Exercice 18

Chapitre 4 - Graphes/C08_labyrinthe.py

@@ -277,5 +277,28 @@ def genere_labirinthe_aleatoire(nb_salles, max_aretes):
 
     return l
 
-print(genere_labirinthe_aleatoire(10, 10).montrer())
+#print(genere_labirinthe_aleatoire(10, 10).montrer())
 
+def inside(x, y, nb_salles):
+    return x >= 0 and x < nb_salles and y >= 0 and y < nb_salles
+
+def vrai_labyrinthe(nb_salles):
+    if nb_salles % 2 == 0: nb_salles += 1
+    nodes = [[x % 2 == 0 or y % 2 == 0 for x in range(nb_salles)] for y in range(nb_salles)]
+    visited = set([(1, 1)])
+    stack = [(1, 1)]
+    while stack:
+        x, y = stack[-1]
+        directions = [(1, 0), (-1, 0), (0, 1), (0, -1)]
+        directions = [(dx, dy) for dx, dy in directions if inside(x+dx*2, y+dy*2, nb_salles)]
+        directions = [(dx, dy) for dx, dy in directions if (x+dx*2, y+dy*2) not in visited]
+        if not directions:
+            stack.pop()
+        else:
+            dx, dy = choice(directions)
+            nodes[x+dx][y+dy] = False
+            stack.append((x+dx*2, y+dy*2))
+            visited.add((x+dx*2, y+dy*2))
+    return Labyrinthe([[Salle(node) for node in row] for row in nodes], (1, 1), (nb_salles-2, nb_salles-2))
+
+print(vrai_labyrinthe(40).montrer())