src/game/g_saveload.pas

   1 (* Copyright (C)  DooM 2D:Forever Developers
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *)
  16 {$INCLUDE ../shared/a_modes.inc}
  17 unit g_saveload;
  18
  19 interface
  20
  21 uses
  22   SysUtils, Classes,
  23   e_graphics, g_phys, g_textures;
  24
  25
  26 function g_GetSaveName (n: Integer; out valid: Boolean): AnsiString;
  27
  28 function g_SaveGameTo (const filename: AnsiString; const aname: AnsiString; deleteOnError: Boolean=true): Boolean;
  29 function g_LoadGameFrom (const filename: AnsiString): Boolean;
  30
  31 function g_SaveGame (n: Integer; const aname: AnsiString): Boolean;
  32 function g_LoadGame (n: Integer): Boolean;
  33
  34 procedure Obj_SaveState (st: TStream; o: PObj);
  35 procedure Obj_LoadState (o: PObj; st: TStream);
  36
  37
  38 implementation
  39
  40 uses
  41   MAPDEF, utils, xstreams,
  42   g_game, g_items, g_map, g_monsters, g_triggers,
  43   g_basic, g_main, Math, wadreader,
  44   g_weapons, g_player, g_console,
  45   e_log, g_language;
  46
  47 const
  48   SAVE_SIGNATURE = $56534644; // 'DFSV'
  49   SAVE_VERSION = $07;
  50   END_MARKER_STRING = 'END';
  51   PLAYER_VIEW_SIGNATURE = $57564C50; // 'PLVW'
  52   OBJ_SIGNATURE = $4A424F5F; // '_OBJ'
  53
  54
  55 procedure Obj_SaveState (st: TStream; o: PObj);
  56 begin
  57   if (st = nil) then exit;
  58   // Ñèãíàòóðà îáúåêòà
  59   utils.writeSign(st, '_OBJ');
  60   utils.writeInt(st, Byte(0)); // version
  61   // Ïîëîæåíèå ïî-ãîðèçîíòàëè
  62   utils.writeInt(st, LongInt(o^.X));
  63   // Ïîëîæåíèå ïî-âåðòèêàëè
  64   utils.writeInt(st, LongInt(o^.Y));
  65   // Îãðàíè÷èâàþùèé ïðÿìîóãîëüíèê
  66   utils.writeInt(st, LongInt(o^.Rect.X));
  67   utils.writeInt(st, LongInt(o^.Rect.Y));
  68   utils.writeInt(st, Word(o^.Rect.Width));
  69   utils.writeInt(st, Word(o^.Rect.Height));
  70   // Ñêîðîñòü
  71   utils.writeInt(st, LongInt(o^.Vel.X));
  72   utils.writeInt(st, LongInt(o^.Vel.Y));
  73   // Óñêîðåíèå
  74   utils.writeInt(st, LongInt(o^.Accel.X));
  75   utils.writeInt(st, LongInt(o^.Accel.Y));
  76 end;
  77
  78
  79 procedure Obj_LoadState (o: PObj; st: TStream);
  80 begin
  81   if (st = nil) then exit;
  82   // Ñèãíàòóðà îáúåêòà:
  83   if not utils.checkSign(st, '_OBJ') then raise XStreamError.Create('invalid object signature');
  84   if (utils.readByte(st) <> 0) then raise XStreamError.Create('invalid object version');
  85   // Ïîëîæåíèå ïî-ãîðèçîíòàëè
  86   o^.X := utils.readLongInt(st);
  87   // Ïîëîæåíèå ïî-âåðòèêàëè
  88   o^.Y := utils.readLongInt(st);
  89   // Îãðàíè÷èâàþùèé ïðÿìîóãîëüíèê
  90   o^.Rect.X := utils.readLongInt(st);
  91   o^.Rect.Y := utils.readLongInt(st);
  92   o^.Rect.Width := utils.readWord(st);
  93   o^.Rect.Height := utils.readWord(st);
  94   // Ñêîðîñòü
  95   o^.Vel.X := utils.readLongInt(st);
  96   o^.Vel.Y := utils.readLongInt(st);
  97   // Óñêîðåíèå
  98   o^.Accel.X := utils.readLongInt(st);
  99   o^.Accel.Y := utils.readLongInt(st);
 100 end;
 101
 102
 103 function buildSaveName (n: Integer): AnsiString;
 104 begin
 105   result := '';
 106   if (n < 0) or (n > 65535) then exit;
 107   result := formatstrf('%sSAVGAME%s.DAT', [DataDir, n]);
 108 end;
 109
 110
 111 function g_GetSaveName (n: Integer; out valid: Boolean): AnsiString;
 112 var
 113   st: TStream = nil;
 114   ver: Byte;
 115   stlen: Word;
 116 begin
 117   valid := false;
 118   result := '';
 119   if (n < 0) or (n > 65535) then exit;
 120   try
 121     // Îòêðûâàåì ôàéë ñîõðàíåíèé
 122     st := openDiskFileRO(buildSaveName(n));
 123     try
 124       if not utils.checkSign(st, 'DFSV') then raise XStreamError.Create('invalid save game signature');
 125       ver := utils.readByte(st);
 126       if (ver < 7) then
 127       begin
 128         utils.readLongWord(st); // section size
 129         stlen := utils.readWord(st);
 130         if (stlen < 1) or (stlen > 64) then raise XStreamError.Create('invalid save game version');
 131         // Èìÿ ñýéâà
 132         SetLength(result, stlen);
 133         st.ReadBuffer(result[1], stlen);
 134       end
 135       else
 136       begin
 137         // 7+
 138         // Èìÿ ñýéâà
 139         result := utils.readStr(st, 64);
 140       end;
 141       valid := (ver = SAVE_VERSION);
 142       //if (utils.readByte(st) <> SAVE_VERSION) then raise XStreamError.Create('invalid save game version');
 143     finally
 144       st.Free();
 145     end;
 146   except
 147     on e: Exception do
 148     begin
 149       e_WriteLog('GetSaveName Error: '+e.message, MSG_WARNING);
 150       {$IF DEFINED(D2F_DEBUG)}e_WriteStackTrace(e.message);{$ENDIF}
 151       result := '';
 152     end;
 153   end;
 154 end;
 155
 156
 157 function g_SaveGameTo (const filename: AnsiString; const aname: AnsiString; deleteOnError: Boolean=true): Boolean;
 158 var
 159   st: TStream = nil;
 160   i, k: Integer;
 161   PID1, PID2: Word;
 162 begin
 163   result := false;
 164   try
 165     st := createDiskFile(filename);
 166     try
 167       utils.writeSign(st, 'DFSV');
 168       utils.writeInt(st, Byte(SAVE_VERSION));
 169       // Èìÿ ñýéâà
 170       utils.writeStr(st, aname, 64);
 171       // Ïîëíûé ïóòü ê âàäó è êàðòà
 172       //if (Length(gCurrentMapFileName) <> 0) then e_LogWritefln('SAVE: current map is ''%s''...', [gCurrentMapFileName]);
 173       utils.writeStr(st, gCurrentMapFileName);
 174       // Ïóòü ê êàðòå
 175       utils.writeStr(st, gGameSettings.WAD);
 176       // Èìÿ êàðòû
 177       utils.writeStr(st, g_ExtractFileName(gMapInfo.Map));
 178       // Êîëè÷åñòâî èãðîêîâ
 179       utils.writeInt(st, Word(g_Player_GetCount));
 180       // Èãðîâîå âðåìÿ
 181       utils.writeInt(st, LongWord(gTime));
 182       // Òèï èãðû
 183       utils.writeInt(st, Byte(gGameSettings.GameType));
 184       // Ðåæèì èãðû
 185       utils.writeInt(st, Byte(gGameSettings.GameMode));
 186       // Ëèìèò âðåìåíè
 187       utils.writeInt(st, Word(gGameSettings.TimeLimit));
 188       // Ëèìèò î÷êîâ
 189       utils.writeInt(st, Word(gGameSettings.GoalLimit));
 190       // Ëèìèò æèçíåé
 191       utils.writeInt(st, Byte(gGameSettings.MaxLives));
 192       // Èãðîâûå îïöèè
 193       utils.writeInt(st, LongWord(gGameSettings.Options));
 194       // Äëÿ êîîïà
 195       utils.writeInt(st, Word(gCoopMonstersKilled));
 196       utils.writeInt(st, Word(gCoopSecretsFound));
 197       utils.writeInt(st, Word(gCoopTotalMonstersKilled));
 198       utils.writeInt(st, Word(gCoopTotalSecretsFound));
 199       utils.writeInt(st, Word(gCoopTotalMonsters));
 200       utils.writeInt(st, Word(gCoopTotalSecrets));
 201
 202       ///// Ñîõðàíÿåì ñîñòîÿíèå îáëàñòåé ïðîñìîòðà /////
 203       utils.writeSign(st, 'PLVW');
 204       utils.writeInt(st, Byte(0)); // version
 205       PID1 := 0;
 206       PID2 := 0;
 207       if (gPlayer1 <> nil) then PID1 := gPlayer1.UID;
 208       if (gPlayer2 <> nil) then PID2 := gPlayer2.UID;
 209       utils.writeInt(st, Word(PID1));
 210       utils.writeInt(st, Word(PID2));
 211       ///// /////
 212
 213       ///// Ñîñòîÿíèå êàðòû /////
 214       g_Map_SaveState(st);
 215       ///// /////
 216
 217       ///// Ñîñòîÿíèå ïðåäìåòîâ /////
 218       g_Items_SaveState(st);
 219       ///// /////
 220
 221       ///// Ñîñòîÿíèå òðèããåðîâ /////
 222       g_Triggers_SaveState(st);
 223       ///// /////
 224
 225       ///// Ñîñòîÿíèå îðóæèÿ /////
 226       g_Weapon_SaveState(st);
 227       ///// /////
 228
 229       ///// Ñîñòîÿíèå ìîíñòðîâ /////
 230       g_Monsters_SaveState(st);
 231       ///// /////
 232
 233       ///// Ñîñòîÿíèå òðóïîâ /////
 234       g_Player_Corpses_SaveState(st);
 235       ///// /////
 236
 237       ///// Ñîõðàíÿåì èãðîêîâ (â òîì ÷èñëå áîòîâ) /////
 238       if (g_Player_GetCount > 0) then
 239       begin
 240         k := 0;
 241         for i := 0 to High(gPlayers) do
 242         begin
 243           if (gPlayers[i] <> nil) then
 244           begin
 245             // Ñîñòîÿíèå èãðîêà
 246             gPlayers[i].SaveState(st);
 247             Inc(k);
 248           end;
 249         end;
 250
 251         // Âñå ëè èãðîêè íà ìåñòå
 252         if (k <> g_Player_GetCount) then raise XStreamError.Create('g_SaveGame: wrong players count');
 253       end;
 254       ///// /////
 255
 256       ///// Ìàðêåð îêîí÷àíèÿ /////
 257       utils.writeSign(st, 'END');
 258       utils.writeInt(st, Byte(0));
 259       ///// /////
 260       result := true;
 261     finally
 262       st.Free();
 263     end;
 264
 265   except
 266     on e: Exception do
 267       begin
 268         st.Free();
 269         g_Console_Add(_lc[I_GAME_ERROR_SAVE]);
 270         e_WriteLog('SaveState Error: '+e.message, MSG_WARNING);
 271         if deleteOnError then DeleteFile(filename);
 272         {$IF DEFINED(D2F_DEBUG)}e_WriteStackTrace(e.message);{$ENDIF}
 273         result := false;
 274       end;
 275   end;
 276 end;
 277
 278
 279 function g_LoadGameFrom (const filename: AnsiString): Boolean;
 280 var
 281   st: TStream = nil;
 282   WAD_Path, Map_Name: AnsiString;
 283   nPlayers: Integer;
 284   Game_Type, Game_Mode, Game_MaxLives: Byte;
 285   Game_TimeLimit, Game_GoalLimit: Word;
 286   Game_Time, Game_Options: Cardinal;
 287   Game_CoopMonstersKilled,
 288   Game_CoopSecretsFound,
 289   Game_CoopTotalMonstersKilled,
 290   Game_CoopTotalSecretsFound,
 291   Game_CoopTotalMonsters,
 292   Game_CoopTotalSecrets,
 293   PID1, PID2: Word;
 294   i: Integer;
 295   gameCleared: Boolean = false;
 296   curmapfile: AnsiString = '';
 297   errpos: LongWord = 0;
 298 begin
 299   result := false;
 300
 301   try
 302     st := openDiskFileRO(filename);
 303     try
 304       if not utils.checkSign(st, 'DFSV') then raise XStreamError.Create('invalid save game signature');
 305       if (utils.readByte(st) <> SAVE_VERSION) then raise XStreamError.Create('invalid save game version');
 306
 307       e_WriteLog('Loading saved game...', MSG_NOTIFY);
 308
 309       try
 310         //g_Game_Free(false); // don't free textures for the same map
 311         g_Game_ClearLoading();
 312         g_Game_SetLoadingText(_lc[I_LOAD_SAVE_FILE], 0, False);
 313         gLoadGameMode := True;
 314
 315         ///// Çàãðóæàåì ñîñòîÿíèå èãðû /////
 316         // Èìÿ ñýéâà
 317         {str :=} utils.readStr(st, 64);
 318
 319         // Ïîëíûé ïóòü ê âàäó è êàðòà
 320         curmapfile := utils.readStr(st);
 321
 322         if (Length(gCurrentMapFileName) <> 0) then e_LogWritefln('LOAD: previous map was ''%s''...', [gCurrentMapFileName]);
 323         if (Length(curmapfile) <> 0) then e_LogWritefln('LOAD: new map is ''%s''...', [curmapfile]);
 324         // À âîò òóò, íàêîíåö, ÷èñòèì ðåñóðñû
 325         g_Game_Free(curmapfile <> gCurrentMapFileName); // don't free textures for the same map
 326         gameCleared := true;
 327
 328         // Ïóòü ê êàðòå
 329         WAD_Path := utils.readStr(st);
 330         // Èìÿ êàðòû
 331         Map_Name := utils.readStr(st);
 332         // Êîëè÷åñòâî èãðîêîâ
 333         nPlayers := utils.readWord(st);
 334         // Èãðîâîå âðåìÿ
 335         Game_Time := utils.readLongWord(st);
 336         // Òèï èãðû
 337         Game_Type := utils.readByte(st);
 338         // Ðåæèì èãðû
 339         Game_Mode := utils.readByte(st);
 340         // Ëèìèò âðåìåíè
 341         Game_TimeLimit := utils.readWord(st);
 342         // Ëèìèò î÷êîâ
 343         Game_GoalLimit := utils.readWord(st);
 344         // Ëèìèò æèçíåé
 345         Game_MaxLives := utils.readByte(st);
 346         // Èãðîâûå îïöèè
 347         Game_Options := utils.readLongWord(st);
 348         // Äëÿ êîîïà
 349         Game_CoopMonstersKilled := utils.readWord(st);
 350         Game_CoopSecretsFound := utils.readWord(st);
 351         Game_CoopTotalMonstersKilled := utils.readWord(st);
 352         Game_CoopTotalSecretsFound := utils.readWord(st);
 353         Game_CoopTotalMonsters := utils.readWord(st);
 354         Game_CoopTotalSecrets := utils.readWord(st);
 355         ///// /////
 356
 357         ///// Çàãðóæàåì ñîñòîÿíèå îáëàñòåé ïðîñìîòðà /////
 358         if not utils.checkSign(st, 'PLVW') then raise XStreamError.Create('invalid viewport signature');
 359         if (utils.readByte(st) <> 0) then raise XStreamError.Create('invalid viewport version');
 360         PID1 := utils.readWord(st);
 361         PID2 := utils.readWord(st);
 362         ///// /////
 363
 364         // Çàãðóæàåì êàðòó:
 365         ZeroMemory(@gGameSettings, sizeof(TGameSettings));
 366         gAimLine := false;
 367         gShowMap := false;
 368         if (Game_Type = GT_NONE) or (Game_Type = GT_SINGLE) then
 369         begin
 370           // Íàñòðîéêè èãðû
 371           gGameSettings.GameType := GT_SINGLE;
 372           gGameSettings.MaxLives := 0;
 373           gGameSettings.Options := gGameSettings.Options+GAME_OPTION_ALLOWEXIT;
 374           gGameSettings.Options := gGameSettings.Options+GAME_OPTION_MONSTERS;
 375           gGameSettings.Options := gGameSettings.Options+GAME_OPTION_BOTVSMONSTER;
 376           gSwitchGameMode := GM_SINGLE;
 377         end
 378         else
 379         begin
 380           // Íàñòðîéêè èãðû
 381           gGameSettings.GameType := GT_CUSTOM;
 382           gGameSettings.GameMode := Game_Mode;
 383           gSwitchGameMode := Game_Mode;
 384           gGameSettings.TimeLimit := Game_TimeLimit;
 385           gGameSettings.GoalLimit := Game_GoalLimit;
 386           gGameSettings.MaxLives := IfThen(Game_Mode = GM_CTF, 0, Game_MaxLives);
 387           gGameSettings.Options := Game_Options;
 388         end;
 389         g_Game_ExecuteEvent('ongamestart');
 390
 391         // Óñòàíîâêà ðàçìåðîâ îêîí èãðîêîâ
 392         g_Game_SetupScreenSize();
 393
 394         // Çàãðóçêà è çàïóñê êàðòû
 395         if not g_Game_StartMap(WAD_Path+':\'+Map_Name, True, curmapfile) then
 396         begin
 397           g_FatalError(Format(_lc[I_GAME_ERROR_MAP_LOAD], [WAD_Path + ':\' + Map_Name]));
 398           exit;
 399         end;
 400
 401         // Íàñòðîéêè èãðîêîâ è áîòîâ
 402         g_Player_Init();
 403
 404         // Óñòàíàâëèâàåì âðåìÿ
 405         gTime := Game_Time;
 406         // Âîçâðàùàåì ñòàòû
 407         gCoopMonstersKilled := Game_CoopMonstersKilled;
 408         gCoopSecretsFound := Game_CoopSecretsFound;
 409         gCoopTotalMonstersKilled := Game_CoopTotalMonstersKilled;
 410         gCoopTotalSecretsFound := Game_CoopTotalSecretsFound;
 411         gCoopTotalMonsters := Game_CoopTotalMonsters;
 412         gCoopTotalSecrets := Game_CoopTotalSecrets;
 413
 414         ///// Çàãðóæàåì ñîñòîÿíèå êàðòû /////
 415         g_Map_LoadState(st);
 416         ///// /////
 417
 418         ///// Çàãðóæàåì ñîñòîÿíèå ïðåäìåòîâ /////
 419         g_Items_LoadState(st);
 420         ///// /////
 421
 422         ///// Çàãðóæàåì ñîñòîÿíèå òðèããåðîâ /////
 423         g_Triggers_LoadState(st);
 424         ///// /////
 425
 426         ///// Çàãðóæàåì ñîñòîÿíèå îðóæèÿ /////
 427         g_Weapon_LoadState(st);
 428         ///// /////
 429
 430         ///// Çàãðóæàåì ñîñòîÿíèå ìîíñòðîâ /////
 431         g_Monsters_LoadState(st);
 432         ///// /////
 433
 434         ///// Çàãðóæàåì ñîñòîÿíèå òðóïîâ /////
 435         g_Player_Corpses_LoadState(st);
 436         ///// /////
 437
 438         ///// Çàãðóæàåì èãðîêîâ (â òîì ÷èñëå áîòîâ) /////
 439         if nPlayers > 0 then
 440         begin
 441           // Çàãðóæàåì
 442           for i := 0 to nPlayers-1 do g_Player_CreateFromState(st);
 443         end;
 444
 445         // Ïðèâÿçûâàåì îñíîâíûõ èãðîêîâ ê îáëàñòÿì ïðîñìîòðà
 446         gPlayer1 := g_Player_Get(PID1);
 447         gPlayer2 := g_Player_Get(PID2);
 448
 449         if (gPlayer1 <> nil) then
 450         begin
 451           gPlayer1.Name := gPlayer1Settings.Name;
 452           gPlayer1.FPreferredTeam := gPlayer1Settings.Team;
 453           gPlayer1.FActualModelName := gPlayer1Settings.Model;
 454           gPlayer1.SetModel(gPlayer1.FActualModelName);
 455           gPlayer1.SetColor(gPlayer1Settings.Color);
 456         end;
 457
 458         if (gPlayer2 <> nil) then
 459         begin
 460           gPlayer2.Name := gPlayer2Settings.Name;
 461           gPlayer2.FPreferredTeam := gPlayer2Settings.Team;
 462           gPlayer2.FActualModelName := gPlayer2Settings.Model;
 463           gPlayer2.SetModel(gPlayer2.FActualModelName);
 464           gPlayer2.SetColor(gPlayer2Settings.Color);
 465         end;
 466         ///// /////
 467
 468         ///// Ìàðêåð îêîí÷àíèÿ /////
 469         if not utils.checkSign(st, 'END') then raise XStreamError.Create('no end marker');
 470         if (utils.readByte(st) <> 0) then raise XStreamError.Create('invalid end marker');
 471         ///// /////
 472
 473         // Èùåì òðèããåðû ñ óñëîâèåì ñìåðòè ìîíñòðîâ
 474         if (gTriggers <> nil) then g_Map_ReAdd_DieTriggers();
 475
 476         // done
 477         gLoadGameMode := false;
 478         result := true;
 479       except
 480         begin
 481           errpos := LongWord(st.position);
 482           raise;
 483         end;
 484       end;
 485     finally
 486       st.Free();
 487     end;
 488   except
 489     on e: Exception do
 490       begin
 491         g_Console_Add(_lc[I_GAME_ERROR_LOAD]);
 492         e_WriteLog('LoadState Error: '+e.message, MSG_WARNING);
 493         {$IF DEFINED(D2F_DEBUG)}e_LogWritefln('stream error position: 0x%08x', [errpos], MSG_WARNING);{$ENDIF}
 494         gLoadGameMode := false;
 495         result := true;
 496         if not gameCleared then g_Game_Free();
 497         {$IF DEFINED(D2F_DEBUG)}e_WriteStackTrace(e.message);{$ENDIF}
 498       end;
 499   end;
 500 end;
 501
 502
 503 function g_SaveGame (n: Integer; const aname: AnsiString): Boolean;
 504 begin
 505   result := false;
 506   if (n < 0) or (n > 65535) then exit;
 507   result := g_SaveGameTo(buildSaveName(n), aname, true);
 508 end;
 509
 510
 511 function g_LoadGame (n: Integer): Boolean;
 512 begin
 513   result := false;
 514   if (n < 0) or (n > 65535) then exit;
 515   result := g_LoadGameFrom(buildSaveName(n));
 516 end;
 517
 518
 519 end.