start fixing frontend

crypto_clash_frontend/app/clash/Commit.tsx

@@ -18,6 +18,16 @@ interface CommitProps {
   gameDetails: GameDetails | null;
   setSecret: (secret: string) => void;
   savePlayMove: (playMove: string) => void;
+  // MinusOne mode props
+  selectedMove1?: string | null;
+  setSelectedMove1?: (move: string | null) => void;
+  selectedMove2?: string | null;
+  setSelectedMove2?: (move: string | null) => void;
+  secret1?: string;
+  setSecret1?: (secret: string) => void;
+  secret2?: string;
+  setSecret2?: (secret: string) => void;
+  isWithdrawPhase?: boolean;
 }
 
 type MoveName = "Rock" | "Paper" | "Scissors";
@@ -40,10 +50,21 @@ export default function Commit({
   setSecret,
   savePlayMove,
   whoAmI,
-  gameDetails
+  gameDetails,
+  selectedMove1,
+  setSelectedMove1,
+  selectedMove2,
+  setSelectedMove2,
+  secret1,
+  setSecret1,
+  secret2,
+  setSecret2,
+  isWithdrawPhase = false,
 }: Readonly<CommitProps>) {
   const [loading, setLoading] = useState(false);
   const [playMove, setPlayMove] = useState<string>("");
+  const [playMove1, setPlayMove1] = useState<string>("");
+  const [playMove2, setPlayMove2] = useState<string>("");
   const [selfPlayed, setSelfPlayed] = useState<string>("");
   const [opponentPlayed, setOpponentPlayed] = useState<string>("");
   const [bothPlayed, setBothPlayed] = useState<string>("");
@@ -52,17 +73,32 @@ export default function Commit({
   const [commitTimeLeft, setCommitTimeLeft] = useState<number>(0);
   const [timeoutExpired, setTimeoutExpired] = useState(false);
 
+  const isMinusOne = gameDetails?.gameMode === "minusone";
+
   // Update encrypted move when move or secret changes
   useEffect(() => {
-    if (selectedMove && secret) {
+    if (isMinusOne && !isWithdrawPhase) {
+      // MinusOne initial commit: two moves
+      if (selectedMove1 && secret1) {
+        const clearMove1 = `${selectedMove1}-${secret1}`;
+        const hash1 = Web3.utils.keccak256(clearMove1);
+        setPlayMove1(hash1);
+      }
+      if (selectedMove2 && secret2) {
+        const clearMove2 = `${selectedMove2}-${secret2}`;
+        const hash2 = Web3.utils.keccak256(clearMove2);
+        setPlayMove2(hash2);
+      }
+    } else if (selectedMove && secret) {
+      // Classic mode or withdrawal phase: single move/choice
       const clearMove = `${selectedMove}-${secret}`;
-      // Use keccak256 (Ethereum's standard hash function)
       const hash = Web3.utils.keccak256(clearMove);
       setPlayMove(hash);
-      // Persist to sessionStorage through parent
+      if (!isWithdrawPhase) {
         savePlayMove(hash);
       }
-  }, [selectedMove, secret, savePlayMove]);
+    }
+  }, [selectedMove, secret, selectedMove1, secret1, selectedMove2, secret2, isMinusOne, isWithdrawPhase, savePlayMove]);
 
   // Auto-check if both players have committed and trigger callback
   useEffect(() => {
@@ -75,9 +111,18 @@ export default function Commit({
 
     const checkSelfPlayed = async () => {
       try {
-        const encrMove = gameDetails[whoAmI === "player1" ? "playerA" : "playerB"].encrMove;
+        const player = gameDetails[whoAmI === "player1" ? "playerA" : "playerB"];
         
-        setSelfPlayed(Number(encrMove) !== 0 ? "true" : "false");
+        if (isMinusOne && !isWithdrawPhase) {
+          // Check hash1 for initial commit phase
+          setSelfPlayed(player.hash1 && Number(player.hash1) !== 0 ? "true" : "false");
+        } else if (isMinusOne && isWithdrawPhase) {
+          // Check wHash for withdrawal commit phase
+          setSelfPlayed(player.wHash && Number(player.wHash) !== 0 ? "true" : "false");
+        } else {
+          // Classic mode: check encrMove
+          setSelfPlayed(player.encrMove && Number(player.encrMove) !== 0 ? "true" : "false");
+        }
       } catch (err: any) {
         console.error("Auto-check self played failed:", err.message);
       }
@@ -88,8 +133,15 @@ export default function Commit({
     const checkOpponentPlayed = async () => {
       try {
         const opponentKey = whoAmI === "player1" ? "playerB" : "playerA";
-        const encrMove = gameDetails[opponentKey].encrMove;
+        const opponent = gameDetails[opponentKey];
-        setOpponentPlayed(Number(encrMove) !== 0 ? "true" : "false");
+        
+        if (isMinusOne && !isWithdrawPhase) {
+          setOpponentPlayed(opponent.hash1 && Number(opponent.hash1) !== 0 ? "true" : "false");
+        } else if (isMinusOne && isWithdrawPhase) {
+          setOpponentPlayed(opponent.wHash && Number(opponent.wHash) !== 0 ? "true" : "false");
+        } else {
+          setOpponentPlayed(opponent.encrMove && Number(opponent.encrMove) !== 0 ? "true" : "false");
+        }
       } catch (err: any) {
         console.error("Auto-check opponent played failed:", err.message);
       }
@@ -100,10 +152,22 @@ export default function Commit({
     // Check immediately on mount or when dependencies change
     const checkBothPlayed = async () => {
       try {
+        let res: boolean = false;
+        
+        if (isMinusOne && !isWithdrawPhase) {
+          const playerAHash = gameDetails.playerA.hash1;
+          const playerBHash = gameDetails.playerB.hash1;
+          res = !!(playerAHash && playerBHash && Number(playerAHash) !== 0 && Number(playerBHash) !== 0);
+        } else if (isMinusOne && isWithdrawPhase) {
+          const playerAWHash = gameDetails.playerA.wHash;
+          const playerBWHash = gameDetails.playerB.wHash;
+          res = !!(playerAWHash && playerBWHash && Number(playerAWHash) !== 0 && Number(playerBWHash) !== 0);
+        } else {
           const playerAEncrMove = gameDetails.playerA.encrMove;
           const playerBEncrMove = gameDetails.playerB.encrMove;
+          res = !!(playerAEncrMove && playerBEncrMove && Number(playerAEncrMove) !== 0 && Number(playerBEncrMove) !== 0);
+        }
         
-        const res = Number(playerAEncrMove) !== 0 && Number(playerBEncrMove) !== 0;
         console.log("Both played check:", res);
         if (res) {
           setBothPlayed("true");
@@ -118,7 +182,14 @@ export default function Commit({
     // Check commit timeout
     const checkCommitTimeout = async () => {
       try {
-        const timeLeft = await contract.methods.commitTimeLeft(gameDetails.returnGameId).call();
+        let timeLeft;
+        if (isMinusOne) {
+          // MinusOne uses getTimeLeft() for all phases
+          timeLeft = await contract.methods.getTimeLeft(gameDetails.returnGameId).call();
+        } else {
+          // Classic uses commitTimeLeft()
+          timeLeft = await contract.methods.commitTimeLeft(gameDetails.returnGameId).call();
+        }
         console.log("Commit time left:", timeLeft);
         setCommitTimeLeft(Number(timeLeft));
         if (Number(timeLeft) <= 0) {
@@ -145,11 +216,35 @@ export default function Commit({
 
   // Commit phase read-only handlers
   const handlePlay = async () => {
-    if (!contract || !web3 || !account || !playMove) return;
+    if (!contract || !web3 || !account) return;
+    
     setLoading(true);
     try {
-      // playMove should be a hex string (bytes32)
+      let tx;
-      const tx = contract.methods.play(gameDetails?.returnGameId, playMove);
+      
+      if (isMinusOne && !isWithdrawPhase) {
+        // MinusOne initial commit: commitInitialMoves(gameId, hash1, hash2)
+        if (!playMove1 || !playMove2) {
+          showToast("Please select both moves and enter secrets", "error");
+          return;
+        }
+        tx = contract.methods.commitInitialMoves(gameDetails?.returnGameId, playMove1, playMove2);
+      } else if (isMinusOne && isWithdrawPhase) {
+        // MinusOne withdrawal commit: commitWithdraw(gameId, wHash)
+        if (!playMove) {
+          showToast("Please select withdrawal choice and enter secret", "error");
+          return;
+        }
+        tx = contract.methods.commitWithdraw(gameDetails?.returnGameId, playMove);
+      } else {
+        // Classic mode: play(gameId, hash)
+        if (!playMove) {
+          showToast("Please select a move and enter secret", "error");
+          return;
+        }
+        tx = contract.methods.play(gameDetails?.returnGameId, playMove);
+      }
+      
       const gas = await tx.estimateGas({ from: account });
       const result = await (globalThis as any).ethereum.request({
         method: "eth_sendTransaction",
@@ -163,10 +258,10 @@ export default function Commit({
           },
         ],
       });
-      showToast("Play tx sent: " + result, "success");
+      showToast("Commit tx sent: " + result, "success");
       setMoveSubmitted(true);
     } catch (err: any) {
-      showToast("Play failed: " + err.message, "error");
+      showToast("Commit failed: " + err.message, "error");
     } finally {
       setLoading(false);
     }
@@ -174,17 +269,44 @@ export default function Commit({
 
   const regenerateSecret = () => {
     const randomHex = Math.random().toString(16).slice(2, 18);
+    if (isMinusOne && !isWithdrawPhase) {
+      // For MinusOne, we might want separate secrets
+      // For now, let's keep them simple
+      setSecret1?.(randomHex);
+    } else {
       setSecret(randomHex);
+    }
+  };
+  
+  const regenerateSecret2 = () => {
+    const randomHex = Math.random().toString(16).slice(2, 18);
+    setSecret2?.(randomHex);
   };
 
   const handleSecretChange = (value: string) => {
     setSecret(value);
   };
   
+  const handleSecret1Change = (value: string) => {
+    setSecret1?.(value);
+  };
+  
+  const handleSecret2Change = (value: string) => {
+    setSecret2?.(value);
+  };
+
   const handleMoveSelect = (move: string) => {
     setSelectedMove(move);
   };
   
+  const handleMove1Select = (move: string) => {
+    setSelectedMove1?.(move);
+  };
+  
+  const handleMove2Select = (move: string) => {
+    setSelectedMove2?.(move);
+  };
+
   const handleResolveTimeout = async () => {
     if (!contract || !web3 || !account) return;
     setLoading(true);
@@ -331,7 +453,171 @@ export default function Commit({
                 </div>
               ) : (
                 <>
-                  {/* Move Selection */}
+                  {/* Move Selection - Different UI for MinusOne vs Classic */}
+                  {isMinusOne && !isWithdrawPhase ? (
+                    // MinusOne Mode: Select TWO different moves
+                    <>
+                      <div className="mb-6">
+                        <p className="text-sm text-slate-600 dark:text-slate-300 mb-4 font-medium">
+                          Choose your FIRST move:
+                        </p>
+                        <div className="flex gap-4 justify-center">
+                          {(["1", "2", "3"] as const).map((move) => (
+                            <button
+                              key={move}
+                              onClick={() => handleMove1Select(move)}
+                              disabled={selectedMove2 === move}
+                              className={`flex flex-col items-center justify-center p-6 rounded-lg transition-all transform ${
+                                selectedMove1 === move
+                                  ? "bg-blue-500 text-white shadow-lg scale-110"
+                                  : selectedMove2 === move
+                                  ? "bg-slate-300 dark:bg-slate-600 text-slate-400 dark:text-slate-500 cursor-not-allowed"
+                                  : "bg-white dark:bg-slate-600 text-slate-700 dark:text-slate-200 shadow hover:shadow-md hover:scale-105"
+                              }`}
+                            >
+                              <span className="text-5xl mb-2">{MOVES[move].icon}</span>
+                              <span className="font-semibold text-sm">{MOVES[move].name}</span>
+                            </button>
+                          ))}
+                        </div>
+                      </div>
+
+                      <div className="mb-6 bg-white dark:bg-slate-700 p-4 rounded-lg">
+                        <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-3">
+                          Secret for first move:
+                        </label>
+                        <div className="flex gap-2">
+                          <Input
+                            type="text"
+                            value={secret1 || ""}
+                            onChange={(e) => handleSecret1Change(e.target.value)}
+                            placeholder="Your secret passphrase"
+                            className="flex-1"
+                          />
+                          <Button
+                            onClick={regenerateSecret}
+                            variant="secondary"
+                            disabled={loading}
+                          >
+                            🔄 New
+                          </Button>
+                        </div>
+                      </div>
+
+                      <div className="mb-6">
+                        <p className="text-sm text-slate-600 dark:text-slate-300 mb-4 font-medium">
+                          Choose your SECOND move (must be different):
+                        </p>
+                        <div className="flex gap-4 justify-center">
+                          {(["1", "2", "3"] as const).map((move) => (
+                            <button
+                              key={move}
+                              onClick={() => handleMove2Select(move)}
+                              disabled={selectedMove1 === move}
+                              className={`flex flex-col items-center justify-center p-6 rounded-lg transition-all transform ${
+                                selectedMove2 === move
+                                  ? "bg-green-500 text-white shadow-lg scale-110"
+                                  : selectedMove1 === move
+                                  ? "bg-slate-300 dark:bg-slate-600 text-slate-400 dark:text-slate-500 cursor-not-allowed"
+                                  : "bg-white dark:bg-slate-600 text-slate-700 dark:text-slate-200 shadow hover:shadow-md hover:scale-105"
+                              }`}
+                            >
+                              <span className="text-5xl mb-2">{MOVES[move].icon}</span>
+                              <span className="font-semibold text-sm">{MOVES[move].name}</span>
+                            </button>
+                          ))}
+                        </div>
+                      </div>
+
+                      <div className="mb-8 bg-white dark:bg-slate-700 p-4 rounded-lg">
+                        <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-3">
+                          Secret for second move:
+                        </label>
+                        <div className="flex gap-2">
+                          <Input
+                            type="text"
+                            value={secret2 || ""}
+                            onChange={(e) => handleSecret2Change(e.target.value)}
+                            placeholder="Your secret passphrase"
+                            className="flex-1"
+                          />
+                          <Button
+                            onClick={regenerateSecret2}
+                            variant="secondary"
+                            disabled={loading}
+                          >
+                            🔄 New
+                          </Button>
+                        </div>
+                        <p className="text-xs text-slate-500 dark:text-slate-400 mt-2">
+                          Keep both secrets safe! You'll need them to reveal your moves later.
+                        </p>
+                      </div>
+                    </>
+                  ) : isWithdrawPhase ? (
+                    // Withdrawal Phase: Choose which move to withdraw (1 or 2)
+                    <>
+                      <div className="mb-6 p-4 bg-yellow-50 dark:bg-yellow-900 border-2 border-yellow-300 dark:border-yellow-700 rounded-lg">
+                        <p className="text-yellow-800 dark:text-yellow-200 text-sm mb-2 font-medium">
+                          🎯 Withdrawal Phase
+                        </p>
+                        <p className="text-yellow-700 dark:text-yellow-300 text-sm">
+                          Choose which move to WITHDRAW (1 or 2). The remaining move will be used in the final battle!
+                        </p>
+                      </div>
+                      <div className="mb-6">
+                        <p className="text-sm text-slate-600 dark:text-slate-300 mb-4 font-medium">
+                          Which move do you want to withdraw?
+                        </p>
+                        <div className="flex gap-4 justify-center">
+                          {(["1", "2"] as const).map((choice) => (
+                            <button
+                              key={choice}
+                              onClick={() => handleMoveSelect(choice)}
+                              className={`flex flex-col items-center justify-center p-8 rounded-lg transition-all transform ${
+                                selectedMove === choice
+                                  ? "bg-red-500 text-white shadow-lg scale-110"
+                                  : "bg-white dark:bg-slate-600 text-slate-700 dark:text-slate-200 shadow hover:shadow-md hover:scale-105"
+                              }`}
+                            >
+                              <span className="text-6xl mb-2">{choice === "1" ? "1️⃣" : "2️⃣"}</span>
+                              <span className="font-semibold">Withdraw Move {choice}</span>
+                              <span className="text-xs mt-1 opacity-75">
+                                {choice === "1" ? "Keep move 2" : "Keep move 1"}
+                              </span>
+                            </button>
+                          ))}
+                        </div>
+                      </div>
+
+                      <div className="mb-8 bg-white dark:bg-slate-700 p-4 rounded-lg">
+                        <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-3">
+                          Secret for withdrawal:
+                        </label>
+                        <div className="flex gap-2">
+                          <Input
+                            type="text"
+                            value={secret}
+                            onChange={(e) => handleSecretChange(e.target.value)}
+                            placeholder="Your secret passphrase"
+                            className="flex-1"
+                          />
+                          <Button
+                            onClick={regenerateSecret}
+                            variant="secondary"
+                            disabled={loading}
+                          >
+                            🔄 New
+                          </Button>
+                        </div>
+                        <p className="text-xs text-slate-500 dark:text-slate-400 mt-2">
+                          This secret is for your withdrawal choice. Keep it safe!
+                        </p>
+                      </div>
+                    </>
+                  ) : (
+                    // Classic Mode: Select ONE move
+                    <>
                       <div className="mb-8">
                         <p className="text-sm text-slate-600 dark:text-slate-300 mb-4 font-medium">
                           Choose your move:
@@ -379,28 +665,52 @@ export default function Commit({
                           Keep this secret safe! It's needed to reveal your move later.
                         </p>
                       </div>
+                    </>
+                  )}
 
                   {/* Encrypted Move Display */}
                   <div className="mb-8 bg-blue-50 dark:bg-blue-900 p-4 rounded-lg">
                     <label className="block text-sm font-medium text-slate-700 dark:text-blue-200 mb-2">
-                      Encrypted Move (to be sent):
+                      {isMinusOne && !isWithdrawPhase ? "Encrypted Moves (to be sent):" : "Encrypted Move (to be sent):"}
                     </label>
-                    <div className="bg-white dark:bg-slate-700 p-3 rounded border border-blue-200 dark:border-blue-700 overflow-x-auto">
+                    {isMinusOne && !isWithdrawPhase ? (
+                      <>
+                        <div className="bg-white dark:bg-slate-700 p-3 rounded border border-blue-200 dark:border-blue-700 overflow-x-auto mb-2">
+                          <p className="text-xs text-slate-500 dark:text-slate-400 mb-1">Move 1:</p>
                           <code className="text-xs text-slate-600 dark:text-slate-300 font-mono break-all">
-                        {playMove || "Select a move and enter a secret"}
+                            {playMove1 || "Select first move and enter secret"}
                           </code>
                         </div>
+                        <div className="bg-white dark:bg-slate-700 p-3 rounded border border-green-200 dark:border-green-700 overflow-x-auto">
+                          <p className="text-xs text-slate-500 dark:text-slate-400 mb-1">Move 2:</p>
+                          <code className="text-xs text-slate-600 dark:text-slate-300 font-mono break-all">
+                            {playMove2 || "Select second move and enter secret"}
+                          </code>
+                        </div>
+                      </>
+                    ) : (
+                      <div className="bg-white dark:bg-slate-700 p-3 rounded border border-blue-200 dark:border-blue-700 overflow-x-auto">
+                        <code className="text-xs text-slate-600 dark:text-slate-300 font-mono break-all">
+                          {playMove || "Select a move/choice and enter a secret"}
+                        </code>
+                      </div>
+                    )}
                   </div>
 
                   {/* Action Buttons */}
                   <div className="flex flex-col gap-3">
                     <Button
                       onClick={handlePlay}
-                      disabled={loading || !account || !contract || !selectedMove || !secret}
+                      disabled={
+                        loading || 
+                        !account || 
+                        !contract || 
+                        (isMinusOne && !isWithdrawPhase ? (!selectedMove1 || !selectedMove2 || !secret1 || !secret2) : (!selectedMove || !secret))
+                      }
                       variant="primary"
                       className="w-full py-3 text-lg"
                     >
-                      {loading ? "Submitting..." : "Submit Move"}
+                      {loading ? "Submitting..." : isWithdrawPhase ? "Submit Withdrawal Choice" : "Submit Move"}
                     </Button>
                   </div>
                 </>

crypto_clash_frontend/app/clash/GameList.tsx

@@ -181,6 +181,32 @@ export default function GameList({
   };
 
   const getGamePhase = (game: GameDetails) => {
+    const isMinusOne = game.gameMode === "minusone";
+    
+    if (isMinusOne) {
+      // MinusOne game phases
+      const playerARevealed1 = Number(game.playerA.move1) !== 0;
+      const playerBRevealed1 = Number(game.playerB.move1) !== 0;
+      const playerAWithdrawn = Number(game.playerA.withdrawn) !== 0;
+      const playerBWithdrawn = Number(game.playerB.withdrawn) !== 0;
+      const playerACommitted1 = Number(game.playerA.hash1) !== 0;
+      const playerBCommitted1 = Number(game.playerB.hash1) !== 0;
+      const playerACommittedW = Number(game.playerA.wHash) !== 0;
+      const playerBCommittedW = Number(game.playerB.wHash) !== 0;
+      
+      if (playerAWithdrawn && playerBWithdrawn) {
+        return { phase: "Done", color: "bg-purple-100 dark:bg-purple-900 text-purple-800 dark:text-purple-200" };
+      } else if (playerACommittedW && playerBCommittedW) {
+        return { phase: "Withdraw Reveal", color: "bg-orange-100 dark:bg-orange-900 text-orange-800 dark:text-orange-200" };
+      } else if (playerARevealed1 && playerBRevealed1) {
+        return { phase: "Withdraw Commit", color: "bg-amber-100 dark:bg-amber-900 text-amber-800 dark:text-amber-200" };
+      } else if (playerACommitted1 && playerBCommitted1) {
+        return { phase: "Initial Reveal", color: "bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200" };
+      } else {
+        return { phase: "Initial Commit", color: "bg-yellow-100 dark:bg-yellow-900 text-yellow-800 dark:text-yellow-200" };
+      }
+    } else {
+      // Classic game phases
       const playerARevealed = Number(game.playerA.move) !== 0;
       const playerBRevealed = Number(game.playerB.move) !== 0;
       const playerACommitted = Number(game.playerA.encrMove) !== 0;
@@ -193,6 +219,7 @@ export default function GameList({
       } else {
         return { phase: "Commit", color: "bg-yellow-100 dark:bg-yellow-900 text-yellow-800 dark:text-yellow-200" };
       }
+    }
   };
 
   return (

crypto_clash_frontend/app/clash/GameModal.tsx

@@ -9,8 +9,16 @@ import { showErrorToast } from "@/app/lib/toast";
 export type Player = {
     addr: string;
     bet: string;
-    encrMove: string;
+    // Classic mode fields
-    move: number;
+    encrMove?: string;
+    move?: number;
+    // MinusOne mode fields
+    hash1?: string;
+    hash2?: string;
+    move1?: number;
+    move2?: number;
+    wHash?: string;
+    withdrawn?: number;
     nickname: string;
 };
 
@@ -22,6 +30,7 @@ export type GameDetails = {
     isActive: boolean;
     returnGameId: number;
     gameMode?: string; // "classic" or "minusone"
+    phase?: number; // GamePhase for minusone mode
 };
 
 interface GameModalProps {
@@ -45,20 +54,38 @@ export default function GameModal({
   web3,
   setStatus,
 }: Readonly<GameModalProps>) {
-  const [phase, setPhase] = useState<"commit" | "reveal">("commit");
+  const [phase, setPhase] = useState<"commit" | "reveal" | "withdrawCommit" | "withdrawReveal">("commit");
   const [whoAmI, setWhoAmI] = useState<"player1" | "player2" | "">("");
   const [gameDetails, setGameDetails] = useState<GameDetails | null>(null);
+  
+  // Classic mode state
   const [selectedMove, setSelectedMove] = useState<string | null>(null);
   const [secret, setSecret] = useState<string>("");
   
+  // MinusOne mode state
+  const [selectedMove1, setSelectedMove1] = useState<string | null>(null);
+  const [selectedMove2, setSelectedMove2] = useState<string | null>(null);
+  const [secret1, setSecret1] = useState<string>("");
+  const [secret2, setSecret2] = useState<string>("");
+  const [withdrawChoice, setWithdrawChoice] = useState<string | null>(null);
+  const [withdrawSecret, setWithdrawSecret] = useState<string>("");
+
   // Helper function to generate game-specific storage key
   const getGameStorageKey = () => `game_${gameDetails?.returnGameId}`;
 
   // Game storage object structure
   type GameStorage = {
-    secret: string;
+    // Classic mode
-    selectedMove: string | null;
+    secret?: string;
-    playMove: string;
+    selectedMove?: string | null;
+    playMove?: string;
+    // MinusOne mode
+    secret1?: string;
+    secret2?: string;
+    selectedMove1?: string | null;
+    selectedMove2?: string | null;
+    withdrawChoice?: string | null;
+    withdrawSecret?: string;
     timestamp?: number;
   };
 
@@ -101,8 +128,16 @@ export default function GameModal({
     if (storedData) {
       try {
         const parsed: GameStorage = JSON.parse(storedData);
+        // Classic mode
         if (parsed.secret) setSecret(parsed.secret);
         if (parsed.selectedMove) setSelectedMove(parsed.selectedMove);
+        // MinusOne mode
+        if (parsed.secret1) setSecret1(parsed.secret1);
+        if (parsed.secret2) setSecret2(parsed.secret2);
+        if (parsed.selectedMove1) setSelectedMove1(parsed.selectedMove1);
+        if (parsed.selectedMove2) setSelectedMove2(parsed.selectedMove2);
+        if (parsed.withdrawChoice) setWithdrawChoice(parsed.withdrawChoice);
+        if (parsed.withdrawSecret) setWithdrawSecret(parsed.withdrawSecret);
       } catch (err) {
         console.error("Failed to parse stored game data:", err);
       }
@@ -111,7 +146,7 @@ export default function GameModal({
 
   const saveGameData = (updates: Partial<GameStorage>) => {
     const storedData = sessionStorage.getItem(getGameStorageKey());
-    let currentData: GameStorage = { secret: "", selectedMove: null, playMove: "", timestamp: Date.now() };
+    let currentData: GameStorage = { timestamp: Date.now() };
     
     if (storedData) {
       try {
@@ -125,6 +160,7 @@ export default function GameModal({
     sessionStorage.setItem(getGameStorageKey(), JSON.stringify(updatedData));
   };
 
+  // Classic mode save functions
   const saveSecret = (value: string) => {
     setSecret(value);
     saveGameData({ secret: value });
@@ -141,6 +177,43 @@ export default function GameModal({
     saveGameData({ playMove });
   };
 
+  // MinusOne mode save functions
+  const saveSecret1 = (value: string) => {
+    setSecret1(value);
+    saveGameData({ secret1: value });
+  };
+
+  const saveSecret2 = (value: string) => {
+    setSecret2(value);
+    saveGameData({ secret2: value });
+  };
+
+  const saveMoveSelection1 = (move: string | null) => {
+    setSelectedMove1(move);
+    if (move !== null) {
+      saveGameData({ selectedMove1: move });
+    }
+  };
+
+  const saveMoveSelection2 = (move: string | null) => {
+    setSelectedMove2(move);
+    if (move !== null) {
+      saveGameData({ selectedMove2: move });
+    }
+  };
+
+  const saveWithdrawChoice = (choice: string | null) => {
+    setWithdrawChoice(choice);
+    if (choice !== null) {
+      saveGameData({ withdrawChoice: choice });
+    }
+  };
+
+  const saveWithdrawSecret = (value: string) => {
+    setWithdrawSecret(value);
+    saveGameData({ withdrawSecret: value });
+  };
+
 
   useEffect(() => {
     const fetchPlayerInfo = async () => {
@@ -163,11 +236,31 @@ export default function GameModal({
           console.log("Game details:", details);
           setGameDetails(details);
           
-          // Determine the correct phase based on game state
+          // Determine game mode
-          const playerAHasMove = Number(details.playerA.encrMove) !== 0;
+          const isMinusOne = details.gameMode === "minusone";
-          const playerBHasMove = Number(details.playerB.encrMove) !== 0;
+          
-          const playerARevealed = Number(details.playerA.move) !== 0;
+          if (isMinusOne) {
-          const playerBRevealed = Number(details.playerB.move) !== 0;
+            // MinusOne mode: use phase enum
+            // GamePhase enum: Reg=0, InitC=1, FirstR=2, WithdC=3, WithdR=4, Done=5
+            const gamePhase = Number(details.phase);
+            
+            if (gamePhase === 5) { // Done
+              setPhase("reveal"); // Show final results
+            } else if (gamePhase === 4) { // WithdR
+              setPhase("withdrawReveal");
+            } else if (gamePhase === 3) { // WithdC
+              setPhase("withdrawCommit");
+            } else if (gamePhase === 2) { // FirstR
+              setPhase("reveal");
+            } else { // InitC or Reg
+              setPhase("commit");
+            }
+          } else {
+            // Classic mode: check encrMove and move fields
+            const playerAHasMove = details.playerA.encrMove && Number(details.playerA.encrMove) !== 0;
+            const playerBHasMove = details.playerB.encrMove && Number(details.playerB.encrMove) !== 0;
+            const playerARevealed = details.playerA.move && Number(details.playerA.move) !== 0;
+            const playerBRevealed = details.playerB.move && Number(details.playerB.move) !== 0;
             
             // If both players have revealed their moves, show reveal phase (with results)
             if (playerARevealed && playerBRevealed) {
@@ -181,6 +274,7 @@ export default function GameModal({
             else {
               setPhase("commit");
             }
+          }
         } catch (err: any) {
           showErrorToast("Error fetching game details: " + err.message);
         }
@@ -218,6 +312,12 @@ export default function GameModal({
     setPhase("commit");
     setSelectedMove(null);
     setSecret("");
+    setSelectedMove1(null);
+    setSelectedMove2(null);
+    setSecret1("");
+    setSecret2("");
+    setWithdrawChoice(null);
+    setWithdrawSecret("");
     onClose();
   };
 
@@ -234,9 +334,10 @@ export default function GameModal({
               {gameId ? `Game #${gameId}` : "Game"}
             </h2>
             <p className="text-sm text-slate-600 dark:text-slate-400 mt-1">
-              {phase === "commit"
+              {phase === "commit" && "Commit your move"}
-                ? "Commit your move"
+              {phase === "reveal" && "Reveal your move"}
-                : "Reveal your move"}
+              {phase === "withdrawCommit" && "Choose which move to withdraw"}
+              {phase === "withdrawReveal" && "Reveal your withdrawal choice"}
             </p>
           </div>
           <button
@@ -266,6 +367,15 @@ export default function GameModal({
                 secret={secret}
                 setSecret={saveSecret}
                 savePlayMove={savePlayMove}
+                // MinusOne mode props
+                selectedMove1={selectedMove1}
+                setSelectedMove1={saveMoveSelection1}
+                selectedMove2={selectedMove2}
+                setSelectedMove2={saveMoveSelection2}
+                secret1={secret1}
+                setSecret1={saveSecret1}
+                secret2={secret2}
+                setSecret2={saveSecret2}
               />
             )}
             {phase === "reveal" && (
@@ -279,6 +389,42 @@ export default function GameModal({
                 secret={secret}
                 gameDetails={gameDetails}
                 whoAmI={whoAmI}
+                // MinusOne mode props
+                selectedMove1={selectedMove1}
+                selectedMove2={selectedMove2}
+                secret1={secret1}
+                secret2={secret2}
+              />
+            )}
+            {phase === "withdrawCommit" && (
+              <Commit
+                account={account}
+                contract={contract}
+                config={config}
+                web3={web3}
+                whoAmI={whoAmI}
+                gameDetails={gameDetails}
+                setStatus={setStatus}
+                selectedMove={withdrawChoice}
+                setSelectedMove={saveWithdrawChoice}
+                secret={withdrawSecret}
+                setSecret={saveWithdrawSecret}
+                savePlayMove={() => {}}
+                isWithdrawPhase={true}
+              />
+            )}
+            {phase === "withdrawReveal" && (
+              <Reveal
+                account={account}
+                contract={contract}
+                config={config}
+                web3={web3}
+                setStatus={setStatus}
+                selectedMove={withdrawChoice}
+                secret={withdrawSecret}
+                gameDetails={gameDetails}
+                whoAmI={whoAmI}
+                isWithdrawPhase={true}
               />
             )}
           </div>

crypto_clash_frontend/app/clash/Reveal.tsx

@@ -14,6 +14,12 @@ interface RevealProps {
   secret: string;
   gameDetails: GameDetails | null;
   whoAmI: "player1" | "player2" | "";
+  // MinusOne mode props
+  selectedMove1?: string | null;
+  selectedMove2?: string | null;
+  secret1?: string;
+  secret2?: string;
+  isWithdrawPhase?: boolean;
 }
 
 type MoveName = "Rock" | "Paper" | "Scissors";
@@ -42,6 +48,11 @@ export default function Reveal({
   secret,
   gameDetails,
   whoAmI,
+  selectedMove1,
+  selectedMove2,
+  secret1,
+  secret2,
+  isWithdrawPhase = false,
 }: Readonly<RevealProps>) {
   const [loading, setLoading] = useState(false);
   const [selfRevealed, setSelfRevealed] = useState(false);
@@ -51,14 +62,59 @@ export default function Reveal({
   const [revealTimeLeft, setRevealTimeLeft] = useState<number>(0);
   const [timeoutExpired, setTimeoutExpired] = useState(false);
 
+  const isMinusOne = gameDetails?.gameMode === "minusone";
+  
+  // Generate clear text for reveal
   const clearMove = selectedMove && secret ? `${selectedMove}-${secret}` : "";
+  const clearMove1 = selectedMove1 && secret1 ? `${selectedMove1}-${secret1}` : "";
+  const clearMove2 = selectedMove2 && secret2 ? `${selectedMove2}-${secret2}` : "";
 
   // Check game status on mount
   useEffect(() => {
     const setStateFromGameDetails = () => {
       if (!gameDetails) return;
-      const playerARevealed = Number(gameDetails.playerA.move) !== 0;
+      
-      const playerBRevealed = Number(gameDetails.playerB.move) !== 0;
+      if (isMinusOne && !isWithdrawPhase) {
+        // MinusOne initial reveal: check move1
+        const playerARevealed = !!(gameDetails.playerA.move1 && Number(gameDetails.playerA.move1) !== 0);
+        const playerBRevealed = !!(gameDetails.playerB.move1 && Number(gameDetails.playerB.move1) !== 0);
+
+        setSelfRevealed(
+          (whoAmI === "player1" && playerARevealed) ||
+          (whoAmI === "player2" && playerBRevealed)
+        );
+        setOpponentRevealed(
+          (whoAmI === "player1" && playerBRevealed) ||
+          (whoAmI === "player2" && playerARevealed)
+        );
+        setBothRevealed(playerARevealed && playerBRevealed);
+      } else if (isMinusOne && isWithdrawPhase) {
+        // MinusOne withdrawal reveal: check withdrawn field
+        const playerARevealed = !!(gameDetails.playerA.withdrawn && Number(gameDetails.playerA.withdrawn) !== 0);
+        const playerBRevealed = !!(gameDetails.playerB.withdrawn && Number(gameDetails.playerB.withdrawn) !== 0);
+
+        setSelfRevealed(
+          (whoAmI === "player1" && playerARevealed) ||
+          (whoAmI === "player2" && playerBRevealed)
+        );
+        setOpponentRevealed(
+          (whoAmI === "player1" && playerBRevealed) ||
+          (whoAmI === "player2" && playerARevealed)
+        );
+        setBothRevealed(playerARevealed && playerBRevealed);
+        
+        // Set outcome when both revealed withdrawal
+        if(bothRevealed){
+          if(Number(gameDetails.outcome) === 1 && whoAmI === "player1") setOutcome(1);
+          else if(Number(gameDetails.outcome) === 2 && whoAmI === "player2") setOutcome(1);
+          else if(Number(gameDetails.outcome) === 1 && whoAmI === "player2") setOutcome(2);
+          else if(Number(gameDetails.outcome) === 2 && whoAmI === "player1") setOutcome(2);
+          else if(Number(gameDetails.outcome) === 3) setOutcome(3);
+        }
+      } else {
+        // Classic mode: check move field
+        const playerARevealed = !!(gameDetails.playerA.move && Number(gameDetails.playerA.move) !== 0);
+        const playerBRevealed = !!(gameDetails.playerB.move && Number(gameDetails.playerB.move) !== 0);
 
         setSelfRevealed(
           (whoAmI === "player1" && playerARevealed) ||
@@ -76,6 +132,7 @@ export default function Reveal({
           else if(Number(gameDetails.outcome) === 2 && whoAmI === "player1") setOutcome(2);
           else setOutcome(3);
         }
+      }
     };
 
     setStateFromGameDetails();
@@ -84,7 +141,14 @@ export default function Reveal({
     const checkRevealTimeout = async () => {
       if (!contract || !gameDetails) return;
       try {
-        const timeLeft = await contract.methods.revealTimeLeft(gameDetails.returnGameId).call();
+        let timeLeft;
+        if (isMinusOne) {
+          // MinusOne uses getTimeLeft() for all phases
+          timeLeft = await contract.methods.getTimeLeft(gameDetails.returnGameId).call();
+        } else {
+          // Classic uses revealTimeLeft()
+          timeLeft = await contract.methods.revealTimeLeft(gameDetails.returnGameId).call();
+        }
         setRevealTimeLeft(Number(timeLeft));
         if (Number(timeLeft) <= 0) {
           setTimeoutExpired(true);
@@ -101,10 +165,38 @@ export default function Reveal({
   }, [gameDetails, contract, account, whoAmI]);
 
   const handleReveal = async () => {
-    if (!contract || !web3 || !account || !clearMove) return;
+    if (!contract || !web3 || !account) return;
+    
     setLoading(true);
     try {
-      const tx = contract.methods.reveal(gameDetails?.returnGameId, clearMove);
+      let tx;
+      
+      if (isMinusOne && !isWithdrawPhase) {
+        // MinusOne initial reveal: revealInitialMoves(gameId, clear1, clear2)
+        if (!clearMove1 || !clearMove2) {
+          showErrorToast("Please provide both cleartext moves");
+          setLoading(false);
+          return;
+        }
+        tx = contract.methods.revealInitialMoves(gameDetails?.returnGameId, clearMove1, clearMove2);
+      } else if (isMinusOne && isWithdrawPhase) {
+        // MinusOne withdrawal reveal: withdrawMove(gameId, clear)
+        if (!clearMove) {
+          showErrorToast("Please provide cleartext withdrawal choice");
+          setLoading(false);
+          return;
+        }
+        tx = contract.methods.withdrawMove(gameDetails?.returnGameId, clearMove);
+      } else {
+        // Classic mode: reveal(gameId, clear)
+        if (!clearMove) {
+          showErrorToast("Please provide cleartext move");
+          setLoading(false);
+          return;
+        }
+        tx = contract.methods.reveal(gameDetails?.returnGameId, clearMove);
+      }
+      
       const gas = await tx.estimateGas({ from: account });
       const result = await (globalThis as any).ethereum.request({
         method: "eth_sendTransaction",
@@ -244,29 +336,66 @@ export default function Reveal({
           {!bothRevealed && !timeoutExpired && (
             <div className="border p-6 rounded-lg bg-gradient-to-br from-slate-50 to-slate-100 dark:from-slate-700 dark:to-slate-800">
               <h2 className="font-semibold text-lg mb-4 text-slate-900 dark:text-white">
-                Your Move
+                {isWithdrawPhase ? "Your Withdrawal Choice" : isMinusOne ? "Your Moves" : "Your Move"}
               </h2>
-              {selectedMove ? (
+              {isMinusOne && !isWithdrawPhase && selectedMove1 && selectedMove2 ? (
+                <div className="space-y-4">
+                  <div className="flex items-center justify-center gap-4 p-3 bg-blue-50 dark:bg-blue-900 rounded-lg">
+                    <div className="flex flex-col items-center">
+                      <span className="text-xs text-slate-500 dark:text-slate-400 mb-1">Move 1</span>
+                      <span className="text-5xl mb-2">{MOVES[selectedMove1].icon}</span>
+                      <span className="font-semibold text-sm">{MOVES[selectedMove1].name}</span>
+                    </div>
+                    <div className="text-2xl text-slate-400">→</div>
+                    <div className="bg-white dark:bg-slate-600 p-3 rounded-lg flex-1">
+                      <p className="text-xs text-slate-600 dark:text-slate-300 mb-1">Clear Text 1:</p>
+                      <code className="text-xs font-mono text-slate-700 dark:text-slate-200 break-all">
+                        {clearMove1}
+                      </code>
+                    </div>
+                  </div>
+                  <div className="flex items-center justify-center gap-4 p-3 bg-green-50 dark:bg-green-900 rounded-lg">
+                    <div className="flex flex-col items-center">
+                      <span className="text-xs text-slate-500 dark:text-slate-400 mb-1">Move 2</span>
+                      <span className="text-5xl mb-2">{MOVES[selectedMove2].icon}</span>
+                      <span className="font-semibold text-sm">{MOVES[selectedMove2].name}</span>
+                    </div>
+                    <div className="text-2xl text-slate-400">→</div>
+                    <div className="bg-white dark:bg-slate-600 p-3 rounded-lg flex-1">
+                      <p className="text-xs text-slate-600 dark:text-slate-300 mb-1">Clear Text 2:</p>
+                      <code className="text-xs font-mono text-slate-700 dark:text-slate-200 break-all">
+                        {clearMove2}
+                      </code>
+                    </div>
+                  </div>
+                </div>
+              ) : isWithdrawPhase && selectedMove ? (
                 <div className="flex items-center justify-center gap-4">
                   <div className="flex flex-col items-center">
-                    <span className="text-6xl mb-2">{MOVES[selectedMove].icon}</span>
+                    <span className="text-6xl mb-2">{selectedMove === "1" ? "1️⃣" : "2️⃣"}</span>
-                    <span className="font-semibold text-lg">
+                    <span className="font-semibold text-lg">Withdraw Move {selectedMove}</span>
-                      {MOVES[selectedMove].name}
-                    </span>
                   </div>
                   <div className="text-3xl text-slate-400">→</div>
                   <div className="bg-white dark:bg-slate-600 p-4 rounded-lg">
-                    <p className="text-xs text-slate-600 dark:text-slate-300 mb-1">
+                    <p className="text-xs text-slate-600 dark:text-slate-300 mb-1">Clear Text:</p>
-                      Clear Move:
+                    <code className="text-sm font-mono text-slate-700 dark:text-slate-200">{clearMove}</code>
-                    </p>
+                  </div>
-                    <code className="text-sm font-mono text-slate-700 dark:text-slate-200">
+                </div>
-                      {clearMove}
+              ) : selectedMove ? (
-                    </code>
+                <div className="flex items-center justify-center gap-4">
+                  <div className="flex flex-col items-center">
+                    <span className="text-6xl mb-2">{MOVES[selectedMove].icon}</span>
+                    <span className="font-semibold text-lg">{MOVES[selectedMove].name}</span>
+                  </div>
+                  <div className="text-3xl text-slate-400">→</div>
+                  <div className="bg-white dark:bg-slate-600 p-4 rounded-lg">
+                    <p className="text-xs text-slate-600 dark:text-slate-300 mb-1">Clear Move:</p>
+                    <code className="text-sm font-mono text-slate-700 dark:text-slate-200">{clearMove}</code>
                   </div>
                 </div>
               ) : (
                 <p className="text-center text-slate-600 dark:text-slate-400">
-                  No move selected yet
+                  No {isWithdrawPhase ? "withdrawal choice" : "move"} selected yet
                 </p>
               )}
             </div>
@@ -349,19 +478,22 @@ export default function Reveal({
           {!bothRevealed && !timeoutExpired && (
             <div className="border-2 border-blue-300 dark:border-blue-600 p-6 rounded-lg bg-blue-50 dark:bg-slate-700">
               <h2 className="font-semibold text-lg mb-4 text-slate-900 dark:text-white">
-                Reveal Your Move
+                {isWithdrawPhase ? "Reveal Your Withdrawal" : isMinusOne ? "Reveal Your Moves" : "Reveal Your Move"}
               </h2>
               <p className="text-sm text-slate-600 dark:text-slate-300 mb-4">
-                Submit your clear move and secret to the blockchain. This proves you
+                {isWithdrawPhase 
-                didn't cheat!
+                  ? "Submit your clear withdrawal choice and secret to the blockchain."
+                  : isMinusOne
+                    ? "Submit your clear moves and secrets to the blockchain. This proves you didn't cheat!"
+                    : "Submit your clear move and secret to the blockchain. This proves you didn't cheat!"}
               </p>
               <Button
                 onClick={handleReveal}
-                disabled={loading || !account || !contract || !clearMove || selfRevealed}
+                disabled={loading || !account || !contract || (!clearMove && (!clearMove1 || !clearMove2)) || selfRevealed}
                 variant="primary"
                 className="w-full py-3 text-lg"
               >
-                {loading ? "Submitting..." : selfRevealed ? "✅ Revealed" : "Reveal Move"}
+                {loading ? "Submitting..." : selfRevealed ? "✅ Revealed" : isWithdrawPhase ? "Reveal Withdrawal" : "Reveal Move"}
               </Button>
             </div>
           )}
@@ -372,10 +504,100 @@ export default function Reveal({
               {/* Moves Comparison */}
               <div className="border-2 border-slate-300 dark:border-slate-600 p-6 rounded-lg bg-slate-50 dark:bg-slate-800">
                 <h2 className="font-semibold text-lg mb-4 text-slate-900 dark:text-white text-center">
-                  Final Moves
+                  {isMinusOne ? "Final Moves (After Withdrawal)" : "Final Moves"}
                 </h2>
+                
+                {isMinusOne && gameDetails ? (
+                  <div className="space-y-6">
+                    {/* Show all moves including withdrawn ones for MinusOne */}
                     <div className="flex items-center justify-center gap-8">
-                  {/* Your Move (always on left) */}
+                      {/* Your Moves */}
+                      <div className="flex flex-col items-center space-y-2">
+                        <span className="font-semibold text-slate-700 dark:text-slate-300 mb-2">You</span>
+                        <div className="flex gap-2">
+                          <div className={`flex flex-col items-center p-2 rounded ${
+                            (whoAmI === "player1" ? gameDetails.playerA.withdrawn : gameDetails.playerB.withdrawn) === 1 
+                              ? "opacity-40 bg-red-100 dark:bg-red-900" 
+                              : "bg-green-100 dark:bg-green-900"
+                          }`}>
+                            <span className="text-xs text-slate-500 dark:text-slate-400">Move 1</span>
+                            <span className="text-3xl">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerA.move1 : gameDetails.playerB.move1)]?.icon}
+                            </span>
+                            <span className="text-xs">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerA.move1 : gameDetails.playerB.move1)]?.name}
+                            </span>
+                            {(whoAmI === "player1" ? gameDetails.playerA.withdrawn : gameDetails.playerB.withdrawn) === 1 && (
+                              <span className="text-xs text-red-600 dark:text-red-400">Withdrawn</span>
+                            )}
+                          </div>
+                          <div className={`flex flex-col items-center p-2 rounded ${
+                            (whoAmI === "player1" ? gameDetails.playerA.withdrawn : gameDetails.playerB.withdrawn) === 2 
+                              ? "opacity-40 bg-red-100 dark:bg-red-900" 
+                              : "bg-green-100 dark:bg-green-900"
+                          }`}>
+                            <span className="text-xs text-slate-500 dark:text-slate-400">Move 2</span>
+                            <span className="text-3xl">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerA.move2 : gameDetails.playerB.move2)]?.icon}
+                            </span>
+                            <span className="text-xs">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerA.move2 : gameDetails.playerB.move2)]?.name}
+                            </span>
+                            {(whoAmI === "player1" ? gameDetails.playerA.withdrawn : gameDetails.playerB.withdrawn) === 2 && (
+                              <span className="text-xs text-red-600 dark:text-red-400">Withdrawn</span>
+                            )}
+                          </div>
+                        </div>
+                      </div>
+
+                      {/* VS */}
+                      <div className="flex flex-col items-center">
+                        <span className="text-4xl text-slate-400 dark:text-slate-500">VS</span>
+                      </div>
+
+                      {/* Opponent Moves */}
+                      <div className="flex flex-col items-center space-y-2">
+                        <span className="font-semibold text-slate-700 dark:text-slate-300 mb-2">Opponent</span>
+                        <div className="flex gap-2">
+                          <div className={`flex flex-col items-center p-2 rounded ${
+                            (whoAmI === "player1" ? gameDetails.playerB.withdrawn : gameDetails.playerA.withdrawn) === 1 
+                              ? "opacity-40 bg-red-100 dark:bg-red-900" 
+                              : "bg-green-100 dark:bg-green-900"
+                          }`}>
+                            <span className="text-xs text-slate-500 dark:text-slate-400">Move 1</span>
+                            <span className="text-3xl">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerB.move1 : gameDetails.playerA.move1)]?.icon}
+                            </span>
+                            <span className="text-xs">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerB.move1 : gameDetails.playerA.move1)]?.name}
+                            </span>
+                            {(whoAmI === "player1" ? gameDetails.playerB.withdrawn : gameDetails.playerA.withdrawn) === 1 && (
+                              <span className="text-xs text-red-600 dark:text-red-400">Withdrawn</span>
+                            )}
+                          </div>
+                          <div className={`flex flex-col items-center p-2 rounded ${
+                            (whoAmI === "player1" ? gameDetails.playerB.withdrawn : gameDetails.playerA.withdrawn) === 2 
+                              ? "opacity-40 bg-red-100 dark:bg-red-900" 
+                              : "bg-green-100 dark:bg-green-900"
+                          }`}>
+                            <span className="text-xs text-slate-500 dark:text-slate-400">Move 2</span>
+                            <span className="text-3xl">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerB.move2 : gameDetails.playerA.move2)]?.icon}
+                            </span>
+                            <span className="text-xs">
+                              {MOVES[String(whoAmI === "player1" ? gameDetails.playerB.move2 : gameDetails.playerA.move2)]?.name}
+                            </span>
+                            {(whoAmI === "player1" ? gameDetails.playerB.withdrawn : gameDetails.playerA.withdrawn) === 2 && (
+                              <span className="text-xs text-red-600 dark:text-red-400">Withdrawn</span>
+                            )}
+                          </div>
+                        </div>
+                      </div>
+                    </div>
+                  </div>
+                ) : (
+                  <div className="flex items-center justify-center gap-8">
+                    {/* Classic game - Your Move (always on left) */}
                     <div className="flex flex-col items-center">
                       <span className="text-6xl mb-2">
                         {gameDetails && MOVES[String(whoAmI === "player1" ? gameDetails.playerA.move : gameDetails.playerB.move)]?.icon}
@@ -395,7 +617,7 @@ export default function Reveal({
                       </span>
                     </div>
 
-                  {/* Opponent Move (always on right) */}
+                    {/* Classic game - Opponent Move (always on right) */}
                     <div className="flex flex-col items-center">
                       <span className="text-6xl mb-2">
                         {gameDetails && MOVES[String(whoAmI === "player1" ? gameDetails.playerB.move : gameDetails.playerA.move)]?.icon}
@@ -408,6 +630,7 @@ export default function Reveal({
                       </span>
                     </div>
                   </div>
+                )}
               </div>
 
               {/* Outcome Section */}

docs/DUAL_MODE_IMPLEMENTATION.md

@@ -0,0 +1,267 @@
+# Dual-Mode Frontend Implementation
+
+This document describes the frontend implementation that supports both Classic and Minus One game modes.
+
+## Overview
+
+The frontend has been updated to seamlessly work with two different smart contracts:
+- **Game.sol** (Classic Mode): Standard Rock-Paper-Scissors with 2 phases
+- **GameMinusOne.sol** (Minus One Mode): Squid Game-inspired variant with 6 phases
+
+## Game Modes Comparison
+
+### Classic Mode
+**Phases:**
+1. Commit Phase (both players submit encrypted moves)
+2. Reveal Phase (both players reveal their moves)
+
+**Functions:**
+- `register(gameId, nickname)` - Join/create game
+- `play(gameId, encrMove)` - Submit encrypted move
+- `reveal(gameId, clearMove)` - Reveal move
+- `commitTimeLeft()` / `revealTimeLeft()` - Check timeouts
+- `getOutcome(gameId)` - Get game result
+
+**Data Structure:**
+```typescript
+Player {
+  addr: string;
+  nickname: string;
+  encrMove?: string;  // Classic only
+  move?: string;      // Classic only
+}
+```
+
+### Minus One Mode
+**Phases:**
+1. Registration
+2. Initial Commit (both players commit 2 moves)
+3. First Reveal (reveal both moves)
+4. Withdraw Commit (commit which move to withdraw)
+5. Withdraw Reveal (reveal withdrawal choice)
+6. Done
+
+**Functions:**
+- `register(gameId, nickname)` - Join/create game
+- `commitInitialMoves(gameId, hash1, hash2)` - Submit 2 encrypted moves
+- `revealInitialMoves(gameId, clear1, clear2)` - Reveal both moves
+- `commitWithdraw(gameId, wHash)` - Submit withdrawal choice
+- `withdrawMove(gameId, clear)` - Reveal withdrawal
+- `getTimeLeft(gameId)` - Universal timeout checker
+- `getOutcome(gameId)` - Get game result
+
+**Data Structure:**
+```typescript
+Player {
+  addr: string;
+  nickname: string;
+  hash1?: string;      // MinusOne only
+  hash2?: string;      // MinusOne only
+  move1?: string;      // MinusOne only
+  move2?: string;      // MinusOne only
+  wHash?: string;      // MinusOne only
+  withdrawn?: string;  // MinusOne only (1 or 2)
+}
+```
+
+## Implementation Details
+
+### Type System
+The frontend uses optional fields to support both modes:
+
+```typescript
+interface Player {
+  addr: string;
+  nickname: string;
+  // Classic fields
+  encrMove?: string;
+  move?: string;
+  // MinusOne fields
+  hash1?: string;
+  hash2?: string;
+  move1?: string;
+  move2?: string;
+  wHash?: string;
+  withdrawn?: string;
+}
+
+interface GameDetails {
+  playerA: Player;
+  playerB: Player;
+  initialBet: string;
+  outcome: number;
+  isActive: boolean;
+  returnGameId: number;
+  gameMode?: string; // "classic" or "minusone"
+}
+```
+
+### Component Updates
+
+#### GameModal.tsx
+- **Purpose:** Manages game state and routes to correct phase component
+- **Changes:**
+  - Added `gameMode` field to GameDetails
+  - Phase detection logic checks `gameMode` and appropriate fields
+  - Storage structure expanded for MinusOne state (move1/2, secret1/2, withdrawChoice)
+
+#### Commit.tsx
+- **Purpose:** Handles all commit phases (move commits and withdrawal commits)
+- **Changes:**
+  - Added MinusOne-specific props: `selectedMove1`, `selectedMove2`, `secret1`, `secret2`, `withdrawChoice`
+  - Hash generation adapts based on mode:
+    - Classic: `keccak256(move-password)`
+    - MinusOne initial: Two hashes `keccak256(move1-password1)`, `keccak256(move2-password2)`
+    - MinusOne withdrawal: `keccak256(1-password)` or `keccak256(2-password)`
+  - UI conditionally renders:
+    - Classic: Single move selector
+    - MinusOne initial: Two move selectors with different colored borders
+    - MinusOne withdrawal: Choice between withdrawing move 1 or 2
+  - Contract calls:
+    - Classic: `play(gameId, encrMove)`
+    - MinusOne initial: `commitInitialMoves(gameId, hash1, hash2)`
+    - MinusOne withdrawal: `commitWithdraw(gameId, wHash)`
+
+#### Reveal.tsx
+- **Purpose:** Handles all reveal phases (move reveals and withdrawal reveals)
+- **Changes:**
+  - Added MinusOne-specific props: `selectedMove1`, `selectedMove2`, `secret1`, `secret2`, `isWithdrawPhase`
+  - State checks adapted:
+    - Classic: Check `move` field
+    - MinusOne initial: Check `move1` field
+    - MinusOne withdrawal: Check `withdrawn` field
+  - Reveal function calls:
+    - Classic: `reveal(gameId, clearMove)`
+    - MinusOne initial: `revealInitialMoves(gameId, clear1, clear2)`
+    - MinusOne withdrawal: `withdrawMove(gameId, clear)`
+  - UI conditionally displays:
+    - Classic: Single move display
+    - MinusOne initial: Both moves displayed side-by-side
+    - MinusOne withdrawal: Withdrawal choice (1️⃣ or 2️⃣)
+  - Final outcome shows:
+    - Classic: Final move from each player
+    - MinusOne: All 4 moves with withdrawn ones marked (grayed out with "Withdrawn" label)
+
+#### GameList.tsx
+- **Purpose:** Lists available games and shows their status
+- **Changes:**
+  - `getGamePhase()` function checks `gameMode` and appropriate fields:
+    - Classic: Returns "Commit", "Reveal", or "Outcome"
+    - MinusOne: Returns "Initial Commit", "Initial Reveal", "Withdraw Commit", "Withdraw Reveal", or "Done"
+  - Game mode badge displays "Classic" or "Minus One"
+  - Phase colors:
+    - Yellow: Commit phases
+    - Blue: Initial reveal
+    - Amber: Withdraw commit
+    - Orange: Withdraw reveal
+    - Purple: Complete/Done
+
+### Hash Generation
+
+All hashing uses Keccak256 with Web3.js:
+
+```typescript
+// Classic mode
+const hash = web3.utils.keccak256(web3.utils.utf8ToHex(`${move}-${secret}`));
+
+// MinusOne initial moves
+const hash1 = web3.utils.keccak256(web3.utils.utf8ToHex(`${move1}-${secret1}`));
+const hash2 = web3.utils.keccak256(web3.utils.utf8ToHex(`${move2}-${secret2}`));
+
+// MinusOne withdrawal
+const wHash = web3.utils.keccak256(web3.utils.utf8ToHex(`${withdrawChoice}-${secret}`));
+```
+
+### Session Storage
+
+Game state persists across page refreshes using sessionStorage:
+
+**Classic Mode:**
+```typescript
+{
+  selectedMove: string,
+  secret: string,
+  expiresAt: number
+}
+```
+
+**MinusOne Mode:**
+```typescript
+{
+  selectedMove1: string,
+  selectedMove2: string,
+  secret1: string,
+  secret2: string,
+  withdrawChoice: string,
+  expiresAt: number
+}
+```
+
+Storage expires after 1 hour to prevent stale data.
+
+## Testing Checklist
+
+### Classic Mode
+- [ ] Create new game with "Classic Mode"
+- [ ] Join game as Player B
+- [ ] Both players commit moves
+- [ ] Both players reveal moves
+- [ ] Verify correct outcome (win/lose/draw)
+- [ ] Check ETH payouts
+
+### Minus One Mode
+- [ ] Create new game with "Minus One Mode"
+- [ ] Join game as Player B
+- [ ] Both players commit 2 initial moves
+- [ ] Both players reveal initial moves
+- [ ] Verify both moves displayed correctly
+- [ ] Both players commit withdrawal choice
+- [ ] Both players reveal withdrawal
+- [ ] Verify final moves (1 active, 1 withdrawn per player)
+- [ ] Check correct outcome based on remaining moves
+- [ ] Check ETH payouts
+
+### Edge Cases
+- [ ] Timeout handling in Classic mode
+- [ ] Timeout handling in MinusOne mode (different phases)
+- [ ] Page refresh preserves state (both modes)
+- [ ] GameList shows correct phase for both modes
+- [ ] Switching between active games (mixed modes)
+
+## Deployment Steps
+
+1. **Deploy GameMinusOne contract:**
+   ```bash
+   cd crypto_clash_contract
+   npx hardhat run scripts/deploy.ts --network <network>
+   ```
+
+2. **Update config.json:**
+   ```json
+   {
+     "GAME_CONTRACT_ADDRESS": "0x...",
+     "GAME_MINUSONE_CONTRACT_ADDRESS": "0x...",
+     "NETWORK_NAME": "...",
+     "CHAIN_ID": ...
+   }
+   ```
+
+3. **Copy config to frontend:**
+   ```bash
+   cd crypto_clash_frontend
+   node copy_config.js
+   ```
+
+4. **Build and deploy frontend:**
+   ```bash
+   npm run build
+   npm run start
+   ```
+
+## Future Enhancements
+
+- Contract mode detection could be automatic (read contract bytecode or interface)
+- Support switching contracts without page reload
+- Statistics tracking for each mode separately
+- Leaderboard for each mode
+- Tournament mode supporting both game types