mcapibridge 0.4.1

Python libary for MCAPIBridge

MCAPIBridge Python Library

MCAPIBridge is a mod for Minecraft loaded with Fabric.This libary offers some ways to connect Minecraft with this mod in Python.

QuickStart

Install

Ensure your mod loaded.

Please ensure you are using the latest libary.Now version is 0.4.1.

Use pip to install this.

pip install mcapibridge

This is a simple example to connect.

from mc import Minecraft
import time

# Default ip is localhost and port is 4711
# You can use mc = Minecraft(host=YOURIP,port=YOURPORT) to change
mc = Minecraft()

# Show a message
mc.postToChat("§aHello, Minecraft! Python is here.")

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Classes

class Minecraft

Basic methods

Minecraft.postToChat(msg)

Send a message to chat screen.

• msg: String message.Support § .You can check it on Minecraft wiki.

Minecraft.runCommand(cmd)

Run commands as Server.

• cmd: Srting command without '/'

Ex: Minecraft.runCommand("time set day")

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World methods

Minecraft.setBlock(x, y, z, block_id, dimension=None)

Set a block at the point given.

• x, y, z: Int positions.
• block_id: String ID.If it is Minecraft vanilla,the ID can be written without Minecraft:. Ex:"stone", "diamond_block".Support other namespaces.
• dimension: Optional String target dimension/player name.

Minecraft.getBlock(x, y, z, dimension=None)

Gets the block ID at the specified coordinates.

• x, y, z: Int positions.
• dimension: Optional String target dimension/player name.
• return: String block ID.Ex."minecraft:grass_block".

Minecraft.spawnEntity(x, y, z, entity_id, yaw=0.0, pitch=0.0, dimension=None)

Spawn an entity at the point given.

• entity_id: String ID.If it is Minecraft vanilla,the ID can be written without Minecraft:. Ex:"zombie", "pig", "lightning_bolt".Support other namespaces.
• yaw: Optional Int degree.Horizontal degree.
• pitch: Optional Int degree.Vertical degree.
• dimension: Optional String target dimension/player name.

Minecraft.setEntityVelocity(entity_id, vx, vy, vz)

Sets the velocity of an entity.

• entity_id: Int ID.
• vx, vy, vz: Double velocity components.

Minecraft.setEntityNoGravity(entity_id, enable=True)

Enables or disables gravity for an entity.

• entity_id: Int ID.

Minecraft.getEntities(x, y, z, radius=10, dimension=None)

Gets the block ID at the specified coordinates.

• x, y, z: Double positions.
• radius: Double search radius.
• dimension: Optional String target dimension/player name.
• return: List of Dicts: [{'id': 123, 'type': 'minecraft:zombie', 'pos': Vec3}, ...]

Minecraft.spawnParticle(x, y, z, particle_id, count=10, dx=0.0, dy=0.0, dz=0.0, speed=0.0, dimension=None)

Spawn particle at the point given.

• particle_id: String ID.If it is Minecraft vanilla,the ID can be written without Minecraft:. Ex:"flame", "heart".Support other namespaces.
• count: Int count.
• dx, dy, dz: Optional double diffusion ranges.(when count=0, it represents the direction vector)
• speed: Optional double speed.
• dimension: Optional String target dimension/player name.

Minecraft.setSign(x, y, z, line1="", line2="", line3="", line4="", dimension=None)

Sets the text on a sign block.

• x, y, z: Int positions.
• line1-4: String text for each line.
• dimension: Optional String target dimension/player name.

The block at the position must already be a sign.

Minecraft.lookAt(target, x, y, z)

Forces a player or entity to look at a specific coordinate.

• target: String player name or Entity ID.
• x, y, z: The coordinate to look at.
• Example: mc.lookAt("Steve", 0, 100, 0) forces Steve to look up.

Minecraft.setEntityNbt(entity_id, nbt_string)

Modifies the NBT data of an entity directly using JSON format.

• entity_id: Integer Entity ID.
• nbt_string: Valid SNBT string (e.g., "{NoAI:1b, Glowing:1b}").
• Note: Useful for setting attributes like Scale in 1.20.6 ({Attributes:[{Name:"generic.scale",Base:2.0d}]}).

Minecraft.setBlockNbt(x, y, z, nbt_string, dimension=None)

Modifies the NBT data of a block entity (Tile Entity).

• x, y, z: Integer coordinates.
• nbt_string: Valid SNBT string.

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Class audio

Audio Doc

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Screen methods

Minecraft.updateScreen(screen_id, image_data)

Update the content of a Custom Screen block.

• screen_id: Int ID of the target screen (configured in-game via Stick).
• image_data: String Base64 encoded image data (JPG/PNG).

Minecraft.getScreenLocations(screen_id)

Get world coordinates for all screen blocks with the specified ID.

• screen_id: Int ID of the screen.
• return: List of ScreenLocation objects. Each object contains x, y, z coordinates and a dimension property.

Minecraft.registerScreen(screen_id, x, y, z, dimension="")

Manually register a screen location (used for programmatic screen creation).

• screen_id: Int ID of the screen.
• x, y, z: Double coordinates of the screen center.
• dimension: (Optional) String dimension ID (e.g., "minecraft:the_nether"). Defaults to empty string (context-dependent).

Minecraft.createScreenWall(start_x, start_y, start_z, width, height, axis='x', screen_id=1, dimension="")

Automatically build a screen wall and register it.

• start_x, start_y, start_z: Int starting coordinates.
• width: Int width of the screen (in blocks).
• height: Int height of the screen (in blocks).
• axis: String 'x' (East-West wall) or 'z' (North-South wall).
• screen_id: Int ID to assign to the screen.
• dimension: (Optional) String dimension ID. Defaults to empty string.

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Info methods

Minecraft.getOnlinePlayers()

Get players' name online.

• return: Dict: [{'name': 'Steve', 'id': 123}, ...].

Minecraft.getPlayerPos(target="")

Get player's position and yaw and pitch.

• target: String player name.
• return: Int x,y,z and Double yaw,pitch.

Minecraft.getPlayerEntityId(name)

Get player's ID.

• name: String player name.
• return: Int ID.

Minecraft.getPlayerName(entity_id)

Get player's ID.

• entity_id: Int ID.
• return: String player name.

Minecraft.getPlayerDetails(target="")

Get player's details.

• target: String player name.
• return: Dict including
  • name: String player name
  • id: Int ID
  • mode: String gamemode
  • health: Double health
  • max_health: Double max health
  • food: Int food
  • held_item: String item held
  • held_count: Int item held count

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State methods

Minecraft.setHealth(target, amount)

Set player's health.

• target: String player name.
• amount: Double health.

Minecraft.setFood(target, amount)

Set player's food.

• target: String player name.
• amount: Int food(0-20).

Minecraft.giveEffect(target, effect_name, duration_sec=30, amplifier=1)

Effect player.

• effect_name: String effect ID.Ex:"speed","night_vision".
• duration_sec: Int seconds.
• amplifier: Int amplifier.

Minecraft.setFlying(target, allow_flight=True, is_flying=True)

Enable player to fly in survival mode.

• target: String player name.

Minecraft.setFlySpeed(target, speed=0.05)

Set flight speed.

• target: String player name.
• speed: Double speed.Default 0.05.

Minecraft.setWalkSpeed(target, speed=0.1)

Set walk speed.

• target: String player name.
• speed: Double speed.Default 0.1.

Minecraft.setGodMode(target, enable=True)

Enable invulnerability.

• target: String player name.

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Inventory methods

Minecraft.getInventory(target="")

Get player's inventory.

• return: List of Dicts.Every dict has {'slot': block_ID, 'id': item_ID, 'count': item_count}.

Minecraft.give(target, item_id, count=1)

Give player item.

• item_id: String item ID.
• count: Int count.

Minecraft.clearInventory(target, item_id="")

Clear inventory.

• target: String player name.
• item_id: String item ID.

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TP methods

Minecraft.teleport(x, y, z, target="")

TP player.

• x, y, z: Int target x,y,z.
• target: String player ID.

Minecraft.teleportEntity(entity_id, x, y, z)

TP entity.

• entity_id: Int entity id.

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Events methods

Minecraft.pollBlockHits()

Get click events.

• return: List Class [BlockHit1,BlockHit2,.....]
  • pos: Class Vec3
    • Double x
    • Double y
    • Double z
  • face: Int click face.
  • entityId: Int ID of clicking on entity.
  • action: Int action type:1--left click,2--right click,101-105--Keyboard pressed.(Bind keys at Minecraft settings)
  • type: String action:"LEFT_CLICK" or "RIGHT_CLICK"

Minecraft.pollChatPosts()

Get player message events.

• return: List Class [ChatPost1,ChatPost2,.....]
  • name: String player name.
  • message: String message.

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Helper methods

Minecraft.getDirectionVector(target="")

Calculates the direction vector based on a player's rotation. Useful for shooting projectiles.

• target: String player ID.
• return: Class Vec3 normalized direction vector.

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class Vec3

Represents a 3D vector/coordinate.

• properties: x,y,z.
• Methods:
  • Vec3.length(): Returns vector length.

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class PlayerPos

Inherits Vec3 Represents player position with rotation.

• properties: x,y,z,yaw,pitch.
• Methods:
  • PlayerPos.forward(distance=1.0): Returns a new Vec3 position at distance blocks ahead of the player's view.

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class ScreenLocation

Represents the location of a screen or audio source, including dimension information.

• properties: x, y, z, dimension.
• Constructor: ScreenLocation(x, y, z, dimension="minecraft:overworld")

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Class IOManager

Provides interaction with the IO blocks (redstone control). All functions are accessed via mc.io.

IOManager.write(channel_id, value)

Send a signal to an IO block (Input Mode).

• channel_id: Int ID of the target IO channel.
• value: Can be an int (0-15) for analog signal strength, or bool (True=15, False=0) for digital signal.

IOManager.read(channel_id)

Read the current signal strength from an IO block (Output Mode).

• channel_id: Int ID of the target IO channel.
• return: Int signal strength (0-15).

IOManager.isHigh(channel_id, threshold=7)

Check if the signal on a channel is considered "High".

• channel_id: Int ID.
• threshold: Int threshold value (default 7).
• return: Bool True if signal > threshold.

IOManager.isLow(channel_id, threshold=7)

Check if the signal on a channel is considered "Low".

• channel_id: Int ID.
• threshold: Int threshold value (default 7).
• return: Bool True if signal <= threshold.

IOManager.config(x, y, z, channel_id, mode, dimension="")

Reconfigure an existing IO Block (set ID and Mode).

• x, y, z: Int coordinates of the block.
• channel_id: Int new Channel ID.
• mode: String or Bool mode.
  • "in", "input", False: Input Mode (Python controls MC redstone).
  • "out", "output", True: Output Mode (MC redstone triggers Python).
• dimension: (Optional) String dimension or player ID. Defaults to empty string (follows player).