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