hnc-daniil/HNC/Exercises/Ship_Battle/ShipField.py

import copy
from ShootResult import ShootResult
from ShipMode import ShipMode
from ShipDirection import ShipDirection


class ShipField:

    def __init__(self):
        self.field = [' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ']

        self.ships = [4, 3, 3, 2, 2, 2, 1, 1, 1, 1]
        self.field_size = 10
        self.field_mode = ShipMode.PUT
        self.ship_size = 4
        self.ship_direction = ShipDirection.VERTICAL

    
    def __getitem__(self, item):
        if item is None:
            return None

        if type(item) is not int and item.isnumeric():
            item = int(item)

        if type(item) is int and 0 <= item < len(self.field):
            return self.field[item]

        return None


    def action(self, row, col):
        self.clear_marker()

        if self.field_mode == ShipMode.PUT:
            if self.check_ship(row, col):
                self.get_ship(row, col)

            elif self.ship_size in self.ships and self.check_possible(row, col):
                self.set_ship(row, col)

        elif self.field_mode == ShipMode.SHOOT:
            self.shoot(row, col)

    
    def target(self, row, col):
        self.clear_marker()
        
        if self.field_mode == ShipMode.PUT:
            if self.check_possible(row, col):
                if self.ship_direction == ShipDirection.VERTICAL:
                    for r in range(row, row + self.ship_size):
                        if self.ship_size in self.ships:
                            self.field[r * self.field_size + col] = "p"
                        else:
                            self.field[r * self.field_size + col] = "r"

                if self.ship_direction == ShipDirection.HORIZONTAL:
                    for c in range(col, col + self.ship_size):
                        if self.ship_size in self.ships:
                            self.field[row * self.field_size + c] = "p"
                        else:
                            self.field[row * self.field_size + c] = "r"

        
        else:
            self.field[row * self.field_size + col] = "+"

    def clear_marker(self):
        for i in range(0, len(self.field)):
            if self.field[i] == "p" or self.field[i] == "r":
                self.field[i] = ""
            
            if "+" in self.field[i]:
                self.field[i] = self.field[i].replace("+", "")
    
    def set_ship(self, row, col):
        if row < 0 or row > self.field_size:
            return
        if col < 0 or col > self.field_size:
            return
        index = row * self.field_size + col
        if self.ship_direction == ShipDirection.VERTICAL:
            if self.field_size - row < self.ship_size:
                return
            for r in range(row, row + self.ship_size):
                index = r * self.field_size + col
                self.field[index] = "1"
        if self.ship_direction == ShipDirection.HORIZONTAL:
            if self.field_size - col < self.ship_size:
                return
            for c in range(col, col + self.ship_size):
                index = row * self.field_size + c
                self.field[index] = "1"

        if self.ship_size in self.ships:
            self.ships.remove(self.ship_size)

    def get_ship(self, row, col):
        if row < 0 or row > self.field_size:
            return
        if col < 0 or col > self.field_size:
            return
        
        self.field[row * self.field_size + col] = ''
        
        ship_size = 1
        ship_direction = ShipDirection.UNKNOWN


        # check vertical
        for r in range(row + 1, self.field_size):
            if self.check_ship(r, col):
                ship_size += 1 
                ship_direction = ShipDirection.VERTICAL
                self.field[r * self.field_size + col] = ''
            else:
                break

        for r in range(row - 1, -1, -1):
            if self.check_ship(r, col):
                ship_size += 1 
                ship_direction = ShipDirection.VERTICAL
                self.field[r * self.field_size + col] = ''
            else:
                break


        if ship_direction == ShipDirection.UNKNOWN:
        # check horizontal
            for c in range(col + 1, self.field_size):
                if self.check_ship(row, c):
                    ship_size += 1 
                    ship_direction = ShipDirection.HORIZONTAL
                    self.field[row * self.field_size + c] = ''
                else:
                    break

            for c in range(col - 1, - 1, -1):
                if self.check_ship(row, c):
                    ship_size += 1 
                    ship_direction = ShipDirection.HORIZONTAL
                    self.field[row * self.field_size + c] = ''
                else:
                    break

        self.set_ship_direction(ship_direction)
        self.set_ship_size(ship_size)

        self.ships.append(ship_size)
    
    def shoot(self, row, col):
        if row < 0 or row > self.field_size - 1:
            return ShootResult.UNDEFINED
        if col < 0 or col > self.field_size - 1:
            return ShootResult.UNDEFINED
        index = row * self.field_size + col
        if (self.field[index]).strip() == "":
            self.field[index] = "0"
            return ShootResult.EMPTY
        elif (self.field[index]).strip() == "1":
            self.field[index] = "\\"
            return ShootResult.DAMAGED
        else:
            return ShootResult.UNDEFINED
         
    def check_ship(self, row, col):
        return self.field[row * self.field_size + col].strip() == '1'

    def check_possible(self, row, col):
        if self.ship_direction == ShipDirection.VERTICAL:
            if self.field_size - row >= self.ship_size:
                for r in range(row, row + self.ship_size):
                    if not self.check_blocked(r, col):
                        return False
                return True

        if self.ship_direction == ShipDirection.HORIZONTAL:
            if self.field_size - col >= self.ship_size:
                for c in range(col, col + self.ship_size):
                    if not self.check_blocked(row, c):
                        return False
                return True

        return False

    def check_blocked(self, row, col):
        for r in range(row - 1, row + 2):
            for c in range(col - 1, col + 2):
                if 0 <= r < self.field_size and 0 <= c < self.field_size:
                    cell = (self.field[r * self.field_size + c]).strip()
                    if cell != '' and cell != 'p':
                        return False
        return True

    def set_ship_size(self, value):
        if value is None:
            return
        
        if type(value) is str and value.isnumeric():
            value = int(value)

        if type(value) is int and 1 <= value <= 4:
            self.ship_size = value

    def set_ship_direction(self, value):
        if value is None:
            return
        
        if type(value) is not ShipDirection:
            return
        
        if value != ShipDirection.UNKNOWN:
            self.ship_direction = value

    def toggle_ship_direction(self):
        if self.field_mode == ShipMode.PUT:
            if self.ship_direction == ShipDirection.VERTICAL:
                self.ship_direction = ShipDirection.HORIZONTAL
            else:
                self.ship_direction = ShipDirection.VERTICAL

    def toggle_field_mode(self):
        if self.field_mode == ShipMode.PUT:
            self.field_mode = ShipMode.SHOOT
        else:
            self.field_mode = ShipMode.PUT

    def print_field(self):
        for r in range(0, self.field_size):
            blocked_string = ""
            ship_string = ""
            for c in range(0, self.field_size):
                blocked_string += str(self.check_blocked(r, c))[0] + ", "
                ship_string += self.field[r * self.field_size + c] + ', '
            print(blocked_string[:-2] + '          ' + ship_string[:-2])
        print("********************************************************************")  


    @staticmethod
    def convert_to_json(obj):
        if isinstance(obj, ShipField):
            result = copy.copy(obj.__dict__)
            result['field_mode'] = obj.field_mode.value
            result['ship_direction'] = obj.ship_direction.value
            return result