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import asyncio
import os
import random
from typing import List, Tuple
import discord
from discord.ext import commands
from PIL import Image
from discord import app_commands
from bot import InsufficientFundsException
from database import Database
"""NOTE: This code was found somewhere on GitHub a long time ago. I changed it a bit to work for
discord.py 2.0 and for my needs. If anyone knows who wrote this, please let me know so I can
give them credit."""
Entry = Tuple[int, int]
class Card:
suits = ["clubs", "diamonds", "hearts", "spades"]
def __init__(self, suit: str, value: int, down=False):
self.suit = suit
self.value = value
self.down = down
self.symbol = self.name[0].upper()
@property
def name(self) -> str:
"""The name of the card value."""
if self.value <= 10: return str(self.value)
else: return {
11: 'jack',
12: 'queen',
13: 'king',
14: 'ace',
}[self.value]
@property
def image(self):
return (
f"{self.symbol if self.name != '10' else '10'}"\
f"{self.suit[0].upper()}.png" \
if not self.down else "red_back.png"
)
def flip(self):
self.down = not self.down
return self
def __str__(self) -> str:
return f'{self.name.title()} of {self.suit.title()}'
def __repr__(self) -> str:
return str(self)
class Blackjack(commands.Cog):
def __init__(self, bot: commands.Bot):
self.bot = bot
self.economy = Database(bot)
async def check_bet(
self,
interaction: discord.Interaction,
bet
):
bet = int(bet)
if bet <= 0:
raise commands.errors.BadArgument()
current = (await self.economy.get_entry(interaction.user.id))[1]
if bet > current:
raise InsufficientFundsException()
@staticmethod
def hand_to_images(hand: List[Card]) -> List[Image.Image]:
return ([
Image.open(f'./code/utils/cards/{card.image}')
for card in hand
])
@staticmethod
def center(*hands: Tuple[Image.Image]) -> Image.Image:
"""Creates blackjack table with cards placed"""
bg: Image.Image = Image.open('./code/utils/table.png')
bg_center_x = bg.size[0] // 2
bg_center_y = bg.size[1] // 2
img_w = hands[0][0].size[0]
img_h = hands[0][0].size[1]
start_y = bg_center_y - (((len(hands)*img_h) + \
((len(hands) - 1) * 15)) // 2)
for hand in hands:
start_x = bg_center_x - (((len(hand)*img_w) + \
((len(hand) - 1) * 10)) // 2)
for card in hand:
bg.alpha_composite(card, (start_x, start_y))
start_x += img_w + 10
start_y += img_h + 15
return bg
def output(self, name, *hands: Tuple[List[Card]]) -> None:
self.center(*map(self.hand_to_images, hands)).save(f'./code/players/tables/{name}.png')
@staticmethod
def calc_hand(hand: List[List[Card]]) -> int:
"""Calculates the sum of the card values and accounts for aces"""
non_aces = [c for c in hand if c.symbol != 'A']
aces = [c for c in hand if c.symbol == 'A']
sum = 0
for card in non_aces:
if not card.down:
if card.symbol in 'JQK': sum += 10
else: sum += card.value
for card in aces:
if not card.down:
if sum <= 10: sum += 11
else: sum += 1
return sum
@app_commands.command()
@app_commands.describe(bet='Amount of money to bet')
async def blackjack(
self,
interaction: discord.Interaction,
bet: app_commands.Range[int, 1, None]
):
"Bet your money on a blackjack game vs. the dealer"
if f"{interaction.user.id}.png" in os.listdir("./code/players/tables"):
await interaction.response.send_message(f"{interaction.user.mention}, It appears you have a game already running in this server or another, please finish that game before starting a new one.", ephemeral=True)
else:
await self.check_bet(interaction, bet)
deck = [Card(suit, num) for num in range(2,15) for suit in Card.suits]
random.shuffle(deck) # Generate deck and shuffle it
player_hand: List[Card] = []
dealer_hand: List[Card] = []
player_hand.append(deck.pop())
dealer_hand.append(deck.pop())
player_hand.append(deck.pop())
dealer_hand.append(deck.pop().flip())
player_score = self.calc_hand(player_hand)
dealer_score = self.calc_hand(dealer_hand)
async def out_table(**kwargs) -> discord.Interaction:
self.output(f'{interaction.user.id}', dealer_hand, player_hand)
embed = discord.Embed(**kwargs)
file = discord.File(
f"./code/players/tables/{interaction.user.id}.png", filename=f"{interaction.user.id}.png"
)
embed.set_image(url=f"attachment://{interaction.user.id}.png")
try:
msg = await interaction.response.send_message(file=file, embed=embed)
except:
msg = await interaction.edit_original_response(attachments=[file], embed=embed)
reac = await interaction.original_response()
await reac.clear_reactions()
return msg
standing = False
while True:
player_score = self.calc_hand(player_hand)
dealer_score = self.calc_hand(dealer_hand)
if player_score == 21: # win condition
await self.economy.add_money(interaction.user.id, bet*2)
result = (f"Blackjack! - you win ${bet*2:,}", 'won')
break
elif player_score > 21: # losing condition
await self.economy.add_money(interaction.user.id, bet*-1)
result = (f"Player busts - you lose ${bet:,}", 'lost')
break
msg = await out_table(
title="Your Turn",
description=f"Your hand: {player_score}\n" \
f"Dealer's hand: {dealer_score}"
)
reac = await interaction.original_response()
await reac.add_reaction("🇭")
await reac.add_reaction("🇸")
buttons = {"🇭", "🇸"}
try:
reaction, _ = await self.bot.wait_for(
'reaction_add', check=lambda reaction, user:user == interaction.user and reaction.emoji in buttons, timeout=60
)
except asyncio.TimeoutError:
os.remove(f'./code/players/tables/{interaction.user.id}.png')
await interaction.followup.send(f"{interaction.user.mention} your game timed out. No money was lost or gained.")
return
if str(reaction.emoji) == "🇭":
player_hand.append(deck.pop())
continue
elif str(reaction.emoji) == "🇸":
standing = True
break
if standing:
dealer_hand[1].flip()
player_score = self.calc_hand(player_hand)
dealer_score = self.calc_hand(dealer_hand)
while dealer_score < 17: # dealer draws until 17 or greater
dealer_hand.append(deck.pop())
dealer_score = self.calc_hand(dealer_hand)
if dealer_score == 21: # winning/losing conditions
await self.economy.add_money(interaction.user.id, bet*-1)
result = (f"Dealer blackjack - you lose ${bet:,}", 'lost')
elif dealer_score > 21:
await self.economy.add_money(interaction.user.id, bet*2)
result = (f"Dealer busts - you win ${bet*2:,}", 'won')
elif dealer_score == player_score:
result = (f"Tie - you keep your money", 'kept')
elif dealer_score > player_score:
await self.economy.add_money(interaction.user.id, bet*-1)
result = (f"You lose ${bet:,}", 'lost')
elif dealer_score < player_score:
await self.economy.add_money(interaction.user.id, bet*2)
result = (f"You win ${bet*2:,}", 'won')
color = (
discord.Color.red() if result[1] == 'lost'
else discord.Color.green() if result[1] == 'won'
else discord.Color.blue()
)
if result[1] == 'won':
description=(
f"**You won ${bet*2:,}**\nYour hand: {player_score}\n" +
f"Dealer's hand: {dealer_score}"
)
elif result[1] == 'lost':
description=(
f"**You lost ${bet:,}**\nYour hand: {player_score}\n" +
f"Dealer's hand: {dealer_score}"
)
msg = await out_table(
title=result[0],
color=color,
)
os.remove(f'./code/players/tables/{interaction.user.id}.png')
async def setup(bot: commands.Bot):
await bot.add_cog(Blackjack(bot))
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