function resolveEpoch(state, action) { var newState = JSON.parse(JSON.stringify(state)); var pieceIcons = { K: { 0: '♔', 1: '♚' }, Q: { 0: '♕', 1: '♛' }, R: { 0: '♖', 1: '♜' }, B: { 0: '♗', 1: '♝' }, N: { 0: '♘', 1: '♞' }, P: { 0: '♙', 1: '♟' } }; function toRC(index) { return { row: Math.floor(index / 8), col: index % 8 }; } function toIndex(row, col) { if (row < 0 || row > 7 || col < 0 || col > 7) return -1; return row * 8 + col; } function getBaseBg(index) { var rc = toRC(index); return (rc.row + rc.col) % 2 === 0 ? '#1a0a2e' : '#0a1628'; } function initBoard() { var board = []; var backRank = ['R', 'N', 'B', 'Q', 'K', 'B', 'N', 'R']; for (var i = 0; i < 64; i++) { var rc = toRC(i); var cell = { index: i, piece: null, owner: null, icon: '', bg: getBaseBg(i), color: '#666666', border: 'transparent' }; if (rc.row === 0) { cell.piece = backRank[rc.col]; cell.owner = 1; cell.icon = pieceIcons[cell.piece][1]; cell.color = '#ff00ff'; } else if (rc.row === 1) { cell.piece = 'P'; cell.owner = 1; cell.icon = pieceIcons['P'][1]; cell.color = '#ff00ff'; } else if (rc.row === 6) { cell.piece = 'P'; cell.owner = 0; cell.icon = pieceIcons['P'][0]; cell.color = '#00ffff'; } else if (rc.row === 7) { cell.piece = backRank[rc.col]; cell.owner = 0; cell.icon = pieceIcons[cell.piece][0]; cell.color = '#00ffff'; } board.push(cell); } return board; } function isPathClear(board, from, to) { var fromRC = toRC(from); var toRC_val = toRC(to); var dr = toRC_val.row - fromRC.row; var dc = toRC_val.col - fromRC.col; var steps = Math.max(Math.abs(dr), Math.abs(dc)); var stepR = dr === 0 ? 0 : dr / Math.abs(dr); var stepC = dc === 0 ? 0 : dc / Math.abs(dc); for (var s = 1; s < steps; s++) { var idx = toIndex(fromRC.row + s * stepR, fromRC.col + s * stepC); if (board[idx].piece !== null) return false; } return true; } function isSquareAttacked(board, index, byPlayer) { var target = toRC(index); for (var i = 0; i < 64; i++) { var cell = board[i]; if (cell.owner !== byPlayer) continue; var from = toRC(i); var dr = target.row - from.row; var dc = target.col - from.col; var adr = Math.abs(dr); var adc = Math.abs(dc); if (cell.piece === 'P') { var dir = byPlayer === 0 ? -1 : 1; if (dr === dir && adc === 1) return true; } else if (cell.piece === 'N') { if ((adr === 2 && adc === 1) || (adr === 1 && adc === 2)) return true; } else if (cell.piece === 'K') { if (adr <= 1 && adc <= 1 && (adr + adc > 0)) return true; } else if (cell.piece === 'R') { if ((dr === 0 || dc === 0) && isPathClear(board, i, index)) return true; } else if (cell.piece === 'B') { if (adr === adc && adr > 0 && isPathClear(board, i, index)) return true; } else if (cell.piece === 'Q') { if ((dr === 0 || dc === 0 || adr === adc) && isPathClear(board, i, index)) return true; } } return false; } function findKing(board, player) { for (var i = 0; i < 64; i++) { if (board[i].piece === 'K' && board[i].owner === player) return i; } return -1; } function isInCheck(board, player) { var kingPos = findKing(board, player); return isSquareAttacked(board, kingPos, 1 - player); } function getValidMoves(board, fromIndex, player) { var moves = []; var cell = board[fromIndex]; if (!cell.piece || cell.owner !== player) return moves; var from = toRC(fromIndex); var piece = cell.piece; var candidates = []; if (piece === 'P') { var dir = player === 0 ? -1 : 1; var startRow = player === 0 ? 6 : 1; var fwd = toIndex(from.row + dir, from.col); if (fwd !== -1 && board[fwd].piece === null) { candidates.push(fwd); if (from.row === startRow) { var fwd2 = toIndex(from.row + 2 * dir, from.col); if (fwd2 !== -1 && board[fwd2].piece === null) { candidates.push(fwd2); } } } for (var dc = -1; dc <= 1; dc += 2) { var cap = toIndex(from.row + dir, from.col + dc); if (cap !== -1 && board[cap].piece !== null && board[cap].owner !== player) { candidates.push(cap); } } } else if (piece === 'N') { var knightMoves = [[-2,-1],[-2,1],[-1,-2],[-1,2],[1,-2],[1,2],[2,-1],[2,1]]; for (var k = 0; k < knightMoves.length; k++) { var nr = from.row + knightMoves[k][0]; var nc = from.col + knightMoves[k][1]; var ni = toIndex(nr, nc); if (ni !== -1 && (board[ni].piece === null || board[ni].owner !== player)) { candidates.push(ni); } } } else if (piece === 'K') { for (var dr = -1; dr <= 1; dr++) { for (var dck = -1; dck <= 1; dck++) { if (dr === 0 && dck === 0) continue; var ki = toIndex(from.row + dr, from.col + dck); if (ki !== -1 && (board[ki].piece === null || board[ki].owner !== player)) { candidates.push(ki); } } } } else if (piece === 'R' || piece === 'Q') { var rookDirs = [[0,1],[0,-1],[1,0],[-1,0]]; for (var d = 0; d < rookDirs.length; d++) { for (var dist = 1; dist < 8; dist++) { var ri = toIndex(from.row + dist * rookDirs[d][0], from.col + dist * rookDirs[d][1]); if (ri === -1) break; if (board[ri].piece === null) { candidates.push(ri); } else { if (board[ri].owner !== player) candidates.push(ri); break; } } } } if (piece === 'B' || piece === 'Q') { var bishopDirs = [[1,1],[1,-1],[-1,1],[-1,-1]]; for (var d = 0; d < bishopDirs.length; d++) { for (var dist = 1; dist < 8; dist++) { var bi = toIndex(from.row + dist * bishopDirs[d][0], from.col + dist * bishopDirs[d][1]); if (bi === -1) break; if (board[bi].piece === null) { candidates.push(bi); } else { if (board[bi].owner !== player) candidates.push(bi); break; } } } } for (var m = 0; m < candidates.length; m++) { var testBoard = JSON.parse(JSON.stringify(board)); var toIdx = candidates[m]; testBoard[toIdx].piece = testBoard[fromIndex].piece; testBoard[toIdx].owner = testBoard[fromIndex].owner; testBoard[toIdx].icon = testBoard[fromIndex].icon; testBoard[toIdx].color = testBoard[fromIndex].color; testBoard[fromIndex].piece = null; testBoard[fromIndex].owner = null; testBoard[fromIndex].icon = ''; if (!isInCheck(testBoard, player)) { moves.push(toIdx); } } return moves; } function hasLegalMoves(board, player) { for (var i = 0; i < 64; i++) { if (board[i].owner === player) { var moves = getValidMoves(board, i, player); if (moves.length > 0) return true; } } return false; } function updateBoardVisuals(board, selectedIndex, validMoves, lastMoveFrom, lastMoveTo, inCheck) { for (var i = 0; i < 64; i++) { board[i].bg = getBaseBg(i); board[i].border = 'transparent'; if (i === lastMoveFrom || i === lastMoveTo) { board[i].bg = '#3d3d00'; } if (validMoves.indexOf(i) !== -1) { board[i].border = '#00ff00'; board[i].bg = '#003300'; } if (i === selectedIndex) { var owner = board[i].owner; board[i].border = owner === 0 ? '#00ffff' : '#ff00ff'; board[i].bg = owner === 0 ? '#004444' : '#440044'; } if (inCheck !== -1 && board[i].piece === 'K' && board[i].owner === inCheck) { board[i].bg = '#440000'; board[i].border = '#ff0000'; } } return board; } if (action.type === 'INIT') { newState.phase = 'SETUP'; newState.gameOver = false; newState.currentPlayer = 0; newState.board = initBoard(); newState.selectedIndex = -1; newState.validMoves = []; newState.inCheck = -1; newState.winner = -1; newState.capturedCyan = []; newState.capturedMagenta = []; newState.moveCount = 0; newState.lastMoveFrom = -1; newState.lastMoveTo = -1; newState.timeoutCount = [0, 0]; newState.statusText = 'SYSTEM BOOT...'; newState.board = updateBoardVisuals(newState.board, -1, [], -1, -1, -1); return newState; } if (action.type === 'TIMEOUT' && state.phase === 'SETUP') { newState.phase = 'PLAY'; newState.statusText = 'CYAN TURN'; return newState; } if (action.type === 'TIMEOUT' && state.phase === 'PLAY') { var player = newState.currentPlayer; newState.timeoutCount[player]++; if (newState.timeoutCount[player] >= 3) { newState.phase = 'GAME_OVER'; newState.gameOver = true; newState.winner = 1 - player; newState.statusText = (player === 0 ? 'MAGENTA' : 'CYAN') + ' WINS - TIMEOUT FORFEIT'; return newState; } var legalMoves = []; for (var i = 0; i < 64; i++) { if (newState.board[i].owner === player) { var moves = getValidMoves(newState.board, i, player); for (var m = 0; m < moves.length; m++) { legalMoves.push({ from: i, to: moves[m] }); } } } if (legalMoves.length > 0) { var randomMove = legalMoves[Math.floor(Math.random() * legalMoves.length)]; var fromCell = newState.board[randomMove.from]; var toCell = newState.board[randomMove.to]; if (toCell.piece) { if (player === 0) { newState.capturedCyan.push(toCell.icon); } else { newState.capturedMagenta.push(toCell.icon); } } var isPawnMove = fromCell.piece === 'P'; var isCapture = toCell.piece !== null; var promotedPiece = fromCell.piece; var promotedIcon = fromCell.icon; if (fromCell.piece === 'P') { var destRow = toRC(randomMove.to).row; if ((player === 0 && destRow === 0) || (player === 1 && destRow === 7)) { promotedPiece = 'Q'; promotedIcon = pieceIcons['Q'][player]; } } newState.board[randomMove.to].piece = promotedPiece; newState.board[randomMove.to].owner = player; newState.board[randomMove.to].icon = promotedIcon; newState.board[randomMove.to].color = player === 0 ? '#00ffff' : '#ff00ff'; newState.board[randomMove.from].piece = null; newState.board[randomMove.from].owner = null; newState.board[randomMove.from].icon = ''; newState.board[randomMove.from].color = '#666666'; newState.lastMoveFrom = randomMove.from; newState.lastMoveTo = randomMove.to; if (isPawnMove || isCapture) { newState.moveCount = 0; } else { newState.moveCount++; } var nextPlayer = 1 - player; newState.currentPlayer = nextPlayer; var nextInCheck = isInCheck(newState.board, nextPlayer); var nextHasMoves = hasLegalMoves(newState.board, nextPlayer); newState.inCheck = nextInCheck ? nextPlayer : -1; if (!nextHasMoves) { newState.phase = 'GAME_OVER'; newState.gameOver = true; if (nextInCheck) { newState.winner = player; newState.statusText = 'HACK SUCCESSFUL - ' + (player === 0 ? 'CYAN' : 'MAGENTA') + ' WINS'; } else { newState.winner = 2; newState.statusText = 'SYSTEM DEADLOCK - STALEMATE DRAW'; } } else if (nextInCheck) { newState.statusText = (nextPlayer === 0 ? 'CYAN' : 'MAGENTA') + ' IN CHECK'; } else { newState.statusText = (nextPlayer === 0 ? 'CYAN' : 'MAGENTA') + ' TURN'; } newState.selectedIndex = -1; newState.validMoves = []; newState.board = updateBoardVisuals(newState.board, -1, [], newState.lastMoveFrom, newState.lastMoveTo, newState.inCheck); } return newState; } if (action.type === 'SELECT_CELL' && state.phase === 'PLAY') { var cellIndex = action.payload.cellIndex; var currentPlayer = newState.currentPlayer; var clickedCell = newState.board[cellIndex]; var actingPlayer = -1; if (state.players && action.playerId) { actingPlayer = state.players.indexOf(action.playerId); } if (actingPlayer !== -1 && actingPlayer !== currentPlayer) { return state; } newState.timeoutCount[currentPlayer] = 0; if (newState.selectedIndex === -1) { if (clickedCell.piece && clickedCell.owner === currentPlayer) { newState.selectedIndex = cellIndex; newState.validMoves = getValidMoves(newState.board, cellIndex, currentPlayer); newState.board = updateBoardVisuals(newState.board, cellIndex, newState.validMoves, newState.lastMoveFrom, newState.lastMoveTo, newState.inCheck); } return newState; } if (newState.validMoves.indexOf(cellIndex) !== -1) { var fromCell = newState.board[newState.selectedIndex]; var toCell = newState.board[cellIndex]; if (toCell.piece) { if (currentPlayer === 0) { newState.capturedCyan.push(toCell.icon); } else { newState.capturedMagenta.push(toCell.icon); } } var isPawnMove = fromCell.piece === 'P'; var isCapture = toCell.piece !== null; var promotedPiece = fromCell.piece; var promotedIcon = fromCell.icon; if (fromCell.piece === 'P') { var destRow = toRC(cellIndex).row; if ((currentPlayer === 0 && destRow === 0) || (currentPlayer === 1 && destRow === 7)) { promotedPiece = 'Q'; promotedIcon = pieceIcons['Q'][currentPlayer]; } } newState.board[cellIndex].piece = promotedPiece; newState.board[cellIndex].owner = currentPlayer; newState.board[cellIndex].icon = promotedIcon; newState.board[cellIndex].color = currentPlayer === 0 ? '#00ffff' : '#ff00ff'; newState.board[newState.selectedIndex].piece = null; newState.board[newState.selectedIndex].owner = null; newState.board[newState.selectedIndex].icon = ''; newState.board[newState.selectedIndex].color = '#666666'; newState.lastMoveFrom = newState.selectedIndex; newState.lastMoveTo = cellIndex; newState.selectedIndex = -1; newState.validMoves = []; if (isPawnMove || isCapture) { newState.moveCount = 0; } else { newState.moveCount++; } if (newState.moveCount >= 100) { newState.phase = 'GAME_OVER'; newState.gameOver = true; newState.winner = 2; newState.statusText = 'SYSTEM DEADLOCK - MEMORY OVERFLOW DRAW'; newState.board = updateBoardVisuals(newState.board, -1, [], newState.lastMoveFrom, newState.lastMoveTo, -1); return newState; } var nextPlayer = 1 - currentPlayer; newState.currentPlayer = nextPlayer; var nextInCheck = isInCheck(newState.board, nextPlayer); var nextHasMoves = hasLegalMoves(newState.board, nextPlayer); newState.inCheck = nextInCheck ? nextPlayer : -1; if (!nextHasMoves) { newState.phase = 'GAME_OVER'; newState.gameOver = true; if (nextInCheck) { newState.winner = currentPlayer; newState.statusText = 'HACK SUCCESSFUL - ' + (currentPlayer === 0 ? 'CYAN' : 'MAGENTA') + ' WINS'; } else { newState.winner = 2; newState.statusText = 'SYSTEM DEADLOCK - STALEMATE DRAW'; } } else if (nextInCheck) { newState.statusText = (nextPlayer === 0 ? 'CYAN' : 'MAGENTA') + ' IN CHECK'; } else { newState.statusText = (nextPlayer === 0 ? 'CYAN' : 'MAGENTA') + ' TURN'; } newState.board = updateBoardVisuals(newState.board, -1, [], newState.lastMoveFrom, newState.lastMoveTo, newState.inCheck); return newState; } if (clickedCell.piece && clickedCell.owner === currentPlayer) { newState.selectedIndex = cellIndex; newState.validMoves = getValidMoves(newState.board, cellIndex, currentPlayer); newState.board = updateBoardVisuals(newState.board, cellIndex, newState.validMoves, newState.lastMoveFrom, newState.lastMoveTo, newState.inCheck); return newState; } newState.selectedIndex = -1; newState.validMoves = []; newState.board = updateBoardVisuals(newState.board, -1, [], newState.lastMoveFrom, newState.lastMoveTo, newState.inCheck); return newState; } return newState; }

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