custom-crafter-api

Minecraft 版本： 1.21.4 1.21.5 1.21.6 1.21.7 1.21.8 1.21.9 1.21.10 1.21.11 26.1 26.1.1 26.1.2

平台： folia paper purpur

标签： game-mechanics library utility

custom crafter

custom crafter is a custom recipe plugin for PaperMC servers, and also a library (API) for defining custom recipes from your own plugin.

Define custom recipes freely from your plugin and introduce new elements into the game.

Japanese README (日本語ドキュメント)

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Features

• Custom recipes for vanilla items — add new recipes for existing Minecraft items.
• Custom item support — use items created by your plugin as results or materials.
• Material management commands — for server administrators managing recipe materials.
• Automatic integration — registered recipes appear in players' crafting environment without extra setup.
• Vanilla crafting continues to work unmodified.

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Demo

Crafting demo video 1. Place base blocks (`GOLD_BLOCK`). 2. Craft `infinityIronBlockCore` [(recipe definition)](https://github.com/Sakaki-Aruka/custom-crafter/blob/master/demo/src/main/kotlin/online/aruka/custom_crafter/demo/register/ShapedRecipeProvider.kt). 3. Compress an iron block into `infinityIronBlock` [(recipe definition)](https://github.com/Sakaki-Aruka/custom-crafter/blob/master/demo/src/main/kotlin/online/aruka/custom_crafter/demo/register/ShapedRecipeProvider.kt). 4. Repeat with the same recipe. 5. Repeat again. 6. Extract the infinity iron block with `infinityIronBlockExtract` [(recipe definition)](https://github.com/Sakaki-Aruka/custom-crafter/blob/master/demo/src/main/kotlin/online/aruka/custom_crafter/demo/register/ShapelessRecipeProvider.kt). 

Clone the repository and run the following command to build a demo plugin containing the recipes shown above, along with several others:

mvn -pl demo package

The resulting jar, ready to be placed in a server's plugins directory, is written to demo/target.

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Supported Environments

Custom_Crafter Version	Paper Version
5.4.0 (latest)	1.21.4 ~ 1.21.11, 26.1.x
5.0.13 ~ 5.0.21, 5.1.0 ~ 5.3.0	1.21.4 ~ 1.21.11, 26.1.x
5.0.0 ~ 5.0.11	1.21.3
4.3 (legacy)	1.21.3
4.2 (legacy)	1.20.1 ~ 1.20.4

The minimum supported Paper version rarely changes between releases, so using the latest release is recommended.

Note: custom crafter does not run on Spigot/Bukkit. Use PaperMC or a Paper fork.

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Using the API

Since version 5.0.0, custom crafter also works as an API for defining and registering custom recipes from your own plugin.

Documentation

• KDoc (Kotlin)
• Javadoc (Java)
• Documentation site

To build the documentation locally:

mvn -pl api dokka:dokka      # KDoc
mvn -pl api dokka:javadoc    # Javadoc

Dependency

Plugins depending on CustomCrafterAPI must list Custom_Crafter under depend in plugin.yml:

depend:
  - "Custom_Crafter"

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Latest version: 5.4.0 (Maven Central)

The CustomCrafter plugin is assumed to be present at runtime, so set its dependency scope to compile-time only — the same applies to the Kotlin stdlib if your plugin is written in Kotlin.

Compile-time-only scope name by build tool:

• Maven: provided
• Gradle: compileOnly

Maven ```xml io.github.sakaki-aruka custom-crafter-api 5.4.0 provided org.jetbrains.kotlin kotlin-stdlib 2.3.0 provided ``` Gradle (Groovy) ```groovy dependencies { compileOnly 'io.github.sakaki-aruka:custom-crafter-api:5.4.0' compileOnly 'org.jetbrains.kotlin:kotlin-stdlib:2.3.0' // if using Kotlin } ``` Gradle (Kotlin DSL) ```kotlin dependencies { compileOnly("io.github.sakaki-aruka:custom-crafter-api:5.4.0") compileOnly("org.jetbrains.kotlin:kotlin-stdlib:2.3.0") // if using Kotlin } ```

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Server Installation

custom crafter is written in Kotlin.

1. Download the plugin jar and place the downloaded files in your plugins directory.
2. Start or reload the server.
3. Place base blocks in a 3x3 area directly beneath a standard workbench — a standard workbench alone does not enable custom recipes. The default base block is GOLD_BLOCK.

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Code Samples

Compatibility check

Checks whether the CustomCrafterAPI version your plugin depends on is compatible with the version running on the server:

class YourPlugin : JavaPlugin() {
    val dependVersion = Triple(5, 3, 0)

    @Override
    fun onEnable() {
        if (CustomCrafterAPI.MAJOR_VERSION == dependVersion.first
            && CustomCrafterAPI.MINOR_VERSION >= dependVersion.second) {
            return
        }
        Bukkit.pluginManager.disablePlugin(this)
    }
}

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Defining a recipe

A custom recipe consists of three parts:

1. Material (CMatter) — the input requirements for crafting.
2. Result (ResultSupplier) — what a successful craft produces.
3. Recipe (CRecipe) — combines materials, results, and shape (shaped/shapeless) for registration.

1. Materials (CMatter)

CMatter defines which item, how many, and where it must be placed. Use CMatterImpl or your own implementation of CMatter.

Accept 1 stone or 1 cobblestone:

val matter: CMatter = CMatterImpl(
    name = "test-matter",
    candidate = setOf(Material.STONE, Material.COBBLESTONE),
    amount = 1,
    anyAmount = false, // true: allow the amount to be satisfied across a stack
    predicates = null  // additional NBT or other conditions
)

For a simple set of candidate materials, of is shorter:

val matter: CMatter = CMatterImpl.of(Material.STONE, Material.COBBLESTONE)

2. Results (ResultSupplier)

A ResultSupplier receives the crafting context (Config) and returns the output items. Command execution can be used instead where no item result is needed.

val supplier = ResultSupplier { config ->
    // 'config' holds crafting context: player, workbench, etc.
    emptyList<ItemStack>()
}

Helper methods cover common cases:

// Always returns 1 stone
val supplier = ResultSupplier.single(ItemStack.of(Material.STONE))

// Scales output with the number of items crafted in one action (e.g. shift-click)
val supplier2 = ResultSupplier.timesSingle(ItemStack.of(Material.STONE))

3. Recipe (CRecipe)

CRecipeImpl combines materials and results into a registrable recipe.

val recipe: CRecipe = CRecipeImpl(
    name = "test-recipe",
    items = mapOf(CoordinateComponent(0, 0) to matter),
    containers = null, // additional conditions, e.g. permissions
    results = setOf(ResultSupplier.timesSingle(Material.STONE)),
    type = CRecipe.Type.NORMAL
)

• items: maps grid coordinates (CoordinateComponent(x, y)) to the required CMatter.
• type: CRecipe.Type.NORMAL is a shaped recipe, where coordinates matter; CRecipe.Type.AMORPHOUS is shapeless, where coordinate values are arbitrary.

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License

MIT License

Copyright (c) 2023 - 2026 Sakaki-Aruka

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