src/game/g_panel.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, version 3 of the License ONLY.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14  *)
  15 {$INCLUDE ../shared/a_modes.inc}
  16 {$M+}
  17 unit g_panel;
  18
  19 interface
  20
  21 uses
  22   SysUtils, Classes,
  23   MAPDEF, g_textures, xdynrec;
  24
  25 type
  26   TAddTextureArray = array of record
  27     Texture: Cardinal; // Textures[Texture]
  28   end;
  29
  30   ATextureID = array of record
  31     Texture: Cardinal; // Textures[Texture]
  32     case Anim: Boolean of
  33       False: ();
  34       True:  (AnTex: TAnimationState);
  35   end;
  36
  37   PPanel = ^TPanel;
  38   TPanel = Class (TObject)
  39   private
  40     const
  41   private
  42     mGUID: Integer; // will be assigned in "g_map.pas"
  43     FAlpha:           Byte;
  44     FBlending:        Boolean;
  45     FTextureIDs:      ATextureID;
  46     mMovingSpeed: TDFPoint;
  47     mMovingStart: TDFPoint;
  48     mMovingEnd: TDFPoint;
  49     mMovingActive: Boolean;
  50     mMoveOnce: Boolean;
  51
  52     mOldMovingActive: Boolean;
  53
  54     mSizeSpeed: TDFSize;
  55     mSizeEnd: TDFSize;
  56
  57     mEndPosTrig: Integer;
  58     mEndSizeTrig: Integer;
  59
  60     mNeedSend: Boolean; // for network
  61
  62   private
  63     function getx1 (): Integer; inline;
  64     function gety1 (): Integer; inline;
  65     function getvisvalid (): Boolean; inline;
  66
  67     function getMovingSpeedX (): Integer; inline;
  68     procedure setMovingSpeedX (v: Integer); inline;
  69     function getMovingSpeedY (): Integer; inline;
  70     procedure setMovingSpeedY (v: Integer); inline;
  71
  72     function getMovingStartX (): Integer; inline;
  73     procedure setMovingStartX (v: Integer); inline;
  74     function getMovingStartY (): Integer; inline;
  75     procedure setMovingStartY (v: Integer); inline;
  76
  77     function getMovingEndX (): Integer; inline;
  78     procedure setMovingEndX (v: Integer); inline;
  79     function getMovingEndY (): Integer; inline;
  80     procedure setMovingEndY (v: Integer); inline;
  81
  82     function getSizeSpeedX (): Integer; inline;
  83     procedure setSizeSpeedX (v: Integer); inline;
  84     function getSizeSpeedY (): Integer; inline;
  85     procedure setSizeSpeedY (v: Integer); inline;
  86
  87     function getSizeEndX (): Integer; inline;
  88     procedure setSizeEndX (v: Integer); inline;
  89     function getSizeEndY (): Integer; inline;
  90     procedure setSizeEndY (v: Integer); inline;
  91
  92   public
  93     FCurTexture:      Integer; // Íîìåð òåêóùåé òåêñòóðû
  94     FCurFrame:        Integer;
  95     FCurFrameCount:   Byte;
  96     FX, FY:           Integer;
  97     FWidth, FHeight:  Word;
  98     FPanelType:       Word;
  99     FEnabled:         Boolean;
 100     FDoor:            Boolean;
 101     FLiftType:        Byte;
 102     FLastAnimLoop:    Byte;
 103     // sorry, there fields are public to allow setting 'em in g_map; this should be fixed later
 104     // for now, PLEASE, don't modify 'em, or all hell will break loose
 105     arrIdx:           Integer; // index in one of internal arrays; sorry
 106     tag:              Integer; // used in coldets and such; sorry; see g_map.GridTagXXX
 107     proxyId:          Integer; // proxy id in map grid (DO NOT USE!)
 108     mapId:            AnsiString; // taken directly from map file; dunno why it is here
 109     hasTexTrigger:    Boolean; // HACK: true when there's a trigger than can change my texture
 110
 111     constructor Create(PanelRec: TDynRecord;
 112                        AddTextures: TAddTextureArray;
 113                        CurTex: Integer;
 114                        var Textures: TLevelTextureArray; aguid: Integer);
 115     destructor  Destroy(); override;
 116
 117     procedure   Update();
 118     procedure   SetFrame(Frame: Integer; Count: Byte);
 119     procedure   NextTexture(AnimLoop: Byte = 0);
 120     procedure   SetTexture(ID: Integer; AnimLoop: Byte = 0);
 121     function    GetTextureID(): Cardinal;
 122     function    GetTextureCount(): Integer;
 123     function    CanChangeTexture(): Boolean;
 124
 125     procedure   SaveState (st: TStream);
 126     procedure   LoadState (st: TStream);
 127
 128     procedure positionChanged (); inline;
 129
 130     function getIsGBack (): Boolean; inline; // gRenderBackgrounds
 131     function getIsGStep (): Boolean; inline; // gSteps
 132     function getIsGWall (): Boolean; inline; // gWalls
 133     function getIsGAcid1 (): Boolean; inline; // gAcid1
 134     function getIsGAcid2 (): Boolean; inline; // gAcid2
 135     function getIsGWater (): Boolean; inline; // gWater
 136     function getIsGFore (): Boolean; inline; // gRenderForegrounds
 137     function getIsGLift (): Boolean; inline; // gLifts
 138     function getIsGBlockMon (): Boolean; inline; // gBlockMon
 139
 140     // get-and-clear
 141     function gncNeedSend (): Boolean; inline;
 142     procedure setDirty (); inline; // why `dirty`? 'cause i may introduce property `needSend` later
 143
 144   public
 145     property visvalid: Boolean read getvisvalid; // panel is "visvalid" when it's width and height are positive
 146
 147   published
 148     property guid: Integer read mGUID; // will be assigned in "g_map.pas"
 149     property x0: Integer read FX;
 150     property y0: Integer read FY;
 151     property x1: Integer read getx1; // inclusive!
 152     property y1: Integer read gety1; // inclusive!
 153     property x: Integer read FX write FX;
 154     property y: Integer read FY write FY;
 155     property width: Word read FWidth write FWidth;
 156     property height: Word read FHeight write FHeight;
 157     property panelType: Word read FPanelType write FPanelType;
 158     property enabled: Boolean read FEnabled write FEnabled;
 159     property door: Boolean read FDoor write FDoor;
 160     property liftType: Byte read FLiftType write FLiftType;
 161     property lastAnimLoop: Byte read FLastAnimLoop write FLastAnimLoop;
 162
 163     property movingSpeedX: Integer read getMovingSpeedX write setMovingSpeedX;
 164     property movingSpeedY: Integer read getMovingSpeedY write setMovingSpeedY;
 165     property movingStartX: Integer read getMovingStartX write setMovingStartX;
 166     property movingStartY: Integer read getMovingStartY write setMovingStartY;
 167     property movingEndX: Integer read getMovingEndX write setMovingEndX;
 168     property movingEndY: Integer read getMovingEndY write setMovingEndY;
 169     property movingActive: Boolean read mMovingActive write mMovingActive;
 170     property moveOnce: Boolean read mMoveOnce write mMoveOnce;
 171
 172     property sizeSpeedX: Integer read getSizeSpeedX write setSizeSpeedX;
 173     property sizeSpeedY: Integer read getSizeSpeedY write setSizeSpeedY;
 174     property sizeEndX: Integer read getSizeEndX write setSizeEndX;
 175     property sizeEndY: Integer read getSizeEndY write setSizeEndY;
 176
 177     property isGBack: Boolean read getIsGBack;
 178     property isGStep: Boolean read getIsGStep;
 179     property isGWall: Boolean read getIsGWall;
 180     property isGAcid1: Boolean read getIsGAcid1;
 181     property isGAcid2: Boolean read getIsGAcid2;
 182     property isGWater: Boolean read getIsGWater;
 183     property isGFore: Boolean read getIsGFore;
 184     property isGLift: Boolean read getIsGLift;
 185     property isGBlockMon: Boolean read getIsGBlockMon;
 186
 187     (* private state *)
 188     property Alpha: Byte read FAlpha;
 189     property Blending: Boolean read FBlending;
 190     property TextureIDs: ATextureID read FTextureIDs;
 191
 192   public
 193     property movingSpeed: TDFPoint read mMovingSpeed write mMovingSpeed;
 194     property movingStart: TDFPoint read mMovingStart write mMovingStart;
 195     property movingEnd: TDFPoint read mMovingEnd write mMovingEnd;
 196
 197     property sizeSpeed: TDFSize read mSizeSpeed write mSizeSpeed;
 198     property sizeEnd: TDFSize read mSizeEnd write mSizeEnd;
 199
 200     property endPosTrigId: Integer read mEndPosTrig write mEndPosTrig;
 201     property endSizeTrigId: Integer read mEndSizeTrig write mEndSizeTrig;
 202   end;
 203
 204   TPanelArray = Array of TPanel;
 205
 206 const
 207   LIFTTYPE_UP = 0;
 208   LIFTTYPE_DOWN = 1;
 209   LIFTTYPE_LEFT = 2;
 210   LIFTTYPE_RIGHT = 3;
 211
 212 var
 213   g_dbgpan_mplat_active: Boolean = {$IF DEFINED(D2F_DEBUG)}true{$ELSE}true{$ENDIF};
 214   g_dbgpan_mplat_step: Boolean = false; // one step, and stop
 215
 216
 217 implementation
 218
 219   uses
 220     {$IFDEF ENABLE_GFX}
 221       g_gfx,
 222     {$ENDIF}
 223     g_basic, g_map, g_game, g_weapons, g_triggers,
 224     g_console, g_language, g_monsters, g_player, g_grid, e_log, geom, utils, xstreams
 225   ;
 226
 227 const
 228   PANEL_SIGNATURE = $4C4E4150; // 'PANL'
 229
 230 { T P a n e l : }
 231
 232   function FindTextureByName (const name: String): Integer;
 233     var i: Integer;
 234   begin
 235     Result := -1;
 236     if Textures <> nil then
 237     begin
 238       for i := 0 to High(Textures) do
 239       begin
 240         if Textures[i].TextureName = name then
 241         begin
 242           Result := i;
 243           break;
 244         end
 245       end
 246     end
 247   end;
 248
 249 constructor TPanel.Create(PanelRec: TDynRecord;
 250                           AddTextures: TAddTextureArray;
 251                           CurTex: Integer;
 252                           var Textures: TLevelTextureArray; aguid: Integer);
 253 var
 254   i: Integer;
 255   tnum: Integer;
 256 begin
 257   X := PanelRec.X;
 258   Y := PanelRec.Y;
 259   Width := PanelRec.Width;
 260   Height := PanelRec.Height;
 261   FAlpha := 0;
 262   FBlending := False;
 263   FCurFrame := 0;
 264   FCurFrameCount := 0;
 265   LastAnimLoop := 0;
 266
 267   mapId := PanelRec.id;
 268   mGUID := aguid;
 269
 270   mMovingSpeed := PanelRec.moveSpeed;
 271   mMovingStart := PanelRec.moveStart;
 272   mMovingEnd := PanelRec.moveEnd;
 273   mMovingActive := PanelRec['move_active'].value;
 274   mOldMovingActive := mMovingActive;
 275   mMoveOnce := PanelRec.moveOnce;
 276
 277   mSizeSpeed := PanelRec.sizeSpeed;
 278   mSizeEnd := PanelRec.sizeEnd;
 279
 280   mEndPosTrig := PanelRec.endPosTrig;
 281   mEndSizeTrig := PanelRec.endSizeTrig;
 282
 283   mNeedSend := false;
 284
 285 // Òèï ïàíåëè:
 286   PanelType := PanelRec.PanelType;
 287   Enabled := True;
 288   Door := False;
 289   LiftType := LIFTTYPE_UP;
 290   hasTexTrigger := False;
 291
 292   case PanelType of
 293     PANEL_OPENDOOR: begin Enabled := False; Door := True; end;
 294     PANEL_CLOSEDOOR: Door := True;
 295     PANEL_LIFTUP: LiftType := LIFTTYPE_UP; //???
 296     PANEL_LIFTDOWN: LiftType := LIFTTYPE_DOWN;
 297     PANEL_LIFTLEFT: LiftType := LIFTTYPE_LEFT;
 298     PANEL_LIFTRIGHT: LiftType := LIFTTYPE_RIGHT;
 299   end;
 300
 301 // Íåâèäèìàÿ:
 302   if ByteBool(PanelRec.Flags and PANEL_FLAG_HIDE) then
 303   begin
 304     SetLength(FTextureIDs, 0);
 305     FCurTexture := -1;
 306     Exit;
 307   end;
 308 // Ïàíåëè, íå èñïîëüçóþùèå òåêñòóðû:
 309   if ByteBool(PanelType and
 310     (PANEL_LIFTUP or
 311      PANEL_LIFTDOWN or
 312      PANEL_LIFTLEFT or
 313      PANEL_LIFTRIGHT or
 314      PANEL_BLOCKMON)) then
 315   begin
 316     SetLength(FTextureIDs, 0);
 317     FCurTexture := -1;
 318     Exit;
 319   end;
 320
 321 // Åñëè ýòî æèäêîñòü áåç òåêñòóðû - ñïåöòåêñòóðó:
 322   if WordBool(PanelType and (PANEL_WATER or PANEL_ACID1 or PANEL_ACID2)) and
 323      (not ByteBool(PanelRec.Flags and PANEL_FLAG_WATERTEXTURES)) then
 324   begin
 325     SetLength(FTextureIDs, 1);
 326     FTextureIDs[0].Anim := False;
 327     case PanelRec.PanelType of
 328       PANEL_WATER: FTextureIDs[0].Texture := FindTextureByName(TEXTURE_NAME_WATER);
 329       PANEL_ACID1: FTextureIDs[0].Texture := FindTextureByName(TEXTURE_NAME_ACID1);
 330       PANEL_ACID2: FTextureIDs[0].Texture := FindTextureByName(TEXTURE_NAME_ACID2);
 331     end;
 332     FCurTexture := 0;
 333     Exit;
 334   end;
 335
 336   SetLength(FTextureIDs, Length(AddTextures));
 337
 338   if CurTex < 0 then
 339     FCurTexture := -1
 340   else
 341     if CurTex >= Length(FTextureIDs) then
 342       FCurTexture := Length(FTextureIDs) - 1
 343     else
 344       FCurTexture := CurTex;
 345
 346   for i := 0 to Length(FTextureIDs)-1 do
 347   begin
 348     FTextureIDs[i].Texture := AddTextures[i].Texture;
 349     FTextureIDs[i].Anim := Textures[AddTextures[i].Texture].FramesCount > 0;
 350     if FTextureIDs[i].Anim then
 351     begin // Àíèìèðîâàííàÿ òåêñòóðà
 352       FTextureIDs[i].AnTex := TAnimationState.Create(True, Textures[AddTextures[i].Texture].Speed, Textures[AddTextures[i].Texture].FramesCount);
 353     end
 354   end;
 355
 356 // Òåêñòóð íåñêîëüêî - íóæíî ñîõðàíÿòü òåêóùóþ:
 357   //if Length(FTextureIDs) > 1 then SaveIt := True;
 358
 359   if (PanelRec.TextureRec = nil) then tnum := -1 else tnum := PanelRec.tagInt;
 360   if (tnum < 0) then tnum := Length(Textures);
 361
 362 // Åñëè íå ñïåöòåêñòóðà, òî çàäàåì ðàçìåðû:
 363   if ({PanelRec.TextureNum}tnum > High(Textures)) then
 364   begin
 365     e_WriteLog(Format('WTF?! tnum is out of limits! (%d : %d)', [tnum, High(Textures)]), TMsgType.Warning);
 366     FAlpha := 0;
 367     FBlending := ByteBool(0);
 368   end
 369   else if not g_Map_IsSpecialTexture(Textures[{PanelRec.TextureNum}tnum].TextureName) then
 370   begin
 371     FAlpha := PanelRec.Alpha;
 372     FBlending := ByteBool(PanelRec.Flags and PANEL_FLAG_BLENDING);
 373   end;
 374 end;
 375
 376 destructor TPanel.Destroy();
 377 var
 378   i: Integer;
 379 begin
 380   for i := 0 to High(FTextureIDs) do
 381     if FTextureIDs[i].Anim then
 382       FTextureIDs[i].AnTex.Free();
 383   SetLength(FTextureIDs, 0);
 384
 385   Inherited;
 386 end;
 387
 388 function TPanel.getx1 (): Integer; inline; begin result := X+Width-1; end;
 389 function TPanel.gety1 (): Integer; inline; begin result := Y+Height-1; end;
 390 function TPanel.getvisvalid (): Boolean; inline; begin result := (Width > 0) and (Height > 0); end;
 391
 392 function TPanel.getMovingSpeedX (): Integer; inline; begin result := mMovingSpeed.X; end;
 393 procedure TPanel.setMovingSpeedX (v: Integer); inline; begin mMovingSpeed.X := v; end;
 394 function TPanel.getMovingSpeedY (): Integer; inline; begin result := mMovingSpeed.Y; end;
 395 procedure TPanel.setMovingSpeedY (v: Integer); inline; begin mMovingSpeed.Y := v; end;
 396
 397 function TPanel.getMovingStartX (): Integer; inline; begin result := mMovingStart.X; end;
 398 procedure TPanel.setMovingStartX (v: Integer); inline; begin mMovingStart.X := v; end;
 399 function TPanel.getMovingStartY (): Integer; inline; begin result := mMovingStart.Y; end;
 400 procedure TPanel.setMovingStartY (v: Integer); inline; begin mMovingStart.Y := v; end;
 401
 402 function TPanel.getMovingEndX (): Integer; inline; begin result := mMovingEnd.X; end;
 403 procedure TPanel.setMovingEndX (v: Integer); inline; begin mMovingEnd.X := v; end;
 404 function TPanel.getMovingEndY (): Integer; inline; begin result := mMovingEnd.Y; end;
 405 procedure TPanel.setMovingEndY (v: Integer); inline; begin mMovingEnd.Y := v; end;
 406
 407 function TPanel.getSizeSpeedX (): Integer; inline; begin result := mSizeSpeed.w; end;
 408 procedure TPanel.setSizeSpeedX (v: Integer); inline; begin mSizeSpeed.w := v; end;
 409 function TPanel.getSizeSpeedY (): Integer; inline; begin result := mSizeSpeed.h; end;
 410 procedure TPanel.setSizeSpeedY (v: Integer); inline; begin mSizeSpeed.h := v; end;
 411
 412 function TPanel.getSizeEndX (): Integer; inline; begin result := mSizeEnd.w; end;
 413 procedure TPanel.setSizeEndX (v: Integer); inline; begin mSizeEnd.w := v; end;
 414 function TPanel.getSizeEndY (): Integer; inline; begin result := mSizeEnd.h; end;
 415 procedure TPanel.setSizeEndY (v: Integer); inline; begin mSizeEnd.h := v; end;
 416
 417 function TPanel.getIsGBack (): Boolean; inline; begin result := ((tag and GridTagBack) <> 0); end;
 418 function TPanel.getIsGStep (): Boolean; inline; begin result := ((tag and GridTagStep) <> 0); end;
 419 function TPanel.getIsGWall (): Boolean; inline; begin result := ((tag and (GridTagWall or GridTagDoor)) <> 0); end;
 420 function TPanel.getIsGAcid1 (): Boolean; inline; begin result := ((tag and GridTagAcid1) <> 0); end;
 421 function TPanel.getIsGAcid2 (): Boolean; inline; begin result := ((tag and GridTagAcid2) <> 0); end;
 422 function TPanel.getIsGWater (): Boolean; inline; begin result := ((tag and GridTagWater) <> 0); end;
 423 function TPanel.getIsGFore (): Boolean; inline; begin result := ((tag and GridTagFore) <> 0); end;
 424 function TPanel.getIsGLift (): Boolean; inline; begin result := ((tag and GridTagLift) <> 0); end;
 425 function TPanel.getIsGBlockMon (): Boolean; inline; begin result := ((tag and GridTagBlockMon) <> 0); end;
 426
 427 function TPanel.gncNeedSend (): Boolean; inline; begin result := mNeedSend; mNeedSend := false; end;
 428 procedure TPanel.setDirty (); inline; begin mNeedSend := true; end;
 429
 430 procedure TPanel.positionChanged (); inline;
 431 var
 432   px, py, pw, ph: Integer;
 433 begin
 434   if (proxyId >= 0) then
 435   begin
 436     mapGrid.getBodyDims(proxyId, px, py, pw, ph);
 437     if (px <> x) or (py <> y) or (pw <> Width) or (ph <> Height) then
 438     begin
 439       {
 440       e_LogWritefln('panel moved: arridx=%s; guid=%s; proxyid=%s; old:(%s,%s)-(%sx%s); new:(%s,%s)-(%sx%s)',
 441         [arrIdx, mGUID, proxyId, px, py, pw, ph, x, y, width, height]);
 442       }
 443       {$IFDEF ENABLE_GFX}
 444         g_Mark(px, py, pw, ph, MARK_WALL, false);
 445       {$ENDIF}
 446       if (Width < 1) or (Height < 1) then
 447       begin
 448         mapGrid.proxyEnabled[proxyId] := false;
 449       end
 450       else
 451       begin
 452         mapGrid.proxyEnabled[proxyId] := Enabled;
 453         if (pw <> Width) or (ph <> Height) then
 454         begin
 455           //writeln('panel resize!');
 456           mapGrid.moveResizeBody(proxyId, X, Y, Width, Height)
 457         end
 458         else
 459         begin
 460           mapGrid.moveBody(proxyId, X, Y);
 461         end;
 462         {$IFDEF ENABLE_GFX}
 463           g_Mark(X, Y, Width, Height, MARK_WALL);
 464         {$ENDIF}
 465       end;
 466     end;
 467   end;
 468 end;
 469
 470
 471 var
 472   monCheckList: array of TMonster = nil;
 473   monCheckListUsed: Integer = 0;
 474
 475 procedure TPanel.Update();
 476 var
 477   ox, oy: Integer;
 478   nx, ny, nw, nh: Integer;
 479   ex, ey, nex, ney: Integer;
 480   mpw, mph: Integer;
 481
 482   // return `true` if we should move by dx,dy
 483   function tryMPlatMove (px, py, pw, ph: Integer; out dx, dy: Integer; out squash: Boolean; ontop: PBoolean=nil): Boolean;
 484   var
 485     u0: Single;
 486     tex, tey: Integer;
 487     pdx, pdy: Integer;
 488     trtag: Integer;
 489     szdx, szdy: Integer;
 490   begin
 491     squash := false;
 492     tex := px;
 493     tey := py;
 494     pdx := mMovingSpeed.X;
 495     pdy := mMovingSpeed.Y;
 496     // standing on the platform?
 497     if (py+ph = oy) then
 498     begin
 499       if (ontop <> nil) then ontop^ := true;
 500       // yes, move with it; but skip steps (no need to process size change here, 'cause platform top cannot be changed with it)
 501       mapGrid.traceBox(tex, tey, px, py, pw, ph, pdx, pdy, (GridTagWall or GridTagDoor));
 502     end
 503     else
 504     begin
 505       if (ontop <> nil) then ontop^ := false;
 506       // not standing on the platform: trace platform to see if it hits the entity
 507       // first, process size change (as we cannot sweeptest both move and size change)
 508       // but we don't have to check for pushing if the panel is shrinking
 509       szdx := nw-mpw;
 510       szdy := nh-mph;
 511       if (szdx > 0) or (szdy > 0) then
 512       begin
 513         // ignore shrinking dimension
 514         if (szdx < 0) then szdx := 0;
 515         if (szdy < 0) then szdy := 0;
 516         // move platform by szd* back, and check for szd* movement
 517         if sweepAABB(ox-szdx, oy-szdy, nw, nh, szdx, szdy, px, py, pw, ph, @u0) then
 518         begin
 519           // yes, platform hits the entity, push the entity in the resizing direction
 520           u0 := 1.0-u0; // how much path left?
 521           szdx := trunc(szdx*u0);
 522           szdy := trunc(szdy*u0);
 523           if (szdx <> 0) or (szdy <> 0) then
 524           begin
 525             // has some path to go, trace the entity
 526             trtag := (GridTagWall or GridTagDoor);
 527             // if we're moving down, consider steps too
 528             if (szdy > 0) then trtag := trtag or GridTagStep;
 529             mapGrid.traceBox(tex, tey, px, py, pw, ph, szdx, szdy, trtag);
 530           end;
 531         end;
 532       end;
 533       // second, process platform movement, using te* as entity starting point
 534       if sweepAABB(ox, oy, nw, nh, pdx, pdy, tex, tey, pw, ph, @u0) then
 535       begin
 536         //e_LogWritefln('T: platsweep; u0=%s; u1=%s; hedge=%s; sweepAABB(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)', [u0, u1, hedge, ox, oy, mpw, mph, pdx, pdy, px-1, py-1, pw+2, ph+2]);
 537         // yes, platform hits the entity, push the entity in the direction of the platform
 538         u0 := 1.0-u0; // how much path left?
 539         pdx := trunc(pdx*u0);
 540         pdy := trunc(pdy*u0);
 541         //e_LogWritefln(' platsweep; uleft=%s; pd=(%s,%s)', [u0, pdx, pdy]);
 542         if (pdx <> 0) or (pdy <> 0) then
 543         begin
 544           // has some path to go, trace the entity
 545           trtag := (GridTagWall or GridTagDoor);
 546           // if we're moving down, consider steps too
 547           if (pdy > 0) then trtag := trtag or GridTagStep;
 548           mapGrid.traceBox(tex, tey, px, py, pw, ph, pdx, pdy, trtag);
 549         end;
 550       end;
 551     end;
 552     // done with entity movement, new coords are in te*
 553     dx := tex-px;
 554     dy := tey-py;
 555     result := (dx <> 0) or (dy <> 0);
 556     if ((tag and (GridTagWall or GridTagDoor)) <> 0) then
 557     begin
 558       // check for squashing; as entity cannot be pushed into a wall, check only collision with the platform itself
 559       squash := g_Collide(tex, tey, pw, ph, nx, ny, nw, nh); // squash, if still in platform
 560     end;
 561   end;
 562
 563   function monCollect (mon: TMonster): Boolean;
 564   begin
 565     result := false; // don't stop
 566     if (monCheckListUsed >= Length(monCheckList)) then SetLength(monCheckList, monCheckListUsed+128);
 567     monCheckList[monCheckListUsed] := mon;
 568     Inc(monCheckListUsed);
 569   end;
 570
 571 var
 572   cx0, cy0, cx1, cy1, cw, ch: Integer;
 573   f: Integer;
 574   px, py, pw, ph, pdx, pdy: Integer;
 575   squash: Boolean;
 576   plr: TPlayer;
 577   gib: PGib;
 578   cor: TCorpse;
 579   mon: TMonster;
 580   mpfrid: LongWord;
 581   ontop: Boolean;
 582   actMoveTrig: Boolean;
 583   actSizeTrig: Boolean;
 584 begin
 585   if (not Enabled) or (Width < 1) or (Height < 1) then exit;
 586
 587   if (FCurTexture >= 0) and
 588     (FTextureIDs[FCurTexture].Anim) and
 589     (FTextureIDs[FCurTexture].AnTex <> nil) and
 590     (FAlpha < 255) then
 591   begin
 592     FTextureIDs[FCurTexture].AnTex.Update();
 593     FCurFrame := FTextureIDs[FCurTexture].AnTex.CurrentFrame;
 594     FCurFrameCount := FTextureIDs[FCurTexture].AnTex.CurrentCounter;
 595   end;
 596
 597   if not g_dbgpan_mplat_active then exit;
 598
 599   if (mOldMovingActive <> mMovingActive) then mNeedSend := true;
 600   mOldMovingActive := mMovingActive;
 601
 602   if not mMovingActive then exit;
 603   if mMovingSpeed.isZero and mSizeSpeed.isZero then exit;
 604
 605   //TODO: write wall size change processing
 606
 607   // moving platform?
 608   begin
 609     (*
 610      * collect all monsters and players (aka entities) along the possible platform path
 611      *   if entity is standing on a platform:
 612      *     try to move it along the platform path, checking wall collisions
 613      *   if entity is NOT standing on a platform, but hit with sweeped platform aabb:
 614      *     try to push entity
 615      *     if we can't push entity all the way, squash it
 616      *)
 617     ox := X;
 618     oy := Y;
 619     mpw := Width;
 620     mph := Height;
 621
 622     nw := mpw+mSizeSpeed.w;
 623     nh := mph+mSizeSpeed.h;
 624     nx := ox+mMovingSpeed.X;
 625     ny := oy+mMovingSpeed.Y;
 626
 627     // force network updates only if some sudden change happened
 628     // set the flag here, so we can sync affected monsters
 629     if not mSizeSpeed.isZero and (nw = mSizeEnd.w) and (nh = mSizeEnd.h) then
 630     begin
 631       mNeedSend := true;
 632     end
 633     else if ((mMovingSpeed.X < 0) and (nx <= mMovingStart.X)) or ((mMovingSpeed.X > 0) and (nx >= mMovingEnd.X)) then
 634     begin
 635       mNeedSend := true;
 636     end
 637     else if ((mMovingSpeed.Y < 0) and (ny <= mMovingStart.Y)) or ((mMovingSpeed.Y > 0) and (ny >= mMovingEnd.Y)) then
 638     begin
 639       mNeedSend := true;
 640     end;
 641
 642     // if pannel disappeared, we don't have to do anything
 643     if (nw > 0) and (nh > 0) then
 644     begin
 645       // old rect
 646       ex := ox+mpw-1;
 647       ey := ox+mph-1;
 648       // new rect
 649       nex := nx+nw-1;
 650       ney := ny+nh-1;
 651       // full rect
 652       cx0 := nmin(ox, nx);
 653       cy0 := nmin(oy, ny);
 654       cx1 := nmax(ex, nex);
 655       cy1 := nmax(ey, ney);
 656       // extrude
 657       cx0 -= 1;
 658       cy0 -= 1;
 659       cx1 += 1;
 660       cy1 += 1;
 661       cw := cx1-cx0+1;
 662       ch := cy1-cy0+1;
 663
 664       // process "obstacle" panels
 665       if ((tag and GridTagObstacle) <> 0) then
 666       begin
 667         // temporarily turn off this panel, so it won't interfere with collision checks
 668         mapGrid.proxyEnabled[proxyId] := false;
 669
 670         // process players
 671         for f := 0 to High(gPlayers) do
 672         begin
 673           plr := gPlayers[f];
 674           if (plr = nil) or (not plr.alive) then continue;
 675           plr.getMapBox(px, py, pw, ph);
 676           if not g_Collide(px, py, pw, ph, cx0, cy0, cw, ch) then continue;
 677           if tryMPlatMove(px, py, pw, ph, pdx, pdy, squash) then
 678           begin
 679             // set new position
 680             plr.moveBy(pdx, pdy); // this will call `positionChanged()` for us
 681           end;
 682           // squash player, if necessary
 683           if not g_Game_IsClient and squash then plr.Damage(15000, 0, 0, 0, HIT_TRAP);
 684         end;
 685
 686         // process gibs
 687         for f := 0 to High(gGibs) do
 688         begin
 689           gib := @gGibs[f];
 690           if not gib.alive then continue;
 691           gib.getMapBox(px, py, pw, ph);
 692           if not g_Collide(px, py, pw, ph, cx0, cy0, cw, ch) then continue;
 693           if tryMPlatMove(px, py, pw, ph, pdx, pdy, squash, @ontop) then
 694           begin
 695             // set new position
 696             gib.moveBy(pdx, pdy); // this will call `positionChanged()` for us
 697           end;
 698         end;
 699
 700         // move and push corpses
 701         for f := 0 to High(gCorpses) do
 702         begin
 703           cor := gCorpses[f];
 704           if (cor = nil) then continue;
 705           cor.getMapBox(px, py, pw, ph);
 706           if not g_Collide(px, py, pw, ph, cx0, cy0, cw, ch) then continue;
 707           if tryMPlatMove(px, py, pw, ph, pdx, pdy, squash, @ontop) then
 708           begin
 709             // set new position
 710             cor.moveBy(pdx, pdy); // this will call `positionChanged()` for us
 711           end;
 712         end;
 713
 714         // collect monsters
 715         monCheckListUsed := 0;
 716         g_Mons_ForEachAt(cx0, cy0, cw, ch, monCollect);
 717
 718         // process collected monsters
 719         if (monCheckListUsed > 0) then
 720         begin
 721           mpfrid := g_Mons_getNewMPlatFrameId();
 722           for f := 0 to monCheckListUsed do
 723           begin
 724             mon := monCheckList[f];
 725             if (mon = nil) or (not mon.alive) or (mon.mplatCheckFrameId = mpfrid) then continue;
 726             mon.mplatCheckFrameId := mpfrid;
 727             mon.getMapBox(px, py, pw, ph);
 728             //if not g_Collide(px, py, pw, ph, cx0, cy0, cw, ch) then continue;
 729             if tryMPlatMove(px, py, pw, ph, pdx, pdy, squash) then
 730             begin
 731               // set new position
 732               mon.moveBy(pdx, pdy); // this will call `positionChanged()` for us
 733               //???FIXME: do we really need to send monsters over the net?
 734               //          i don't think so, as dead reckoning should take care of 'em
 735               // ok, send new monster position only if platform is going to change it's direction
 736               if mNeedSend then mon.setDirty();
 737             end;
 738             // squash monster, if necessary
 739             if not g_Game_IsClient and squash then mon.Damage(15000, 0, 0, 0, HIT_TRAP);
 740           end;
 741         end;
 742
 743         // restore panel state
 744         mapGrid.proxyEnabled[proxyId] := true;
 745       end;
 746     end;
 747
 748     // move panel
 749     X := nx;
 750     Y := ny;
 751     FWidth := nw;
 752     FHeight := nh;
 753     positionChanged();
 754
 755     actMoveTrig := false;
 756     actSizeTrig := false;
 757
 758     // `mNeedSend` was set above
 759
 760     // check "size stop"
 761     if not mSizeSpeed.isZero and (nw = mSizeEnd.w) and (nh = mSizeEnd.h) then
 762     begin
 763       mSizeSpeed.w := 0;
 764       mSizeSpeed.h := 0;
 765       actSizeTrig := true;
 766       if (nw < 1) or (nh < 1) then mMovingActive := false; //HACK!
 767     end;
 768
 769     // reverse moving direction, if necessary
 770     if ((mMovingSpeed.X < 0) and (nx <= mMovingStart.X)) or ((mMovingSpeed.X > 0) and (nx >= mMovingEnd.X)) then
 771     begin
 772       if mMoveOnce then mMovingActive := false else mMovingSpeed.X := -mMovingSpeed.X;
 773       actMoveTrig := true;
 774     end;
 775
 776     if ((mMovingSpeed.Y < 0) and (ny <= mMovingStart.Y)) or ((mMovingSpeed.Y > 0) and (ny >= mMovingEnd.Y)) then
 777     begin
 778       if mMoveOnce then mMovingActive := false else mMovingSpeed.Y := -mMovingSpeed.Y;
 779       actMoveTrig := true;
 780     end;
 781
 782     if (mOldMovingActive <> mMovingActive) then mNeedSend := true;
 783     mOldMovingActive := mMovingActive;
 784
 785     if not g_Game_IsClient then
 786     begin
 787       if actMoveTrig then g_Triggers_Press(mEndPosTrig, ACTIVATE_CUSTOM);
 788       if actSizeTrig then g_Triggers_Press(mEndSizeTrig, ACTIVATE_CUSTOM);
 789     end;
 790
 791     // some triggers may activate this, don't delay sending
 792     //TODO: when triggers will be able to control speed and size, check that here too
 793     if (mOldMovingActive <> mMovingActive) then mNeedSend := true;
 794     mOldMovingActive := mMovingActive;
 795   end;
 796 end;
 797
 798
 799 procedure TPanel.SetFrame(Frame: Integer; Count: Byte);
 800
 801   function ClampInt(X, A, B: Integer): Integer;
 802   begin
 803     Result := X;
 804     if X < A then Result := A else if X > B then Result := B;
 805   end;
 806
 807 begin
 808   if Enabled and (FCurTexture >= 0) and
 809     (FTextureIDs[FCurTexture].Anim) and
 810     (FTextureIDs[FCurTexture].AnTex <> nil) and
 811     (Width > 0) and (Height > 0) and (FAlpha < 255) then
 812   begin
 813     FCurFrame := ClampInt(Frame, 0, FTextureIDs[FCurTexture].AnTex.TotalFrames - 1);
 814     FCurFrameCount := Count;
 815     FTextureIDs[FCurTexture].AnTex.CurrentFrame := FCurFrame;
 816     FTextureIDs[FCurTexture].AnTex.CurrentCounter := FCurFrameCount;
 817   end;
 818 end;
 819
 820 procedure TPanel.NextTexture(AnimLoop: Byte = 0);
 821 begin
 822   Assert(FCurTexture >= -1, 'FCurTexture < -1');
 823
 824 // Íåò òåêñòóð:
 825   if Length(FTextureIDs) = 0 then
 826     FCurTexture := -1
 827   else
 828   // Òîëüêî îäíà òåêñòóðà:
 829     if Length(FTextureIDs) = 1 then
 830       begin
 831         if FCurTexture = 0 then
 832           FCurTexture := -1
 833         else
 834           FCurTexture := 0;
 835       end
 836     else
 837     // Áîëüøå îäíîé òåêñòóðû:
 838       begin
 839       // Ñëåäóþùàÿ:
 840         Inc(FCurTexture);
 841       // Ñëåäóþùåé íåò - âîçâðàò ê íà÷àëó:
 842         if FCurTexture >= Length(FTextureIDs) then
 843           FCurTexture := 0;
 844       end;
 845
 846 // Ïåðåêëþ÷èëèñü íà âèäèìóþ àíèì. òåêñòóðó:
 847   if (FCurTexture >= 0) and FTextureIDs[FCurTexture].Anim then
 848   begin
 849     if (FTextureIDs[FCurTexture].AnTex = nil) then
 850     begin
 851       g_FatalError(_lc[I_GAME_ERROR_SWITCH_TEXTURE]);
 852       Exit;
 853     end;
 854
 855     if AnimLoop = 1 then
 856       FTextureIDs[FCurTexture].AnTex.Loop := True
 857     else
 858       if AnimLoop = 2 then
 859         FTextureIDs[FCurTexture].AnTex.Loop := False;
 860
 861     FTextureIDs[FCurTexture].AnTex.Reset();
 862   end;
 863
 864   LastAnimLoop := AnimLoop;
 865 end;
 866
 867 procedure TPanel.SetTexture(ID: Integer; AnimLoop: Byte = 0);
 868 begin
 869   if (ID >= -1) and (ID < Length(FTextureIDs)) then
 870     FCurTexture := ID;
 871
 872 // Ïåðåêëþ÷èëèñü íà âèäèìóþ àíèì. òåêñòóðó:
 873   if (FCurTexture >= 0) and FTextureIDs[FCurTexture].Anim then
 874   begin
 875     if (FTextureIDs[FCurTexture].AnTex = nil) then
 876     begin
 877       g_FatalError(_lc[I_GAME_ERROR_SWITCH_TEXTURE]);
 878       Exit;
 879     end;
 880
 881     if AnimLoop = 1 then
 882       FTextureIDs[FCurTexture].AnTex.Loop := True
 883     else
 884       if AnimLoop = 2 then
 885         FTextureIDs[FCurTexture].AnTex.Loop := False;
 886
 887     FTextureIDs[FCurTexture].AnTex.Reset();
 888   end;
 889
 890   LastAnimLoop := AnimLoop;
 891 end;
 892
 893   function TPanel.GetTextureID(): DWORD;
 894     var Texture: Integer;
 895   begin
 896     Result := LongWord(TEXTURE_NONE);
 897     if (FCurTexture >= 0) then
 898     begin
 899       Texture := FTextureIDs[FCurTexture].Texture;
 900       case Textures[Texture].TextureName of
 901         TEXTURE_NAME_WATER: Result := DWORD(TEXTURE_SPECIAL_WATER);
 902         TEXTURE_NAME_ACID1: Result := DWORD(TEXTURE_SPECIAL_ACID1);
 903         TEXTURE_NAME_ACID2: Result := DWORD(TEXTURE_SPECIAL_ACID2);
 904       end
 905     end
 906   end;
 907
 908 function TPanel.GetTextureCount(): Integer;
 909 begin
 910   Result := Length(FTextureIDs);
 911   if Enabled and (FCurTexture >= 0) then
 912      if (FTextureIDs[FCurTexture].Anim) and
 913         (FTextureIDs[FCurTexture].AnTex <> nil) and
 914         (Width > 0) and (Height > 0) and (FAlpha < 255) then
 915        Result := Result + 100;
 916 end;
 917
 918 function TPanel.CanChangeTexture(): Boolean;
 919 begin
 920   Result := (GetTextureCount() > 1) or hasTexTrigger;
 921 end;
 922
 923 const
 924   PAN_SAVE_VERSION = 1;
 925
 926 procedure TPanel.SaveState (st: TStream);
 927 var
 928   anim: Boolean;
 929 begin
 930   if (st = nil) then exit;
 931
 932   // Ñèãíàòóðà ïàíåëè
 933   utils.writeSign(st, 'PANL');
 934   utils.writeInt(st, Byte(PAN_SAVE_VERSION));
 935   // Îòêðûòà/çàêðûòà, åñëè äâåðü
 936   utils.writeBool(st, FEnabled);
 937   // Íàïðàâëåíèå ëèôòà, åñëè ëèôò
 938   utils.writeInt(st, Byte(FLiftType));
 939   // Íîìåð òåêóùåé òåêñòóðû
 940   utils.writeInt(st, Integer(FCurTexture));
 941   // Êîîðäèíàòû è ðàçìåð
 942   utils.writeInt(st, Integer(FX));
 943   utils.writeInt(st, Integer(FY));
 944   utils.writeInt(st, Word(FWidth));
 945   utils.writeInt(st, Word(FHeight));
 946   // Àíèìèðîâàíà ëè òåêóùàÿ òåêñòóðà
 947   if (FCurTexture >= 0) and (FTextureIDs[FCurTexture].Anim) then
 948   begin
 949     assert(FTextureIDs[FCurTexture].AnTex <> nil, 'TPanel.SaveState: No animation object');
 950     anim := true;
 951   end
 952   else
 953   begin
 954     anim := false;
 955   end;
 956   utils.writeBool(st, anim);
 957   // Åñëè äà - ñîõðàíÿåì àíèìàöèþ
 958   if anim then FTextureIDs[FCurTexture].AnTex.SaveState(st, FAlpha, FBlending);
 959
 960   // moving platform state
 961   utils.writeInt(st, Integer(mMovingSpeed.X));
 962   utils.writeInt(st, Integer(mMovingSpeed.Y));
 963   utils.writeInt(st, Integer(mMovingStart.X));
 964   utils.writeInt(st, Integer(mMovingStart.Y));
 965   utils.writeInt(st, Integer(mMovingEnd.X));
 966   utils.writeInt(st, Integer(mMovingEnd.Y));
 967
 968   utils.writeInt(st, Integer(mSizeSpeed.w));
 969   utils.writeInt(st, Integer(mSizeSpeed.h));
 970   utils.writeInt(st, Integer(mSizeEnd.w));
 971   utils.writeInt(st, Integer(mSizeEnd.h));
 972
 973   utils.writeBool(st, mMovingActive);
 974   utils.writeBool(st, mMoveOnce);
 975
 976   utils.writeInt(st, Integer(mEndPosTrig));
 977   utils.writeInt(st, Integer(mEndSizeTrig));
 978 end;
 979
 980
 981 procedure TPanel.LoadState (st: TStream);
 982 begin
 983   if (st = nil) then exit;
 984
 985   // Ñèãíàòóðà ïàíåëè
 986   if not utils.checkSign(st, 'PANL') then raise XStreamError.create('wrong panel signature');
 987   if (utils.readByte(st) <> PAN_SAVE_VERSION) then raise XStreamError.create('wrong panel version');
 988   // Îòêðûòà/çàêðûòà, åñëè äâåðü
 989   FEnabled := utils.readBool(st);
 990   // Íàïðàâëåíèå ëèôòà, åñëè ëèôò
 991   FLiftType := utils.readByte(st);
 992   // Íîìåð òåêóùåé òåêñòóðû
 993   FCurTexture := utils.readLongInt(st);
 994   // Êîîðäèíàòû è ðàçìåð
 995   FX := utils.readLongInt(st);
 996   FY := utils.readLongInt(st);
 997   FWidth := utils.readWord(st);
 998   FHeight := utils.readWord(st);
 999   // Àíèìèðîâàííàÿ ëè òåêóùàÿ òåêñòóðà
1000   if utils.readBool(st) then
1001   begin
1002     // Åñëè äà - çàãðóæàåì àíèìàöèþ
1003     Assert((FCurTexture >= 0) and
1004            (FTextureIDs[FCurTexture].Anim) and
1005            (FTextureIDs[FCurTexture].AnTex <> nil),
1006            'TPanel.LoadState: No animation object');
1007     FTextureIDs[FCurTexture].AnTex.LoadState(st, FAlpha, FBlending);
1008   end;
1009
1010   // moving platform state
1011   mMovingSpeed.X := utils.readLongInt(st);
1012   mMovingSpeed.Y := utils.readLongInt(st);
1013   mMovingStart.X := utils.readLongInt(st);
1014   mMovingStart.Y := utils.readLongInt(st);
1015   mMovingEnd.X := utils.readLongInt(st);
1016   mMovingEnd.Y := utils.readLongInt(st);
1017
1018   mSizeSpeed.w := utils.readLongInt(st);
1019   mSizeSpeed.h := utils.readLongInt(st);
1020   mSizeEnd.w := utils.readLongInt(st);
1021   mSizeEnd.h := utils.readLongInt(st);
1022
1023   mMovingActive := utils.readBool(st);
1024   mMoveOnce := utils.readBool(st);
1025
1026   mEndPosTrig := utils.readLongInt(st);
1027   mEndSizeTrig := utils.readLongInt(st);
1028
1029   positionChanged();
1030   //mapGrid.proxyEnabled[proxyId] := FEnabled; // done in g_map.pas
1031 end;
1032
1033
1034 end.