adventure.py

from copy import deepcopy
import pdb

EMPTY_CHAR = "."
PLAYER_CHAR = "x"

def change_piece_at(pos, board, new):
    board[pos[0]][pos[1]] = new


def update_player_pos(game_state, new):
    new_state = deepcopy(game_state)
    
    change_piece_at(game_state.player_pos, new_state.grid, EMPTY_CHAR)
    change_piece_at(new, new_state.grid, PLAYER_CHAR)

    new_state.player_pos = new

    return new_state

def add_to_player_pos(game_state, add):
    new_state = deepcopy(game_state)

    (old_x, old_y) = new_state.player_pos

    return update_player_pos(new_state, (old_x + add[0], old_y + add[1]))


def draw_grid(grid):
    def draw_inner(row):
        if row:
            print(row[0], end="")
            draw_inner(row[1:])
        else:
            print("")

    if grid:
        draw_inner(grid[0])
        draw_grid(grid[1:])


def on_left(game_state):
    return add_to_player_pos(game_state, (0, -1))
def on_right(game_state):
    return add_to_player_pos(game_state, (0, 1))
def on_up(game_state):
    return add_to_player_pos(game_state, (-1, 0))
def on_down(game_state):
    return add_to_player_pos(game_state, (1, 0))
def on_quit(game_state):
    new_state = deepcopy(game_state)

    new_state.is_running = False

    return new_state


input_map = {
        "left": on_left,
        "west": on_left,
        "right": on_right,
        "east": on_right,
        "up": on_up,
        "north": on_up,
        "down": on_down,
        "south": on_down,
        "quit": on_quit
}

def handle_input(game_state):
    command = input(">>")

    if command not in input_map:
        print("Unrecognised command: {}".format(command))
        return game_state
    else:
        return input_map[command](game_state)


class GameState:
    def __init__(self, size):
        self.size = size
        self.grid = [[EMPTY_CHAR for i in range(size[1])] for i in range(size[0])]
        self.player_pos = (0,0)
        self.is_running = True

def main():
    game_state = GameState((10, 10))

    while(game_state.is_running == True):
        game_state = handle_input(game_state)

        draw_grid(game_state.grid)

if __name__ == "__main__":
    main()