Style Guide

This document will present the Bedrock Wiki style guide for add-on creation. This guide aims to promote best practices while creating add-ons and create a consistent format for everyone to follow.

Folder Structure ​

• No spaces in your file paths. use_underscores.
• No CAPITALS in your identifiers, file names, or folder names. 'BP' and 'RP' folder names may use capitals.
• The total character length of any path must not exceed 80 characters (console limitation).
• Content folders should use consistent pluralization: Stick with names that are either all plural or all singular, don't mix and match. Example:

✅️ Consistent:

BP/functions/wiki/ability/ice_blast.mcfunction
BP/functions/wiki/ability/fire_trail.mcfunction
BP/functions/wiki/event/players/on_death.mcfunction
BP/functions/wiki/event/worlds/on_initialise.mcfunction

• All content folders ability and event are consistently singular.
• The content folders in event are also consistent, as both players and worlds are plural.

❌️ Inconsistent:

BP/functions/wiki/abilities/ice_blast.mcfunction
BP/functions/wiki/abilities/fire_trail.mcfunction
BP/functions/wiki/event/players/on_death.mcfunction
BP/functions/wiki/event/world/on_initialise.mcfunction

• Only abilities content folder is pluralized while event is singular.
• Also, in the event folder, the players folder is plural while world is singular.

Identifiers ​

Do not use identifiers that begin with a number, and especially don't use an identifier that is only a number. This applies to entities, component_groups, events, and anything else that takes a namespace:name pair.

File and Folder Names ​

Namespaces ​

A suitable namespace should be unique to you or your team. Something like mob or cars or content or custom would be a bad namespace since another developer might come up with the same namespace as you.

minecraft and minecon are reserved. Don't use these.

For personal projects, use a convenient version of your player name, and for team projects, use a suitable version of your team name.

When multiple developers work on a project together, the namespace should always be shared. If credit is required, use sub-indexing: minetite.wiki:dragon

Where to use namespaces:

• entities
• particles
• component groups
• events

When not to use namespaces:

• do not include your namespace in any folder path or file name.
• Note: The following folders are exceptions: functions, structures, loot_tables, trade_tables, sounds, and textures.
  • Using a namespace in these folders is recommended to prevent conflicts with other packs.
  • Example: BP/functions/namespace/test.mcfunction

Sub-Indexing ​

Sub indexing is the use of . to separate chained concepts. Sub-indexing should go in descending order from big to small:

✔️ animation.controller.dragon.flying.taking_off

❌ animation.controller.dragon_take_off_flying

When using sub-indexing, use _ as space, not another ..

✔️ animation.controller.dragon.flying.taking_off

❌ animation.controller.dragon.flying.taking.off

You can use sub-indexing in your entities: wiki:dragon.drake

Groups and Events Should Complement Each Other ​

Short-Names Should Be Generic ​

Short-names are file-specific identifiers, which are used to map between an identifier and a pretty name. They are handy because they allow us to re-use animation controllers and render controllers. For this reason, your short-names should be generic.

✔️ "sit": "animation.dragon.sit"

❌ "dragon_sitting": "animation.dragon.sit"

When we make short-names of this form, we can use a generic "sit" animation controller for all of them since we can use the sit short-name to play the sit animation.

Functions ​

1. All your .mcfunction files must be go in a namespaced root-folder within the functions folder. On Bedrock Wiki, we use the wiki namespace. However, you may choose a namespace based on your name or project. For more info, refer to the namespaces page.
   • ✅️ BP/functions/wiki/random_number.mcfunction
   • ❌️ BP/functions/random_number.mcfunction
2. They must be properly nested:
   • ✅️ BP/functions/wiki/teleport/zone/hell.mcfunction
   • ❌ BP/functions/wiki/teleport_hellzone.mcfunction
3. The names must follow an action_object structure. Meaning verbs should come before subjects.
   • ✅️ add_all
   • ❌️ all_add
   • ✅️ shuffle_position
   • ❌️ position_shuffle

Comments in Functions ​

• When working with functions that contain many commands, it's helpful to keep them organized by using multiple hashtags in comments to indicate different header levels.
• Optionally, to further distinguish these levels, you can apply different styles:
  • level 1 headers - # UPPERCASE
  • level 2 headers - ## Title Case
  • level 3 headers - ### Sentence case
• Try to avoid the use of more than three header levels or too many headers overall, as this can make the code look cluttered. For your reference, see the example file below:

# ON PLAYER ITEM DROP

## Give Effects
### Fire resistance
execute at @e[type=item,name="Fire Trail Ability"] run effect @p[r=3] fire_resistance 10 255
### Speed
execute at @e[type=item,name="Fire Trail Ability"] run effect @p[r=3] speed 10 1 true

## Add Particle Time (10s)
execute at @e[type=item,name="Fire Trail Ability"] run scoreboard players set @p[r=3] abilities.fire_trail 200

## Delete Item
kill @e[type=item,name="Fire Trail Ability"]


# ENTITY TIMER

## Emit Particle Trail
execute at @a[scores={wiki:ability.fire_trail=1..}] run particle minecraft:basic_flame_particle ~~~

## Countdown Timer
scoreboard players remove @a [scores={wiki:ability.fire_trail=1..}] wiki:ability.fire_trail 1

Note the use of two lines of spacing before level 1 headers and one line of spacing before level 2 headers for improved readability.

This practice helps create a consistent format, making it easier for everyone to follow, and maintain uniformity across your functions.

Scoreboard Objectives & Tags ​

• Must begin with a namespace and use snake_case.
  • This prevents conflicts with packs using identical tags or objectives.
• Only use lowercase letters (a–z), underscores (_), and dots (.) as special characters.

Example Objectives:

• wiki:blocks_travelled.overworld
• wiki:q.is_sneaking
• wiki:q.is_armed_any

Example Tags:

• wiki:inventory.full
• wiki:inventory.empty
• wiki:is_flying

Score Holders ​

• Must be prefixed with either a dot (.) or hashtag (#) and use PascalCase.
  • This prevents conflicts with gamertags using identical names and provides a clear visual distinction since score holders are used closely with objectives.
  • A prefix is used instead of a namespace to keep it concise, as the namespaced objective already prevents conflicts with other packs.
• No special characters other than dots (.).

Examples:

• .Ores.Iron
• .Ores.DeepslateIron
• .200

Group Animations Files when Possible ​

Example:

{
    "format_version": "1.8.0",
    "animations": {
        "animation.dragon.sit": {...},
        "animation.dragon.fly": {...},
        "animation.dragon.roar": {...},
  }
}

Split Textures by Path, Not Name ​

✔️ textures/dragon/red

❌ textures/dragon_red_skin

✔️ textures/npc/dragon_hunter/archer

❌ textures/npc/dragon_hunter_archer

.lang File Comments ​

Comments intended for the localizer should always be in-line, in the following format:

the.key=The string<\t>## Comment, intended for the one localizing.

<\t> represents a tab-character.

Own-line comments can be used for organizational purposes but should not store localization-critical information.

Acronyms when Discussing ​

Definition Format Orders ​

Blocks, entities and items should follow the format order below.

Blocks ​

• format_version
• minecraft:block
  • description
    • identifier
    • menu_category
      • category
      • group
    • states
    • traits
  • components
  • permutations
    • condition
    • components

Entities ​

• format_version
• minecraft:entity
  • description
    • identifier
    • spawn_category
    • is_spawnable
    • is_summonable
    • properties
  • component_groups
  • components
  • events

Items ​

• format_version
• minecraft:item
  • description
    • identifier
    • menu_category
      • category
      • group
  • components

Custom Components ​

Variable Names ​

PascalCase should be used with Block or Item as a prefix and Component as a suffix. As an example, const BlockMeltableComponent = { ... } rather than const meltable = { ... }.

This helps to differentiate what we're using in registerCustomComponent and what we're using as values elsewhere.