537 lines
20 KiB
Python
537 lines
20 KiB
Python
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#! /usr/bin/env python3
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# this module is under licence CC-by-sa @ Tiemen DUVILLARD 2020
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# for all questions, comments, bugs: duvillard.tiemen@gmail.com
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from random import choice, randrange
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# Representation of maze :
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# A labyrinth is a set of 2 door panels.
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# For a maze 5*5 :
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# Theory : ## Example :
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# L = [[[a, b, c, d], # vertical doors ## L = [[[1, 1, 1, 1], # vertical doors
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# [e, f, g, h], ## [1, 0, 1, 0],
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# [i, j, k, l], ## [0, 1, 0, 1],
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# [m, n, o, p], ## [0, 0, 0, 0],
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# [q, r, s, t]], ## [0, 1, 0, 0]],
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# [[A, B, C, D, E], # horizontal doors ## [[0, 0, 0, 0, 0], # horizontal doors
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# [F, G, H, I, J], ## [0, 0, 0, 0, 1],
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# [K, L, M, N, O], ## [0, 1, 1, 1, 0],
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# [P, Q, R, S, T]]] ## [0, 1, 0, 1, 1]]]
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# ##
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# ==>> ## ==>>
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# X 0 1 2 3 4 ## X 0 1 2 3 4
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# Y ┌───┬───┬───┬───┬───┐ ## Y ┌───┬───┬───┬───┬───┐
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# 0 │ ∙ a ∙ b ∙ c ∙ d ∙ │ ## 0 │ ∙ │ ∙ │ ∙ │ ∙ │ ∙ │
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# ├─A─┼─B─┼─C─┼─D─┼─E─┤ ## │ │ │ │ │ │
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# 1 │ ∙ e ∙ f ∙ g ∙ h ∙ │ ## 1 │ ∙ │ ∙ ∙ │ ∙ ∙ │
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# ├─F─┼─G─┼─H─┼─I─┼─J─┤ ## │ │ │ │ ┌───┤
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# 2 │ ∙ i ∙ j ∙ k ∙ l ∙ │ ## 2 │ ∙ ∙ │ ∙ ∙ │ ∙ │
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# ├─K─┼─L─┼─M─┼─N─┼─O─┤ ## │ ╶───┴───────┘ │
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# 3 │ ∙ m ∙ n ∙ o ∙ p ∙ │ ## 3 │ ∙ ∙ ∙ ∙ ∙ │
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# ├─P─┼─Q─┼─R─┼─S─┼─T─┤ ## │ ╶───┐ ╶───────│
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# 4 │ ∙ q ∙ r ∙ s ∙ t ∙ │ ## 4 │ ∙ ∙ │ ∙ ∙ ∙ │
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# └───┴───┴───┴───┴───┘ ## └───────┴───────────┘
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def kruskal(x, y):
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global ID
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ID = 0
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class case:
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"""Little class for union-find"""
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def __init__(self,x,y):
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self.x = x
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self.y = y
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self.is_repr = True
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self.repr = None
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global ID
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self.ID = ID
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ID += 1
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def represent(self):
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if self.is_repr:
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return self
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else:
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L = [self.repr]
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while not L[0].is_repr:
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L[0] = L[0].repr
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return L[0]
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def __eq__(self,other):
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return self.represent().ID == other.represent().ID
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def union(self,other):
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a = self.represent()
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b = other.represent()
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if not (a == b):
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b.is_repr = False
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b.repr = a
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# set of doors
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doors = []
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# verticals doors result
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verti = []
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# horizontals doors result
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horiz = []
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# set of cases
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cases = []
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## initialize vertical doors
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for j in range(y):
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l = []
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for i in range(x-1):
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l.append(1)
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doors.append([i,j,'v'])
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verti.append(l)
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## initialize horizontal doors
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for j in range(y-1):
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l = []
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for i in range(x):
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l.append(1)
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doors.append([i,j,'h'])
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horiz.append(l)
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## initialize cases
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for i in range(y):
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l = []
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for j in range(x):
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l.append(case(x,y))
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cases.append(l)
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cpt = x*y -1 # nb of openings in perfect maze
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while cpt > 0:
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# I choose a door
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idoor = randrange(len(doors))
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dx, dy, dd = doors[idoor]
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cx1, cy1 = dx, dy
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if dd == 'h' : cx2, cy2 = cx1, cy1+1
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else : cx2, cy2 = cx1+1, cy1
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C1 = cases[cy1][cx1]
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C2 = cases[cy2][cx2]
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# if the 2 cases separate by my door are not in same set
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if not C1 == C2:
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C1.union(C2)
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cpt -= 1
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# i modify my result
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if dd == "v": verti[dy][dx] = 0
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else: horiz[dy][dx] = 0
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# i delete the door
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del doors[idoor]
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return verti,horiz
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def recursive_backtrack(x, y):
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# Initialisation of my variables
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labyrinthe = []
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for i in range(y): labyrinthe.append([0] * x)
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horiz = []
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for i in range(y-1): horiz.append([1] * x)
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verti = []
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for i in range(y): verti.append([1] * (x-1))
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# I choose a random start
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X_pos = randrange(x)
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Y_pos = randrange(y)
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labyrinthe[Y_pos][X_pos] = 1
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historique = [[X_pos,Y_pos]]
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# I explore a tree with deep parcours
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while len(historique) != 0:
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X = historique[-1][0]
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Y = historique[-1][1]
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possibilite = []
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if (Y-1 >= 0) and (labyrinthe[Y-1][X] == 0): possibilite.append(0)
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if (X+1 < x) and (labyrinthe[Y][X+1] == 0): possibilite.append(1)
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if (Y+1 < y) and (labyrinthe[Y+1][X] == 0): possibilite.append(2)
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if (X-1 >= 0) and (labyrinthe[Y][X-1] == 0): possibilite.append(3)
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if len(possibilite) == 0:
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del historique[-1]
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else:
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d = choice(possibilite)
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if d == 0:
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X1,Y1 = X, Y-1
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horiz[Y-1][X] = 0
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if d == 1:
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X1,Y1 = X+1, Y
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verti[Y][X] = 0
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if d == 2:
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X1,Y1 = X, Y+1
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horiz[Y][X] = 0
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if d == 3:
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X1,Y1 = X-1, Y
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verti[Y][X-1] = 0
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labyrinthe[Y1][X1] = 1
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historique.append([X1,Y1])
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return verti, horiz
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# a empty maze
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def empty(x, y):
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verti = []
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for i in range(y):
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verti.append([0] * (x-1))
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horiz = []
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for i in range(y-1):
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horiz.append([0] * x)
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return verti, horiz
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# a full maze
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def full(x, y):
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verti = []
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for i in range(y):
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verti.append([1] * (x-1))
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horiz = []
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for i in range(y-1):
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horiz.append([1] * x)
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return verti, horiz
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class Maze:
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"""This Class define a Maze object"""
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def __init__(self, X=5, Y=5, algorithm="empty"):
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"""Use : m = Maze(X:int,Y:int, algorithm:string)"""
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self.X = X # width
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self.Y = Y # height
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self.verti = [] # table of vertical doors
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self.horiz = [] # table of horizontal doors
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if algorithm in ("kruskal","K") :
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self.verti, self.horiz = kruskal(self.X,self.Y)
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self.doors = self.nbDoors()
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self.algorithm = "kruskal"
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self.perfect = True
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elif algorithm in ("recursive_backtrack","RB") :
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self.verti, self.horiz = recursive_backtrack(self.X,self.Y)
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self.doors = self.nbDoors()
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self.algorithm = "recursive_backtrack"
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self.perfect = True
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elif algorithm in ("empty","E") :
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self.verti, self.horiz = empty(self.X,self.Y)
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self.doors = self.nbDoors()
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self.algorithm = "empty"
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self.perfect = False
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elif algorithm in ("full","F") :
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self.verti, self.horiz = full(self.X,self.Y)
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self.doors = self.nbDoors()
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self.algorithm = "full"
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self.perfect = False
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else :
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raise("Algorithm not recognized. Algorithm must be in ['kruskal','recursive_backtrack','empty','full']")
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def __str__(self):
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"""Return information about maze"""
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s = "Size of maze : {}*{}\nGenerate by : {}\nNb of doors : {}\nPerfect : {}"
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s = s.format(self.X,self.Y,self.algorithm,self.doors,self.perfect)
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return s
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def nbDoors(self):
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"""Return number of doors in my maze. If maze is perfect, it equals to (self.X-1)*(self.Y-1)"""
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S = 0
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for k in self.verti: S += sum(k)
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for k in self.horiz: S += sum(k)
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return S
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def verticalDoors(self):
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"""Iterate on vertical doors"""
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for i in range(len(self.verti)):
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for j in range(len(self.verti[i])):
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yield i,j, bool(self.verti[i][j])
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def horizontalDoors(self):
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"""Iterate on horizontal doors"""
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for i in range(len(self.horiz)):
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for j in range(len(self.horiz[i])):
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yield i,j, bool(self.horiz[i][j])
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def canMove(self, x, y, direction) :
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"""return if i can move in a direction since (x,y) """
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if direction in ["down","d",0] : # down
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if y == self.Y-1 :return False
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return not self.horiz[y][x]
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if direction in ["up","u",2] : # up
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if y == 0 : return False
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return not self.horiz[y-1][x]
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if direction in ["left","l",3] : # left
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if x == 0 : return False
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return not self.verti[y][x-1]
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if direction in ["right","r",1] : # right
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if x == self.X-1 : return False
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return not self.verti[y][x]
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return False
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def move(self, x, y, direction) :
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"""return new cord after one move in direction"""
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if direction in ["down","d",0] : # down
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return x,y+1
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if direction in ["up","u",2] : # up
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return x,y-1
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if direction in ["left","l",3] : # left
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return x-1,y
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if direction in ["right","r",1] : # right
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return x+1,y
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return x,y
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def toSquare(self):
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"""return another representation of maze, a List of List of case in {0,1} """
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RET = []
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for i in range(self.Y*2+1):
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l = []
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for j in range(self.X*2+1):
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if i == 0 or i == self.Y*2 or j == 0 or j == self.X*2 :
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l.append(1)
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else :
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if (i%2==0 and j%2==0) :
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l.append(1)
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elif (i%2==1 and j%2==1):
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l.append(0)
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elif (i%2==0 and j%2==1):
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l.append(self.horiz[(i-1)//2][(j-1)//2])
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elif (i%2==1 and j%2==0):
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l.append(self.verti[(i-1)//2][(j-1)//2])
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RET.append(l)
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return RET
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def solve(self, xa, ya, xb, yb):
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"""return a list of direction for link (xa,ya) -> (xb,yb). Null"""
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Sol = []
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Pile = [(xa,ya)]
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laby = []
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for i in range(self.Y):
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laby.append(['new'] * self.X)
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while Pile[-1] != (xb,yb) and len(Pile) != 0:
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pos = Pile[-1]
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x,y = pos[0],pos[1]
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if laby[y][x] == 'new':
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possibilite = []
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for d in ['down',"up","left","right"]:
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if self.canMove(pos[0],pos[1],d) :
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nx,ny = self.move(pos[0],pos[1],d)
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if laby[ny][nx] == 'new' :
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possibilite.append(d)
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if len(possibilite) == 0:
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laby[y][x] = "old"
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else :
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laby[y][x] = possibilite
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elif laby[y][x] == "old":
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del Pile[-1]
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del Sol[-1]
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elif type(laby[y][x]) == list:
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if len(laby[y][x]) == 0:
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laby[y][x] = "old"
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else:
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ichoix = randrange(len(laby[y][x]))
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choix = laby[y][x][ichoix]
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Pile.append(self.move(x,y,choix))
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Sol.append(choix)
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del laby[y][x][ichoix]
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return Sol
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def save(self):
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"""Return a string contain's all information. it can be save in file, print, etc.."""
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s = "{};{};{};{};{};{};{}".format(self.X, self.Y, self.doors, self.algorithm, self.perfect, self.verti, self.horiz)
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return s
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def load(self, st):
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"""Load a Maze since a string of format save"""
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cont = st.split(";")
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self.X = int(cont[0])
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self.Y = int(cont[1])
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self.doors = int(cont[2])
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self.algorithm = cont[3]
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self.perfect = bool(cont[4])
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self.verti = cont[5].split("], [")
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for i in range(len(self.verti)):
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self.verti[i] = self.verti[i].split(',')
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for j in range(len(self.verti[i])):
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self.verti[i][j] = self.verti[i][j].replace("[","")
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self.verti[i][j] = self.verti[i][j].replace("]","")
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self.verti[i][j] = self.verti[i][j].replace(" ","")
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self.verti[i][j] = int(self.verti[i][j])
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self.horiz = cont[6].split("], [")
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for i in range(len(self.horiz)):
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self.horiz[i] = self.horiz[i].split(',')
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for j in range(len(self.horiz[i])):
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self.horiz[i][j] = self.horiz[i][j].replace("[","")
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self.horiz[i][j] = self.horiz[i][j].replace("]","")
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self.horiz[i][j] = self.horiz[i][j].replace(" ","")
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self.horiz[i][j] = int(self.horiz[i][j])
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def toTxt(self, centre=False, coord=False, basic= False):
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"""return a txt representation of maze in ASCII art"""
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if type(centre) == bool:
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if centre : centre = "*"
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else : centre = " "
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else:
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centre = centre[0]
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if basic :
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if coord:
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R = " X"
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for i in range(self.X):
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R += " {} ".format(i%10)
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R += "\n"
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R += "Y +"
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r = "0 |"
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else:
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R = "+"
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r = "|"
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for j in range(self.X-1):
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if self.verti[0][j]:
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R += "---+"
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r += " {} |".format(centre)
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else:
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R += "----"
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r += " {} ".format(centre)
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R += "---+\n"
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r += " {} |\n".format(centre)
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R += r
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for i in range(self.Y-1):
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if coord:
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if self.horiz[i][0]:
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l1 = " +"
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else:
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l1 = " |"
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l2 = "{} |".format((i+1)%10)
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else:
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if self.horiz[i][0]:
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l1 = "+"
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else:
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l1 = "|"
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l2 = "|"
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for j in range(self.X-1):
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inter = "+"
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if self.horiz[i][j] and self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = "-"
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if not self.horiz[i][j] and not self.horiz[i][j+1] and self.verti[i][j] and self.verti[i+1][j] : inter = "|"
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if not self.horiz[i][j] and not self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = " "
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if self.horiz[i][j]:
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l1 += "---"+inter
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else:
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l1 += " "+inter
|
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if self.verti[i+1][j]:
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l2 += " {} |".format(centre)
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else:
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l2 += " {} ".format(centre)
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if self.horiz[i][-1]:
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l1 += "---+"
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else:
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l1 += " |"
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l2 += " {} |".format(centre)
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R += l1 + "\n"
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R += l2 + "\n"
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if coord:
|
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r = " +"
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else:
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r = "+"
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for j in range(self.X-1):
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if self.verti[-1][j]:
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r += "---+"
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else:
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r += "----"
|
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r += "---+"
|
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R += r
|
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return R
|
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|
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|
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else :
|
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if coord:
|
||
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R = " X"
|
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for i in range(self.X):
|
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R += " {} ".format(i%10)
|
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R += "\n"
|
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R += "Y ┌"
|
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r = "0 │"
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else:
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R = "┌"
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r = "│"
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for j in range(self.X-1):
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||
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if self.verti[0][j]:
|
||
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R += "───┬"
|
||
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r += " {} │".format(centre)
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||
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else:
|
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R += "────"
|
||
|
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r += " {} ".format(centre)
|
||
|
|
R += "───┐\n"
|
||
|
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r += " {} │\n".format(centre)
|
||
|
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R += r
|
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for i in range(self.Y-1):
|
||
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if coord:
|
||
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if self.horiz[i][0]:
|
||
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l1 = " ├"
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else:
|
||
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l1 = " │"
|
||
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l2 = "{} │".format((i+1)%10)
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||
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else:
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||
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if self.horiz[i][0]:
|
||
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l1 = "├"
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else:
|
||
|
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l1 = "│"
|
||
|
|
l2 = "│"
|
||
|
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for j in range(self.X-1):
|
||
|
|
# 4 door
|
||
|
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if self.horiz[i][j] and self.horiz[i][j+1] and self.verti[i][j] and self.verti[i+1][j] : inter = "┼"
|
||
|
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# 3 door
|
||
|
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if self.horiz[i][j] and self.horiz[i][j+1] and self.verti[i][j] and not self.verti[i+1][j] : inter = "┴"
|
||
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if self.horiz[i][j] and self.horiz[i][j+1] and not self.verti[i][j] and self.verti[i+1][j] : inter = "┬"
|
||
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if self.horiz[i][j] and not self.horiz[i][j+1] and self.verti[i][j] and self.verti[i+1][j] : inter = "┤"
|
||
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if not self.horiz[i][j] and self.horiz[i][j+1] and self.verti[i][j] and self.verti[i+1][j] : inter = "├"
|
||
|
|
# 2 door
|
||
|
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if self.horiz[i][j] and self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = "─"
|
||
|
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if self.horiz[i][j] and not self.horiz[i][j+1] and self.verti[i][j] and not self.verti[i+1][j] : inter = "┘"
|
||
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if not self.horiz[i][j] and self.horiz[i][j+1] and self.verti[i][j] and not self.verti[i+1][j] : inter = "└"
|
||
|
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if self.horiz[i][j] and not self.horiz[i][j+1] and not self.verti[i][j] and self.verti[i+1][j] : inter = "┐"
|
||
|
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if not self.horiz[i][j] and self.horiz[i][j+1] and not self.verti[i][j] and self.verti[i+1][j] : inter = "┌"
|
||
|
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if not self.horiz[i][j] and not self.horiz[i][j+1] and self.verti[i][j] and self.verti[i+1][j] : inter = "│"
|
||
|
|
# 1 door
|
||
|
|
if not self.horiz[i][j] and not self.horiz[i][j+1] and not self.verti[i][j] and self.verti[i+1][j] : inter = "╷"
|
||
|
|
if not self.horiz[i][j] and not self.horiz[i][j+1] and self.verti[i][j] and not self.verti[i+1][j] : inter = "╵"
|
||
|
|
if not self.horiz[i][j] and self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = "╶"
|
||
|
|
if self.horiz[i][j] and not self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = "╴"
|
||
|
|
# 0 door
|
||
|
|
if not self.horiz[i][j] and not self.horiz[i][j+1] and not self.verti[i][j] and not self.verti[i+1][j] : inter = " "
|
||
|
|
if self.horiz[i][j]:
|
||
|
|
l1 += "───"+inter
|
||
|
|
else:
|
||
|
|
l1 += " "+inter
|
||
|
|
|
||
|
|
if self.verti[i+1][j]:
|
||
|
|
l2 += " {} │".format(centre)
|
||
|
|
else:
|
||
|
|
l2 += " {} ".format(centre)
|
||
|
|
if self.horiz[i][-1]:
|
||
|
|
l1 += "───┤"
|
||
|
|
else:
|
||
|
|
l1 += " │"
|
||
|
|
l2 += " {} │".format(centre)
|
||
|
|
|
||
|
|
R += l1 + "\n"
|
||
|
|
R += l2 + "\n"
|
||
|
|
if coord:
|
||
|
|
r = " └"
|
||
|
|
else:
|
||
|
|
r = "└"
|
||
|
|
for j in range(self.X-1):
|
||
|
|
if self.verti[-1][j]:
|
||
|
|
r += "───┴"
|
||
|
|
else:
|
||
|
|
r += "────"
|
||
|
|
r += "───┘"
|
||
|
|
R += r
|
||
|
|
return R
|