コードテンプレート：１次元ライフゲームの追加

src/lib/assets/life-game-rules/wolframcode.js

@@ -0,0 +1,132 @@
+"use strict";
+
+let generationFigure = 0;
+let currentRow = 0;
+
+//盤面の大きさ
+const boardSize = 201; //奇数に設定する
+const cellSize = 450 / boardSize;
+const centerline = (boardSize - 1) / 2;
+
+//セルの色
+const aliveCellColor = "black";
+const deadCellColor = "white";
+
+//セルの生存条件(誕生条件)
+//今回は0から7までのパターンのうち 4, 3, 2, 1 が生存条件なので、2^4 + 2^3 + 2^2 + 2^1 = 30 から ルール30と呼ばれる。
+//他にルール184(7,5,4,3)や、ルール110(6,5,3,2,1)、ルール90(6,4,3,1)などが有名なので試してみましょう
+
+// 生存パターン(2進法)を整数(10進法)で定義
+const aliveRules = new Set([4, 3, 2, 1]);
+function isNextAlive(left, center, right) {
+  // ビットシフトで3つの数値を1つの整数にする
+  // 例: 1, 0, 0 => (1<<2) | (0<<1) | 0 => 4
+  const pattern = (left << 2) | (center << 1) | right;
+  // セットに含まれているか確認（1 or 0 を返す）
+  return aliveRules.has(pattern) ? 1 : 0;
+}
+
+function getStyle(cell) {
+  if (cell === 0) return deadCellColor;
+  return aliveCellColor;
+}
+
+let board = Array.from({ length: boardSize }, () => Array.from({ length: boardSize }, () => 0));
+board[0][centerline] = 1; //最上段中央のセルだけ生きたセルに変更
+const table = document.getElementById("game-board");
+
+function renderBoard() {
+  document.body.style.display = "flex";
+  document.body.style.justifyContent = "center";
+  document.body.style.alignItems = "center";
+  document.body.style.minHeight = "100vh";
+  document.body.style.margin = "0";
+  document.body.style.padding = "0";
+
+  table.innerHTML = "";
+  for (let i = 0; i < boardSize; i++) {
+    const tr = document.createElement("tr");
+    tr.style.padding = "0";
+    for (let j = 0; j < boardSize; j++) {
+      const td = document.createElement("td");
+      td.style.padding = "0";
+      const button = document.createElement("button");
+      button.style.backgroundColor = board[i][j] ? aliveCellColor : deadCellColor;
+      if (boardSize >= 50) {
+        button.style.border = "none";
+        table.style.border = "1px solid black";
+      } else {
+        button.style.border = "0.5px solid black";
+      }
+      button.style.width = `${cellSize}px`;
+      button.style.height = `${cellSize}px`;
+      button.style.padding = "0";
+      button.style.display = "block";
+      td.appendChild(button);
+      tr.appendChild(td);
+    }
+    table.appendChild(tr);
+  }
+}
+
+function rerender() {
+  // ２回目以降の盤面生成は一行ずつ行う
+  if (currentRow >= boardSize) return;
+  for (let j = 0; j < boardSize; j++) {
+    const button = table.children[currentRow].children[j].children[0];
+    const currentCellColor = button.style.backgroundColor;
+    const expectedCellColor = getStyle(board[currentRow][j]);
+    if (currentCellColor !== expectedCellColor) {
+      button.style.backgroundColor = expectedCellColor;
+    }
+  }
+}
+
+renderBoard();
+
+function generationChange(num) {
+  generationFigure = num;
+  window.parent.postMessage({ type: "generation_change", data: generationFigure }, "*");
+}
+
+function progressBoard() {
+  if (currentRow >= boardSize - 1) return;
+  const newBoard = structuredClone(board);
+  //セルの計算は一行ずつ行う
+  for (let j = 1; j < boardSize - 1; j++) {
+    const left = board[currentRow][j - 1];
+    const center = board[currentRow][j];
+    const right = board[currentRow][j + 1];
+    newBoard[currentRow + 1][j] = isNextAlive(left, center, right);
+  }
+  board = newBoard;
+  currentRow += 1;
+  generationChange(generationFigure + 1);
+  rerender();
+}
+
+on.progress = () => {
+  progressBoard();
+};
+
+on.board_reset = () => {
+  board = Array.from({ length: boardSize }, () => Array.from({ length: boardSize }, () => 0));
+  board[0][centerline] = 1; //初期状態のドットを再配置
+  currentRow = 0; //行もリセット
+  renderBoard();
+  generationChange(0);
+};
+
+on.board_randomize = () => {
+  board = Array.from({ length: boardSize }, () => Array.from({ length: boardSize }, () => 0));
+  for (let j = 0; j < boardSize; j++) {
+    board[0][j] = Math.random() > 0.5 ? 1 : 0; //最初の行をランダムにする
+  }
+  currentRow = 0;
+  renderBoard();
+  generationChange(0);
+};
+
+on.save_board = async () => {
+  window.parent.postMessage({ type: "save_board", data: board }, "*");
+};

src/lib/rules-explanation.ts

@@ -1,5 +1,6 @@
 import lifespan from "$lib/assets/life-game-rules/lifespan.js?raw";
 import probabilistics from "$lib/assets/life-game-rules/probabilistics.js?raw";
+import wolframcode from "$lib/assets/life-game-rules/wolframcode.js?raw";
 
 export type RuleExplanation = {
   name: {
@@ -35,4 +36,15 @@ export const rulesExplanation = {
     },
     code: probabilistics,
   },
+  wolframcode: {
+    name: {
+      ja: "ウルフラム・コード",
+      en: "Wolfram code",
+    },
+    description: {
+      ja: "物理学者スティーブン・ウルフラムが考案した１次元のセルオートマトンです",
+      en: "a one-dimensional cellular automaton created by physicist Stephen Wolfram",
+    },
+    code: wolframcode,
+  },
 };