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  1. unit Main;
  2.  
  3. interface
  4.  
  5. uses
  6.   Windows, SysUtils, Classes, Graphics, Dialogs, StdCtrls, Menus, Controls,
  7.   ComCtrls, ExtCtrls, Forms, MMSystem, LevelFunctions, Registry;
  8.  
  9. type
  10.   TField = record
  11.     FieldType: TFieldType;
  12.     Goal: Boolean;
  13.     Panel: TPanel;
  14.     Stone: TImage;
  15.   end;
  16.  
  17.   TGoalStatus = (gsNoGoal, gsMultipleStonesRemaining, gsLastStoneInGoalRed, gsLastStoneInGoalYellow, gsLastStoneInGoalGreen, gsLastStoneOutsideGoal);
  18.  
  19.   TFieldState = (fsError, fsLocked, fsAvailable, fsStone);
  20.  
  21.   TPlayGroundMatrix = array of array of TField;
  22.  
  23.   TMainForm = class(TForm)
  24.     Playground: TPanel;
  25.     MainMenu: TMainMenu;
  26.     Help1: TMenuItem;
  27.     MExit: TMenuItem;
  28.     Statistics: TStatusBar;
  29.     Timer: TTimer;
  30.     MNewGame: TMenuItem;
  31.     Help2: TMenuItem;
  32.     MAbout: TMenuItem;
  33.     MHelp: TMenuItem;
  34.     N5: TMenuItem;
  35.     MJumpHistory: TMenuItem;
  36.     N2: TMenuItem;
  37.     N4: TMenuItem;
  38.     MHighScores: TMenuItem;
  39.     MRestartGame: TMenuItem;
  40.     MSettings: TMenuItem;
  41.     MEnableSound: TMenuItem;
  42.     MPauseTime: TMenuItem;
  43.     N1: TMenuItem;
  44.     MUndo: TMenuItem;
  45.     N3: TMenuItem;
  46.     procedure MExitClick(Sender: TObject);
  47.     procedure TimerTimer(Sender: TObject);
  48.     procedure MNewGameClick(Sender: TObject);
  49.     procedure MAboutClick(Sender: TObject);
  50.     procedure FormShow(Sender: TObject);
  51.     procedure FormCreate(Sender: TObject);
  52.     procedure FormDestroy(Sender: TObject);
  53.     procedure MJumpHistoryClick(Sender: TObject);
  54.     procedure MRestartGameClick(Sender: TObject);
  55.     procedure MHighScoresClick(Sender: TObject);
  56.     procedure MPauseTimeClick(Sender: TObject);
  57.     procedure FormClose(Sender: TObject; var Action: TCloseAction);
  58.     procedure MHelpClick(Sender: TObject);
  59.     procedure MEnableSoundClick(Sender: TObject);
  60.     procedure MUndoClick(Sender: TObject);
  61.   private
  62.     CountedSeconds: Integer;
  63.     LevelFile: String;
  64.     LookupFieldCoordinateArray: array of TPoint;
  65.     OriginalPlayGroundMatrix: TPlayGroundMatrix;
  66.     PrevPlaygroundMatrixes: array of TPlayGroundMatrix;
  67.     PlaygroundMatrix: TPlayGroundMatrix;
  68.     Points: Integer;
  69.     LevelTotalStones: Integer;
  70.     LevelRemovedStones: Integer;
  71.     JumpHistory: TStringList;
  72.     procedure LoadSettings;
  73.     procedure SaveSettings;
  74.     procedure RestartLevel;
  75.     procedure SetNewPlayGroundMatrix(Matrix: TPlayGroundMatrix);
  76.     procedure RedrawStonesFromMatrix(Matrix: TPlayGroundMatrix);
  77.     function AskForLevel: String;
  78.     function AreJumpsPossible: boolean;
  79.     procedure StoneDraggingAllow(Stone: TImage; Allow: boolean);
  80.     procedure NewGame(Filename: string);
  81.     function LevelTime: String;
  82.     procedure DestroyLevel;
  83.     procedure RefreshTime;
  84.     procedure RefreshPoints;
  85.     procedure RefreshStonesRemoved;
  86.     procedure CountPoints(t: TFieldType);
  87.     procedure RemoveStone(x, y: integer; count_points: boolean);
  88.     procedure DoJump(SourceTag, DestTag: integer);
  89.     function CanJump(x, y: integer): boolean;
  90.     function MayJump(SourceX, SourceY, DestX, DestY: integer): boolean; overload;
  91.     function MayJump(SourceTag, DestTag: integer): boolean; overload;
  92.     procedure StoneDragOver(Sender, Source: TObject; X,
  93.       Y: Integer; State: TDragState; var Accept: Boolean);
  94.     procedure StoneDragDrop(Sender, Source: TObject; X, Y: Integer);
  95.     procedure DrawField(x, y: integer; t: TFieldProperties; halftabs: integer);
  96.     function DrawStone(fieldtype: TFieldType; panel: TPanel): TImage;
  97.     function DrawStoneBox(x, y, tag, halftabs: integer; isGoal: boolean): TPanel;
  98.     procedure BuildPlayground(LevelArray: TLevelArray);
  99.     function FieldState(t: TFieldType): TFieldState; overload;
  100.     function FieldState(f: TField): TFieldState; overload;
  101.     function FieldState(x, y: integer): TFieldState; overload;
  102.     procedure ClearMatrix(Matrix: TPlayGroundMatrix; FreeVCL: boolean);
  103.     function CloneMatrix(Source: TPlayGroundMatrix): TPlayGroundMatrix;
  104.     function MatrixHasGoal(Matrix: TPlayGroundMatrix): boolean;
  105.     procedure LoadPictureForType(FieldType: TFieldType; Picture: TPicture);
  106.     function MatrixWorth(Matrix: TPlayGroundMatrix): integer;
  107.     function GoalStatus: TGoalStatus;
  108.     function GoalFieldType(Matrix: TPlayGroundMatrix): TFieldType;
  109.   end;
  110.  
  111. var
  112.   MainForm: TMainForm;
  113.  
  114. implementation
  115.  
  116. uses
  117.   About, Finish, Choice, Functions, History, HighScore, Help, Constants;
  118.  
  119. {$R *.dfm}
  120.  
  121. function TMainForm.MatrixHasGoal(Matrix: TPlayGroundMatrix): boolean;
  122. var
  123.   i, j: integer;
  124. begin
  125.   result := false;
  126.   for i := Low(Matrix) to High(Matrix) do
  127.   begin
  128.     for j := Low(Matrix[i]) to High(Matrix[i]) do
  129.     begin
  130.       result := result or Matrix[i][j].Goal;
  131.     end;
  132.   end;
  133. end;
  134.  
  135. function TMainForm.GoalFieldType(Matrix: TPlayGroundMatrix): TFieldType;
  136. var
  137.   i, j: integer;
  138. begin
  139.   for i := Low(Matrix) to High(Matrix) do
  140.   begin
  141.     for j := Low(Matrix[i]) to High(Matrix[i]) do
  142.     begin
  143.       if Matrix[i][j].Goal then result := Matrix[i][j].FieldType
  144.     end;
  145.   end;
  146. end;
  147.  
  148. function TMainForm.MatrixWorth(Matrix: TPlayGroundMatrix): integer;
  149. var
  150.   i, j: integer;
  151. begin
  152.   result := 0;
  153.   for i := Low(Matrix) to High(Matrix) do
  154.   begin
  155.     for j := Low(Matrix[i]) to High(Matrix[i]) do
  156.     begin
  157.       Inc(result, FieldTypeWorth(Matrix[i][j].FieldType));
  158.     end;
  159.   end;
  160. end;
  161.  
  162. procedure TMainForm.ClearMatrix(Matrix: TPlayGroundMatrix; FreeVCL: boolean);
  163. var
  164.   i, j: integer;
  165. begin
  166.   for i := Low(Matrix) to High(Matrix) do
  167.   begin
  168.     for j := Low(Matrix[i]) to High(Matrix[i]) do
  169.     begin
  170.       if FreeVCL then
  171.       begin
  172.         if Assigned(Matrix[i][j].Stone) then Matrix[i][j].Stone.Free;
  173.         if Assigned(Matrix[i][j].Panel) then Matrix[i][j].Panel.Free;
  174.       end;
  175.     end;
  176.     SetLength(Matrix[i], 0);
  177.   end;
  178.   SetLength(Matrix, 0);
  179. end;
  180.  
  181. procedure TMainForm.RedrawStonesFromMatrix(Matrix: TPlayGroundMatrix);
  182. var
  183.   i, j: integer;
  184. begin
  185.   for i := Low(Matrix) to High(Matrix) do
  186.   begin
  187.     for j := Low(Matrix[i]) to High(Matrix[i]) do
  188.     begin
  189.       if Assigned(Matrix[i][j].Stone) then
  190.       begin
  191.         LoadPictureForType(Matrix[i][j].FieldType, Matrix[i][j].Stone.Picture);
  192.         StoneDraggingAllow(Matrix[i][j].Stone, FieldState(Matrix[i][j].FieldType) <> fsAvailable);
  193.       end;
  194.     end;
  195.   end;
  196. end;
  197.  
  198. procedure TMainForm.DestroyLevel;
  199. var
  200.   i: Integer;
  201. begin
  202.   MPauseTime.Enabled := false;
  203.   Timer.Enabled := false;
  204.  
  205.   MRestartGame.Enabled := false;
  206.  
  207.   LevelFile := '';
  208.  
  209.   CountedSeconds := 0;
  210.   RefreshTime;
  211.  
  212.   Points := 0;
  213.   RefreshPoints;
  214.  
  215.   LevelRemovedStones := 0;
  216.   LevelTotalStones := 0;
  217.   RefreshStonesRemoved;
  218.  
  219.   JumpHistory.Clear;
  220.  
  221.   ClearMatrix(PlayGroundMatrix, true);
  222.   ClearMatrix(OriginalPlayGroundMatrix, false);
  223.   for i := 0 to Length(PrevPlaygroundMatrixes)-1 do
  224.     ClearMatrix(PrevPlaygroundMatrixes[i], false);
  225.   SetLength(PrevPlaygroundMatrixes, 0);
  226.   MUndo.Enabled := false;
  227.  
  228.   SetLength(LookupFieldCoordinateArray, 0);
  229. end;
  230.  
  231. procedure TMainForm.LoadPictureForType(FieldType: TFieldType; Picture: TPicture);
  232. begin
  233.   case FieldType of
  234.     ftEmpty:  Picture.Bitmap.LoadFromResourceName(HInstance, RES_EMPTY);
  235.     ftGreen:  Picture.Bitmap.LoadFromResourceName(HInstance, RES_GREEN);
  236.     ftYellow: Picture.Bitmap.LoadFromResourceName(HInstance, RES_YELLOW);
  237.     ftRed:    Picture.Bitmap.LoadFromResourceName(HInstance, RES_RED);
  238.   end;
  239. end;
  240.  
  241. function TMainForm.DrawStone(fieldtype: TFieldType; panel: TPanel): TImage;
  242. begin
  243.   result := TImage.Create(panel);
  244.   result.Parent := panel;
  245.   LoadPictureForType(fieldtype, result.Picture);
  246.   result.Width := panel.Width - 2*MET_SHAPE_MARGIN;
  247.   result.Height := panel.Height - 2*MET_SHAPE_MARGIN;
  248.   result.Left := MET_SHAPE_MARGIN;
  249.   result.Top := MET_SHAPE_MARGIN;
  250.   result.Center := true;
  251.   result.Transparent := true;
  252.  
  253.   result.Tag := panel.Tag;
  254.   result.OnDragOver := panel.OnDragOver;
  255.   result.OnDragDrop := panel.OnDragDrop;
  256.  
  257.   StoneDraggingAllow(result, FieldState(fieldtype) <> fsAvailable);
  258. end;
  259.  
  260. procedure TMainForm.StoneDraggingAllow(Stone: TImage; Allow: boolean);
  261. begin
  262.   if Allow then
  263.   begin
  264.     Stone.DragMode := dmAutomatic;
  265.     (Stone.Parent as TPanel).DragMode := dmAutomatic;
  266.   end
  267.   else
  268.   begin
  269.     Stone.DragMode := dmManual;
  270.     (Stone.Parent as TPanel).DragMode := dmManual;
  271.   end;
  272. end;
  273.  
  274. function TMainForm.DrawStoneBox(x, y, tag, halftabs: integer; isGoal: boolean): TPanel;
  275. begin
  276.   result := TPanel.Create(Playground);
  277.   result.Parent := Playground;
  278.   if isGoal then
  279.   begin
  280.     result.BevelInner := bvLowered;
  281.   end;
  282.   result.Color := Playground.Color;
  283.   result.BevelOuter := bvLowered;
  284.   result.Width := MET_FIELD_SIZE;
  285.   result.Height := MET_FIELD_SIZE;
  286.   result.Left := x * (MET_FIELD_SIZE+MET_FIELD_SPACE) + MET_FIELD_SPACE - (halftabs*MET_HALFTAB_SIZE);
  287.   result.Top := y * (MET_FIELD_SIZE+MET_FIELD_SPACE) + MET_FIELD_SPACE;
  288.  
  289.   result.Tag := tag;
  290.   result.OnDragOver := StoneDragOver;
  291.   result.OnDragDrop := StoneDragDrop;
  292. end;
  293.  
  294. procedure TMainForm.MExitClick(Sender: TObject);
  295. begin
  296.   Close;
  297. end;
  298.  
  299. function TMainForm.FieldState(t: TFieldType): TFieldState;
  300. begin
  301.   result := fsError;
  302.   case t of
  303.     ftLocked:        result := fsLocked;
  304.     ftLockedWithTab: result := fsLocked;
  305.     ftEmpty:         result := fsAvailable;
  306.     ftGreen:         result := fsStone;
  307.     ftYellow:        result := fsStone;
  308.     ftRed:           result := fsStone;
  309.   end;
  310. end;
  311.  
  312. function TMainForm.FieldState(f: TField): TFieldState;
  313. begin
  314.   result := FieldState(f.FieldType);
  315. end;
  316.  
  317. function TMainForm.FieldState(x, y: integer): TFieldState;
  318. begin
  319.   result := fsError;
  320.   if (x < Low(PlayGroundMatrix)) or (x > High(PlayGroundMatrix)) then exit;
  321.   if (y < Low(PlayGroundMatrix[x])) or (y > High(PlayGroundMatrix[x])) then exit;
  322.  
  323.   result := FieldState(PlayGroundMatrix[x][y]);
  324. end;
  325.  
  326. procedure TMainForm.RefreshTime;
  327. begin
  328.   Statistics.Panels.Items[0].Text := Format(LNG_TIME, [LevelTime]);
  329. end;
  330.  
  331. procedure TMainForm.RefreshStonesRemoved;
  332. begin
  333.   Statistics.Panels.Items[1].Text := Format(LNG_STONES_REMOVED, [LevelRemovedStones, LevelTotalStones]);
  334. end;
  335.  
  336. procedure TMainForm.RefreshPoints;
  337. begin
  338.   Statistics.Panels.Items[2].Text := Format(LNG_POINTS, [Points]);
  339. end;
  340.  
  341. procedure TMainForm.CountPoints(t: TFieldType);
  342. begin
  343.   inc(Points, FieldTypeWorth(t));
  344.   RefreshPoints;
  345. end;
  346.  
  347. procedure TMainForm.RemoveStone(x, y: integer; count_points: boolean);
  348. begin
  349.   if count_points then
  350.   begin
  351.     CountPoints(PlayGroundMatrix[x, y].FieldType);
  352.     Inc(LevelRemovedStones);
  353.     RefreshStonesRemoved;
  354.   end;
  355.   PlayGroundMatrix[x, y].FieldType := ftEmpty;
  356.   LoadPictureForType(PlayGroundMatrix[x, y].FieldType, PlayGroundMatrix[x, y].Stone.Picture);
  357.   StoneDraggingAllow(PlayGroundMatrix[x, y].Stone, false);
  358. end;
  359.  
  360. function TMainForm.CanJump(x, y: integer): boolean;
  361. begin
  362.   if FieldState(x, y) <> fsStone then
  363.   begin
  364.     result := false;
  365.     exit;
  366.   end;
  367.  
  368.   result := true;
  369.  
  370.   if MayJump(x, y, x+2, y) then exit;
  371.   if MayJump(x, y, x-2, y) then exit;
  372.   if MayJump(x, y, x, y+2) then exit;
  373.   if MayJump(x, y, x, y-2) then exit;
  374.  
  375.   if AllowDiagonalMoves then
  376.   begin
  377.     if MayJump(x, y, x-2, y-2) then exit;
  378.     if MayJump(x, y, x+2, y-2) then exit;
  379.     if MayJump(x, y, x-2, y+2) then exit;
  380.     if MayJump(x, y, x+2, y+2) then exit;
  381.   end;
  382.  
  383.   result := false;
  384. end;
  385.  
  386. function TMainForm.AreJumpsPossible: boolean;
  387. var
  388.   i, j: integer;
  389. begin
  390.   result := false;
  391.   for i := Low(PlayGroundMatrix) to High(PlayGroundMatrix) do
  392.   begin
  393.     for j := Low(PlayGroundMatrix[i]) to High(PlayGroundMatrix[i]) do
  394.     begin
  395.       if CanJump(i, j) then
  396.       begin
  397.         result := true;
  398.         break;
  399.       end;
  400.       if result then break;
  401.     end;
  402.   end;
  403. end;
  404.  
  405. procedure TMainForm.DoJump(SourceTag, DestTag: integer);
  406. var
  407.   d, s: TPoint;
  408.   old_fieldtype: TFieldType;
  409.   res: Integer;
  410. begin
  411.   if not MayJump(SourceTag, DestTag) then exit;
  412.  
  413.   d := LookupFieldCoordinateArray[DestTag];
  414.   s := LookupFieldCoordinateArray[SourceTag];
  415.  
  416.   JumpHistory.Add(Format(LNG_JUMP_LOG, [SourceTag+1, s.x+1, s.y+1, DestTag+1, d.x+1, d.y+1]));
  417.  
  418.   {$REGION 'Stein entfernen und Punkte vergeben'}
  419.   if AllowDiagonalMoves then
  420.   begin
  421.     if (s.X-2 = d.X) and (s.Y-2 = d.Y) and (FieldState(s.X-1, s.Y-1) = fsStone) then RemoveStone(s.X-1, s.Y-1, true);
  422.     if (s.X-2 = d.X) and (s.Y+2 = d.Y) and (FieldState(s.X-1, s.Y+1) = fsStone) then RemoveStone(s.X-1, s.Y+1, true);
  423.     if (s.X+2 = d.X) and (s.Y-2 = d.Y) and (FieldState(s.X+1, s.Y-1) = fsStone) then RemoveStone(s.X+1, s.Y-1, true);
  424.     if (s.X+2 = d.X) and (s.Y+2 = d.Y) and (FieldState(s.X+1, s.Y+1) = fsStone) then RemoveStone(s.X+1, s.Y+1, true);
  425.   end;
  426.  
  427.   if (s.X+2 = d.X) and (s.Y = d.Y) and (FieldState(s.X+1, s.Y  ) = fsStone) then RemoveStone(s.X+1, s.Y, true);
  428.   if (s.X-2 = d.X) and (s.Y = d.Y) and (FieldState(s.X-1, s.Y  ) = fsStone) then RemoveStone(s.X-1, s.Y, true);
  429.   if (s.X = d.X) and (s.Y+2 = d.Y) and (FieldState(s.X  , s.Y+1) = fsStone) then RemoveStone(s.X, s.Y+1, true);
  430.   if (s.X = d.X) and (s.Y-2 = d.Y) and (FieldState(s.X  , s.Y-1) = fsStone) then RemoveStone(s.X, s.Y-1, true);
  431.   {$ENDREGION}
  432.  
  433.   // Den Timer erst nach dem ersten Zug starten
  434.   // oder nach einer Pause neustarten
  435.   if not Timer.Enabled then
  436.   begin
  437.     MPauseTime.Enabled := true;
  438.     Timer.Enabled := true;
  439.   end;
  440.  
  441.   MRestartGame.Enabled := true;
  442.  
  443.   // Sound abspielen
  444.   if MEnableSound.Checked then PlaySound(RES_JUMP, HInstance, SND_ASYNC or SND_NOWAIT or SND_RESOURCE);
  445.  
  446.   {$REGION 'Nun den Stein springen lassen'}
  447.   old_fieldtype := PlayGroundMatrix[s.X, s.Y].FieldType; // Steinfarbe merken
  448.   RemoveStone(s.X, s.Y, false); // Eigenen Stein entfernen. Keine Punkte zählen, da das unser eigener Stein ist, der springt
  449.   PlayGroundMatrix[d.X, d.Y].FieldType := old_fieldtype; // Farbe wiederherstellen
  450.   LoadPictureForType(PlayGroundMatrix[d.X, d.Y].FieldType, PlayGroundMatrix[d.X, d.Y].Stone.Picture); // Stein an neue Position malen
  451.   StoneDraggingAllow(PlayGroundMatrix[d.X, d.Y].Stone, true); // Und die Drag-Eigenschaft erneuern
  452.   {$ENDREGION}
  453.  
  454.   {$REGION 'Sind weitere Sprünge möglich oder ist das Spiel vorbei?'}
  455.   if not AreJumpsPossible then
  456.   begin
  457.     MPauseTime.Enabled := false;
  458.     Timer.Enabled := false;
  459.     RefreshTime;
  460.     if MEnableSound.Checked then
  461.     begin
  462.       if LevelRemovedStones = LevelTotalStones-1 then
  463.       begin
  464.         if GoalStatus in [gsLastStoneInGoalRed, gsLastStoneInGoalYellow, gsLastStoneInGoalGreen] then
  465.           PlaySound(RES_WIN2, HInstance, SND_ASYNC or SND_NOWAIT or SND_RESOURCE)
  466.         else
  467.           PlaySound(RES_WIN1, HInstance, SND_ASYNC or SND_NOWAIT or SND_RESOURCE)
  468.       end
  469.       else
  470.         PlaySound(RES_LOSE, HInstance, SND_ASYNC or SND_NOWAIT or SND_RESOURCE);
  471.     end;
  472.     res := FinishForm.Execute(ExtractFileNameWithoutExt(LevelFile), Points, LevelTotalStones, LevelRemovedStones, CountedSeconds, GoalStatus, JumpHistory);
  473.     if (res = mrOK) and FinishForm.ReplayCheckbox.Checked then RestartLevel;
  474.   end;
  475.   {$ENDREGION}
  476.  
  477.   SetLength(PrevPlaygroundMatrixes, Length(PrevPlaygroundMatrixes)+1);
  478.   PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1] := CloneMatrix(PlaygroundMatrix);
  479.   MUndo.Enabled := true;
  480. end;
  481.  
  482. function TMainForm.MayJump(SourceX, SourceY, DestX, DestY: integer): boolean;
  483. begin
  484.   result := false;
  485.  
  486.   // Check 1: Ist das Zielfeld überhaupt leer?
  487.   if FieldState(DestX, DestY) <> fsAvailable then exit;
  488.  
  489.   // Check 2: Befindet sich ein Stein zwischen Source und Destination und ist der Abstand 2?
  490.   if AllowDiagonalMoves then
  491.   begin
  492.     if (SourceX-2 = DestX) and (SourceY-2 = DestY) and (FieldState(SourceX-1, SourceY-1) = fsStone) then result := true;
  493.     if (SourceX-2 = DestX) and (SourceY+2 = DestY) and (FieldState(SourceX-1, SourceY+1) = fsStone) then result := true;
  494.     if (SourceX+2 = DestX) and (SourceY-2 = DestY) and (FieldState(SourceX+1, SourceY-1) = fsStone) then result := true;
  495.     if (SourceX+2 = DestX) and (SourceY+2 = DestY) and (FieldState(SourceX+1, SourceY+1) = fsStone) then result := true;
  496.   end;
  497.  
  498.   if (SourceX+2 = DestX) and (SourceY   = DestY) and (FieldState(SourceX+1, SourceY  ) = fsStone) then result := true;
  499.   if (SourceX-2 = DestX) and (SourceY   = DestY) and (FieldState(SourceX-1, SourceY  ) = fsStone) then result := true;
  500.   if (SourceX   = DestX) and (SourceY+2 = DestY) and (FieldState(SourceX  , SourceY+1) = fsStone) then result := true;
  501.   if (SourceX   = DestX) and (SourceY-2 = DestY) and (FieldState(SourceX  , SourceY-1) = fsStone) then result := true;
  502. end;
  503.  
  504. function TMainForm.MayJump(SourceTag, DestTag: integer): boolean;
  505. var
  506.   s, d: TPoint;
  507. begin
  508.   d := LookupFieldCoordinateArray[DestTag];
  509.   s := LookupFieldCoordinateArray[SourceTag];
  510.  
  511.   result := MayJump(s.X, s.Y, d.X, d.Y);
  512. end;
  513.  
  514. procedure TMainForm.StoneDragDrop(Sender, Source: TObject; X, Y: Integer);
  515. begin
  516.   DoJump(TComponent(Source).Tag, TComponent(Sender).Tag);
  517. end;
  518.  
  519. procedure TMainForm.StoneDragOver(Sender, Source: TObject; X,
  520.   Y: Integer; State: TDragState; var Accept: Boolean);
  521. begin
  522.   Accept := MayJump(TComponent(Source).Tag, TComponent(Sender).Tag);
  523. end;
  524.  
  525. procedure TMainForm.DrawField(x, y: integer; t: TFieldProperties; halftabs: integer);
  526. var
  527.   newField: TField;
  528.   index: integer;
  529. begin
  530.   if (t.Typ = ftLocked) or (t.Typ = ftLockedWithTab) then exit;
  531.  
  532.   index := Length(LookupFieldCoordinateArray);
  533.  
  534.   newField.FieldType := t.Typ;
  535.   newField.Goal := t.Goal;
  536.   newField.Panel := DrawStoneBox(x, y, index, halftabs, t.Goal);
  537.   newField.Stone := DrawStone(t.Typ, newField.Panel);
  538.   if FieldState(t.Typ) = fsStone then Inc(LevelTotalStones);
  539.  
  540.   SetLength(LookupFieldCoordinateArray, index + 1);
  541.   LookupFieldCoordinateArray[index].X := x;
  542.   LookupFieldCoordinateArray[index].Y := y;
  543.  
  544.   if Length(PlayGroundMatrix) < x+1 then SetLength(PlayGroundMatrix, x+1);
  545.   if Length(PlayGroundMatrix[x]) < y+1 then SetLength(PlayGroundMatrix[x], y+1);
  546.   PlaygroundMatrix[x, y] := newField;
  547. end;
  548.  
  549. function TMainForm.CloneMatrix(Source: TPlayGroundMatrix): TPlayGroundMatrix;
  550. var
  551.   i, j: integer;
  552. begin
  553.   SetLength(result, Length(Source));
  554.   for i := Low(Source) to High(Source) do
  555.   begin
  556.     SetLength(result[i], Length(Source[i]));
  557.     for j := Low(Source[i]) to High(Source[i]) do
  558.     begin
  559.       result[i][j].FieldType := Source[i][j].FieldType;
  560.       result[i][j].Goal      := Source[i][j].Goal;
  561.       result[i][j].Panel     := Source[i][j].Panel;
  562.       result[i][j].Stone     := Source[i][j].Stone;
  563.     end;
  564.   end;
  565. end;
  566.  
  567. procedure TMainForm.BuildPlayground(LevelArray: TLevelArray);
  568. var
  569.   i, j, halftabs, cur_x: integer;
  570.   max_x, max_y, old_cw, old_ch: integer;
  571. begin
  572.   PlayGround.Visible := false;
  573.  
  574.   // Die Dimensionen ermitteln
  575.   max_x := 0;
  576.   for i := Low(LevelArray) to High(LevelArray) do
  577.   begin
  578.     halftabs := 0;
  579.     for j := Low(LevelArray[i]) to High(LevelArray[i]) do
  580.     begin
  581.       if LevelArray[i][j].Typ = ftLockedWithTab then inc(halftabs);
  582.       DrawField(j, i, LevelArray[i][j], halftabs);
  583.     end;
  584.     cur_x := High(LevelArray[i]) + 1;
  585.     if cur_x > max_x then max_x := cur_x;
  586.   end;
  587.   max_y := High(LevelArray) + 1;
  588.  
  589.   PlayGround.Visible := true;
  590.  
  591.   // Die aktuellen Dimensionen merken
  592.   old_cw := ClientWidth;
  593.   old_ch := ClientHeight;
  594.  
  595.   // Das Form an das Level anpassen
  596.   PlayGround.Width := MET_FIELD_SPACE + max_x * (MET_FIELD_SPACE + MET_FIELD_SIZE);
  597.   PlayGround.Height := MET_FIELD_SPACE + max_y * (MET_FIELD_SPACE + MET_FIELD_SIZE);
  598.   ClientWidth := 2 * MET_OUTER_MARGIN + PlayGround.Width;
  599.   ClientHeight := 2 * MET_OUTER_MARGIN + PlayGround.Height + Statistics.Height;
  600.  
  601.   Statistics.Panels.Items[0].Width := Round(ClientWidth*MET_PERCENT_PNL_TIME);
  602.   Statistics.Panels.Items[1].Width := Round(ClientWidth*MET_PERCENT_PNL_STONES);
  603.  
  604.   // Wenn sich das Form vergrößert oder verkleinert hat, neu justieren
  605.   if (old_cw <> ClientWidth) or (old_ch <> ClientHeight) then
  606.   begin
  607.     Left := Screen.Width div 2 - Width div 2;
  608.     Top := Screen.Height div 2 - Height div 2;
  609.    
  610.     // Playground mittig setzen, falls die Mindestgröße für die
  611.     // Punkteanzeige unterschritten wurde,
  612.     PlayGround.Left := ClientWidth div 2 - PlayGround.Width div 2;
  613.     PlayGround.Top := ClientHeight div 2 - PlayGround.Height div 2;
  614.   end;
  615.  
  616.   OriginalPlayGroundMatrix := CloneMatrix(PlayGroundMatrix);
  617.   SetLength(PrevPlaygroundMatrixes,1);
  618.   PrevPlaygroundMatrixes[0] := CloneMatrix(PlayGroundMatrix);
  619.   MUndo.Enabled := false;
  620. end;
  621.  
  622. procedure TMainForm.TimerTimer(Sender: TObject);
  623. begin
  624.   if mainform.Focused then Inc(CountedSeconds);
  625.   RefreshTime;
  626. end;
  627.  
  628. function TMainForm.LevelTime: String;
  629. begin
  630.   result := SecondsToTimeString(CountedSeconds);
  631. end;
  632.  
  633. procedure TMainForm.NewGame(Filename: string);
  634. var
  635.   LevelString: String;
  636.   LevelArray: TLevelArray;
  637. begin                          
  638.   DestroyLevel;
  639.   LevelFile := Filename;
  640.   LevelString := ReadFile(LevelFile);
  641.   LevelArray := LevelStringToLevelArray(LevelString, true);
  642.   if Length(LevelArray) = 0 then Exit;
  643.   BuildPlayground(LevelArray);
  644.   if not AreJumpsPossible then
  645.   begin
  646.     ShowMessage(LNG_LVL_INVALID_NO_JUMP);
  647.   end;
  648.   RefreshTime;
  649.   RefreshStonesRemoved;
  650.   RefreshPoints;
  651. end;
  652.  
  653. procedure TMainForm.MNewGameClick(Sender: TObject);
  654. begin
  655.   LevelFile := AskForLevel;
  656.   if LevelFile <> '' then
  657.   begin
  658.     NewGame(LevelFile);
  659.   end;
  660. end;
  661.  
  662. procedure TMainForm.MAboutClick(Sender: TObject);
  663. begin
  664.   AboutBox.ShowModal;
  665. end;
  666.  
  667. function TMainForm.AskForLevel: String;
  668. begin
  669.   LevelChoice.ShowModal;
  670.  
  671.   if LevelChoice.ModalResult <> mrOK then
  672.   begin
  673.     result := '';
  674.     exit;
  675.   end;
  676.  
  677.   result := LevelChoice.SelectedLevel;
  678. end;
  679.  
  680. procedure TMainForm.FormShow(Sender: TObject);
  681. begin
  682.   LevelFile := AskForLevel;
  683.   if LevelFile <> '' then
  684.   begin
  685.     NewGame(LevelFile);
  686.   end
  687.   else Close();
  688. end;
  689.  
  690. function TMainForm.GoalStatus: TGoalStatus;
  691. var
  692.   ft: TFieldType;
  693. begin
  694.   if not MatrixHasGoal(PlaygroundMatrix) then
  695.     result := gsNoGoal
  696.   else if LevelRemovedStones < LevelTotalStones-1 then
  697.     Result := gsMultipleStonesRemaining
  698.   else
  699.   begin
  700.     ft := GoalFieldType(PlaygroundMatrix);
  701.     if ft = ftRed then
  702.       result := gsLastStoneInGoalRed
  703.     else if ft = ftYellow then
  704.       result := gsLastStoneInGoalYellow
  705.     else if ft = ftGreen then
  706.       result := gsLastStoneInGoalGreen;
  707.   end;
  708. end;
  709.  
  710. procedure TMainForm.FormCreate(Sender: TObject);
  711. begin
  712.   JumpHistory := TStringList.Create;
  713.   LoadSettings;
  714. end;
  715.  
  716. procedure TMainForm.FormDestroy(Sender: TObject);
  717. begin
  718.   JumpHistory.Free;
  719. end;
  720.  
  721. procedure TMainForm.MJumpHistoryClick(Sender: TObject);
  722. begin
  723.   HistoryForm.JumpMemo.Lines.Assign(JumpHistory);
  724.   HistoryForm.ShowModal;
  725. end;
  726.  
  727. procedure TMainForm.RestartLevel;
  728. begin
  729.   MPauseTime.Enabled := false;
  730.   Timer.Enabled := false;
  731.  
  732.   MRestartGame.Enabled := false;
  733.  
  734.   CountedSeconds := 0;
  735.   RefreshTime;
  736.  
  737.   Points := 0;
  738.   RefreshPoints;
  739.  
  740.   LevelRemovedStones := 0;
  741.   RefreshStonesRemoved;
  742.  
  743.   JumpHistory.Clear;
  744.  
  745.   RedrawStonesFromMatrix(OriginalPlayGroundMatrix);
  746.   SetNewPlayGroundMatrix(OriginalPlayGroundMatrix);
  747.   SetLength(PrevPlaygroundMatrixes,1);
  748.   PrevPlaygroundMatrixes[0] := CloneMatrix(OriginalPlayGroundMatrix);
  749.   MUndo.Enabled := false;
  750. end;
  751.  
  752. procedure TMainForm.SetNewPlayGroundMatrix(Matrix: TPlayGroundMatrix);
  753. begin
  754.   ClearMatrix(PlayGroundMatrix, false); // Memory Leak verhindern
  755.   PlayGroundMatrix := CloneMatrix(Matrix);
  756. end;
  757.  
  758. procedure TMainForm.MRestartGameClick(Sender: TObject);
  759. begin
  760.   RestartLevel;
  761. end;
  762.  
  763. procedure TMainForm.MUndoClick(Sender: TObject);
  764. var
  765.   PrevWorth: integer;
  766.   NewWorth: integer;
  767. begin
  768.   if Length(PrevPlaygroundMatrixes) > 1 then
  769.   begin
  770.     PrevWorth := MatrixWorth(PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1]);
  771.  
  772.     ClearMatrix(PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1], false);
  773.     SetLength(PrevPlaygroundMatrixes, Length(PrevPlaygroundMatrixes)-1);
  774.  
  775.     NewWorth := MatrixWorth(PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1]);
  776.     RedrawStonesFromMatrix(PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1]);
  777.     SetNewPlayGroundMatrix(PrevPlaygroundMatrixes[Length(PrevPlaygroundMatrixes)-1]);
  778.  
  779.     JumpHistory.Delete(JumpHistory.Count-1);
  780.  
  781.     Dec(LevelRemovedStones);
  782.     RefreshStonesRemoved;
  783.  
  784.     Dec(Points, NewWorth-PrevWorth);
  785.     RefreshPoints;
  786.  
  787.     // Sound abspielen
  788.     if MEnableSound.Checked then PlaySound(RES_UNDO, HInstance, SND_ASYNC or SND_NOWAIT or SND_RESOURCE);
  789.   end;
  790.  
  791.   MUndo.Enabled := Length(PrevPlaygroundMatrixes) > 1;
  792. end;
  793.  
  794. procedure TMainForm.MHighScoresClick(Sender: TObject);
  795. begin
  796.   HighScoreForm.Execute(ExtractFileNameWithoutExt(LevelFile));
  797. end;
  798.  
  799. procedure TMainForm.MPauseTimeClick(Sender: TObject);
  800. begin
  801.   MPauseTime.Enabled := false;
  802.   Timer.Enabled := false;
  803. end;
  804.  
  805. procedure TMainForm.LoadSettings;
  806. var
  807.   reg: TRegistry;
  808. begin
  809.   reg := TRegistry.Create;
  810.   try
  811.     reg.RootKey := HKEY_CURRENT_USER;
  812.     if reg.OpenKeyReadOnly(REG_KEY) then
  813.     begin
  814.       if reg.ValueExists(REG_SOUND) then
  815.         MEnableSound.Checked := reg.ReadBool(REG_SOUND);
  816.       reg.CloseKey;
  817.     end;
  818.   finally
  819.     reg.Free;
  820.   end;
  821. end;
  822.  
  823. procedure TMainForm.SaveSettings;
  824. var
  825.   reg: TRegistry;
  826. begin
  827.   reg := TRegistry.Create;
  828.   try
  829.     reg.RootKey := HKEY_CURRENT_USER;
  830.     if reg.OpenKey(REG_KEY, true) then
  831.     begin
  832.       reg.WriteBool(REG_SOUND, MEnableSound.Checked);
  833.       reg.CloseKey;
  834.     end;
  835.   finally
  836.     reg.Free;
  837.   end;
  838. end;
  839.  
  840.  
  841. procedure TMainForm.FormClose(Sender: TObject; var Action: TCloseAction);
  842. begin
  843.   SaveSettings;
  844.   if FinishForm.NameEdit.Text <> '' then
  845.   begin
  846.     FinishForm.SaveSettings;
  847.   end;
  848. end;
  849.  
  850. procedure TMainForm.MHelpClick(Sender: TObject);
  851. begin
  852.   HelpForm.ShowModal;
  853. end;
  854.  
  855. procedure TMainForm.MEnableSoundClick(Sender: TObject);
  856. begin
  857.   MEnableSound.Checked := not MEnableSound.Checked;
  858. end;
  859.  
  860. end.
  861.