Mineflayer-pathfinder

Pathfinding plugin. This is still a work in progress, feel free to contribute by making suggestions.

Install

npm install mineflayer-pathfinder

Video Tutorial

For a video tutorial explaining the usage of mineflayer-pathfinder, you can watch the following Youtube videos:

Example

const mineflayer = require('mineflayer')
const pathfinder = require('mineflayer-pathfinder').pathfinder
const Movements = require('mineflayer-pathfinder').Movements
const { GoalNear } = require('mineflayer-pathfinder').goals
const bot = mineflayer.createBot({ username: 'Player' })

bot.loadPlugin(pathfinder)

bot.once('spawn', () => {

  const mcData = require('minecraft-data')(bot.version)

  const defaultMove = new Movements(bot, mcData)
  
  bot.on('chat', function(username, message) {
  
    if (username === bot.username) return

    const target = bot.players[username] ? bot.players[username].entity : null
    if (message === 'come') {
      if (!target) {
        bot.chat('I don\'t see you !')
        return
      }
      const p = target.position

      bot.pathfinder.setMovements(defaultMove)
      bot.pathfinder.setGoal(new GoalNear(p.x, p.y, p.z, 1))
    } 
  })
})

Features

• Optimized and modernized A* pathfinding
• Complexe goals can be specified (inspired by baritone goals )
• Customizable movements generator
• Each movement can have a different cost
• Can break/place blocks as part of its deplacement
• Automatically update path when environment change
• Long distance paths
• Can swim

API

Considering there are a lot of deep changes that are being worked on, it could take some time before it's done

Also, for now, there is only the pathfinder module, movements and goals still need to be done

Functions:

bot.pathfinder.goto(goal, callback?)

Returns a Promise. Resolves when the goal is reached. Rejects on error.

• goal - Goal instance
• callback <function> - (Optional) The callback is passed two arguments (err, result), where error is null on success.

bot.pathfinder.bestHarvestTool(block)

Returns the best harvest tool in the inventory for the specified block

• Returns - Item instance or null
• block - Block instance

bot.pathfinder.getPathTo(movements, goal, done, timeout)

• Returns - The path
• movements - Movements instance
• goal - Goal instance
• timeout - number (optional, default bot.pathfinder.thinkTimeout)

bot.pathfinder.setGoal(Goal, dynamic)

• goal - Goal instance
• dynamic - boolean (optional, default false)

bot.pathfinder.setMovements(movements)

Assigns the movements config

• movements - Movements instance

bot.pathfinder.stop()

Stops path finding when its save to stop or after the bot encountered an error while path finding. To force stop use bot.pathfinder.setGoal(null). Emits path_stop when stopped.

bot.pathfinder.isMoving()

A function that checks if the bot is currently moving.

• Returns - boolean

bot.pathfinder.isMining()

A function that checks if the bot is currently mining blocks.

• Returns - boolean

bot.pathfinder.isBuilding()

A function that checks if the bot is currently placing blocks.

• Returns - boolean

Properties:

bot.pathfinder.thinkTimeout

Think Timeout in milliseconds

• Default - 5000

bot.pathfinder.tickTimeout

How many ms per tick are allocated to thinking

• Default - 40

bot.pathfinder.searchRadius

The search limiting radius, in blocks, if -1 the search is not limited by distance.

• Default - -1

Movement class

This class configures how pathfinder plans its paths. It configures things like block breaking or different costs for moves. This class can be extended to add or change how pathfinder calculates its moves.

Usage

Pathfinder instantiates the default movement class by itself if no instance is specified. If you want to change values you should create a new instance of the Movements class, change it's values and set it as pathfinders new movement class.

Example:

const { Movements } = require('mineflayer-pathfinder') // Import the Movements class from pathfinder

bot.once('spawn', () => {
  // Once we've spawn, it is safe to access mcData because we know the version
  const mcData = require('minecraft-data')(bot.version)

  // A new movement instance for specific behavior
  const defaultMove = new Movements(bot, mcData)

  defaultMove.allow1by1towers = false // Do not build 1x1 towers when going up
  defaultMove.canDig = false // Disable breaking of blocks when pathing 
  defaultMove.scafoldingBlocks.push(mcData.itemsByName['netherrack'].id) // Add nether rack to allowed scaffolding items
  bot.pathfinder.setMovements(defaultMove) // Update the movement instance pathfinder uses

  // Do pathfinder things
  // ...
})

Movements class default properties

Movement class properties and there default values.

canDig

Boolean to allow breaking blocks

• Default true

digCost

Additional cost for breaking blocks.

• Default - 1

placeCost

Additional cost for placing blocks.

• Default - 1

maxDropDown

Max drop down distance. Only considers drops that have blocks to land on.

• Default - 4

infiniteLiquidDropdownDistance

Option to ignore maxDropDown distance when the landing position is in water.

• Default - true

liquidCost

Additional cost for interacting with liquids.

• Default - 1

dontCreateFlow

Do not break blocks that touch liquid blocks.

• Default - true

dontMineUnderFallingBlock

Do not break blocks that have gravityBlock above.

• Default - true

allow1by1towers

Allow pillaring up on 1x1 towers.

• Default - true

allowFreeMotion

Allow to walk to the next node/goal in a strait line if terrain allows it.

• Default - false

allowParkour

Allow parkour jumps like jumps over gaps bigger then 1 block

• Default - true

allowSprinting

Allow sprinting when moving.

• Default - true

blocksCantBreak

Set of block id's pathfinder cannot break. Includes chests wheat and all unbreakable blocks.

• instance of Set

blocksToAvoid

Set of block id's to avoid.

• instance of Set

liquids

Set of liquid block id's.

• instance of Set

climbables

Set of block id's that are climable. Note: Currently unused as pathfinder cannot use climables.

• instance of Set

replaceables

Set of block id's that can be replaced when placing blocks.

• instance of Set

scafoldingBlocks

Array of item id's that can be used as scaffolding blocks.

• Default - [<scaffoldingItems>]

gravityBlocks

Set of block id's that can fall on bot's head.

• instance of Set

fences

Set of block id's that are fences or blocks that have a collision box taler then 1 block.

• instance of Set

carpets

Set of all carpet block id's or blocks that have a collision box smaller then 0.1. These blocks are considered save to walk in.

• instance of Set

Events:

goal_reached

Called when the goal has been reached. Is not called for dynamic goals.

path_update

Called whenever the path is recalculated. Status may be:

• success a path has been found
• partial a partial path has been found, computations will continue next tick
• timeout timed out
• noPath no path was found

goal_updated

Called whenever a new goal is assigned to the pathfinder.

path_reset

Called when the path is reset, with a reason:

• goal_updated
• movements_updated
• block_updated
• chunk_loaded
• goal_moved
• dig_error
• no_scaffolding_blocks
• place_error
• stuck

path_stop

Called when the pathing has been stopped by bot.pathfinder.stop()

Goals:

GoalBlock(x, y, z)

One specific block that the player should stand inside at foot level

• x - Integer
• y - Integer
• z - Integer

GoalNear(x, y, z, range)

A block position that the player should get within a certain radius of

• x - Integer
• y - Integer
• z - Integer
• range - Integer

GoalXZ(x, z)

Useful for long-range goals that don't have a specific Y level

• x - Integer
• z - Integer

GoalNearXZ(x, z, range)

Useful for finding builds that you don't have an exact Y level for, just an approximate X and Z level

• x - Integer
• z - Integer
• range - Integer

GoalY(y)

Get to y level

• y - Integer

GoalGetToBlock(x, y, z)

Don't get into the block, but get directly adjacent to it. Useful for chests.

• x - Integer
• y - Integer
• z - Integer

GoalCompositeAny(Array<Goal>?)

A composite of many goals, any one of which satisfies the composite. For example, a GoalCompositeAny of block goals for every oak log in loaded chunks would result in it pathing to the easiest oak log to get to

• Array - Array of goals

GoalCompositeAll(Array<Goal>?)

A composite of many goals, all of them needs to be satisfied.

• Array - Array of goals

GoalInvert(goal)

Inverts the goal

• goal - Goal to invert

GoalFollow(entity, range)

Follows an entity

• entity - Entity instance
• range - Integer

GoalPlaceBlock(pos, world, options)

Position the bot in order to place a block

• pos - Vec3 the position of the placed block
• world - the world of the bot
• options - object containing all optionals properties:
  • range - maximum distance from the clicked face
  • faces - the directions of the faces the player can click
  • facing - the direction the player must be facing
  • facing3D - boolean, facing is 3D (true) or 2D (false)
  • half - top or bottom, the half that must be clicked

GoalBreakBlock(x, y, z, bot, { range = 5 })

Path into a position were a blockface of block at x y z is visible. Fourth argument is optional and contains options. range option defaults to 4.