Parallax Japanese Words

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\n {activeWords.map((word, index) => (\n \n {word.text}\n \n ))}\n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request): Promise {\n return new Response(`\n \n \n Parallax Japanese Words\n \n \n \n \n

\n \n \n \n \n `, {\n headers: { \"content-type\": \"text/html\" }\n });\n}","/** @jsxImportSource https://esm.sh/react */\nimport React, { useEffect, useState, useCallback } from \"https://esm.sh/react\";\nimport { createRoot } from \"https://esm.sh/react-dom/client\";\n\nfunction ParallaxWords() {\n const [words] = useState([\n \"金\", \"将来\", \"自分\", \"ない\", \"外国人\", \"答え\", \"不自由\", \"久しぶり\", \n \"工場\", \"為\", \"未来\", \"約束\", \"学校\", \"楽しい\", \"山\", \"東京\", \n \"電車\", \"感謝\", \"友達\", \"時間\", \"海\", \"空\", \"風\", \"愛\", \n \"心\", \"笑う\", \"悲しい\", \"美しい\", \"強い\", \"平和\", \"夢\", \"希望\", \n \"勇気\", \"自由\", \"音楽\", \"旅行\", \"春\", \"夏\", \"秋\", \"冬\", \n \"朝\", \"昼\", \"夜\", \"星\", \"月\", \"花\", \"森\", \"川\", \"山\", \"絵\"\n ]);\n\n const [activeWords, setActiveWords] = useState([]);\n const MAX_WORDS = 7;\n const MAX_BRIGHTNESS = 0.7;\n const MIN_X = 50;\n const MAX_SPEED = 0.1;\n const MIN_SPEED = 0.02;\n\n const getRandomY = useCallback((usedYPositions) => {\n const containerHeight = 100;\n const wordHeight = 6;\n let y;\n let tries = 0;\n\n do {\n y = Math.random() * (containerHeight - wordHeight);\n tries++;\n } while (\n usedYPositions.some(\n (existingY) => Math.abs(existingY - y) < wordHeight\n ) &&\n tries < 100\n );\n\n return y;\n }, []);\n\n const createNewWord = useCallback(() => {\n const newWord = {\n id: Date.now(), // Unique identifier\n text: words[Math.floor(Math.random() * words.length)],\n brightness: 0.3 + Math.random() * (MAX_BRIGHTNESS - 0.3),\n y: getRandomY(activeWords.map(w => w.y)),\n x: 100, // Start from the right side\n speed: 0 // Will be calculated based on brightness\n };\n \n newWord.speed = MIN_SPEED + \n (newWord.brightness - 0.3) * \n ((MAX_SPEED - MIN_SPEED) / (MAX_BRIGHTNESS - 0.3));\n \n return newWord;\n }, [words, activeWords, getRandomY]);\n\n useEffect(() => {\n // Animation loop\n const animateWords = () => {\n setActiveWords(prevWords => {\n // Move existing words\n const movedWords = prevWords.map(word => ({\n ...word,\n x: word.x - word.speed\n })).filter(word => word.x > -10); // Remove words that are off-screen\n\n // Add new words if needed\n while (movedWords.length < MAX_WORDS) {\n movedWords.push(createNewWord());\n }\n\n return movedWords;\n });\n };\n\n // Set up interval for animation\n const intervalId = setInterval(animateWords, 50);\n\n // Cleanup interval on unmount\n return () => clearInterval(intervalId);\n }, [createNewWord, MAX_WORDS]);\n\n return (\n

\n {activeWords.map((word) => (\n \n {word.text}\n \n ))}\n

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