Update Minesweeper.

src/freegames/minesweeper_plus.py

@@ -0,0 +1,129 @@
+"""Minesweeper
+
+Exercises
+
+1. What does the `seed(0)` function call do?
+2. Change the number of bombs on the grid.
+3. Change the size of the grid.
+"""
+
+from random import randrange, seed
+from turtle import *
+
+from freegames import floor, square
+
+seed(0)
+bombs = {}
+shown = {}
+counts = {}
+
+# 参数设置
+grid_size = 10  # Grid Size
+num_bombs = 20  # No. Mines
+cell_size = 50  # Cell Size
+colors = { # Color Setup
+    0: 'white',
+    1: 'blue',
+    2: 'green',
+    3: 'red',
+    4: 'purple',
+    5: 'maroon',
+    6: 'turquoise',
+    7: 'black',
+    8: 'gray'
+}
+
+def initialize():
+    """Initialize `bombs`, `counts`, and `shown` grids."""
+    for x in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+        for y in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+            bombs[x, y] = False
+            shown[x, y] = False
+            counts[x, y] = -1
+
+    for _ in range(num_bombs):
+        while True:
+            x = randrange(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size)
+            y = randrange(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size)
+            if not bombs[x, y]:
+                bombs[x, y] = True
+                break
+
+    for x in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+        for y in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+            total = 0
+            for i in (-cell_size, 0, cell_size):
+                for j in (-cell_size, 0, cell_size):
+                    if i == 0 and j == 0:
+                        continue
+                    total += bombs.get((x + i, y + j), 0)
+            counts[x, y] = total
+
+
+def stamp(x, y, text, display_color=False):
+    """Display `text` at coordinates `x` and `y`."""
+    square(x, y, cell_size, 'white')
+    if not display_color:
+        color('black')
+    else:
+        color(colors[counts[x, y]])
+    write(text, font=('Arial', cell_size // 2, 'normal'))
+
+
+def draw():
+    """Draw the initial board grid."""
+    for x in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+        for y in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+            stamp(x, y, '?')
+            # 绘制网格线
+            for i in range(x, x + cell_size + 1):
+                goto(i, y)
+                goto(i, y + cell_size)
+            for j in range(y, y + cell_size + 1):
+                goto(x, j)
+                goto(x + cell_size, j)
+
+
+def end():
+    """Draw the bombs as X's on the grid."""
+    for x in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+        for y in range(-grid_size // 2 * cell_size, grid_size // 2 * cell_size, cell_size):
+            if bombs[x, y]:
+                stamp(x, y, 'X')
+
+
+def tap(x, y):
+    """Respond to screen click at `x` and `y` coordinates."""
+    x = floor(x, cell_size)
+    y = floor(y, cell_size)
+
+    if bombs[x, y]:
+        end()
+        return
+
+    pairs = [(x, y)]
+
+    while pairs:
+        x, y = pairs.pop()
+        if counts[x, y] == 0:
+            color(colors[counts[x, y]])
+            square(x, y, cell_size, colors[counts[x, y]])
+        else:
+            stamp(x, y, counts[x, y], display_color=True)
+        shown[x, y] = True
+
+        if counts[x, y] == 0:
+            for i in (-cell_size, 0, cell_size):
+                for j in (-cell_size, 0, cell_size):
+                    pair = x + i, y + j
+                    if not shown.get(pair, False):
+                        pairs.append(pair)
+
+
+setup(cell_size * grid_size + 100, cell_size * grid_size + 100, 370, 0)
+hideturtle()
+tracer(False)
+initialize()
+draw()
+onscreenclick(tap)
+done()