src/game/g_items.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_items;
  18
  19 interface
  20
  21 uses
  22   g_textures, g_phys, g_saveload, BinEditor, MAPDEF;
  23
  24 Type
  25   PItem = ^TItem;
  26   TItem = record
  27   private
  28     //treeNode: Integer;
  29     slotIsUsed: Boolean;
  30     arrIdx: Integer; // in ggItems
  31
  32   public
  33     ItemType:      Byte;
  34     Respawnable:   Boolean;
  35     InitX, InitY:  Integer;
  36     RespawnTime:   Word;
  37     Live:          Boolean;
  38     Fall:          Boolean;
  39     QuietRespawn:  Boolean;
  40     SpawnTrigger:  Integer;
  41     Obj:           TObj;
  42     Animation:     TAnimation;
  43
  44     procedure positionChanged (); //WARNING! call this after monster position was changed, or coldet will not work right!
  45
  46     property myid: Integer read arrIdx;
  47   end;
  48
  49 procedure g_Items_LoadData();
  50 procedure g_Items_FreeData();
  51 procedure g_Items_Init();
  52 procedure g_Items_Free();
  53 function g_Items_Create(X, Y: Integer; ItemType: Byte;
  54            Fall, Respawnable: Boolean; AdjCoord: Boolean = False; ForcedID: Integer = -1): DWORD;
  55 procedure g_Items_Update();
  56 procedure g_Items_Draw();
  57 procedure g_Items_Pick(ID: DWORD);
  58 procedure g_Items_Remove(ID: DWORD);
  59 procedure g_Items_SaveState(var Mem: TBinMemoryWriter);
  60 procedure g_Items_LoadState(var Mem: TBinMemoryReader);
  61
  62 procedure g_Items_RestartRound ();
  63
  64 function g_Items_ValidId (idx: Integer): Boolean; inline;
  65 function g_Items_ByIdx (idx: Integer): PItem;
  66 function g_Items_ObjByIdx (idx: Integer): PObj;
  67
  68 procedure g_Items_EmitPickupSound (idx: Integer); // at item position
  69 procedure g_Items_EmitPickupSoundAt (idx, x, y: Integer);
  70
  71
  72 type
  73   TItemEachAliveCB = function (it: PItem): Boolean is nested; // return `true` to stop
  74
  75 function g_Items_ForEachAlive (cb: TItemEachAliveCB; backwards: Boolean=false): Boolean;
  76
  77
  78 var
  79   gItemsTexturesID: Array [1..ITEM_MAX] of DWORD;
  80   gMaxDist: Integer = 1;
  81   ITEM_RESPAWNTIME: Integer = 60 * 36;
  82
  83 implementation
  84
  85 uses
  86   g_basic, e_graphics, g_sound, g_main, g_gfx, g_map,
  87   Math, g_game, g_triggers, g_console, SysUtils, g_player, g_net, g_netmsg,
  88   e_log,
  89   g_grid, binheap;
  90
  91
  92 var
  93   ggItems: Array of TItem = nil;
  94
  95
  96 // ////////////////////////////////////////////////////////////////////////// //
  97 var
  98   freeIds: TBinaryHeapInt = nil; // free item ids
  99
 100
 101 // ////////////////////////////////////////////////////////////////////////// //
 102 function g_Items_ValidId (idx: Integer): Boolean; inline;
 103 begin
 104   result := false;
 105   if (idx < 0) or (idx > High(ggItems)) then exit;
 106   if not ggItems[idx].slotIsUsed then exit;
 107   result := true;
 108 end;
 109
 110
 111 function g_Items_ByIdx (idx: Integer): PItem;
 112 begin
 113   if (idx < 0) or (idx > High(ggItems)) then raise Exception.Create('g_ItemObjByIdx: invalid index');
 114   result := @ggItems[idx];
 115   if not result.slotIsUsed then raise Exception.Create('g_ItemObjByIdx: requested inexistent item');
 116 end;
 117
 118
 119 function g_Items_ObjByIdx (idx: Integer): PObj;
 120 begin
 121   if (idx < 0) or (idx > High(ggItems)) then raise Exception.Create('g_ItemObjByIdx: invalid index');
 122   if not ggItems[idx].slotIsUsed then raise Exception.Create('g_ItemObjByIdx: requested inexistent item');
 123   result := @ggItems[idx].Obj;
 124 end;
 125
 126
 127 // ////////////////////////////////////////////////////////////////////////// //
 128 procedure TItem.positionChanged ();
 129 begin
 130 end;
 131
 132
 133 // ////////////////////////////////////////////////////////////////////////// //
 134 const
 135   ITEM_SIGNATURE = $4D455449; // 'ITEM'
 136
 137   ITEMSIZE: Array [ITEM_MEDKIT_SMALL..ITEM_MAX] of Array [0..1] of Byte =
 138     (((14), (15)), // MEDKIT_SMALL
 139      ((28), (19)), // MEDKIT_LARGE
 140      ((28), (19)), // MEDKIT_BLACK
 141      ((31), (16)), // ARMOR_GREEN
 142      ((31), (16)), // ARMOR_BLUE
 143      ((25), (25)), // SPHERE_BLUE
 144      ((25), (25)), // SPHERE_WHITE
 145      ((24), (47)), // SUIT
 146      ((14), (27)), // OXYGEN
 147      ((25), (25)), // INVUL
 148      ((62), (24)), // WEAPON_SAW
 149      ((63), (12)), // WEAPON_SHOTGUN1
 150      ((54), (13)), // WEAPON_SHOTGUN2
 151      ((54), (16)), // WEAPON_CHAINGUN
 152      ((62), (16)), // WEAPON_ROCKETLAUNCHER
 153      ((54), (16)), // WEAPON_PLASMA
 154      ((61), (36)), // WEAPON_BFG
 155      ((54), (16)), // WEAPON_SUPERPULEMET
 156      (( 9), (11)), // AMMO_BULLETS
 157      ((28), (16)), // AMMO_BULLETS_BOX
 158      ((15), ( 7)), // AMMO_SHELLS
 159      ((32), (12)), // AMMO_SHELLS_BOX
 160      ((12), (27)), // AMMO_ROCKET
 161      ((54), (21)), // AMMO_ROCKET_BOX
 162      ((15), (12)), // AMMO_CELL
 163      ((32), (21)), // AMMO_CELL_BIG
 164      ((22), (29)), // AMMO_BACKPACK
 165      ((16), (16)), // KEY_RED
 166      ((16), (16)), // KEY_GREEN
 167      ((16), (16)), // KEY_BLUE
 168      (( 1), ( 1)), // WEAPON_KASTET
 169      ((43), (16)), // WEAPON_PISTOL
 170      ((14), (18)), // BOTTLE
 171      ((16), (15)), // HELMET
 172      ((32), (24)), // JETPACK
 173      ((25), (25)), // INVIS
 174      ((53), (20)), // WEAPON_FLAMETHROWER
 175      ((13), (20))); // AMMO_FUELCAN
 176
 177 procedure InitTextures();
 178 begin
 179   g_Texture_Get('ITEM_MEDKIT_SMALL',     gItemsTexturesID[ITEM_MEDKIT_SMALL]);
 180   g_Texture_Get('ITEM_MEDKIT_LARGE',     gItemsTexturesID[ITEM_MEDKIT_LARGE]);
 181   g_Texture_Get('ITEM_MEDKIT_BLACK',     gItemsTexturesID[ITEM_MEDKIT_BLACK]);
 182   g_Texture_Get('ITEM_SUIT',             gItemsTexturesID[ITEM_SUIT]);
 183   g_Texture_Get('ITEM_OXYGEN',           gItemsTexturesID[ITEM_OXYGEN]);
 184   g_Texture_Get('ITEM_WEAPON_SAW',       gItemsTexturesID[ITEM_WEAPON_SAW]);
 185   g_Texture_Get('ITEM_WEAPON_SHOTGUN1',  gItemsTexturesID[ITEM_WEAPON_SHOTGUN1]);
 186   g_Texture_Get('ITEM_WEAPON_SHOTGUN2',  gItemsTexturesID[ITEM_WEAPON_SHOTGUN2]);
 187   g_Texture_Get('ITEM_WEAPON_CHAINGUN',  gItemsTexturesID[ITEM_WEAPON_CHAINGUN]);
 188   g_Texture_Get('ITEM_WEAPON_ROCKETLAUNCHER', gItemsTexturesID[ITEM_WEAPON_ROCKETLAUNCHER]);
 189   g_Texture_Get('ITEM_WEAPON_PLASMA',    gItemsTexturesID[ITEM_WEAPON_PLASMA]);
 190   g_Texture_Get('ITEM_WEAPON_BFG',       gItemsTexturesID[ITEM_WEAPON_BFG]);
 191   g_Texture_Get('ITEM_WEAPON_SUPERPULEMET', gItemsTexturesID[ITEM_WEAPON_SUPERPULEMET]);
 192   g_Texture_Get('ITEM_WEAPON_FLAMETHROWER', gItemsTexturesID[ITEM_WEAPON_FLAMETHROWER]);
 193   g_Texture_Get('ITEM_AMMO_BULLETS',     gItemsTexturesID[ITEM_AMMO_BULLETS]);
 194   g_Texture_Get('ITEM_AMMO_BULLETS_BOX', gItemsTexturesID[ITEM_AMMO_BULLETS_BOX]);
 195   g_Texture_Get('ITEM_AMMO_SHELLS',      gItemsTexturesID[ITEM_AMMO_SHELLS]);
 196   g_Texture_Get('ITEM_AMMO_SHELLS_BOX',  gItemsTexturesID[ITEM_AMMO_SHELLS_BOX]);
 197   g_Texture_Get('ITEM_AMMO_ROCKET',      gItemsTexturesID[ITEM_AMMO_ROCKET]);
 198   g_Texture_Get('ITEM_AMMO_ROCKET_BOX',  gItemsTexturesID[ITEM_AMMO_ROCKET_BOX]);
 199   g_Texture_Get('ITEM_AMMO_CELL',        gItemsTexturesID[ITEM_AMMO_CELL]);
 200   g_Texture_Get('ITEM_AMMO_CELL_BIG',    gItemsTexturesID[ITEM_AMMO_CELL_BIG]);
 201   g_Texture_Get('ITEM_AMMO_FUELCAN',     gItemsTexturesID[ITEM_AMMO_FUELCAN]);
 202   g_Texture_Get('ITEM_AMMO_BACKPACK',    gItemsTexturesID[ITEM_AMMO_BACKPACK]);
 203   g_Texture_Get('ITEM_KEY_RED',          gItemsTexturesID[ITEM_KEY_RED]);
 204   g_Texture_Get('ITEM_KEY_GREEN',        gItemsTexturesID[ITEM_KEY_GREEN]);
 205   g_Texture_Get('ITEM_KEY_BLUE',         gItemsTexturesID[ITEM_KEY_BLUE]);
 206   g_Texture_Get('ITEM_WEAPON_KASTET',    gItemsTexturesID[ITEM_WEAPON_KASTET]);
 207   g_Texture_Get('ITEM_WEAPON_PISTOL',    gItemsTexturesID[ITEM_WEAPON_PISTOL]);
 208   g_Texture_Get('ITEM_JETPACK',          gItemsTexturesID[ITEM_JETPACK]);
 209 end;
 210
 211 procedure g_Items_LoadData();
 212 begin
 213   e_WriteLog('Loading items data...', MSG_NOTIFY);
 214
 215   g_Sound_CreateWADEx('SOUND_ITEM_RESPAWNITEM', GameWAD+':SOUNDS\RESPAWNITEM');
 216   g_Sound_CreateWADEx('SOUND_ITEM_GETRULEZ', GameWAD+':SOUNDS\GETRULEZ');
 217   g_Sound_CreateWADEx('SOUND_ITEM_GETWEAPON', GameWAD+':SOUNDS\GETWEAPON');
 218   g_Sound_CreateWADEx('SOUND_ITEM_GETITEM', GameWAD+':SOUNDS\GETITEM');
 219
 220   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_BLUESPHERE', GameWAD+':TEXTURES\SBLUE', 32, 32, 4, True);
 221   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_WHITESPHERE', GameWAD+':TEXTURES\SWHITE', 32, 32, 4, True);
 222   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_ARMORGREEN', GameWAD+':TEXTURES\ARMORGREEN', 32, 16, 3, True);
 223   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_ARMORBLUE', GameWAD+':TEXTURES\ARMORBLUE', 32, 16, 3, True);
 224   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_INVUL', GameWAD+':TEXTURES\INVUL', 32, 32, 4, True);
 225   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_INVIS', GameWAD+':TEXTURES\INVIS', 32, 32, 4, True);
 226   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_RESPAWN', GameWAD+':TEXTURES\ITEMRESPAWN', 32, 32, 5, True);
 227   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_BOTTLE', GameWAD+':TEXTURES\BOTTLE', 16, 32, 4, True);
 228   g_Frames_CreateWAD(nil, 'FRAMES_ITEM_HELMET', GameWAD+':TEXTURES\HELMET', 16, 16, 4, True);
 229   g_Frames_CreateWAD(nil, 'FRAMES_FLAG_RED', GameWAD+':TEXTURES\FLAGRED', 64, 64, 5, False);
 230   g_Frames_CreateWAD(nil, 'FRAMES_FLAG_BLUE', GameWAD+':TEXTURES\FLAGBLUE', 64, 64, 5, False);
 231   g_Frames_CreateWAD(nil, 'FRAMES_FLAG_DOM', GameWAD+':TEXTURES\FLAGDOM', 64, 64, 5, False);
 232   g_Texture_CreateWADEx('ITEM_MEDKIT_SMALL', GameWAD+':TEXTURES\MED1');
 233   g_Texture_CreateWADEx('ITEM_MEDKIT_LARGE', GameWAD+':TEXTURES\MED2');
 234   g_Texture_CreateWADEx('ITEM_WEAPON_SAW', GameWAD+':TEXTURES\SAW');
 235   g_Texture_CreateWADEx('ITEM_WEAPON_PISTOL', GameWAD+':TEXTURES\PISTOL');
 236   g_Texture_CreateWADEx('ITEM_WEAPON_KASTET', GameWAD+':TEXTURES\KASTET');
 237   g_Texture_CreateWADEx('ITEM_WEAPON_SHOTGUN1', GameWAD+':TEXTURES\SHOTGUN1');
 238   g_Texture_CreateWADEx('ITEM_WEAPON_SHOTGUN2', GameWAD+':TEXTURES\SHOTGUN2');
 239   g_Texture_CreateWADEx('ITEM_WEAPON_CHAINGUN', GameWAD+':TEXTURES\MGUN');
 240   g_Texture_CreateWADEx('ITEM_WEAPON_ROCKETLAUNCHER', GameWAD+':TEXTURES\RLAUNCHER');
 241   g_Texture_CreateWADEx('ITEM_WEAPON_PLASMA', GameWAD+':TEXTURES\PGUN');
 242   g_Texture_CreateWADEx('ITEM_WEAPON_BFG', GameWAD+':TEXTURES\BFG');
 243   g_Texture_CreateWADEx('ITEM_WEAPON_SUPERPULEMET', GameWAD+':TEXTURES\SPULEMET');
 244   g_Texture_CreateWADEx('ITEM_WEAPON_FLAMETHROWER', GameWAD+':TEXTURES\FLAMETHROWER');
 245   g_Texture_CreateWADEx('ITEM_AMMO_BULLETS', GameWAD+':TEXTURES\CLIP');
 246   g_Texture_CreateWADEx('ITEM_AMMO_BULLETS_BOX', GameWAD+':TEXTURES\AMMO');
 247   g_Texture_CreateWADEx('ITEM_AMMO_SHELLS', GameWAD+':TEXTURES\SHELL1');
 248   g_Texture_CreateWADEx('ITEM_AMMO_SHELLS_BOX', GameWAD+':TEXTURES\SHELL2');
 249   g_Texture_CreateWADEx('ITEM_AMMO_ROCKET', GameWAD+':TEXTURES\ROCKET');
 250   g_Texture_CreateWADEx('ITEM_AMMO_ROCKET_BOX', GameWAD+':TEXTURES\ROCKETS');
 251   g_Texture_CreateWADEx('ITEM_AMMO_CELL', GameWAD+':TEXTURES\CELL');
 252   g_Texture_CreateWADEx('ITEM_AMMO_CELL_BIG', GameWAD+':TEXTURES\CELL2');
 253   g_Texture_CreateWADEx('ITEM_AMMO_FUELCAN', GameWAD+':TEXTURES\FUELCAN');
 254   g_Texture_CreateWADEx('ITEM_AMMO_BACKPACK', GameWAD+':TEXTURES\BPACK');
 255   g_Texture_CreateWADEx('ITEM_KEY_RED', GameWAD+':TEXTURES\KEYR');
 256   g_Texture_CreateWADEx('ITEM_KEY_GREEN', GameWAD+':TEXTURES\KEYG');
 257   g_Texture_CreateWADEx('ITEM_KEY_BLUE', GameWAD+':TEXTURES\KEYB');
 258   g_Texture_CreateWADEx('ITEM_OXYGEN', GameWAD+':TEXTURES\OXYGEN');
 259   g_Texture_CreateWADEx('ITEM_SUIT', GameWAD+':TEXTURES\SUIT');
 260   g_Texture_CreateWADEx('ITEM_WEAPON_KASTET', GameWAD+':TEXTURES\KASTET');
 261   g_Texture_CreateWADEx('ITEM_MEDKIT_BLACK', GameWAD+':TEXTURES\BMED');
 262   g_Texture_CreateWADEx('ITEM_JETPACK', GameWAD+':TEXTURES\JETPACK');
 263
 264   InitTextures();
 265
 266   freeIds := binHeapNewIntLess();
 267 end;
 268
 269
 270 procedure g_Items_FreeData();
 271 begin
 272   e_WriteLog('Releasing items data...', MSG_NOTIFY);
 273
 274   g_Sound_Delete('SOUND_ITEM_RESPAWNITEM');
 275   g_Sound_Delete('SOUND_ITEM_GETRULEZ');
 276   g_Sound_Delete('SOUND_ITEM_GETWEAPON');
 277   g_Sound_Delete('SOUND_ITEM_GETITEM');
 278
 279   g_Frames_DeleteByName('FRAMES_ITEM_BLUESPHERE');
 280   g_Frames_DeleteByName('FRAMES_ITEM_WHITESPHERE');
 281   g_Frames_DeleteByName('FRAMES_ITEM_ARMORGREEN');
 282   g_Frames_DeleteByName('FRAMES_ITEM_ARMORBLUE');
 283   g_Frames_DeleteByName('FRAMES_ITEM_INVUL');
 284   g_Frames_DeleteByName('FRAMES_ITEM_INVIS');
 285   g_Frames_DeleteByName('FRAMES_ITEM_RESPAWN');
 286   g_Frames_DeleteByName('FRAMES_ITEM_BOTTLE');
 287   g_Frames_DeleteByName('FRAMES_ITEM_HELMET');
 288   g_Frames_DeleteByName('FRAMES_FLAG_RED');
 289   g_Frames_DeleteByName('FRAMES_FLAG_BLUE');
 290   g_Frames_DeleteByName('FRAMES_FLAG_DOM');
 291   g_Texture_Delete('ITEM_MEDKIT_SMALL');
 292   g_Texture_Delete('ITEM_MEDKIT_LARGE');
 293   g_Texture_Delete('ITEM_WEAPON_SAW');
 294   g_Texture_Delete('ITEM_WEAPON_PISTOL');
 295   g_Texture_Delete('ITEM_WEAPON_KASTET');
 296   g_Texture_Delete('ITEM_WEAPON_SHOTGUN1');
 297   g_Texture_Delete('ITEM_WEAPON_SHOTGUN2');
 298   g_Texture_Delete('ITEM_WEAPON_CHAINGUN');
 299   g_Texture_Delete('ITEM_WEAPON_ROCKETLAUNCHER');
 300   g_Texture_Delete('ITEM_WEAPON_PLASMA');
 301   g_Texture_Delete('ITEM_WEAPON_BFG');
 302   g_Texture_Delete('ITEM_WEAPON_SUPERPULEMET');
 303   g_Texture_Delete('ITEM_WEAPON_FLAMETHROWER');
 304   g_Texture_Delete('ITEM_AMMO_BULLETS');
 305   g_Texture_Delete('ITEM_AMMO_BULLETS_BOX');
 306   g_Texture_Delete('ITEM_AMMO_SHELLS');
 307   g_Texture_Delete('ITEM_AMMO_SHELLS_BOX');
 308   g_Texture_Delete('ITEM_AMMO_ROCKET');
 309   g_Texture_Delete('ITEM_AMMO_ROCKET_BOX');
 310   g_Texture_Delete('ITEM_AMMO_CELL');
 311   g_Texture_Delete('ITEM_AMMO_CELL_BIG');
 312   g_Texture_Delete('ITEM_AMMO_FUELCAN');
 313   g_Texture_Delete('ITEM_AMMO_BACKPACK');
 314   g_Texture_Delete('ITEM_KEY_RED');
 315   g_Texture_Delete('ITEM_KEY_GREEN');
 316   g_Texture_Delete('ITEM_KEY_BLUE');
 317   g_Texture_Delete('ITEM_OXYGEN');
 318   g_Texture_Delete('ITEM_SUIT');
 319   g_Texture_Delete('ITEM_WEAPON_KASTET');
 320   g_Texture_Delete('ITEM_MEDKIT_BLACK');
 321   g_Texture_Delete('ITEM_JETPACK');
 322
 323   freeIds.Free();
 324 end;
 325
 326
 327 procedure releaseItem (idx: Integer);
 328 var
 329   it: PItem;
 330 begin
 331   if (idx < 0) or (idx > High(ggItems)) then raise Exception.Create('releaseItem: invalid item id');
 332   it := @ggItems[idx];
 333   if not it.slotIsUsed then raise Exception.Create('releaseItem: trying to release unallocated item');
 334   if (it.arrIdx <> idx) then raise Exception.Create('releaseItem: arrIdx inconsistency');
 335   it.slotIsUsed := false;
 336   if (it.Animation <> nil) then
 337   begin
 338     it.Animation.Free();
 339     it.Animation := nil;
 340   end;
 341   it.Live := False;
 342   it.SpawnTrigger := -1;
 343   it.ItemType := ITEM_NONE;
 344   freeIds.insert(it.arrIdx);
 345 end;
 346
 347
 348 function allocItem (): DWORD;
 349 var
 350   i, olen: Integer;
 351   it: PItem;
 352 begin
 353   if (freeIds.count = 0) then
 354   begin
 355     // no free slots
 356     olen := Length(ggItems);
 357     SetLength(ggItems, olen+64);
 358     for i := olen to High(ggItems) do
 359     begin
 360       it := @ggItems[i];
 361       it.slotIsUsed := false;
 362       it.arrIdx := i;
 363       it.ItemType := ITEM_NONE;
 364       it.Animation := nil;
 365       it.Live := false;
 366       it.SpawnTrigger := -1;
 367       it.Respawnable := false;
 368       freeIds.insert(i);
 369     end;
 370   end;
 371
 372   result := freeIds.front;
 373   freeIds.popFront();
 374
 375   if (Integer(result) > High(ggItems)) then raise Exception.Create('allocItem: freeid list corrupted');
 376   if (ggItems[result].arrIdx <> Integer(result)) then raise Exception.Create('allocItem: arrIdx inconsistency');
 377 end;
 378
 379
 380 // it will be slow if the slot is free (we have to rebuild the heap)
 381 function wantItemSlot (slot: Integer): Integer;
 382 var
 383   i, olen: Integer;
 384   it: PItem;
 385   rebuildFreeList: Boolean = true;
 386 begin
 387   if (slot < 0) or (slot > $0fffffff) then raise Exception.Create('wantItemSlot: bad item slot request');
 388   // do we need to grow item storate?
 389   olen := Length(ggItems);
 390   if (slot >= olen) then
 391   begin
 392     // need more spice!
 393     SetLength(ggItems, slot+64);
 394     // add free slots to free list
 395     for i := olen to High(ggItems) do
 396     begin
 397       it := @ggItems[i];
 398       it.slotIsUsed := false;
 399       it.arrIdx := i;
 400       it.ItemType := ITEM_NONE;
 401       it.Animation := nil;
 402       it.Live := false;
 403       it.SpawnTrigger := -1;
 404       it.Respawnable := false;
 405       if (i <> slot) then freeIds.insert(i);
 406     end;
 407     rebuildFreeList := false;
 408   end;
 409
 410   it := @ggItems[slot];
 411   if not it.slotIsUsed then
 412   begin
 413     // this is unused slot; get it, and rebuild id list
 414     if rebuildFreeList then
 415     begin
 416       freeIds.clear();
 417       for i := 0 to High(ggItems) do
 418       begin
 419         if (i <> slot) and (not it.slotIsUsed) then freeIds.insert(i);
 420       end;
 421     end;
 422   end
 423   else
 424   begin
 425     // it will be readded
 426     it.slotIsUsed := false;
 427   end;
 428
 429   result := slot;
 430 end;
 431
 432
 433 // ////////////////////////////////////////////////////////////////////////// //
 434 procedure g_Items_Init ();
 435 var
 436   a, b: Integer;
 437 begin
 438   if gMapInfo.Height > gPlayerScreenSize.Y then a := gMapInfo.Height-gPlayerScreenSize.Y else a := gMapInfo.Height;
 439   if gMapInfo.Width > gPlayerScreenSize.X then b := gMapInfo.Width-gPlayerScreenSize.X else b := gMapInfo.Width;
 440   gMaxDist := Trunc(Hypot(a, b));
 441 end;
 442
 443
 444 procedure g_Items_Free ();
 445 var
 446   i: Integer;
 447 begin
 448   if (ggItems <> nil) then
 449   begin
 450     for i := 0 to High(ggItems) do ggItems[i].Animation.Free();
 451     ggItems := nil;
 452   end;
 453   freeIds.clear();
 454 end;
 455
 456
 457 function g_Items_Create (X, Y: Integer; ItemType: Byte;
 458            Fall, Respawnable: Boolean; AdjCoord: Boolean = False; ForcedID: Integer = -1): DWORD;
 459 var
 460   find_id: DWORD;
 461   ID: DWORD;
 462   it: PItem;
 463 begin
 464   if ForcedID < 0 then find_id := allocItem() else find_id := wantItemSlot(ForcedID);
 465
 466   //{$IF DEFINED(D2F_DEBUG)}e_WriteLog(Format('allocated item #%d', [Integer(find_id)]), MSG_NOTIFY);{$ENDIF}
 467
 468   it := @ggItems[find_id];
 469
 470   if (it.arrIdx <> Integer(find_id)) then raise Exception.Create('g_Items_Create: arrIdx inconsistency');
 471   //it.arrIdx := find_id;
 472   it.slotIsUsed := true;
 473
 474   it.ItemType := ItemType;
 475   it.Respawnable := Respawnable;
 476   if g_Game_IsServer and (ITEM_RESPAWNTIME = 0) then it.Respawnable := False;
 477   it.InitX := X;
 478   it.InitY := Y;
 479   it.RespawnTime := 0;
 480   it.Fall := Fall;
 481   it.Live := True;
 482   it.QuietRespawn := False;
 483
 484   g_Obj_Init(@it.Obj);
 485   it.Obj.X := X;
 486   it.Obj.Y := Y;
 487   it.Obj.Rect.Width := ITEMSIZE[ItemType][0];
 488   it.Obj.Rect.Height := ITEMSIZE[ItemType][1];
 489
 490   it.Animation := nil;
 491   it.SpawnTrigger := -1;
 492
 493   // Êîîðäèíàòû îòíîñèòåëüíî öåíòðà íèæíåãî ðåáðà
 494   if AdjCoord then
 495   begin
 496     with it^ do
 497     begin
 498       Obj.X := X - (Obj.Rect.Width div 2);
 499       Obj.Y := Y - Obj.Rect.Height;
 500       InitX := Obj.X;
 501       InitY := Obj.Y;
 502     end;
 503   end;
 504
 505   // Óñòàíîâêà àíèìàöèè
 506   case it.ItemType of
 507     ITEM_ARMOR_GREEN: if g_Frames_Get(ID, 'FRAMES_ITEM_ARMORGREEN') then it.Animation := TAnimation.Create(ID, True, 20);
 508     ITEM_ARMOR_BLUE: if g_Frames_Get(ID, 'FRAMES_ITEM_ARMORBLUE') then it.Animation := TAnimation.Create(ID, True, 20);
 509     ITEM_SPHERE_BLUE: if g_Frames_Get(ID, 'FRAMES_ITEM_BLUESPHERE') then it.Animation := TAnimation.Create(ID, True, 15);
 510     ITEM_SPHERE_WHITE: if g_Frames_Get(ID, 'FRAMES_ITEM_WHITESPHERE') then it.Animation := TAnimation.Create(ID, True, 20);
 511     ITEM_INVUL: if g_Frames_Get(ID, 'FRAMES_ITEM_INVUL') then it.Animation := TAnimation.Create(ID, True, 20);
 512     ITEM_INVIS: if g_Frames_Get(ID, 'FRAMES_ITEM_INVIS') then it.Animation := TAnimation.Create(ID, True, 20);
 513     ITEM_BOTTLE: if g_Frames_Get(ID, 'FRAMES_ITEM_BOTTLE') then it.Animation := TAnimation.Create(ID, True, 20);
 514     ITEM_HELMET: if g_Frames_Get(ID, 'FRAMES_ITEM_HELMET') then it.Animation := TAnimation.Create(ID, True, 20);
 515   end;
 516
 517   it.positionChanged();
 518
 519   result := find_id;
 520 end;
 521
 522
 523 procedure g_Items_Update ();
 524 var
 525   i, j, k: Integer;
 526   ID: DWord;
 527   Anim: TAnimation;
 528   m: Word;
 529   r, nxt: Boolean;
 530 begin
 531   if (ggItems = nil) then exit;
 532
 533   for i := 0 to High(ggItems) do
 534   begin
 535     if (ggItems[i].ItemType = ITEM_NONE) then continue;
 536
 537     with ggItems[i] do
 538     begin
 539       nxt := False;
 540
 541       if Live then
 542       begin
 543         if Fall then
 544         begin
 545           m := g_Obj_Move(@Obj, True, True);
 546           positionChanged(); // this updates spatial accelerators
 547
 548           // Ñîïðîòèâëåíèå âîçäóõà
 549           if gTime mod (GAME_TICK*2) = 0 then Obj.Vel.X := z_dec(Obj.Vel.X, 1);
 550
 551           // Åñëè âûïàë çà êàðòó
 552           if WordBool(m and MOVE_FALLOUT) then
 553           begin
 554             if SpawnTrigger = -1 then
 555             begin
 556               g_Items_Pick(i);
 557             end
 558             else
 559             begin
 560               g_Items_Remove(i);
 561               if g_Game_IsServer and g_Game_IsNet then MH_SEND_ItemDestroy(True, i);
 562             end;
 563             continue;
 564           end;
 565         end;
 566
 567         // Åñëè èãðîêè ïîáëèçîñòè
 568         if (gPlayers <> nil) then
 569         begin
 570           j := Random(Length(gPlayers))-1;
 571
 572           for k := 0 to High(gPlayers) do
 573           begin
 574             Inc(j);
 575             if j > High(gPlayers) then j := 0;
 576
 577             if (gPlayers[j] <> nil) and gPlayers[j].Live and g_Obj_Collide(@gPlayers[j].Obj, @Obj) then
 578             begin
 579               if g_Game_IsClient then continue;
 580
 581               if not gPlayers[j].PickItem(ItemType, Respawnable, r) then continue;
 582
 583               if g_Game_IsNet then MH_SEND_PlayerStats(gPlayers[j].UID);
 584
 585               {
 586                 Doom 2D: Original:
 587                 1. I_NONE,I_CLIP,I_SHEL,I_ROCKET,I_CELL,I_AMMO,I_SBOX,I_RBOX,I_CELP,I_BPACK,I_CSAW,I_SGUN,I_SGUN2,I_MGUN,I_LAUN,I_PLAS,I_BFG,I_GUN2
 588                 +2. I_MEGA,I_INVL,I_SUPER
 589                 3. I_STIM,I_MEDI,I_ARM1,I_ARM2,I_AQUA,I_KEYR,I_KEYG,I_KEYB,I_SUIT,I_RTORCH,I_GTORCH,I_BTORCH,I_GOR1,I_FCAN
 590               }
 591               g_Items_EmitPickupSoundAt(i, gPlayers[j].Obj.X, gPlayers[j].Obj.Y);
 592
 593               // Íàäî óáðàòü ñ êàðòû, åñëè ýòî íå êëþ÷, êîòîðûì íóæíî ïîäåëèòüñÿ ñ äðóãèì èãðîêîì
 594               if r then
 595               begin
 596                 if not Respawnable then g_Items_Remove(i) else g_Items_Pick(i);
 597                 if g_Game_IsNet then MH_SEND_ItemDestroy(False, i);
 598                 nxt := True;
 599                 break;
 600               end;
 601             end;
 602           end;
 603         end;
 604
 605         if nxt then continue;
 606       end;
 607
 608       if Respawnable and g_Game_IsServer then
 609       begin
 610         DecMin(RespawnTime, 0);
 611         if (RespawnTime = 0) and (not Live) then
 612         begin
 613           if not QuietRespawn then g_Sound_PlayExAt('SOUND_ITEM_RESPAWNITEM', InitX, InitY);
 614
 615           if g_Frames_Get(ID, 'FRAMES_ITEM_RESPAWN') then
 616           begin
 617             Anim := TAnimation.Create(ID, False, 4);
 618             g_GFX_OnceAnim(InitX+(Obj.Rect.Width div 2)-16, InitY+(Obj.Rect.Height div 2)-16, Anim);
 619             Anim.Free();
 620           end;
 621
 622           Obj.X := InitX;
 623           Obj.Y := InitY;
 624           Obj.Vel.X := 0;
 625           Obj.Vel.Y := 0;
 626           Obj.Accel.X := 0;
 627           Obj.Accel.Y := 0;
 628           positionChanged(); // this updates spatial accelerators
 629
 630           Live := true;
 631
 632           if g_Game_IsNet then MH_SEND_ItemSpawn(QuietRespawn, i);
 633           QuietRespawn := false;
 634         end;
 635       end;
 636
 637       if (Animation <> nil) then Animation.Update();
 638     end;
 639   end;
 640 end;
 641
 642
 643 procedure g_Items_Draw ();
 644 var
 645   i: Integer;
 646 begin
 647   if (ggItems = nil) then exit;
 648
 649   for i := 0 to High(ggItems) do
 650   begin
 651     if not ggItems[i].Live then continue;
 652
 653     with ggItems[i] do
 654     begin
 655       if g_Collide(Obj.X, Obj.Y, Obj.Rect.Width, Obj.Rect.Height, sX, sY, sWidth, sHeight) then
 656       begin
 657         if (Animation = nil) then
 658         begin
 659           e_Draw(gItemsTexturesID[ItemType], Obj.X, Obj.Y, 0, true, false);
 660         end
 661         else
 662         begin
 663           Animation.Draw(Obj.X, Obj.Y, M_NONE);
 664         end;
 665
 666         if g_debug_Frames then
 667         begin
 668           e_DrawQuad(Obj.X+Obj.Rect.X,
 669                      Obj.Y+Obj.Rect.Y,
 670                      Obj.X+Obj.Rect.X+Obj.Rect.Width-1,
 671                      Obj.Y+Obj.Rect.Y+Obj.Rect.Height-1,
 672                      0, 255, 0);
 673         end;
 674       end;
 675     end;
 676   end;
 677 end;
 678
 679
 680 procedure g_Items_Pick (ID: DWORD);
 681 begin
 682   ggItems[ID].Live := false;
 683   ggItems[ID].RespawnTime := ITEM_RESPAWNTIME;
 684 end;
 685
 686
 687 procedure g_Items_Remove (ID: DWORD);
 688 var
 689   it: PItem;
 690   trig: Integer;
 691 begin
 692   if not g_Items_ValidId(ID) then raise Exception.Create('g_Items_Remove: invalid item id');
 693
 694   it := @ggItems[ID];
 695   if (it.arrIdx <> Integer(ID)) then raise Exception.Create('g_Items_Remove: arrIdx desync');
 696
 697   trig := it.SpawnTrigger;
 698
 699   releaseItem(ID);
 700
 701   if (trig > -1) then g_Triggers_DecreaseSpawner(trig);
 702 end;
 703
 704
 705 procedure g_Items_SaveState (var Mem: TBinMemoryWriter);
 706 var
 707   count, i: Integer;
 708   sig: DWORD;
 709 begin
 710   // Ñ÷èòàåì êîëè÷åñòâî ñóùåñòâóþùèõ ïðåäìåòîâ
 711   count := 0;
 712   if (ggItems <> nil) then
 713   begin
 714     for i := 0 to High(ggItems) do if (ggItems[i].ItemType <> ITEM_NONE) then Inc(count);
 715   end;
 716
 717   Mem := TBinMemoryWriter.Create((count+1) * 60);
 718
 719   // Êîëè÷åñòâî ïðåäìåòîâ
 720   Mem.WriteInt(count);
 721
 722   if (count = 0) then exit;
 723
 724   for i := 0 to High(ggItems) do
 725   begin
 726     if (ggItems[i].ItemType <> ITEM_NONE) then
 727     begin
 728       // Ñèãíàòóðà ïðåäìåòà
 729       sig := ITEM_SIGNATURE; // 'ITEM'
 730       Mem.WriteDWORD(sig);
 731       // Òèï ïðåäìåòà
 732       Mem.WriteByte(ggItems[i].ItemType);
 733       // Åñòü ëè ðåñïàóí
 734       Mem.WriteBoolean(ggItems[i].Respawnable);
 735       // Êîîðäèíàòû ðåñïóíà
 736       Mem.WriteInt(ggItems[i].InitX);
 737       Mem.WriteInt(ggItems[i].InitY);
 738       // Âðåìÿ äî ðåñïàóíà
 739       Mem.WriteWord(ggItems[i].RespawnTime);
 740       // Ñóùåñòâóåò ëè ýòîò ïðåäìåò
 741       Mem.WriteBoolean(ggItems[i].Live);
 742       // Ìîæåò ëè îí ïàäàòü
 743       Mem.WriteBoolean(ggItems[i].Fall);
 744       // Èíäåêñ òðèããåðà, ñîçäàâøåãî ïðåäìåò
 745       Mem.WriteInt(ggItems[i].SpawnTrigger);
 746       // Îáúåêò ïðåäìåòà
 747       Obj_SaveState(@ggItems[i].Obj, Mem);
 748     end;
 749   end;
 750 end;
 751
 752
 753 procedure g_Items_LoadState (var Mem: TBinMemoryReader);
 754 var
 755   count, i, a: Integer;
 756   sig: DWORD;
 757   b: Byte;
 758 begin
 759   if (Mem = nil) then exit;
 760
 761   g_Items_Free();
 762
 763   // Êîëè÷åñòâî ïðåäìåòîâ
 764   Mem.ReadInt(count);
 765
 766   if (count = 0) then Exit;
 767
 768   for a := 0 to count-1 do
 769   begin
 770     // Ñèãíàòóðà ïðåäìåòà
 771     Mem.ReadDWORD(sig);
 772     if (sig <> ITEM_SIGNATURE) then raise EBinSizeError.Create('g_Items_LoadState: Wrong Item Signature'); // 'ITEM'
 773     // Òèï ïðåäìåòà
 774     Mem.ReadByte(b);
 775     // Ñîçäàåì ïðåäìåò
 776     i := g_Items_Create(0, 0, b, False, False);
 777     // Åñòü ëè ðåñïàóí
 778     Mem.ReadBoolean(ggItems[i].Respawnable);
 779     // Êîîðäèíàòû ðåñïóíà
 780     Mem.ReadInt(ggItems[i].InitX);
 781     Mem.ReadInt(ggItems[i].InitY);
 782     // Âðåìÿ äî ðåñïàóíà
 783     Mem.ReadWord(ggItems[i].RespawnTime);
 784     // Ñóùåñòâóåò ëè ýòîò ïðåäìåò
 785     Mem.ReadBoolean(ggItems[i].Live);
 786     // Ìîæåò ëè îí ïàäàòü
 787     Mem.ReadBoolean(ggItems[i].Fall);
 788     // Èíäåêñ òðèããåðà, ñîçäàâøåãî ïðåäìåò
 789     Mem.ReadInt(ggItems[i].SpawnTrigger);
 790     // Îáúåêò ïðåäìåòà
 791     Obj_LoadState(@ggItems[i].Obj, Mem);
 792   end;
 793 end;
 794
 795
 796 procedure g_Items_RestartRound ();
 797 var
 798   i: Integer;
 799   it: PItem;
 800 begin
 801   for i := 0 to High(ggItems) do
 802   begin
 803     it := @ggItems[i];
 804     if it.Respawnable then
 805     begin
 806       it.QuietRespawn := True;
 807       it.RespawnTime := 0;
 808     end
 809     else
 810     begin
 811       g_Items_Remove(i);
 812       if g_Game_IsNet then MH_SEND_ItemDestroy(True, i);
 813     end;
 814   end;
 815 end;
 816
 817
 818 function g_Items_ForEachAlive (cb: TItemEachAliveCB; backwards: Boolean=false): Boolean;
 819 var
 820   idx: Integer;
 821 begin
 822   result := false;
 823   if (ggItems = nil) or not assigned(cb) then exit;
 824
 825   if backwards then
 826   begin
 827     for idx := High(ggItems) downto 0 do
 828     begin
 829       if ggItems[idx].Live then
 830       begin
 831         result := cb(@ggItems[idx]);
 832         if result then exit;
 833       end;
 834     end;
 835   end
 836   else
 837   begin
 838     for idx := 0 to High(ggItems) do
 839     begin
 840       if ggItems[idx].Live then
 841       begin
 842         result := cb(@ggItems[idx]);
 843         if result then exit;
 844       end;
 845     end;
 846   end;
 847 end;
 848
 849
 850 // ////////////////////////////////////////////////////////////////////////// //
 851 procedure g_Items_EmitPickupSound (idx: Integer);
 852 var
 853   it: PItem;
 854 begin
 855   if not g_Items_ValidId(idx) then exit;
 856   it := @ggItems[idx];
 857   g_Items_EmitPickupSoundAt(idx, it.Obj.X, it.Obj.Y);
 858 end;
 859
 860 procedure g_Items_EmitPickupSoundAt (idx, x, y: Integer);
 861 var
 862   it: PItem;
 863 begin
 864   if not g_Items_ValidId(idx) then exit;
 865
 866   it := @ggItems[idx];
 867   if gSoundEffectsDF then
 868   begin
 869     if it.ItemType in [ITEM_SPHERE_BLUE, ITEM_SPHERE_WHITE, ITEM_INVUL,
 870                        ITEM_INVIS, ITEM_MEDKIT_BLACK, ITEM_JETPACK] then
 871     begin
 872       g_Sound_PlayExAt('SOUND_ITEM_GETRULEZ', x, y);
 873     end
 874     else if it.ItemType in [ITEM_WEAPON_SAW, ITEM_WEAPON_PISTOL, ITEM_WEAPON_SHOTGUN1, ITEM_WEAPON_SHOTGUN2,
 875                             ITEM_WEAPON_CHAINGUN, ITEM_WEAPON_ROCKETLAUNCHER, ITEM_WEAPON_PLASMA,
 876                             ITEM_WEAPON_BFG, ITEM_WEAPON_SUPERPULEMET, ITEM_WEAPON_FLAMETHROWER,
 877                             ITEM_AMMO_BACKPACK] then
 878     begin
 879       g_Sound_PlayExAt('SOUND_ITEM_GETWEAPON', x, y);
 880     end
 881     else
 882     begin
 883       g_Sound_PlayExAt('SOUND_ITEM_GETITEM', x, y);
 884     end;
 885   end
 886   else
 887   begin
 888     if it.ItemType in [ITEM_SPHERE_BLUE, ITEM_SPHERE_WHITE, ITEM_SUIT,
 889                        ITEM_MEDKIT_BLACK, ITEM_INVUL, ITEM_INVIS, ITEM_JETPACK] then
 890     begin
 891       g_Sound_PlayExAt('SOUND_ITEM_GETRULEZ', x, y);
 892     end
 893     else if it.ItemType in [ITEM_WEAPON_SAW, ITEM_WEAPON_PISTOL, ITEM_WEAPON_SHOTGUN1, ITEM_WEAPON_SHOTGUN2,
 894                             ITEM_WEAPON_CHAINGUN, ITEM_WEAPON_ROCKETLAUNCHER, ITEM_WEAPON_PLASMA,
 895                             ITEM_WEAPON_BFG, ITEM_WEAPON_SUPERPULEMET, ITEM_WEAPON_FLAMETHROWER] then
 896     begin
 897       g_Sound_PlayExAt('SOUND_ITEM_GETWEAPON', x, y);
 898     end
 899     else
 900     begin
 901       g_Sound_PlayExAt('SOUND_ITEM_GETITEM', x, y);
 902     end;
 903   end;
 904 end;
 905
 906 end.