Project Structure

Source roots

1.20.1 -> /mnt/f/IntelliJ/MyoCertus/Myotus_1_20_1
1.21.1 -> /mnt/f/IntelliJ/MyoCertus/MyoCertus_1_21_1

Main packages

me/myogoo/myotus/
├─ api/           Public interfaces, annotations, config-tab types, datagen helpers
├─ client/        Keybindings, translation keys, GUI screens, widgets, and config screens
├─ commands/      Annotation-driven command registration and built-in commands
├─ config/        Client config spec definitions
├─ impl/          Internal registrar and API implementations
├─ init/          Bootstrap wiring, config registration, item registration, and NeoForge condition codecs
├─ integration/   Optional integration helpers for item-list and GuideME paths
├─ item/          Upgrade-card sample item(s)
├─ menu/          Terminal menu helpers, storage keys, and slot semantics
├─ mixin/         Mixins
│  ├─ ae2/        AE2 menu/screen mixins
│  └─ guideme/    GuideME mixins
└─ util/mod       Optional dependency and version-range helpers

API subpackages worth knowing

api/
├─ annotation/    Marker annotations for optional integrations and item-list loaders
├─ command/       `@MyoCommand`, `@MyoExecute`, `@MyoArgument`
├─ config/        `MyoConfigTab`, visibility predicates, and tab-context helpers
├─ datagen/       `MyoModCondition`
├─ integration/   Runtime integration manager interface
├─ registrar/     Public registration interfaces
└─ util/          `SafeClass` reflection helper

Resources worth knowing

• src/main/templates/META-INF/neoforge.mods.toml in 1.21.1
• src/main/resources/assets/ae2/screens/config/myotus.json
• src/main/resources/assets/ae2/screens/config/config.json
• src/main/resources/assets/myotus/lang/en_us.json
• src/main/resources/assets/myotus/textures/gui/myoicons.png
• src/main/resources/META-INF/accesstransformer.cfg
• src/main/resources/myotus.mixins.json

Structural differences between lines

1.20.1

• Uses Forge and Java 17
• Keeps config in ForgeConfigSpec
• Exposes the core registrars and runtime integration manager
• Ships the terminal settings screen, command bootstrap, and item-list integration hooks

1.21.1

• Uses NeoForge and Java 21
• Expands API documentation directly in source Javadocs
• Adds config-tab visibility/context helpers
• Adds MyoModCondition for NeoForge data conditions
• Adds terminal upgrade card interfaces and storage helpers
• Adds item registration, access transformers, mixins, and Maven publishing configuration

Practical reading order

• Start at Myotus.java for bootstrap behavior.
• Move to api/ to understand the public surface.
• Check init/, integration/, and commands/ for user-visible extension hooks.
• Inspect menu/ and item/ when working on 1.21.1 upgrade card functionality.
• Inspect mixin/ae2 when you need to understand how terminal storage and the floating side panel are injected into AE2.