From 82c9f5fd4a5de802ce752cdfc3360f86f2485917 Mon Sep 17 00:00:00 2001
From: weilycoder <weily2009@outlook.com>
Date: Wed, 20 Nov 2024 18:49:59 +0800
Subject: [PATCH 1/3] Support generating maze maps

---
 cyaron/__init__.py |  1 +
 cyaron/maze.py     | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 cyaron/maze.py

diff --git a/cyaron/__init__.py b/cyaron/__init__.py
index ec5f271..3b2e2d8 100644
--- a/cyaron/__init__.py
+++ b/cyaron/__init__.py
@@ -15,6 +15,7 @@
 from .graph import Edge, Graph
 from .io import IO
 from .math import *
+from .maze import *
 from .merger import Merger
 from .polygon import Polygon
 from .sequence import Sequence
diff --git a/cyaron/maze.py b/cyaron/maze.py
new file mode 100644
index 0000000..80b57ea
--- /dev/null
+++ b/cyaron/maze.py
@@ -0,0 +1,35 @@
+import random
+
+__all__ = ["generate_maze"]
+
+
+def generate_maze(
+    width: int,
+    height: int,
+    *,
+    wall: str = "#",
+    way: str = ".",
+    start: str = "S",
+    end: str = "T",
+):
+    maze = [[wall for _ in range(width)] for _ in range(height)]
+
+    def carve_passages_from(cx, cy):
+        d = [(0, -1), (0, 1), (-1, 0), (1, 0)]
+        random.shuffle(d)
+        for dx, dy in d:
+            nx, ny = cx + dx * 2, cy + dy * 2
+            if 0 <= nx < width and 0 <= ny < height and maze[ny][nx] == wall:
+                maze[ny][nx] = maze[cy + dy][cx + dx] = way
+                carve_passages_from(nx, ny)
+
+    start_x = random.randrange(0, width)
+    start_y = random.randrange(0, height)
+    maze[start_y][start_x] = start
+    carve_passages_from(start_x, start_y)
+
+    end_x, end_y = random.choice([(x, y) for x in range(width)
+                                  for y in range(height) if maze[y][x] == way])
+    maze[end_y][end_x] = end
+
+    return maze

From a3041d8b6e0d5a25c7b928f0f7ab66792d38f2e3 Mon Sep 17 00:00:00 2001
From: weilycoder <weily2009@outlook.com>
Date: Wed, 20 Nov 2024 19:21:42 +0800
Subject: [PATCH 2/3] Manually simulate a stack to replace recursion

---
 cyaron/maze.py | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/cyaron/maze.py b/cyaron/maze.py
index 80b57ea..8212027 100644
--- a/cyaron/maze.py
+++ b/cyaron/maze.py
@@ -14,14 +14,17 @@ def generate_maze(
 ):
     maze = [[wall for _ in range(width)] for _ in range(height)]
 
-    def carve_passages_from(cx, cy):
+    def carve_passages_from(x, y):
+        stack = [(x, y)]
         d = [(0, -1), (0, 1), (-1, 0), (1, 0)]
-        random.shuffle(d)
-        for dx, dy in d:
-            nx, ny = cx + dx * 2, cy + dy * 2
-            if 0 <= nx < width and 0 <= ny < height and maze[ny][nx] == wall:
-                maze[ny][nx] = maze[cy + dy][cx + dx] = way
-                carve_passages_from(nx, ny)
+        while len(stack) >= 1:
+            cx, cy = stack.pop()
+            random.shuffle(d)
+            for dx, dy in d:
+                nx, ny = cx + dx * 2, cy + dy * 2
+                if 0 <= nx < width and 0 <= ny < height and maze[ny][nx] == wall:
+                    maze[ny][nx] = maze[cy + dy][cx + dx] = way
+                    stack.append((nx, ny))
 
     start_x = random.randrange(0, width)
     start_y = random.randrange(0, height)

From 7ae894e9537fa49909cf220d1d80db8b4405f18f Mon Sep 17 00:00:00 2001
From: weilycoder <weily2009@outlook.com>
Date: Fri, 6 Dec 2024 22:27:44 +0800
Subject: [PATCH 3/3] Rename file

---
 cyaron/__init__.py          | 2 +-
 cyaron/{maze.py => misc.py} | 0
 2 files changed, 1 insertion(+), 1 deletion(-)
 rename cyaron/{maze.py => misc.py} (100%)

diff --git a/cyaron/__init__.py b/cyaron/__init__.py
index 3b2e2d8..c6d3fc5 100644
--- a/cyaron/__init__.py
+++ b/cyaron/__init__.py
@@ -15,7 +15,7 @@
 from .graph import Edge, Graph
 from .io import IO
 from .math import *
-from .maze import *
+from .misc import *
 from .merger import Merger
 from .polygon import Polygon
 from .sequence import Sequence
diff --git a/cyaron/maze.py b/cyaron/misc.py
similarity index 100%
rename from cyaron/maze.py
rename to cyaron/misc.py