src/debugconsole/console.cpp

   1 /*
   2  * Copyright (C) Volition, Inc. 1999.  All rights reserved.
   3  *
   4  * All source code herein is the property of Volition, Inc. You may not sell
   5  * or otherwise commercially exploit the source or things you created based on
   6  * the source.
   7  */
   8
   9 /*
  10  * $Logfile: /Freespace2/code/DebugConsole/Console.cpp $
  11  * $Revision$
  12  * $Date$
  13  * $Author$
  14  *
  15  * Routines for managing the debug console window.
  16  *
  17  * $Log$
  18  * Revision 1.4  2004/07/04 11:31:43  taylor
  19  * amd64 support, compiler warning fixes, don't use software rendering
  20  *
  21  * Revision 1.3  2002/06/09 04:41:16  relnev
  22  * added copyright header
  23  *
  24  * Revision 1.2  2002/05/07 03:16:43  theoddone33
  25  * The Great Newline Fix
  26  *
  27  * Revision 1.1.1.1  2002/05/03 03:28:08  root
  28  * Initial import.
  29  *
  30  *
  31  * 4     6/04/99 10:35a Dave
  32  *
  33  * 3     10/13/98 9:28a Dave
  34  * Started neatening up freespace.h. Many variables renamed and
  35  * reorganized. Added AlphaColors.[h,cpp]
  36  *
  37  * 2     10/07/98 10:52a Dave
  38  * Initial checkin.
  39  *
  40  * 1     10/07/98 10:48a Dave
  41  *
  42  * 17    2/05/98 11:43a Allender
  43  * enhcanced network statistic collection.  Made callback in debug console
  44  * to do networking if player is in the console
  45  *
  46  * 16    1/22/98 6:42p John
  47  * Move game_flush out of debug console into freespace.     Made object
  48  * pair code throw out some weapons that turn.   Added stats for how many
  49  * object pair are actually checked.
  50  *
  51  * 15    1/16/98 11:56a Allender
  52  * ability to scroll back in debug console, and call game_flush() when
  53  * leaving
  54  *
  55  * 14    1/10/98 1:14p John
  56  * Added explanation to debug console commands
  57  *
  58  * 13    12/21/97 4:39p John
  59  * fixed bug in name compare
  60  *
  61  * 12    12/21/97 4:33p John
  62  * Made debug console functions a class that registers itself
  63  * automatically, so you don't need to add the function to
  64  * debugfunctions.cpp.
  65  *
  66  * 11    9/13/97 9:31a Lawrance
  67  * if playing a demo, clear key filter then reset it once done with debug
  68  * console
  69  *
  70  * 10    9/09/97 3:39p Sandeep
  71  * warning level 4 bugs
  72  *
  73  * 9     6/13/97 3:50p John
  74  * sped up debug console printf
  75  *
  76  * 8     6/13/97 3:27p John
  77  * made debug console pretty
  78  *
  79  * 7     6/09/97 9:24a John
  80  * Changed the way fonts are set.
  81  *
  82  * 6     5/29/97 3:09p John
  83  * Took out debug menu.
  84  * Made software scaler draw larger bitmaps.
  85  * Optimized Direct3D some.
  86  *
  87  * 5     5/13/97 4:07p John
  88  * made numbers also be marked as strings.
  89  *
  90  * 4     4/28/97 5:24p John
  91  * made so : and \ don't get parsed out in debug console.
  92  *
  93  * 3     4/24/97 11:49a John
  94  * added new lighting commands to console.
  95  *
  96  * 2     4/24/97 10:36a John
  97  * moved the debug console stuff into it's own lib... made it compile with
  98  * Fred.
  99  *
 100  * 1     4/24/97 10:16a John
 101  * Initial rev
 102  *
 103  * $NoKeywords: $
 104  */
 105
 106 #include <stdlib.h>
 107 #include <stdio.h>
 108 #include <stdarg.h>
 109 #include <setjmp.h>
 110 #include <string.h>
 111
 112 #include "pstypes.h"
 113 #include "freespace.h"
 114 #include "font.h"
 115 #include "timer.h"
 116 #include "2d.h"
 117 #include "key.h"
 118 #include "alphacolors.h"
 119 #include "osapi.h"
 120
 121 #define MAX_COMMANDS 300
 122
 123 static int Num_debug_commands = 0;
 124 static debug_command *Debug_command[MAX_COMMANDS];
 125
 126
 127 debug_command::debug_command(const char *_name, const char *_help, void (*_func)() )
 128 {
 129         int i;
 130
 131         if ( Num_debug_commands >= MAX_COMMANDS )       {
 132                 Int3();                 // Too many debug console commands!! Increase MAX_COMMANDS!!
 133                 return;
 134         }
 135
 136         for (i=0; i<Num_debug_commands; i++ )   {
 137                 int ret  = stricmp( Debug_command[i]->name, _name );
 138
 139                 if ( ret == 0)  {
 140                         Int3();         // This debug console command already exists!!!!
 141                         return;
 142                 } else if ( ret > 0 )   {
 143                         break;          // Insert it here
 144
 145                 } else if ( ret < 0 )   {
 146                         // do nothing
 147                 }
 148         }
 149
 150         if ( i < Num_debug_commands )   {
 151                 // Insert it at element i
 152                 int j;
 153                 for (j=Num_debug_commands; j>i; j-- )   {
 154                         Debug_command[j] = Debug_command[j-1];
 155                 }
 156                 Debug_command[i] = this;
 157                 Num_debug_commands++;
 158         } else {
 159                 Debug_command[Num_debug_commands] = this;
 160                 Num_debug_commands++;
 161         }
 162
 163         name = _name;
 164         help = _help;
 165         func = _func;
 166 }
 167
 168 // some global variables
 169 int Dc_command; // If this is set, then process the command
 170 int Dc_help;            // If this is set, then print out the help text in the form, "usage: ... \nLong description\n" );
 171 int Dc_status;          // If this is set, then print out the current status of the command.
 172 char *Dc_arg;           // The (lowercased) string value of the argument retrieved from dc_arg
 173 char *Dc_arg_org;       // Dc_arg before it got converted to lowercase
 174 uint Dc_arg_type;       // The type of dc_arg.
 175 const char *Dc_command_line;            // The rest of the command line, from the end of the last processed arg on.
 176 int Dc_arg_int;         // If Dc_arg_type & ARG_INT is set, then this is the value
 177 float Dc_arg_float;     // If Dc_arg_type & ARG_FLOAT is set, then this is the value
 178
 179 int scroll_times = 0;           // incremented each time display scrolls
 180
 181 int debug_inited = 0;
 182
 183 #define DROWS 25
 184 #define DCOLS 80
 185
 186 int debug_x=0, debug_y=0;
 187 char debug_text[DROWS][DCOLS];
 188
 189
 190 static char command_line[1024];
 191 static int command_line_pos = 0;
 192 #define DEBUG_HISTORY 16
 193 static char oldcommand_line[DEBUG_HISTORY][1024];
 194 int last_oldcommand=-1;
 195 int command_scroll = 0;
 196
 197 ///=========================== SCANNER =======================
 198 typedef enum {
 199         LETTER, QUOTE, SPECIAL, EOF_CODE, DIGIT,
 200 } CHAR_CODE;
 201
 202 typedef enum {
 203         NO_TOKEN, IDENTIFIER, NUMBER, STRING,
 204 } TOKEN_CODE;
 205
 206
 207 #define MAX_TOKEN_STRING_LENGTH 128
 208
 209 char                    scanner_ch;
 210 TOKEN_CODE      scanner_token;
 211
 212 char scanner_token_string[MAX_TOKEN_STRING_LENGTH];
 213 char scanner_word_string[MAX_TOKEN_STRING_LENGTH];
 214 const char * scanner_bufferp = "";
 215 char * scanner_tokenp = scanner_token_string;
 216
 217 CHAR_CODE scanner_char_table[256];
 218
 219 #define scanner_char_code(x) scanner_char_table[x]
 220
 221 void scanner_get_char()
 222 {
 223         if ( *scanner_bufferp == '\0' ) {
 224                 scanner_ch = 0;
 225                 return;
 226         }
 227         scanner_ch = *scanner_bufferp++;
 228 }
 229
 230 void scanner_init()
 231 {
 232         int ch;
 233         for (ch=0; ch<256; ++ch) scanner_char_table[ch] = SPECIAL;
 234         for (ch='0'; ch<='9'; ++ch) scanner_char_table[ch] = DIGIT;
 235         for (ch='A'; ch<='Z'; ++ch) scanner_char_table[ch] = LETTER;
 236         for (ch='a'; ch<='z'; ++ch) scanner_char_table[ch] = LETTER;
 237
 238         scanner_char_table[(int)'.'] = DIGIT;
 239         scanner_char_table[(int)'-'] = DIGIT;
 240         scanner_char_table[(int)'+'] = DIGIT;
 241
 242         scanner_char_table[(int)'_'] = LETTER;
 243         scanner_char_table[34] = QUOTE;
 244         scanner_char_table[0] = EOF_CODE;
 245
 246
 247         scanner_char_table[(int)':'] = LETTER;
 248         scanner_char_table[(int)'\\'] = LETTER;
 249
 250         scanner_ch = 0;
 251 }
 252
 253
 254 void scanner_skip_blanks()
 255 {
 256         while( (scanner_ch ==' ') || (scanner_ch =='\t') )
 257                 scanner_get_char();
 258 }
 259
 260
 261 void scanner_downshift_word()
 262 {
 263         int offset = 'a' - 'A';
 264         char * tp;
 265
 266         strcpy( scanner_word_string, scanner_token_string );
 267
 268         tp = scanner_word_string;
 269         do {
 270                 *tp = (char)((*tp>='A') && (*tp <='Z') ? *tp + offset : *tp) ;
 271                 tp++;
 272         } while (*tp != '\0' );
 273 }
 274
 275
 276 void scanner_get_word()
 277 {
 278         while( (scanner_char_code((int)scanner_ch)==LETTER) || (scanner_char_code((int)scanner_ch)==DIGIT)  )   {
 279                 *scanner_tokenp++ = scanner_ch;
 280                 scanner_get_char();
 281         }
 282         *scanner_tokenp = '\0';
 283
 284         scanner_token = IDENTIFIER;
 285 }
 286
 287
 288 void scanner_get_string()
 289 {
 290         *scanner_tokenp++ = 34;
 291         scanner_get_char();
 292
 293         while(scanner_ch != 34 )        {
 294                 *scanner_tokenp++ = scanner_ch;
 295                 scanner_get_char();
 296         }
 297         scanner_get_char();
 298         *scanner_tokenp++ = 34;
 299         *scanner_tokenp = '\0';
 300         scanner_token = STRING;
 301 }
 302
 303
 304
 305 void scanner_get_token()
 306 {
 307         scanner_skip_blanks();
 308         scanner_tokenp = scanner_token_string;
 309         *scanner_tokenp = 0;
 310
 311
 312         switch( scanner_char_code((int)scanner_ch) )    {
 313         case QUOTE:             scanner_get_string();   break;
 314         case EOF_CODE:  scanner_token = NO_TOKEN;       break;
 315         case DIGIT:
 316         case LETTER:    scanner_get_word(); break;
 317         default:
 318                 *scanner_tokenp++ = scanner_ch;
 319                 *scanner_tokenp = '\0';
 320                 scanner_get_char();
 321                 scanner_token = IDENTIFIER;
 322                 break;
 323         }
 324
 325         scanner_downshift_word();
 326 }
 327
 328 void scanner_start_command( const char * s )
 329 {
 330         scanner_bufferp = s;
 331         scanner_get_char();
 332 }
 333
 334
 335 int Dc_debug_on = 0;
 336 jmp_buf dc_bad_arg;
 337
 338 void dc_get_arg(uint type)
 339 {
 340         scanner_get_token();
 341
 342         Dc_command_line = scanner_bufferp;
 343         Dc_arg_org = scanner_token_string;
 344         Dc_arg = scanner_word_string;
 345
 346         if (Dc_debug_on)        {
 347                 dc_printf( "next arg is '%s', was originally '%s'\n", Dc_arg, Dc_arg_org );
 348                 dc_printf( "Rest of the command line is '%s'\n", Dc_command_line );
 349         }
 350
 351         if ( scanner_token == NO_TOKEN )        {
 352                 Dc_arg_type = ARG_NONE;
 353         } else if ( scanner_token == IDENTIFIER )       {
 354                 Dc_arg_type = ARG_STRING;
 355         } else if ( scanner_token == STRING )   {
 356                 Dc_arg_type = ARG_QUOTE;
 357         } else {
 358                 Dc_arg_type = ARG_STRING;
 359         }
 360
 361         if ( Dc_arg_type & ARG_STRING ) {
 362                 int i, num_digits, len;
 363
 364                 len = strlen(Dc_arg);
 365                 num_digits = 0;
 366
 367                 for (i=0; i<len; i++)
 368                         if ( scanner_char_table[(int)Dc_arg[i]] == DIGIT ) num_digits++;
 369
 370                 if ( num_digits==len )  {
 371                         Dc_arg_type |= ARG_FLOAT;
 372                         Dc_arg_float = (float)atof(Dc_arg);
 373                         if ( !strchr( Dc_arg, '.' ))    {
 374                                 Dc_arg_type |= ARG_INT;
 375                                 Dc_arg_int = atoi(Dc_arg);
 376                         }
 377                 } else {
 378                         if ( (Dc_arg[0] == '0') && (Dc_arg[1] == 'x') ) {
 379                                 char *p;
 380                                 int n;
 381                                 n = strtol(Dc_arg,&p,0);
 382                                 if ( *p == 0 )  {
 383                                         Dc_arg_type |= ARG_INT|ARG_HEX;
 384                                         Dc_arg_int = n;
 385                                 }
 386                         }
 387                 }
 388
 389                 if (Dc_debug_on)        {
 390                         if ( Dc_arg_type & ARG_FLOAT )
 391                                 dc_printf( "Found float number! %f\n", Dc_arg_float );
 392
 393                         if ( Dc_arg_type & ARG_INT )
 394                                 dc_printf( "Found int number! %d\n", Dc_arg_int );
 395
 396                         if ( Dc_arg_type & ARG_HEX )
 397                                 dc_printf( "Found hex number! 0x%x\n", Dc_arg_int );
 398                 }
 399
 400                 if ( !stricmp( Dc_arg, "on" ))
 401                         Dc_arg_type |= ARG_TRUE;
 402                 if ( !stricmp( Dc_arg, "true" ))
 403                         Dc_arg_type |= ARG_TRUE;
 404                 if ( !stricmp( Dc_arg, "off" ))
 405                         Dc_arg_type |= ARG_FALSE;
 406                 if ( !stricmp( Dc_arg, "false" ))
 407                         Dc_arg_type |= ARG_FALSE;
 408
 409                 if ( !stricmp( Dc_arg, "+" ))
 410                         Dc_arg_type |= ARG_PLUS;
 411
 412                 if ( !stricmp( Dc_arg, "-" ))
 413                         Dc_arg_type |= ARG_MINUS;
 414
 415                 if ( !stricmp( Dc_arg, "," ))
 416                         Dc_arg_type |= ARG_COMMA;
 417         }
 418
 419         if ( Dc_arg_type & ARG_INT)     {
 420                 if ( Dc_arg_int )
 421                         Dc_arg_type |= ARG_TRUE;
 422                 else
 423                         Dc_arg_type |= ARG_FALSE;
 424         }
 425
 426         if ( !(Dc_arg_type&type) )      {
 427                 if ( (Dc_arg_type & ARG_NONE) && !(type & ARG_NONE))
 428                         dc_printf( "Error: Not enough parameters.\n" );
 429                 else
 430                         dc_printf( "Error: '%s' invalid type\n", Dc_arg );
 431                 longjmp(dc_bad_arg,1);
 432         }
 433
 434 }
 435
 436 void debug_help();
 437
 438 void debug_do_command(const char * command)
 439 {
 440
 441         int i;
 442         int mode = 0;
 443
 444         if ( strlen(command) < 1 ) return;
 445
 446         Dc_debug_on = 0;
 447         Dc_command_line = command;
 448         scanner_start_command(command);
 449
 450         if (setjmp(dc_bad_arg) )        {
 451                 return;
 452         }
 453
 454         dc_get_arg( ARG_ANY );
 455
 456         if ( !strcmp( Dc_arg, "debug" ) )       {
 457                 Dc_debug_on = 1;
 458                 dc_printf( "Command line: '%s'\n", Dc_command_line );
 459                 dc_get_arg( ARG_ANY );
 460         }
 461
 462         if ( !strcmp( Dc_arg, "?" ) )   {
 463                 mode = 1;
 464                 dc_get_arg( ARG_ANY );
 465
 466                 if ( Dc_arg_type&ARG_NONE )     {
 467                         debug_help();
 468                         return;
 469                 }
 470         }
 471
 472         if ( !strcmp( Dc_arg, "help" ) || !strcmp( Dc_arg, "man" ) )    {
 473                 mode = 2;
 474                 dc_get_arg( ARG_ANY );
 475                 if ( Dc_arg_type&ARG_NONE )     {
 476                         debug_help();
 477                         return;
 478                 }
 479         }
 480
 481         if ( strstr( Dc_command_line, "?" ) )   {
 482                 mode = 2;
 483         }
 484
 485         if ( !(Dc_arg_type&ARG_STRING) )        {
 486                 dc_printf( "Invalid keyword '%s'\n", Dc_arg );
 487                 return;
 488         }
 489
 490
 491         if (Dc_debug_on)        {
 492                 dc_printf( "Searching for command '%s'\n", Dc_arg );
 493         }
 494
 495         for (i=0; i<Num_debug_commands; i++ )   {
 496                 if ( !stricmp( Debug_command[i]->name, Dc_arg ))        {
 497
 498                         if (mode==0)    {
 499                                 if (Dc_debug_on)
 500                                         dc_printf( "Calling function '%s'\n", Dc_arg );
 501                                 Dc_command = 1;
 502                                 Dc_help = 0;
 503                                 Dc_status = 1;
 504                         } else if (mode==1) {
 505                                 if (Dc_debug_on)
 506                                         dc_printf( "Checking status for '%s'\n", Dc_arg );
 507                                 Dc_command = 0;
 508                                 Dc_help = 0;
 509                                 Dc_status = 1;
 510                         } else {
 511                                 if (Dc_debug_on)
 512                                         dc_printf( "Doing help for '%s'\n", Dc_arg );
 513                                 Dc_command = 0;
 514                                 Dc_help = 1;
 515                                 Dc_status = 0;
 516                         }
 517
 518                         (*Debug_command[i]->func)();
 519
 520                         if (mode==0)    {
 521                                 dc_get_arg(ARG_ANY);
 522                                 if (!(Dc_arg_type&ARG_NONE))    {
 523                                         dc_printf( "Ignoring the unused command line tail '%s %s'\n", Dc_arg_org, Dc_command_line );
 524                                 }
 525                         }
 526
 527                         return;
 528                 }
 529         }
 530
 531         dc_printf( "Unknown command '%s'\n", Dc_arg );
 532 }
 533
 534 void debug_draw()
 535 {
 536         int i;
 537
 538         gr_clear();
 539         gr_set_font(FONT1);
 540         gr_set_color_fast( &Color_bright );
 541         gr_string( 0x8000, 3, "Debug Console" );
 542
 543         gr_set_color_fast( &Color_normal );
 544
 545         for (i=0; i<DROWS; i++ )        {
 546                 gr_string( 0, i*16+16, debug_text[i] );
 547         }
 548
 549         int t = timer_get_fixed_seconds() / (F1_0/3);
 550         if ( t & 1 )    {
 551                 int w,h;
 552                 char c;
 553
 554                 c = debug_text[debug_y][command_line_pos+1];
 555                 debug_text[debug_y][command_line_pos+1] = 0;
 556
 557                 gr_get_string_size( &w, &h, debug_text[debug_y] );
 558
 559                 //gr_string( w, debug_y*16, "_" );
 560                 gr_rect(w+1,debug_y*16+1+16,2,14);
 561
 562                 debug_text[debug_y][command_line_pos+1] = c;
 563         }
 564
 565         gr_flip();
 566 }
 567
 568
 569 void debug_output( char c )
 570 {
 571         if ( c == '\t' )        {
 572                 int next_tab = ((debug_x/28)+1)*28;
 573
 574                 if ( next_tab >= DCOLS-1 )      {
 575                         debug_x=0;
 576                         debug_y++;
 577                         scroll_times++;
 578                         if ( debug_y >= DROWS ) {
 579                                 int i;
 580                                 for (i=1; i<DROWS; i++ )
 581                                         strcpy( debug_text[i-1], debug_text[i] );
 582                                 debug_y = DROWS-1;
 583                                 debug_x = 0;
 584                                 debug_text[debug_y][debug_x] = 0;
 585                         }
 586                         debug_text[debug_y][debug_x] = 0;
 587                         return;
 588                 }
 589
 590                 for ( ; debug_x < next_tab; )
 591                         debug_text[debug_y][debug_x++] = ' ';
 592                 debug_text[debug_y][debug_x] = 0;
 593                 return;
 594         }
 595
 596         if ( (c == '\n') || (debug_x >= DCOLS-1) )      {
 597                 debug_x=0;
 598                 debug_y++;
 599                 scroll_times++;
 600                 if ( debug_y >= DROWS ) {
 601                         int i;
 602                         for (i=1; i<DROWS; i++ )
 603                                 strcpy( debug_text[i-1], debug_text[i] );
 604                         debug_y = DROWS-1;
 605                         debug_x = 0;
 606                         debug_text[debug_y][debug_x] = 0;
 607                 }
 608                 debug_text[debug_y][debug_x] = 0;
 609                 if ( c == '\n' ) return;
 610         }
 611
 612         debug_text[debug_y][debug_x++] = c;
 613         debug_text[debug_y][debug_x] = 0;
 614 }
 615
 616 void dc_printf(const char *format, ...)
 617 {
 618         char tmp[DCOLS*2];
 619         va_list args;
 620
 621         va_start(args, format);
 622         vsprintf(tmp, format, args);
 623         va_end(args);
 624
 625         char *p = tmp;
 626         while( *p )     {
 627                 debug_output(*p);
 628                 p++;
 629         }
 630 }
 631
 632
 633
 634 void debug_init()
 635 {
 636         int i;
 637         if ( debug_inited ) return;
 638
 639         debug_inited = 1;
 640
 641         debug_x=0;
 642         debug_y=0;
 643
 644         for (i=0; i<DROWS; i++ )        {
 645                 debug_text[i][0] = 0;
 646         }
 647
 648         dc_printf("Debug console started.\n" );
 649 }
 650
 651
 652 void debug_console( void (*_func)() )
 653 {
 654         int done = 0;
 655
 656         scanner_init();
 657
 658         while( key_inkey() ){
 659                 os_poll();
 660         }
 661
 662         if ( !debug_inited ) debug_init();
 663
 664
 665         debug_draw();
 666
 667         while (!done)   {
 668                 // poll the os
 669                 os_poll();
 670
 671                 int k = key_inkey();
 672                 switch( k )     {
 673
 674                 case KEY_SHIFTED+SDLK_RETURN:
 675                 case SDLK_ESCAPE:
 676                         done=1; break;
 677
 678                 case SDLK_BACKSPACE:
 679                         if ( command_line_pos > 0 )     {
 680                                 command_line[--command_line_pos] = 0;
 681                         }
 682                         break;
 683
 684                 case SDLK_F3:
 685                         if ( last_oldcommand > -1 )     {
 686                                 strcpy( command_line, oldcommand_line[last_oldcommand] );
 687                                 command_line_pos = strlen(command_line);
 688                                 command_line[command_line_pos] = 0;
 689                         }
 690                         break;
 691
 692                 case SDLK_UP:
 693                         command_scroll--;
 694                         if (command_scroll<0)
 695                                 command_scroll = last_oldcommand;
 696
 697                         if ( command_scroll > -1 )      {
 698                                 strcpy( command_line, oldcommand_line[command_scroll] );
 699                                 command_line_pos = strlen(command_line);
 700                                 command_line[command_line_pos] = 0;
 701                         }
 702                         break;
 703
 704                 case SDLK_DOWN:
 705                         command_scroll++;
 706                         if (command_scroll>last_oldcommand)
 707                                 command_scroll = 0;
 708                         if (command_scroll>last_oldcommand)
 709                                 command_scroll = -1;
 710                         if ( command_scroll > -1 )      {
 711                                 strcpy( command_line, oldcommand_line[command_scroll] );
 712                                 command_line_pos = strlen(command_line);
 713                                 command_line[command_line_pos] = 0;
 714                         }
 715                         break;
 716
 717                 case SDLK_RETURN:       {
 718                         debug_output( '\n' );
 719                         debug_draw();
 720
 721                         debug_do_command(command_line);
 722
 723                         int i, found = 0;
 724                         for (i=0; i<=last_oldcommand; i++ )     {
 725                                 if (!stricmp( oldcommand_line[i], command_line ))       {
 726                                         found = 1;
 727                                 }
 728                         }
 729                         if ( !found )   {
 730                                 if ( last_oldcommand < DEBUG_HISTORY-1 )        {
 731                                         last_oldcommand++;
 732                                         strcpy( oldcommand_line[last_oldcommand], command_line);
 733                                 } else {
 734                                         int i;
 735                                         for (i=0; i<last_oldcommand; i++ )      {
 736                                                 strcpy( oldcommand_line[i], oldcommand_line[i+1] );
 737                                         }
 738                                         strcpy( oldcommand_line[last_oldcommand], command_line);
 739                                 }
 740                         }
 741 //                      int i;
 742 //                      for (i=0; i<=last_oldcommand; i++ )     {
 743 //                              dc_printf( "OC %d. %s\n", i, oldcommand_line[i] );
 744 //                      }
 745
 746                         debug_output( '\n' );
 747                         command_line_pos = 0;
 748                         command_line[command_line_pos] = 0;
 749
 750                         command_scroll = 0;
 751
 752                         }
 753                         break;
 754                 default:        {
 755                                 int c = key_get_text_input();
 756                                 if ( (c >= 0) && (c < 255) ) {
 757                                         command_line[command_line_pos++] = (ubyte)c;
 758                                         command_line[command_line_pos] = 0;
 759                                 }
 760                         }
 761                         break;
 762
 763                 }
 764
 765                 strcpy( debug_text[debug_y], ">" );
 766                 strcat( debug_text[debug_y], command_line );
 767                 debug_draw();
 768
 769                 if ( _func ){
 770                         _func();
 771                 }
 772         }
 773
 774         while( key_inkey() ){
 775                 os_poll();
 776         }
 777 }
 778
 779 void debug_help()
 780 {
 781         int s, i;
 782
 783         dc_printf( "Available functions:\n\n" );
 784
 785         s = scroll_times;
 786         for (i=0; i<Num_debug_commands; i++ )   {
 787                 dc_printf( " %s - %s\n", Debug_command[i]->name, Debug_command[i]->help );
 788                 //mprintf(( "Scroll times %d\n", scroll_times - s ));
 789                 if ( scroll_times - s > DROWS - 3 )     {
 790                         int k;
 791                         dc_printf( "       Press a key...B for back\n" );
 792                         debug_draw();
 793                         k = key_getch();
 794                         s = scroll_times;
 795                         if ( k == SDLK_b )  {
 796                                 i -= ((DROWS-3)*2);
 797                                 if ( i <= 0 )
 798                                         i = -1;
 799                         }
 800                 }
 801                 debug_draw();
 802         }
 803         dc_printf( "\n" );
 804
 805         dc_printf( "Typing '? function_name' will give the current status.\n" );
 806         dc_printf( "Typing 'function_name ?' will give help on the function.\n" );
 807         dc_printf( "Typing ? or help will give you help.\n");
 808         dc_printf( "F3 selects last command line.\n" );
 809 }
 810