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import typing
from random import random
from discord.ext import commands
GameBoard = typing.List[typing.List[typing.Union[str, int]]]
DictOfGames = typing.Dict[int, typing.Dict]
class CordConverter(commands.Converter):
"""Converter for cords."""
async def convert(self, ctx, cord: str) -> typing.Tuple[int, int]:
"""Take in a cord string and turn it into x, y"""
if not 2 <= len(cord) <= 3:
raise commands.ArgumentParsingError()
value1 = cord[0]
value2 = cord[1:]
if not value2.isdigit():
raise commands.ArgumentParsingError()
x = ord(value1) - 97
y = int(value2) - 1
if (not 0 <= x <= 9) or (not 0 <= y <= 9):
raise commands.ArgumentParsingError()
return x, y
class Minesweeper(commands.Cog):
"""Play a game of minesweeper."""
def __init__(self, bot: commands.Bot) -> None:
self.games: DictOfGames = {} # Store the currently running games
@staticmethod
def is_bomb(cell: typing.Union[str, int]) -> int:
"""Returns 1 if `cell` is a bomb if not 0"""
return cell == "bomb"
def generate_board(self, bomb_chance: float) -> GameBoard:
"""Generate a 2d array for the board."""
board: GameBoard = [["bomb" if random() <= bomb_chance else "number" for _ in range(10)] for _ in range(10)]
for y, row in enumerate(board):
for x, cell in enumerate(row):
if cell == "number":
# calculate bombs near it
bombs = 0
for x_ in [x - 1, x, x + 1]:
for y_ in [y - 1, y, y + 1]:
if x_ != -1 and x_ != 10 and y_ != -1 and y_ != 10 and board[y_][x_] == "bomb":
bombs += 1
board[y][x] = bombs
return board
@staticmethod
def format_for_discord(board: GameBoard) -> str:
"""Format the board to a string for discord."""
mapping = {
0: ":stop_button:",
1: ":one:",
2: ":two:",
3: ":three:",
4: ":four:",
5: ":five:",
6: ":six:",
7: ":seven:",
8: ":eight:",
9: ":nine:",
10: ":keycap_ten:",
"bomb": ":bomb:",
"hidden": ":grey_question:",
"flag": ":triangular_flag_on_post:"
}
discord_msg = (
":stop_button: :regional_indicator_a::regional_indicator_b::regional_indicator_c:"
":regional_indicator_d::regional_indicator_e::regional_indicator_f::regional_indicator_g:"
":regional_indicator_h::regional_indicator_i::regional_indicator_j:\n\n"
)
rows: typing.List[str] = []
for row_number, row in enumerate(board):
new_row = mapping[row_number + 1] + " "
for cell in row:
new_row += mapping[cell]
rows.append(new_row)
discord_msg += "\n".join(rows)
return discord_msg
@commands.command(name="minesweeper")
async def minesweeper_command(self, ctx: commands.Context, bomb_chance: float = .2) -> None:
"""Start a game of minesweeper."""
if ctx.author.id in self.games.keys(): # Player is already playing
msg = await ctx.send(f"{ctx.author.mention} you already have a game running")
await msg.delete(delay=2)
await ctx.message.delete(delay=2)
return
# Add game to list
board: GameBoard = self.generate_board(bomb_chance)
revealed_board: GameBoard = [["hidden" for _ in range(10)] for _ in range(10)]
await ctx.send(f"{ctx.author.mention} is playing minesweeper")
chat_msg = await ctx.send(self.format_for_discord(revealed_board))
await ctx.author.send("play by typing: `.reveal xy [xy]` or `.flag xy [xy]` \n"
"close the game with `.end`\n"
"cords must be in format `<letter><number>`")
dm_msg = await ctx.author.send(self.format_for_discord(revealed_board))
self.games[ctx.author.id] = {
"board": board,
"revealed": revealed_board,
"dm_msg": dm_msg,
"chat_msg": chat_msg
}
async def reload_board(self, ctx: commands.Context) -> None:
"""Update both playing boards."""
game = self.games[ctx.author.id]
await game["dm_msg"].delete()
game["dm_msg"] = await ctx.author.send(self.format_for_discord(game["revealed"]))
await game["chat_msg"].edit(content=self.format_for_discord(game["revealed"]))
@commands.dm_only()
@commands.command(name="flag")
async def flag_command(self, ctx: commands.Context, *cords: CordConverter) -> None:
"""Place multiple flags on the board"""
board: GameBoard = self.games[ctx.author.id]["revealed"]
for x, y in cords:
if board[y][x] == "hidden":
board[y][x] = "flag"
await self.reload_board(ctx)
async def lost(self, ctx: commands.Context) -> None:
"""The player lost the game"""
game = self.games[ctx.author.id]
game["revealed"] = game["board"]
await self.reload_board(ctx)
await ctx.author.send(":fire: You lost :fire: ")
await game["chat_msg"].channel.send(f":fire: {ctx.author.mention} just lost Minesweeper! :fire:")
del self.games[ctx.author.id]
async def won(self, ctx: commands.Context) -> None:
"""The player won the game"""
game = self.games[ctx.author.id]
game["revealed"] = game["board"]
await self.reload_board(ctx)
await ctx.author.send(":tada: You won! :tada: ")
await game["chat_msg"].channel.send(f":tada: {ctx.author.mention} just won Minesweeper! :tada:")
del self.games[ctx.author.id]
def reveal_zeros(self, revealed: GameBoard, board: GameBoard, x: int, y: int) -> None:
"""Used when a 0 is encountered to do a flood fill"""
for x_ in [x - 1, x, x + 1]:
for y_ in [y - 1, y, y + 1]:
if x_ == -1 or x_ == 10 or y_ == -1 or y_ == 10 or revealed[y_][x_] != "hidden":
continue
revealed[y_][x_] = board[y_][x_]
if board[y_][x_] == 0:
self.reveal_zeros(revealed, board, x_, y_)
async def check_if_won(self, ctx, revealed: GameBoard, board: GameBoard) -> bool:
"""Checks if a player has won"""
for x_ in range(10):
for y_ in range(10):
if revealed[y_][x_] == "hidden" and board[y_][x_] != "bomb":
return True
else:
await self.won(ctx)
return False
async def reveal_one(self, ctx: commands.Context, revealed: GameBoard, board: GameBoard, x: int, y: int) -> bool:
"""Reveal one square."""
revealed[y][x] = board[y][x]
if board[y][x] == "bomb":
await self.lost(ctx)
return False
elif board[y][x] == 0:
self.reveal_zeros(revealed, board, x, y)
return await self.check_if_won(ctx, revealed, board)
@commands.dm_only()
@commands.command(name="reveal")
async def reveal_command(self, ctx: commands.Context, *cords: CordConverter) -> None:
"""Reveal multiple cells"""
game = self.games[ctx.author.id]
revealed: GameBoard = game["revealed"]
board: GameBoard = game["board"]
reload_board = True
for x, y in cords:
if not await self.reveal_one(ctx, revealed, board, x, y):
reload_board = False
if reload_board:
await self.reload_board(ctx)
@commands.command(name="end")
async def end_command(self, ctx: commands.Context):
"""End the current game"""
game = self.games[ctx.author.id]
game["revealed"] = game["board"]
await self.reload_board(ctx)
await ctx.author.send(":no_entry: you canceled the game :no_entry:")
await game["chat_msg"].channel.send(f"{ctx.author.mention} just canceled Minesweeper.")
del self.games[ctx.author.id]
def setup(bot: commands.Bot) -> None:
"""Cog load."""
bot.add_cog(Minesweeper(bot))
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