flutter: Support setting position

src/ui/flutter_app/lib/engine/engine.dart

@@ -22,6 +22,7 @@ enum EngineType {
   humanVsAi,
   humanVsHuman,
   aiVsAi,
+  setPosition,
   humanVsCloud, // Not Implemented
   humanVsLAN, // Not Implemented
   testViaLAN, // Not Implemented

src/ui/flutter_app/lib/l10n/intl_de.arb

@@ -32,6 +32,10 @@
   "@aiVsAi": {
     "description": "AI Vs AI"
   },
+  "setPosition": "Position Setzen",
+  "@setPosition": {
+    "description": "Set Position"
+  },
   "humanVsCloud": "Mensch gegen Cloud",
   "@humanVsCloud": {
     "description": "Human Vs Cloud"

src/ui/flutter_app/lib/l10n/intl_en.arb

@@ -32,6 +32,10 @@
   "@aiVsAi": {
     "description": "AI Vs AI"
   },
+  "setPosition": "Set Position",
+  "@setPosition": {
+    "description": "Set Position"
+  },
   "humanVsCloud": "Human Vs Cloud",
   "@humanVsCloud": {
     "description": "Human Vs Cloud"

src/ui/flutter_app/lib/l10n/intl_fa.arb

@@ -32,6 +32,10 @@
   "@aiVsAi": {
     "description": "AI Vs AI"
   },
+  "setPosition": "مکان را ویرایش کنید",
+  "@setPosition": {
+    "description": "Set Position"
+  },
   "humanVsCloud": "Human Vs Cloud",
   "@humanVsCloud": {
     "description": "Human Vs Cloud"

src/ui/flutter_app/lib/l10n/intl_zh.arb

@@ -8,6 +8,7 @@
   "humanVsAi": "人机对战",
   "humanVsHuman": "双人对战",
   "aiVsAi": "机器对战",
+  "setPosition": "编辑局面",
   "humanVsCloud": "挑战云端",
   "humanVsLAN": "联网对战",
   "testViaLAN": "联网测试",

src/ui/flutter_app/lib/mill/game.dart

@@ -99,6 +99,7 @@ class Game {
         isAi[PieceColor.black] = !Config.aiMovesFirst;
         break;
       case EngineType.humanVsHuman:
+      case EngineType.setPosition:
       case EngineType.humanVsLAN:
       case EngineType.humanVsCloud:
         isAi[PieceColor.white] = isAi[PieceColor.black] = false;

src/ui/flutter_app/lib/mill/position.dart

@@ -455,6 +455,48 @@ class Position {
     }
   }
 
+  bool putPiece2(int s, String pt) {
+    var piece = pt;
+    var us = pt;
+
+    if (!(sqBegin <= s && s < sqEnd) || board[s] != Piece.noPiece) {
+      return false;
+    }
+
+    if (pieceOnBoardCount[us] != null) {
+      if (pieceOnBoardCount[us]! + 1 > rule.piecesCount) {
+        return false;
+      } else {
+        pieceOnBoardCount[us] = pieceOnBoardCount[us]! + 1;
+      }
+    }
+
+    if (pieceInHandCount[us] != null) {
+      pieceInHandCount[us] = pieceInHandCount[us]! - 1;
+
+      if (pieceInHandCount[us]! < 0) {
+        pieceInHandCount[us] = 0;
+      }
+    }
+
+    // TODO: Need?
+    if (phase == Phase.ready) {
+      start();
+    }
+
+    _grid[squareToIndex[s]!] = piece;
+    board[s] = piece;
+
+    record = "(" + fileOf(s).toString() + "," + rankOf(s).toString() + ")";
+
+    updateKey(s);
+
+    // TODO: need?
+    currentSquare = s;
+
+    return true;
+  }
+
   bool putPiece(int s) {
     var piece = Piece.noPiece;
     var us = _sideToMove;

src/ui/flutter_app/lib/widgets/game_page.dart

@@ -73,6 +73,8 @@ class _GamePageState extends State<GamePage>
   late Animation animation;
   bool disposed = false;
   bool ltr = true;
+  var setPositionPieceColor = PieceColor.white;
+  var pieceColorIcon = Icons.looks_one_outlined;
   final String tag = "[game_page]";
 
   @override
@@ -209,7 +211,8 @@ class _GamePageState extends State<GamePage>
 
     // TODO
     // WAR: Fix first tap response slow when piece count changed
-    if (position.phase == Phase.placing &&
+    if (Game.instance.engineType != EngineType.setPosition &&
+        position.phase == Phase.placing &&
         position.pieceOnBoardCount[PieceColor.white] == 0 &&
         position.pieceOnBoardCount[PieceColor.black] == 0) {
       Game.instance.newGame();
@@ -231,6 +234,13 @@ class _GamePageState extends State<GamePage>
       return false;
     }
 
+    // setPosition
+    if (Game.instance.engineType == EngineType.setPosition) {
+      print(
+          "$tag Engine type is set position. Put $setPositionPieceColor on $sq.");
+      return position.putPiece2(sq, setPositionPieceColor);
+    }
+
     if (position.phase == Phase.ready) {
       Game.instance.start();
     }
@@ -1167,6 +1177,7 @@ class _GamePageState extends State<GamePage>
       EngineType.humanVsAi: Config.aiMovesFirst ? Icons.computer : Icons.person,
       EngineType.humanVsHuman: Icons.person,
       EngineType.aiVsAi: Icons.computer,
+      EngineType.setPosition: Icons.add_circle,
       EngineType.humanVsCloud: Icons.person,
       EngineType.humanVsLAN: Icons.person,
       EngineType.testViaLAN: Icons.cast,
@@ -1176,6 +1187,7 @@ class _GamePageState extends State<GamePage>
       EngineType.humanVsAi: Config.aiMovesFirst ? Icons.person : Icons.computer,
       EngineType.humanVsHuman: Icons.person,
       EngineType.aiVsAi: Icons.computer,
+      EngineType.setPosition: Icons.add_circle_outline,
       EngineType.humanVsCloud: Icons.cloud,
       EngineType.humanVsLAN: Icons.cast,
       EngineType.testViaLAN: Icons.cast,
@@ -1490,6 +1502,109 @@ class _GamePageState extends State<GamePage>
     );
   }
 
+  Widget createSetPositionToolbar() {
+    var pieceColor = "White";
+    var phase = "Moving";
+
+    if (setPositionPieceColor == PieceColor.white) {
+      pieceColorIcon = Icons.looks_one_outlined;
+    } else if (setPositionPieceColor == PieceColor.black) {
+      pieceColorIcon = Icons.looks_two_outlined;
+    } else if (setPositionPieceColor == PieceColor.ban) {
+      pieceColorIcon = Icons.cancel_outlined;
+    }
+
+    var setPieceColorButton = TextButton(
+      child: Column(
+        // Replace with a Row for horizontal icon + text
+        children: <Widget>[
+          Icon(
+            pieceColorIcon,
+            color: AppTheme.toolbarIconColor,
+          ),
+        ],
+      ),
+      onPressed: () => onSetPieceColorButtonPressed(),
+    );
+
+    var setPhaseButton = TextButton(
+      child: Column(
+        // Replace with a Row for horizontal icon + text
+        children: <Widget>[
+          Icon(
+            Game.instance.position.phase == Phase.moving
+                ? Icons.swipe
+                : Icons.touch_app,
+            color: AppTheme.toolbarIconColor,
+          ),
+        ],
+      ),
+      onPressed: () => onTakeBackButtonPressed(pop: false),
+    );
+
+    var undoButton = TextButton(
+      child: Column(
+        // Replace with a Row for horizontal icon + text
+        children: <Widget>[
+          Icon(
+            Icons.arrow_back,
+            color: AppTheme.toolbarIconColor,
+          ),
+        ],
+      ),
+      onPressed: () => onStepForwardButtonPressed(pop: false),
+    );
+
+    var clearButton = TextButton(
+      child: Column(
+        // Replace with a Row for horizontal icon + text
+        children: <Widget>[
+          Icon(
+            Icons.cleaning_services,
+            color: AppTheme.toolbarIconColor,
+          ),
+        ],
+      ),
+      onPressed: () => onStepForwardAllButtonPressed(pop: false),
+    );
+
+    return Container(
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(5),
+        color: Color(Config.boardBackgroundColor),
+      ),
+      margin: EdgeInsets.symmetric(horizontal: GamePage.screenPaddingH),
+      padding: EdgeInsets.symmetric(vertical: 2),
+      child: Row(children: <Widget>[
+        Expanded(child: SizedBox()),
+        setPieceColorButton,
+        Expanded(child: SizedBox()),
+        setPhaseButton,
+        Expanded(child: SizedBox()),
+        undoButton,
+        Expanded(child: SizedBox()), //dashboard_outlined
+        clearButton,
+        Expanded(child: SizedBox()),
+      ]),
+    );
+  }
+
+  onSetPieceColorButtonPressed() {
+    if (setPositionPieceColor == PieceColor.white) {
+      setPositionPieceColor = PieceColor.black;
+    } else if (setPositionPieceColor == PieceColor.black) {
+      if (rule.hasBannedLocations) {
+        setPositionPieceColor = PieceColor.ban;
+      } else {
+        setPositionPieceColor = PieceColor.white;
+      }
+    } else {
+      setPositionPieceColor = PieceColor.white;
+    }
+
+    setState(() {});
+  }
+
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
@@ -1518,6 +1633,7 @@ class _GamePageState extends State<GamePage>
     final board = createBoard();
     final toolbar = createToolbar();
     final historyNavToolbar = createHistoryNavigationToolbar();
+    final setPositionToolbar = createSetPositionToolbar();
 
     return Scaffold(
       backgroundColor: Color(Config.darkBackgroundColor),
@@ -1528,7 +1644,9 @@ class _GamePageState extends State<GamePage>
             ? historyNavToolbar
             : SizedBox(height: 0),
         SizedBox(height: 1),
-        toolbar,
+        Game.instance.engineType == EngineType.setPosition
+            ? setPositionToolbar
+            : toolbar,
       ]),
       /*
       body: Column(children: <Widget>[

src/ui/flutter_app/lib/widgets/home_drawer.dart

@@ -29,6 +29,7 @@ enum DrawerIndex {
   humanVsAi,
   humanVsHuman,
   aiVsAi,
+  setPosition,
   preferences,
   ruleSettings,
   personalization,
@@ -88,6 +89,11 @@ class _HomeDrawerState extends State<HomeDrawer> {
         title: S.of(context).aiVsAi,
         icon: Icon(Icons.computer),
       ),
+      DrawerListItem(
+        index: DrawerIndex.setPosition,
+        title: S.of(context).setPosition,
+        icon: Icon(Icons.place),
+      ),
       DrawerListItem(
         index: DrawerIndex.preferences,
         title: S.of(context).preferences,

src/ui/flutter_app/lib/widgets/navigation_home_screen.dart

@@ -83,6 +83,7 @@ class _NavigationHomeScreenState extends State<NavigationHomeScreen> {
       DrawerIndex.humanVsAi: EngineType.humanVsAi,
       DrawerIndex.humanVsHuman: EngineType.humanVsHuman,
       DrawerIndex.aiVsAi: EngineType.aiVsAi,
+      DrawerIndex.setPosition: EngineType.setPosition,
     };
 
     drawerIndex = index;