MCBot - Lua Programmable Minecraft Bot

MCBot is a programmable Minecraft Bot built for 1.13 servers. This bot can run Lua scripts and run automation tasks in game.

https://www.youtube.com/watch?v=JWh-3f5Os60

Minecraft is a open-world voxel sandbox game with both single-player and multi-player capabilities. Standard gameplay involves players surviving hostile creatures in game by building shelters and crafting items in game with an optional route to "complete" the game.

Features

This bot has a lot of neat features:

• Ability to be run on headless (CLI) servers, such as Debian Linux.
• Ability to load and execute scripts for task automation over a simple API using the Lua programming language without the worry of overhead syntax complexity.
• A* path finding integration for tracking players and being aware of the the world around it.
• Whitelisting friends that are allowed to execute commands over chat.
• Built-in commands for controlling the bot and viewing the bot status.

Commands

This bot can be commanded and controlled using in-game commands as well as CLI commands. Here's a list of all the commands that are available. Required parameters are denoted as while optional parameters are denoted as [optional].

If you are a friend of the bot, you can execute commands from chat by prefixing your messages with the ! symbol.

• load <path> - Load and execute a Lua script.
• say <message> - Send message to the chat. This can be prefixed with a forward-slash (/) to issue a server command.
• move forward [blocks] - Walk n number of blocks forward relative to which way the bot is facing.
• goto <player> - Find player and walk to their coordinates.
• goto <x> <y> <z> - Go to the coordinates x, y, z in the world.
• friend <add/remove/list> [player] - Add, remove, or list players the bot is friends with.

Scripting

If you would like to automate the bot with pre-defined scripts, you can create a script.lua file in the same directory as the executable and pass in --script script.lua to automatically load and execute the scripts when the bot connects. Or you can issue the in game command !load script.lua which will load and execute a script file on command. This can be done from sub-directories as well.

An example script might look something like:

-- Send the message "Hello World" to chat
bot.sendMessage("Hello World!")

local function moveTurn()
	-- Move forward 3 blocks
	bot.moveForward(3)
	
	bot.rotateYaw(90)
end

for i=1, i<4 do
	-- Call function moveTurn()
	moveTurn()
	
	-- Wait 1000 milliseconds (1 second)
	bot.sleep(1000)
end

Lua API

All bot functions:

Lua Function	Return Type	Description
bot.sleep(num)	nil	Delay thread execution for num milliseconds. Must be a positive integer.
bot.sendMessage(str)	nil	Send the string str to the chat.
bot.rotate(yaw, pitch)	nil	Rotate the bot's absolute yaw and pitch in degrees. (Yaw -180 to 180, Pitch -90 to 90).
bot.rotateYaw(deg)	nil	Rotate the bot's yaw by deg degrees.
bot.rotatePitch(deg)	nil	Rotate the bot's pitch by deg degrees.
bot.moveForward(num)	nil	Move num blocks/meters forward, relative to the bot's current yaw angle.
bot.moveBackward(num)	nil	Move num blocks/meters backward, relative to the bot's current yaw angle.
bot.getHealth()	float	Get the current health. (Health 0.0 to 20.0).
bot.getHunger()	int	Get the current hunger. (Hunger 0 to 20).
bot.isDead()	boolean	Check if the current health is 0.0.
bot.getPosition()	table	Get the position as a table {x=int, y=int, z=int}.
bot.getX()	float	Get the X position of the bot in the world.
bot.getY()	float	Get the Y position of the bot in the world.
bot.getZ()	float	Get the Z position of the bot in the world.
bot.getRotation()	table	Get the rotation as a table {yaw=float, pitch=float}
bot.getYaw()	float	Get the Yaw rotation of the bot.
bot.getPitch()	float	Get the Pitch rotation of the bot.
bot.onMessage(func)	nil	Call a function func(username, text) with the username of the player and text of the player.
bot.onRawMessage(func)	nil	Call a function func(text) with text being the raw message from chat.
bot.onHealthChange(func)	nil	Call a function func(health, hunger) with the health and hunger update.
bot.getUsername()	string	Get the username of the bot.

Authors

• Anthony Waldsmith awaldsmith0428@mpc.edu
• Wade Costa wcosta0336@mpc.edu

License

MIT License.