SI_2020/warehouse.py

from attributes import PackSize, PackStatus
import random
import queue
from collections import namedtuple
import itertools

Coordinates = namedtuple("Coordinates",'x y')

class CategoryData:
    def __init__(self, name, passable=False, can_store=True, location='general', pack_size=PackSize.ALL):
        self.name = name
        self.passable = passable
        self.can_store = can_store
        self.location = location
        self.pack_size = pack_size

    def __repr__(self):
        return self.name

class Pack:
    def __init__(self, size=PackSize.MEDIUM, categ='general', lays_on_field=None):
        self.size = size
        self.category = categ
        assert isinstance(lays_on_field, Tile), AssertionError("Attribute lays_on_field must be a Tile object! You know, package cannot lay in void :)")
        self.lays_on_field = lays_on_field
        self.status = self.set_status()

    def set_status(self):
        status = PackStatus.LOOSE
        if self.lays_on_field.category.name == 'Floor':
            status = PackStatus.LOOSE
        elif self.lays_on_field.category.name == 'Rack':
            status = PackStatus.STORED
        return status

CATEGORY = {
    'floor': CategoryData('Floor', True, False),  #lava
    'rack': CategoryData('Rack', False, True),
    # 'freezer': CategoryData('Freezer', False, True, location='cold_room')
}


class Warehouse:
    def __init__(self, width, length, no_of_racks, no_of_packages=0):
        self.width = width
        self.height = length
        self.tiles = self.generate_map()
        self.no_of_racks = no_of_racks
        self.no_of_packages = no_of_packages
        self.generate_racks()
        self.open_isolated_areas()
        self.packages = self.place_packages(no_of_packages)
        self.tiles[1][1] = Tile('floor', 1, 1)
    def __str__(self):
        return "Magazyn {}x{}".format(self.width, self.height)

    def generate_map(self):
        warehouse_tiles = []
        categories = list(CATEGORY.keys())
        for x in range(self.width):
            row = [Tile('floor', x, y) for y in range(self.height)]
            warehouse_tiles.append(row)
        return warehouse_tiles

    def generate_racks(self):
        q = queue.Queue()
        rack_counter = 0
        node_x, node_y = random.randrange(1, self.width-1), random.randrange(1, self.height-1)
        node = self.tiles[node_x][node_y]
        next_node = None
        self.tiles[node_x][node_y] = Tile('rack', node_x, node_y)
        q.put(node)
        while not q.empty():
            if next_node is not None:
                q.put(next_node)
            not_rack_nodes = self.get_not_rack_nodes(node_x, node_y)
            if len(not_rack_nodes) == 0:
                next_node = q.get()
                while len(self.get_not_rack_nodes(next_node.x_position, next_node.y_position)) == 0:
                    if q.empty():
                        return
                    next_node = q.get()

            else:
                next_node = random.choice(not_rack_nodes)
            current_node = next_node if next_node is not None else node
            self.break_wall(next_node, current_node)
            rack_counter += 1
            if rack_counter > self.no_of_racks:
                return
            node_x = next_node.x_position
            node_y = next_node.y_position
            self.tiles[node_x][node_y] = Tile('rack', node_x, node_y)

    def get_not_rack_nodes(self, node_x, node_y):
        adjacent_tiles = self.get_adjacent_tiles(node_x, node_y)
        possible_nodes = [line for line in adjacent_tiles if line.category.name != "Rack"]
        return possible_nodes

    def open_isolated_areas(self):
        racks = self.get_all_racks()
        for rack in racks:
            isolated = self.check_if_isolated(rack.x_position, rack.y_position)
            if isolated:
                self.tiles[rack.x_position][rack.y_position] = Tile('floor', rack.x_position, rack.y_position)
        tmp_tiles = self.tiles
        for row_number, row_tiles in enumerate(self.tiles):
            if all([(t.category.name == 'Rack') for t in row_tiles]):
                puncture_point = random.randrange(1, self.width-1)
                tmp_tiles[row_number][puncture_point] = Tile('floor', row_number, puncture_point)
        for column in range(self.height):
            column_tiles = [r[column] for r in self.tiles]
            if all([(t.category.name == 'Rack') for t in column_tiles]):
                puncture_point = random.randrange(1, self.height-1)
                tmp_tiles[puncture_point][column] = Tile('floor', row_number, puncture_point)
        self.files = tmp_tiles


    def check_if_isolated(self, x, y):
        diagonals = self.get_diagonals(x,y)
        diagonal_racks = [t for t in diagonals if t.category.name == 'Rack']
        return len(diagonal_racks) > 0

    def get_diagonals(self, x, y):
        upper_right = Coordinates(
            x + 1 if x + 1 < self.width else self.width - 1,
            y + 1 if y + 1 < self.height else self.height - 1
        )
        upper_left = Coordinates(
            x - 1 if x - 1 > 0 else 0,
            y + 1 if y + 1 < self.height else self.height - 1
        )
        bottom_right = Coordinates(
            x + 1 if x + 1 < self.width else self.width - 1,
            y - 1 if y - 1 > 0 else 0
        )
        bottom_left = Coordinates(
            x - 1 if x - 1 > 0 else 0,
            y - 1 if y - 1 > 0 else 0
        )
        diagonals = [
            self.tiles[upper_right.x][upper_right.y],
            self.tiles[upper_left.x][upper_left.y],
            self.tiles[bottom_right.x][bottom_right.y],
            self.tiles[bottom_left.x][bottom_left.y]
        ]
        return diagonals
    def get_all_racks(self):
        """:return list of Tile objects"""
        racks = []
        for x in  self.tiles:
            # row_racks = [t for t in self.tiles[x] if t.category.name == 'Rack']
            for y in x:
                if y.category.name == 'Rack':
                    racks.append(y)
        return racks


    def place_packages(self, no_of_packages):
        packages = []
        for i in range(no_of_packages):
            pack_x, pack_y = self._set_package_position()
            package_field = self.tiles[pack_x][pack_y]
            new_package = Pack(lays_on_field=package_field)
            packages.append(new_package)
        return packages
    def _set_package_position(self):
        starting_x, starting_y = random.randrange(self.width), random.randrange(self.height)
        while not isinstance(self.tiles[starting_x][starting_y], Tile):
            starting_x, starting_y = random.randrange(self.width), random.randrange(
                self.height)
        return starting_x, starting_y

    def get_adjacent_tiles(self, x, y):
        x_start = x - 2 if x - 2 >= 0 else 0
        x_stop = x + 2 if x + 2 < self.width else self.width-1
        y_start = y - 2 if y - 2 >= 0 else 0
        y_stop = y + 2 if y + 2 < self.height else self.height - 1
        adjacent_tiles = [self.tiles[x_start][y], self.tiles[x_stop][y], self.tiles[x][y_start], self.tiles[x][y_stop]]
        return adjacent_tiles

    def break_wall(self, next_node, current_node):
        wall = self.get_wall(next_node, current_node)
        self.tiles[wall.x_position][wall.y_position] = Tile("rack", wall.x_position, wall.y_position)

    def get_wall(self, next_node, current_node):
        x_relative = 0
        y_relative = 0

        if next_node.x_position > current_node.x_position:
            x_relative = 1
        elif next_node.x_position < current_node.x_position:
            x_relative = -1

        if next_node.y_position > current_node.y_position:
            y_relative = 1
        elif next_node.y_position < current_node.y_position:
            y_relative = -1
        wall_x = current_node.x_position + x_relative
        wall_y = current_node.y_position + y_relative
        wall = self.tiles[wall_x][wall_y]
        return wall

class Tile:
    def __init__(self, category, x_position, y_position):
        self.category = CATEGORY.get(category, CATEGORY['floor'])
        self.x_position = x_position
        self.y_position = y_position


    def __str__(self):
        return "Tile type: {} on position ({},{})".format(self.category, self.x_position, self.y_position)

    def __repr__(self):
        return "Tile type: {} on position ({},{})".format(self.category, self.x_position, self.y_position)