Code template: selector

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

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+"use strict";
+
+let timer = "stop";
+let generationFigure = 0;
+let isDragging = false;
+let dragMode = 0; // 1: 黒にする, 0: 白にする
+let isPlacingTemplate = false;
+let patternShape = [];
+let patternHeight = 0;
+let patternWidth = 0;
+let previewCells = [];
+
+//変数設定
+let boardSize = 20; //盤面の大きさ(20x20)
+const cellSize = 600 / boardSize; //セルの大きさ(px)
+const maxLifespan = 2; // セルの最大寿命
+
+// around: 周囲の生きたセル数, currentLifespan: 現在の寿命
+function getNextLifespan(around, currentLifespan) {
+  // セルが生きている場合
+  if (currentLifespan > 0) {
+    // 周囲が 2 か 3 なら寿命を維持（減らさない）
+    if (2 <= around && around <= 3) {
+      return currentLifespan;
+    }
+    // 条件を満たさない場合は寿命を減らす
+    return currentLifespan - 1;
+  }
+
+  // セルが死んでいる場合
+  // 周囲が 3 なら誕生
+  if (around === 3) {
+    return maxLifespan;
+  }
+
+  return 0;
+}
+
+// cellの状態に応じた色を返す関数
+function getStyle(cell, lifespan) {
+  if (cell === 0) return "white";
+
+  // cellの値に応じて色を返す場合はここに追加
+  if (lifespan === 2) return "black";
+  if (lifespan === 1) return "gray";
+  if (lifespan === 0) return "white";
+
+  return "black"; // デフォルトは黒
+}
+
+//Boardの初期化
+let board = Array.from({ length: boardSize }, () => Array.from({ length: boardSize }, () => 0));
+const table = document.getElementById("game-board");
+
+//盤面をBoardに従って変更する関数達(Boardを変更したら実行する)
+function renderBoard() {
+  // 初回の盤面生成
+  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.lifespan = board[i][j] ? maxLifespan : 0; // セルの寿命を設定
+      button.style.backgroundColor = getStyle(board[i][j], button.lifespan); //Boardの対応する値によって色を変更
+
+      // ボードが大きいときは border をつけない
+      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"; //cellSizeが小さいとき、セルが横長になることを防ぐ
+      button.style.display = "block"; //cellSizeが小さいとき、行間が空きすぎるのを防ぐ
+
+      button.onclick = () => {
+        if (isPlacingTemplate) {
+          clearPreview();
+          isPlacingTemplate = false;
+          if (i + patternHeight < boardSize + 1 && j + patternWidth < boardSize + 1) {
+            for (let r = 0; r < patternHeight; r++) {
+              for (let c = 0; c < patternWidth; c++) {
+                const boardRow = i + r;
+                const boardCol = j + c;
+                board[boardRow][boardCol] = patternShape[r][c];
+                // パターン配置時に寿命を設定
+                if (patternShape[r][c]) {
+                  const btn = table.children[boardRow].children[boardCol].children[0];
+                  btn.lifespan = maxLifespan;
+                }
+              }
+            }
+            rerender();
+            generationChange(0);
+            stop();
+          } else {
+            window.parent.postMessage(
+              {
+                type: "Size shortage",
+                data: {},
+              },
+              "*",
+            );
+          }
+        }
+      };
+      button.onmousedown = (e) => {
+        e.preventDefault();
+        if (timer === "stop" && !isPlacingTemplate) {
+          isDragging = true;
+          board[i][j] = !board[i][j];
+          dragMode = board[i][j];
+          button.lifespan = board[i][j] ? maxLifespan : 0;
+          button.style.backgroundColor = getStyle(board[i][j], button.lifespan);
+        }
+      };
+      button.onmouseenter = () => {
+        if (isDragging && timer === "stop" && board[i][j] !== dragMode && !isPlacingTemplate) {
+          board[i][j] = dragMode;
+          button.lifespan = board[i][j] ? maxLifespan : 0;
+          button.style.backgroundColor = getStyle(board[i][j], button.lifespan);
+        }
+        if (isPlacingTemplate) {
+          drawPreview(i, j);
+        }
+      };
+      td.appendChild(button);
+      tr.appendChild(td);
+    }
+    table.appendChild(tr);
+  }
+}
+
+table.onmouseleave = () => {
+  if (isPlacingTemplate) {
+    clearPreview();
+  }
+};
+
+function drawPreview(row, col) {
+  clearPreview();
+  for (let r = 0; r < patternHeight; r++) {
+    for (let c = 0; c < patternWidth; c++) {
+      if (patternShape[r][c] === 1) {
+        const boardRow = row + r;
+        const boardCol = col + c;
+        if (boardRow < boardSize && boardCol < boardSize) {
+          const cell = table.rows[boardRow].cells[boardCol].firstChild;
+          cell.style.backgroundColor = "gray";
+          previewCells.push({ row: boardRow, col: boardCol });
+        }
+      }
+    }
+  }
+}
+
+function clearPreview() {
+  previewCells.forEach((cellPos) => {
+    const cell = table.rows[cellPos.row].cells[cellPos.col].firstChild;
+    const lifespan = cell.lifespan || 0;
+    cell.style.backgroundColor = getStyle(board[cellPos.row][cellPos.col], lifespan);
+  });
+  previewCells = [];
+}
+
+function rerender() {
+  // ２回目以降の盤面生成
+  for (let i = 0; i < boardSize; i++) {
+    for (let j = 0; j < boardSize; j++) {
+      const button = table.children[i].children[j].children[0];
+
+      // 色の更新
+      const currentCellColor = button.style.backgroundColor;
+      const expectedCellColor = getStyle(board[i][j], button.lifespan);
+      if (currentCellColor !== expectedCellColor) {
+        button.style.backgroundColor = expectedCellColor;
+      }
+
+      // セルサイズの更新
+      const currentCellsize = button.style.width;
+      const expectedCellsize = `${cellSize}px`;
+      if (currentCellsize !== expectedCellsize) {
+        button.style.width = expectedCellsize;
+        button.style.height = expectedCellsize;
+      }
+    }
+  }
+}
+
+document.addEventListener("mouseup", () => {
+  isDragging = false;
+});
+
+renderBoard();
+progressBoard();
+
+function generationChange(num) {
+  //現在の世代を表すgenerationFigureを変更し、文章も変更
+  generationFigure = num;
+  window.parent.postMessage(
+    {
+      type: "generation_change",
+      data: generationFigure,
+    },
+    "*",
+  );
+}
+
+function progressBoard() {
+  const newLifespans = Array(boardSize)
+    .fill(0)
+    .map(() => Array(boardSize).fill(0));
+
+  for (let i = 0; i < boardSize; i++) {
+    for (let j = 0; j < boardSize; j++) {
+      //周囲のマスに黒マスが何個あるかを計算(aroundに格納)↓
+      let around = 0;
+      let tate, yoko;
+      if (i === 0) {
+        tate = [0, 1];
+      } else if (i === boardSize - 1) {
+        tate = [0, -1];
+      } else {
+        tate = [-1, 0, 1];
+      }
+      if (j === 0) {
+        yoko = [0, 1];
+      } else if (j === boardSize - 1) {
+        yoko = [0, -1];
+      } else {
+        yoko = [-1, 0, 1];
+      }
+      for (let ii = 0; ii < tate.length; ii++) {
+        for (let jj = 0; jj < yoko.length; jj++) {
+          if (tate[ii] !== 0 || yoko[jj] !== 0) {
+            const neighborButton = table.children[i + tate[ii]].children[j + yoko[jj]].children[0];
+            around += neighborButton.lifespan > 0 ? 1 : 0;
+          }
+        }
+      }
+      //↑周囲のマスに黒マスが何個あるかを計算(aroundに格納)
+
+      // 前の世代の寿命をボタンから取得し、新しい寿命を計算して保存
+      const button = table.children[i].children[j].children[0];
+      const currentLifespan = button.lifespan;
+      newLifespans[i][j] = getNextLifespan(around, currentLifespan);
+    }
+  }
+
+  // 新しい寿命を適用
+  for (let i = 0; i < boardSize; i++) {
+    for (let j = 0; j < boardSize; j++) {
+      const button = table.children[i].children[j].children[0];
+      button.lifespan = newLifespans[i][j];
+      board[i][j] = button.lifespan > 0 ? 1 : 0;
+    }
+  }
+
+  generationChange(generationFigure + 1);
+  rerender();
+}
+
+//イベント
+
+on.progress = () => {
+  progressBoard();
+};
+
+on.play = () => {
+  timer = "start";
+};
+
+on.pause = () => {
+  timer = "stop";
+};
+
+on.board_reset = () => {
+  //すべて白にBoardを変更
+  board = Array.from({ length: boardSize }, () => Array.from({ length: boardSize }, () => 0));
+  renderBoard();
+  generationChange(0);
+};
+
+on.board_randomize = () => {
+  //白黒ランダムにBoardを変更
+  board = Array.from({ length: boardSize }, () =>
+    Array.from({ length: boardSize }, () => (Math.random() > 0.5 ? 1 : 0)),
+  );
+  renderBoard();
+  generationChange(0);
+};
+
+on.request_sync = () => {
+  window.parent.postMessage(
+    {
+      type: "sync",
+      data: {
+        generationFigure: generationFigure,
+        boardSize: boardSize,
+      },
+    },
+    "*",
+  );
+  console.log("generationFigure:", generationFigure, "boardSize:", boardSize);
+};
+
+on.place_template = (template) => {
+  patternShape = template;
+  patternHeight = patternShape.length;
+  patternWidth = patternShape[0].length;
+  isPlacingTemplate = true;
+  table.style.cursor = "crosshair";
+  stop();
+};
+
+on.save_board = async () => {
+  window.parent.postMessage({ type: "save_board", data: board }, "*");
+};
+
+on.apply_board = (newBoard) => {
+  board = newBoard;
+  renderBoard();
+  generationChange(0);
+  stop();
+};