370 lines
11 KiB
Python
370 lines
11 KiB
Python
import pyglet
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from pyglet.window import key
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import re
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import sys
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import random
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# constants
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TILE_SIZE_X = 16
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TILE_SIZE_Y = 16
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MIN_LEAF_SIZE = 8
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# UP, DOWN, LEFT, RIGHT
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DX = [0, 0, -1, 1]
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DY = [-1, 1, 0, 0]
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BACKWARD = [1, 0, 3, 2]
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class Leaf:
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""" Leaf of the BSP """
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def __init__(self, x, y, w, h, id):
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self.id = id
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self.x = x
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self.y = y
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self.width = w
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self.height = h
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self.left_leaf = None
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self.right_leaf = None
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def print_leaf(self):
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print('[Leaf]' + str(self.id) + ': (' + str(self.x) + '), (' + str(self.y) + ')' +
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' - ' + str(self.width) + 'x' + str(self.height))
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def is_terminal(self):
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""" Returns True if the leave has no children """
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if self.left_leaf or self.right_leaf:
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return False
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return True
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def split(self):
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"""
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:return: True if the leaf has been split
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"""
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# self.print_leaf()
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# choose direction
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# TODO: if leaf is not so square, split along the long side
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# if width > XX% height (25, 33 ?) -> split vertical
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if random.random() < 0.5:
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# x
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if self.width < MIN_LEAF_SIZE * 2: # leaf is too small
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return False
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split_point = random.randint(MIN_LEAF_SIZE, self.width - MIN_LEAF_SIZE)
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next_id = self.id + 10 + 2 * (self.id % 10)
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self.left_leaf = Leaf(self.x, self.y, split_point, self.height, next_id)
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self.right_leaf = Leaf(self.x + split_point, self.y, self.width - split_point, self.height, next_id + 1)
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else:
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# y
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if self.height < MIN_LEAF_SIZE * 2: # leaf is too small
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return False
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split_point = random.randint(MIN_LEAF_SIZE, self.height - MIN_LEAF_SIZE)
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next_id = self.id + 10 + 2 * (self.id % 10)
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self.left_leaf = Leaf(self.x, self.y, self.width, split_point, next_id)
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self.right_leaf = Leaf(self.x, self.y + split_point, self.width, self.height - split_point, next_id + 1)
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return True
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class Room:
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""" room """
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def __init__(self, x, y, w, h, id):
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self.x = x
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self.y = y
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self.width = w
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self.height = h
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self.id = id
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self.print_room()
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def print_room(self):
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print('[room]' + str(self.id) + ': (' + str(self.x) + '), (' + str(self.y) + ')' +
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' - ' + str(self.width) + 'x' + str(self.height))
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def draw_map(self, tilemap):
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# first wall
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for x in range(0, self.width):
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tilemap[self.x + x][self.y] = Level.TILE_WALL
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# middle
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for y in range(1, self.height - 1):
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tilemap[self.x][self.y + y] = Level.TILE_WALL
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for x in range(1, self.width - 1):
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tilemap[self.x + x][self.y + y] = Level.TILE_GROUND
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tilemap[self.x ++ self.width - 1][self.y + y] = Level.TILE_WALL
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# end
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for x in range(0, self.width):
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tilemap[self.x + x][self.y + self.height - 1] = Level.TILE_WALL
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def center(self):
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cx = round(self.x + self.width / 2)
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cy = round(self.y + self.height / 2)
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return cx, cy
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def is_inside(self, x, y):
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if self.x < x < self.x + self.width \
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and self.y < y < self.y + self.height:
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return True
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return False
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class Level:
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TILE_WALL = 0
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TILE_ROAD = 1
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TILE_GROUND = 2
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TILE_HALLWAY = 3
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def __init__(self, sizex, sizey, seed, tile_file=None):
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self.sizex, self.sizey = sizex, sizey
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self.tileset = []
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self.tilemap = []
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if tile_file:
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self.load_tileset(tile_file)
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self.tree = None
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self.rooms = []
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self.regenerate()
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self.seed = seed
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self.grid = 0
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def load_tileset(self, tile_file):
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resource_file = open(tile_file)
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line = resource_file.readline().strip()
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while line:
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image_file = re.compile('\d: ').split(line)[1]
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print('loading tile: ' + str(image_file))
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self.tileset.append(pyglet.resource.image(image_file))
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line = resource_file.readline().strip()
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resource_file.close()
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def generate_tree(self):
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# init tree
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tree = [Leaf(0, 0, self.sizex, self.sizey, 0)]
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# split leaves until none succeed
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# Lists are ordered. Tree will be created and travel from left to right
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for l in tree:
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if l.split():
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tree.append(l.left_leaf)
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tree.append(l.right_leaf)
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return tree
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def generate_rooms(self, leaf, tilemap, room_list):
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"""
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generate rooms inside partitioned space
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:return: a list of generated rooms
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"""
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if leaf.left_leaf:
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self.generate_rooms(leaf.left_leaf, tilemap, room_list)
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if leaf.right_leaf:
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self.generate_rooms(leaf.right_leaf, tilemap, room_list)
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if not leaf.left_leaf and not leaf.right_leaf:
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room = self.generate_room(leaf, tilemap)
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room_list.append(room)
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return room_list
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def generate_room(self, leaf, tilemap):
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# Leave space for walls
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x = random.randint(leaf.x + 1, leaf.x + 2)
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y = random.randint(leaf.y + 1, leaf.y + 2)
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w = random.randint(MIN_LEAF_SIZE / 2, leaf.width - 2)
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h = random.randint(MIN_LEAF_SIZE / 2, leaf.height - 2)
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r = Room(x, y, w, h, leaf.id)
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r.draw_map(tilemap)
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return r
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def regenerate(self):
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"""" generate a new level """
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self.tree = self.generate_tree()
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# initialize tilemap with road/ground
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self.tilemap = [[self.TILE_GROUND for y in range(0, self.sizey)] for x in range(0, self.sizex)]
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# create rooms from partitions
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self.rooms = self.generate_rooms(self.tree[0], self.tilemap, [])
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self.generate_graphviz(self.tree[0])
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self.generate_tunnels()
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def draw_map(self):
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for y in range(0, self.sizey):
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for x in range(0, self.sizex):
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self.tileset[self.tilemap[x][y]].blit(x*TILE_SIZE_X, y*TILE_SIZE_Y)
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if self.grid:
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for x in range(0, self.sizex):
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pyglet.graphics.draw(2, pyglet.gl.GL_LINES,
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('v2i', (x*TILE_SIZE_X, 0, x*TILE_SIZE_X, self.sizey*TILE_SIZE_Y)),
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('c3f', (0, 0, 1)*2 ) )
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for y in range(0, self.sizey):
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pyglet.graphics.draw(2, pyglet.gl.GL_LINES,
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('v2i', (0, y * TILE_SIZE_Y, self.sizex * TILE_SIZE_X, y * TILE_SIZE_Y)),
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('c3f', (0, 0, 1)*2 ) )
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def dump_tilemap(self):
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for y in range(0, self.sizey):
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for x in range(0, self.sizex):
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print(self.tilemap[x][y], end="")
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print("")
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def generate_tunnels(self):
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""" carve tunnels in the space left by the rooms """
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#self.carve_tunnel(2, 2)
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# start some random carvers
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for i in range(0, 1):
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randx = random.randint(0, self.sizex-1)
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randy = random.randint(0, self.sizey-1)
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while not self.carvable(randx, randy, -1):
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randx = random.randint(0, self.sizex-1)
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randy = random.randint(0, self.sizey-1)
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self.carve_tunnel(randx, randy)
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def carve_tunnel(self, startx, starty):
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""" carve a tunnel from (startx, starty) """
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print("start tunnel at (" + str(startx) + ", " + str(starty) + ")")
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# carve
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self.tilemap[startx][starty] = self.TILE_HALLWAY
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# construct direction list
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dir_list = [0, 1, 2, 3]
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while len(dir_list) > 0:
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# choose random direction
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direction = int(random.choice(dir_list))
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# print("direction chosen " + str(direction))
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newx = startx + DX[direction]
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newy = starty + DY[direction]
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if self.carvable(newx, newy, direction):
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self.carve_tunnel(newx, newy)
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# self.draw_map()
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# remove this direction from the list
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dir_list.remove(direction)
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def carvable(self, x, y, d):
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if x < 0 or x > self.sizex - 1:
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return False
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if y < 0 or y > self.sizey - 1:
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return False
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print("trying (" + str(x) + ", " + str(y) + "): " + str(self.tilemap[x][y]))
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if self.tilemap[x][y] != self.TILE_GROUND:
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return False
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# check if in a room
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for r in self.rooms:
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if r.is_inside(x, y):
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return False
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# prevent hallway from touching each other
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check_dir = [0, 1, 2, 3]
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# remove_opposite if we have a direction
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if d != -1:
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check_dir.remove(BACKWARD[d])
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for dir in check_dir:
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testx = x + DX[dir]
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testy = y + DY[dir]
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print("checking: (" + str(x) + ", " + str(y) + ") dir: " + str(dir))
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if 0 < testx < self.sizex-1:
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if 0 < testy < self.sizey-1:
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print("tile: " + str(self.tilemap[testx][testy]))
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if self.tilemap[testx][testy] == self.TILE_HALLWAY:
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return False
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return True
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def generate_graphviz(self, leaf):
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""" generate a dot file for graphviz representation of rooms tree"""
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filename='bsp.dot'
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f = open(filename, 'w+t')
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f.write("digraph BST {\n")
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self.generate_graphviz_sub(leaf, f)
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f.write("}")
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f.close()
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def generate_graphviz_sub(self, leaf, f):
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f.write("\n\tl" + str(leaf.id) + " [label = " + str(leaf.id) + "];\n")
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if leaf.left_leaf:
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f.write("\tl" + str(leaf.id )+ " -> l" + str(leaf.left_leaf.id) + ";\n")
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self.generate_graphviz_sub(leaf.left_leaf, f)
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if leaf.right_leaf:
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f.write("\tl" + str(leaf.id) + " -> l" + str(leaf.right_leaf.id) + ";\n")
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self.generate_graphviz_sub(leaf.right_leaf, f)
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##
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# main
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##
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# main window
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window = pyglet.window.Window()
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@window.event
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def on_key_press(symbol, modifiers):
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# TODO: ugly hack
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global level
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if symbol == key.Q:
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print('Will quit')
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sys.exit(0)
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if symbol == key.R:
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print('Regeneration')
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level.seed = init_random()
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level.regenerate()
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window.invalid = True
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if symbol == key.D:
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level.dump_tilemap()
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if symbol == key.G:
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level.grid ^= 1
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elif symbol == key.LEFT:
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print('Left arrow')
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elif symbol == key.ENTER:
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print('Enter !')
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@window.event
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def on_draw():
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window.clear()
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level.draw_map()
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label.draw()
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def init_random():
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if len(sys.argv) > 1:
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seed = int(sys.argv[1])
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else:
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seed = random.randint(0, sys.maxsize)
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print("Using seed: " + str(seed))
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random.seed(seed)
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return seed
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genseed = init_random()
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label_txt = 'Plop World seed: ' + str(genseed)
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label = pyglet.text.Label(label_txt, x=window.width*5/6, y=window.height*5/6, anchor_x='center', anchor_y='center',
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multiline=True, width=window.width - window.width*5/6)
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level = Level(30, 30, genseed, 'tiles.txt')
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pyglet.app.run()
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