
 346                                                  10,
 347                                                 get_throttleval,
 348                                                 "%5.2f",
 349                                                 "Throttle ",
 350                                                 NULL,
 351                                                 HUDS_TOP,
 352                                                 RIGHT_JUST,
 353                                                 SMALL,
 354                                                 0,
 355                                                 TRUE );
 356         break;
 357
 358       case 13:
 359         HIptr = (instr_item *) new instr_label( 440,
 360                                                  85,
 361                                                  60,
 362                                                  10,
 363                                                 get_elevatorval,
 364                                                 "%5.2f",
 365                                                 "Elevator ",
 366                                                 NULL,
 367                                                 HUDS_TOP,
 368                                                 RIGHT_JUST,
 369                                                 SMALL,
 370                                                 0,
 371                                                 TRUE );
 372         break;
 373
 374       case 14:
 375         HIptr = (instr_item *) new instr_label( 440,
 376                                                  60,
 377                                                  60,
 378                                                  10,
 379                                                 get_aileronval,
 380                                                 "%5.2f",
 381                                                 "Aileron  ",
 382                                                 NULL,
 383                                                 HUDS_TOP,
 384                                                 RIGHT_JUST,
 385                                                 SMALL,
 386                                                 0,
 387                                                 TRUE );
 388         break;
 389
 390
 391       case 15:
 392         HIptr = (instr_item *) new instr_label( 10,
 393                                                 10,
 394                                                 60,
 395                                                 10,
 396                                                  get_frame_rate,
 397                                                 "%.1f",
 398                                                 "Frame rate = ",
 399                                                 NULL,
 400                                                 HUDS_TOP,
 401                                                 RIGHT_JUST,
 402                                                 SMALL,
 403                                                 0,
 404                                                 TRUE );
 405         break;
 406
 407       case 16:
 408         HIptr = (instr_item *) new instr_label( 10,
 409                                                 25,
 410                                                 90,
 411                                                 10,
 412                                                  get_vfc_ratio,
 413                                                 "%.2f",
 414                                                 "VFC Ratio = ",
 415                                                 NULL,
 416                                                 HUDS_TOP,
 417                                                 RIGHT_JUST,
 418                                                 SMALL,
 419                                                 0,
 420                                                 TRUE );
 421         break;
 422
 423       case 17:
 424         HIptr = (instr_item *) new instr_label( 10,
 425                                                 40,
 426                                                 90,
 427                                                 10,
 428                                                 get_fov,
 429                                                 "%.1f",
 430                                                 "FOV = ",
 431                                                 NULL,
 432                                                 HUDS_TOP,
 433                                                 RIGHT_JUST,
 434                                                 SMALL,
 435                                                 0,
 436                                                 TRUE );
 437         break;
 438       case 18:
 439         HIptr = (instr_item *) new  guage_instr(  50,            // x
 440                                                  200,            // y
 441                                                  100,            // width
 442                                                   20,            // height
 443                                                  get_aileronval, // data source
 444                                                  HUDS_BOTTOM,
 445                                                  100.0,
 446                                                  +1.0,
 447                                                  -1.0);
 448         break;
 449
 450       case 19:
 451         HIptr = (instr_item *) new  guage_instr(  90,             // x
 452                                                  225,             // y
 453                                                   20,             // width
 454                                                  100,             // height
 455                                                  get_elevatorval, // data source
 456                                                  HUDS_BOTH | HUDS_VERT,
 457                                                  100.0,           // Scale data
 458                                                   +1.0,           // Data Range
 459                                                   -1.0);
 460         break;
 461
 462       case 20:
 463         HIptr = (instr_item *) new  guage_instr(  50,             // x
 464                                                  350,             // y
 465                                                  100,             // width
 466                                                   20,             // height
 467                                                  get_rudderval,   // data source
 468                                                  HUDS_TOP,
 469                                                  100.0,
 470                                                  +1.0,
 471                                                  -1.0);
 472         break;
 473
 474       default:
 475         HIptr = 0;;
 476       }
 477     if( HIptr ) {                   // Anything to install?
 478       HUD_deque.insert( HUD_deque.begin(), HIptr);
 479       }
 480     index++;
 481     }
 482   while( HIptr );
 483
 484   return 0;  // For now. Later we may use this for an error code.
 485 }
 486
 487
 488 // fgUpdateHUD
 489 //
 490 // Performs a once around the list of calls to instruments installed in
 491 // the HUD object with requests for redraw. Kinda. It will when this is
 492 // all C++.
 493 //
 494 int global_day_night_switch = DAY;
 495
 496 void fgUpdateHUD( void ) {
 497   int i;
 498   int brightness;
 499 //  int day_night_sw = current_aircraft.controls->day_night_switch;
 500   int day_night_sw = global_day_night_switch;
 501   int hud_displays = HUD_deque.size();
 502   instr_item *pHUDInstr;
 503
 504   if( !hud_displays ) {  // Trust everyone, but ALWAYS cut the cards!
 505     return;
 506     }
 507
 508   pHUDInstr = HUD_deque[0];
 509   brightness = pHUDInstr->get_brightness();
 510 //  brightness = HUD_deque.at(0)->get_brightness();
 511
 512   glMatrixMode(GL_PROJECTION);
 513   glPushMatrix();
 514
 515   glLoadIdentity();
 516   gluOrtho2D(0, 640, 0, 480);
 517   glMatrixMode(GL_MODELVIEW);
 518   glPushMatrix();
 519   glLoadIdentity();
 520
 521   glColor3f(1.0, 1.0, 1.0);
 522   glIndexi(7);
 523
 524   glDisable(GL_DEPTH_TEST);
 525   glDisable(GL_LIGHTING);
 526
 527   glLineWidth(1);
 528
 529   for( i = hud_displays; i; --i) { // Draw everything
 530 //    if( HUD_deque.at(i)->enabled()) {
 531     pHUDInstr = HUD_deque[i - 1];
 532     if( pHUDInstr->enabled()) {
 533                                    // We should to respond to a dial instead
 534                                    // or as well to the of time of day. Of
 535                                    // course, we have no dial!
 536       if( day_night_sw == DAY) {
 537         switch (brightness) {
 538           case BRT_LIGHT:
 539             glColor3f (0.1, 0.9, 0.1);
 540             break;
 541
 542           case BRT_MEDIUM:
 543             glColor3f (0.1, 0.7, 0.0);
 544             break;
 545
 546           case BRT_DARK:
 547             glColor3f (0.0, 0.5, 0.0);
 548             }
 549           }
 550         else {
 551           if( day_night_sw == NIGHT) {
 552             switch (brightness) {
 553               case BRT_LIGHT:
 554                 glColor3f (0.9, 0.1, 0.1);
 555                 break;
 556
 557               case BRT_MEDIUM:
 558                 glColor3f (0.7, 0.0, 0.1);
 559                 break;
 560
 561               case BRT_DARK:
 562               default:
 563                 glColor3f (0.5, 0.0, 0.0);
 564               }
 565             }
 566           else {     // Just in case default
 567             glColor3f (0.1, 0.9, 0.1);
 568             }
 569           }
 570     //  fgPrintf( FG_COCKPIT, FG_DEBUG, "HUD Code %d  Status %d\n",
 571     //            hud->code, hud->status );
 572       pHUDInstr->draw();
 573 //      HUD_deque.at(i)->draw(); // Responsible for broken or fixed variants.
 574                               // No broken displays honored just now.
 575       }
 576     }
 577
 578   glEnable(GL_DEPTH_TEST);
 579   glEnable(GL_LIGHTING);
 580   glMatrixMode(GL_PROJECTION);
 581   glPopMatrix();
 582   glMatrixMode(GL_MODELVIEW);
 583   glPopMatrix();
 584 }
 585
 586 /* $Log$
 587 /* Revision 1.13  1998/07/03 13:16:28  curt
 588 /* Added Charlie Hotchkiss's HUD updates and improvementes.
 589 /*
 590  * Revision 1.11  1998/06/05 18:17:10  curt
 591  * Added the declaration of memmove needed by the stl which apparently
 592  * solaris only defines for cc compilations and not for c++ (__STDC__)
 593  *
 594  * Revision 1.10  1998/05/17 16:58:12  curt
 595  * Added a View Frustum Culling ratio display to the hud.
 596  *
 597  * Revision 1.9  1998/05/16 13:04:14  curt
 598  * New updates from Charlie Hotchkiss.
 599  *
 600  * Revision 1.8  1998/05/13 18:27:54  curt
 601  * Added an fov to hud display.
 602  *
 603  * Revision 1.7  1998/05/11 18:13:11  curt
 604  * Complete C++ rewrite of all cockpit code by Charlie Hotchkiss.
 605  *
 606  * Revision 1.22  1998/04/18 04:14:02  curt
 607  * Moved fg_debug.c to it's own library.
 608  *
 609  * Revision 1.21  1998/04/03 21:55:28  curt
 610  * Converting to Gnu autoconf system.
 611  * Tweaks to hud.c
 612  *
 613  * Revision 1.20  1998/03/09 22:48:40  curt
 614  * Minor "formatting" tweaks.
 615  *
 616  * Revision 1.19  1998/02/23 20:18:28  curt
 617  * Incorporated Michele America's hud changes.
 618  *
 619  * Revision 1.18  1998/02/21 14:53:10  curt
 620  * Added Charlie's HUD changes.
 621  *
 622  * Revision 1.17  1998/02/20 00:16:21  curt
 623  * Thursday's tweaks.
 624  *
 625  * Revision 1.16  1998/02/19 13:05:49  curt
 626  * Incorporated some HUD tweaks from Michelle America.
 627  * Tweaked the sky's sunset/rise colors.
 628  * Other misc. tweaks.
 629  *
 630  * Revision 1.15  1998/02/16 13:38:39  curt
 631  * Integrated changes from Charlie Hotchkiss.
 632  *
 633  * Revision 1.14  1998/02/12 21:59:41  curt
 634  * Incorporated code changes contributed by Charlie Hotchkiss
 635  * <chotchkiss@namg.us.anritsu.com>
 636  *
 637  * Revision 1.12  1998/02/09 15:07:48  curt
 638  * Minor tweaks.
 639  *
 640  * Revision 1.11  1998/02/07 15:29:34  curt
 641  * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
 642  * <chotchkiss@namg.us.anritsu.com>
 643  *
 644  * Revision 1.10  1998/02/03 23:20:14  curt
 645  * Lots of little tweaks to fix various consistency problems discovered by
 646  * Solaris' CC.  Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
 647  * passed arguments along to the real printf().  Also incorporated HUD changes
 648  * by Michele America.
 649  *
 650  * Revision 1.9  1998/01/31 00:43:04  curt
 651  * Added MetroWorks patches from Carmen Volpe.
 652  *
 653  * Revision 1.8  1998/01/27 00:47:51  curt
 654  * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
 655  * system and commandline/config file processing code.
 656  *
 657  * Revision 1.7  1998/01/19 18:40:20  curt
 658  * Tons of little changes to clean up the code and to remove fatal errors
 659  * when building with the c++ compiler.
 660  *
 661  * Revision 1.6  1997/12/15 23:54:34  curt
 662  * Add xgl wrappers for debugging.
 663  * Generate terrain normals on the fly.
 664  *
 665  * Revision 1.5  1997/12/10 22:37:39  curt
 666  * Prepended "fg" on the name of all global structures that didn't have it yet.
 667  * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
 668  *
 669  * Revision 1.4  1997/09/23 00:29:32  curt
 670  * Tweaks to get things to compile with gcc-win32.
 671  *
 672  * Revision 1.3  1997/09/05 14:17:26  curt
 673  * More tweaking with stars.
 674  *
 675  * Revision 1.2  1997/09/04 02:17:30  curt
 676  * Shufflin' stuff.
 677  *
 678  * Revision 1.1  1997/08/29 18:03:22  curt
 679  * Initial revision.
 680  *
 681  */