Question:

Adding cooldown for user tries to farm XP-discord.py

Problem:

I'm working on a leveling bot. I found a major issue with gaining XP, and it can be abused extremely easily. I want it to have a cooldown after a user sends a message, so when a user spams in a channel to farm XP, they have a .5-second cooldown for each message, to prevent spam. If you spam a lot of messages, you can easily get to the #1 spot, and I don't want that to happen. Everything works with it, the XP gaining, leaderboard, and the level-up message. I've looked on the internet for an answer to this, and none of them helped. Does anyone know? Please and thank you!!! :)

Code:

@bot.event

async def on_message(message):

if not message.author.bot:

# specify the encoding as utf-8 when opening the file

with open('level.json','r', encoding='utf-8') as f:

users = json.load(f)

await update_data(users, message.author,message.guild)

await add_experience(users, message.author, 4, message.guild)

await level_up(users, message.author,message.channel, message.guild)

# specify the encoding as utf-8 when writing the file

with open('level.json','w', encoding='utf-8') as f:

json.dump(users, f)

await bot.process_commands(message)

async def update_data(users, user,server):

if not str(server.id) in users:

users[str(server.id)] = {}

if not str(user.id) in users[str(server.id)]:

users[str(server.id)][str(user.id)] = {}

users[str(server.id)][str(user.id)]['experience'] = 0

users[str(server.id)][str(user.id)]['level'] = 1

elif not str(user.id) in users[str(server.id)]:

users[str(server.id)][str(user.id)] = {}

users[str(server.id)][str(user.id)]['experience'] = 0

users[str(server.id)][str(user.id)]['level'] = 1

async def add_experience(users, user, exp, server):

users[str(user.guild.id)][str(user.id)]['experience'] += exp

async def level_up(users, user, channel, server):

experience = users[str(user.guild.id)][str(user.id)]['experience']

lvl_start = users[str(user.guild.id)][str(user.id)]['level']

lvl_end = int(experience ** (1/4))

if str(user.guild.id) != '757383943116030074':

if lvl_start < lvl_end:

await channel.send(':fire: {} has leveled up to **Level {}!**'.format(user.mention, lvl_end))

users[str(user.guild.id)][str(user.id)]['level'] = lvl_end

embed=discord.Embed(title=':fire: {} has leveled up to **Level {}!**'.format(user.mention, lvl_end), color=0x38ff6a)

await bot.get_channel(log_channel_id).send(embed=embed)

@bot.command(aliases = ['rank','lvl'])

async def level(ctx,member: discord.Member = None):

if not member:

user = ctx.message.author

# specify the encoding as utf-8 when opening the file

with open('level.json','r', encoding='utf-8') as f:

users = json.load(f)

lvl = users[str(ctx.guild.id)][str(user.id)]['level']

exp = users[str(ctx.guild.id)][str(user.id)]['experience']

embed = discord.Embed(title = 'Level {}'.format(lvl), description = f"{exp} XP " ,color = discord.Color.green())

embed.set_author(name = ctx.author, icon_url = ctx.author.avatar.url)

await ctx.send(embed = embed)

else:

# specify the encoding as utf-8 when opening the file

with open('level.json','r', encoding='utf-8') as f:

users = json.load(f)

lvl = users[str(ctx.guild.id)][str(member.id)]['level']

exp = users[str(ctx.guild.id)][str(member.id)]['experience']

embed = discord.Embed(title = 'Level {}'.format(lvl), description = f"{exp} XP" ,color = discord.Color.green())

embed.set_author(name = member, icon_url = member.avatar.url)

await ctx.send(embed = embed)

JSON file example:

{

"757383943116030074": {

"123456789012345678": {

"experience": 0,

"level": 1

}

Solution:

You can use a dictionary to keep track of the last message time for each user, and then check this timestamp to impose the cooldown.

# Create a dictionary to keep track of last message times

message_cooldown = {}

@bot.event

async def on_message(message):

if not message.author.bot:

# Check if the user is in the cooldown dictionary

if message.author.id in message_cooldown:

current_time = time.time()

last_message_time = message_cooldown[message.author.id]

# Check if the user's cooldown has expired (0.5 seconds cooldown)

if current_time - last_message_time < 0.5:

return

with open('level.json', 'r', encoding='utf-8') as f:

users = json.load(f)

await update_data(users, message.author, message.guild)

await add_experience(users, message.author, 4, message.guild)

await level_up(users, message.author, message.channel, message.guild)

# Update the last message time for the user

message_cooldown[message.author.id] = time.time()

with open('level.json', 'w', encoding='utf-8') as f:

json.dump(users, f)

await bot.process_commands(message)

Here we use the time module to calculate the time elapsed between messages for each user and impose a 0.5-second cooldown. The message_cooldown dictionary stores the last message time for each user. If the cooldown hasn't expired, the message is ignored.

Answered By: >xapi

Credit: >Stack Overflow

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