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hakorune/examples/maze_generator.nyash

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// 🌀 迷路ジェネレーター - outboxキーワード活用デモ
// 棒倒し法による迷路生成
print("=== Maze Generator with outbox ===")
// Cellの定義迷路の1マス
box Cell {
init { x, y, wall }
Cell(x_pos, y_pos) {
me.x = x_pos
me.y = y_pos
me.wall = true // 初期状態は壁
}
makePassage() {
me.wall = false
}
isWall() {
return me.wall
}
}
// 迷路Box定義
box Maze {
init { width, height, cells }
Maze(w, h) {
me.width = w
me.height = h
me.cells = new MapBox() // 座標→Cellのマップ
// 初期化:全部壁にする
local y, x, key, cell
y = 0
loop(y < h) {
x = 0
loop(x < w) {
key = x + "," + y
cell = new Cell(x, y)
me.cells.set(key, cell)
x = x + 1
}
y = y + 1
}
}
// 座標からCellを取得
getCell(x, y) {
local key
key = x + "," + y
return me.cells.get(key)
}
// 迷路生成(簡易版:外周以外を通路にする)
generate() {
print("Generating maze...")
// まず通路を作る1マスおきに
local y, x, cell
y = 1
loop(y < me.height - 1) {
x = 1
loop(x < me.width - 1) {
// 奇数座標を通路にする
if isOdd(x) && isOdd(y) {
cell = me.getCell(x, y)
cell.makePassage()
}
x = x + 1
}
y = y + 1
}
// 棒倒し法で壁を作る
y = 2
loop(y < me.height - 2) {
if isEven(y) {
x = 2
loop(x < me.width - 2) {
if isEven(x) {
me.placeRandomWall(x, y)
}
x = x + 2
}
}
y = y + 2
}
}
// ランダムに壁を置く
placeRandomWall(x, y) {
// ランダムな方向を選ぶ(簡易版:固定パターン)
local pattern, dir, dx, dy, targetX, targetY, key
pattern = (x + y) * 7 // 疑似ランダム
dir = pattern - (pattern >= 4) * 4 // 0-3の値
dx = 0
dy = 0
if dir == 0 {
dx = 0
dy = -1
} // 上
if dir == 1 {
dx = 1
dy = 0
} // 右
if dir == 2 {
dx = 0
dy = 1
} // 下
if dir == 3 {
dx = -1
dy = 0
} // 左
targetX = x + dx
targetY = y + dy
key = targetX + "," + targetY
// MapBox.hasを使ってキーの存在確認
if me.cells.has(key) {
local cell
cell = me.getCell(targetX, targetY)
cell.wall = true
}
}
// 迷路を表示
display() {
print("\nGenerated Maze:")
local y, x, line, cell
y = 0
loop(y < me.height) {
line = ""
x = 0
loop(x < me.width) {
cell = me.getCell(x, y)
if cell.isWall() {
line = line + "■"
} else {
line = line + " "
}
x = x + 1
}
print(line)
y = y + 1
}
}
}
// MazeFactory定義
box MazeFactory {
init { dummy }
}
// static関数でoutboxを使用
static function MazeFactory.create(width, height) {
print("MazeFactory.create called with size: " + width + "x" + height)
// outbox変数で迷路オブジェクトを作成
outbox maze
maze = new Maze(width, height)
// local変数も使う
local message
message = "Creating maze of size " + width + "x" + height
print(message)
// 迷路を生成
maze.generate()
return maze // 所有権を呼び出し側に移転
}
// 複数の迷路を作るデモ
static function MazeFactory.createMultiple() {
print("\nCreating multiple mazes...")
outbox small, medium, large
small = MazeFactory.create(11, 7)
medium = MazeFactory.create(21, 11)
large = MazeFactory.create(31, 15)
// 最初の迷路だけ返す(他は破棄される)
return small
}
// ヘルパー関数(%演算子がないため工夫)
function isOdd(n) {
// n % 2 == 1 の代替実装
local half
half = 0
loop(half * 2 < n) {
half = half + 1
}
return (n - half * 2) == 1
}
function isEven(n) {
// n % 2 == 0 の代替実装
local half
half = 0
loop(half * 2 < n) {
half = half + 1
}
return (n - half * 2) == 0
}
// メイン実行
print("\n--- Small Maze (11x7) ---")
maze1 = MazeFactory.create(11, 7)
maze1.display()
print("\n--- Medium Maze (21x11) ---")
maze2 = MazeFactory.create(21, 11)
maze2.display()
print("\n--- Multiple Maze Creation Test ---")
firstMaze = MazeFactory.createMultiple()
print("\nFirst maze from multiple creation:")
firstMaze.display()
print("\n=== Maze Generator completed! ===")
print("Note: Outbox variables successfully transferred ownership!")