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The player scores points based on the chain length and values.\n * We'll use React for the UI and manage game state on the client side.\n * The server will just serve the initial HTML and JavaScript.\n *\n * We've updated the color scheme to have a dark background with colored tiles.\n * Each number has its own color on a hue scale, cycling through hues for arbitrary powers of two.\n * Selected chain tiles now have a white border, and numbers are white for better visibility.\n * Non-bordered tiles now have a transparent border to maintain consistent size and prevent layout jumps.\n * New tiles fading in no longer show a white border.\n * New tiles now have a random power of two between the min and max numbers on the board.\n * Initial possible numbers are now between 2 and 32.\n *\n * Added error handling to prevent \"TypeError: cell1 is not iterable\" error.\n */\n\n/** @jsxImportSource https://esm.sh/react */\nimport React, { useEffect, useRef, useState } from \"https://esm.sh/react\"\nimport { createRoot } from \"https://esm.sh/react-dom/client\"\n\n// Game board size\nconst BOARD_SIZE = 6\n\n// Hue difference between each power of two\nconst HUE_DIFF = 25\n\nfunction getColor(value: number): string {\n const power = Math.log2(value / 2)\n const hue = (power * HUE_DIFF) % 360\n return `hsl(${hue}, 50%, 50%)`\n}\n\nfunction App() {\n const [board, setBoard] = useState([])\n const [selectedCells, setSelectedCells] = useState<[number, number][]>([])\n const [score, setScore] = useState(0)\n const [isDragging, setIsDragging] = useState(false)\n const [animatingCells, setAnimatingCells] = useState<[number, number][]>([])\n const [newCells, setNewCells] = useState<[number, number][]>([])\n const boardRef = useRef(null)\n\n useEffect(() => {\n initializeBoard()\n }, [])\n\n const initializeBoard = () => {\n const newBoard = Array(BOARD_SIZE).fill(null).map(() =>\n Array(BOARD_SIZE).fill(null).map(() => Math.pow(2, Math.floor(Math.random() * 5) + 1))\n )\n setBoard(newBoard)\n setSelectedCells([])\n setScore(0)\n setNewCells(newBoard.flatMap((row, i) => row.map((_, j) => [i, j] as [number, number])))\n setTimeout(() => setNewCells([]), 500) // Clear new cells after animation\n }\n\n const handleMouseDown = (row: number, col: number) => {\n setIsDragging(true)\n setSelectedCells([[row, col]])\n }\n\n const handleMouseEnter = (row: number, col: number) => {\n if (!isDragging) return\n\n setSelectedCells(prev => {\n if (prev.length === 0) return [[row, col]]\n const lastSelected = prev[prev.length - 1]\n if (\n isValidCell(lastSelected) && isValidCell([row, col])\n && isAdjacent(lastSelected, [row, col])\n && board[row][col] === board[lastSelected[0]][lastSelected[1]]\n && !prev.some(cell => isValidCell(cell) && cell[0] === row && cell[1] === col)\n ) {\n return [...prev, [row, col]]\n }\n return prev\n })\n }\n\n const handleMouseUp = () => {\n setIsDragging(false)\n if (selectedCells.length > 1) {\n processChain()\n } else {\n setSelectedCells([])\n }\n }\n\n const isValidCell = (cell: any): cell is [number, number] => {\n return Array.isArray(cell) && cell.length === 2\n && typeof cell[0] === \"number\" && typeof cell[1] === \"number\"\n && cell[0] >= 0 && cell[0] < BOARD_SIZE\n && cell[1] >= 0 && cell[1] < BOARD_SIZE\n }\n\n const isAdjacent = (cell1: [number, number], cell2: [number, number]) => {\n if (!isValidCell(cell1) || !isValidCell(cell2)) return false\n const [row1, col1] = cell1\n const [row2, col2] = cell2\n return Math.abs(row1 - row2) <= 1 && Math.abs(col1 - col2) <= 1 && !(row1 === row2 && col1 === col2)\n }\n\n const getRandomPowerOfTwo = (min: number, max: number) => {\n const minPower = Math.ceil(Math.log2(min))\n const maxPower = Math.floor(Math.log2(max))\n return Math.pow(2, Math.floor(Math.random() * (maxPower - minPower + 1)) + minPower)\n }\n\n const processChain = () => {\n if (selectedCells.length < 2 || !isValidCell(selectedCells[0])) {\n setSelectedCells([])\n return\n }\n\n const newBoard = [...board.map(row => [...row])]\n const cellValue = board[selectedCells[0][0]][selectedCells[0][1]]\n const chainTotal = cellValue * selectedCells.length\n const roundedTotal = Math.pow(2, Math.ceil(Math.log2(chainTotal)))\n const points = chainTotal\n\n // Set the last cell in the chain to the rounded total\n const lastCell = selectedCells[selectedCells.length - 1]\n if (isValidCell(lastCell)) {\n const [lastRow, lastCol] = lastCell\n newBoard[lastRow][lastCol] = roundedTotal\n }\n\n // Find min and max values on the board\n const allValues = newBoard.flat()\n const minValue = Math.min(...allValues)\n const maxValue = Math.max(...allValues)\n\n // Set other cells in the chain to new random values\n const newCellsToAnimate: [number, number][] = []\n for (let i = 0; i < selectedCells.length - 1; i++) {\n const cell = selectedCells[i]\n if (isValidCell(cell)) {\n const [row, col] = cell\n newBoard[row][col] = getRandomPowerOfTwo(minValue, maxValue)\n newCellsToAnimate.push([row, col])\n }\n }\n\n setBoard(newBoard)\n setScore(prevScore => prevScore + points)\n setAnimatingCells([...selectedCells])\n setNewCells(newCellsToAnimate)\n\n // Clear animations after they're done\n setTimeout(() => {\n setAnimatingCells([])\n setSelectedCells([])\n setNewCells([])\n }, 500)\n }\n\n return (\n

Number Chain Puzzle

\n \n {board.map((row, i) => (\n

\n {row.map((cell, j) => (\n r === i && c === j) ? \"selected\" : \"\"}\n ${animatingCells.some(([r, c]) => r === i && c === j) ? \"animating\" : \"\"}\n ${newCells.some(([r, c]) => r === i && c === j) ? \"new-cell\" : \"\"}\n `}\n style={{ backgroundColor: getColor(cell) }}\n onMouseDown={() => handleMouseDown(i, j)}\n onMouseEnter={() => handleMouseEnter(i, j)}\n >\n {cell}\n

\n ))}\n

\n ))}\n \n

Score: {score}

\n \n

Drag between adjacent cells (including diagonals) with the same number to form a chain and score points!

The last cell in the chain will hold the total value rounded up to the nearest power of two.

\n View Source\n

\n \n )\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render()\n}\n\nif (typeof document !== \"undefined\") { client() }\n\nasync function server(request: Request): Promise {\n return new Response(\n `\n \n \n Number Chain Puzzle\n \n \n \n

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Diff · v1