mixin-writing

What problem does it solve?

Writing SpongePowered Mixins for Minecraft mods frequently causes cross-mod compatibility conflicts, fragile bytecode targeting that breaks across game versions, and runtime errors from incorrect injector usage or missing best practices.

Core Features & Use Cases

• Chainable Injector Guidance: Prioritizes MixinExtras injectors over vanilla non-chaining patterns to ensure multiple mods can safely target the same method without silent conflicts.
• Precise Targeting Support: Provides clear rules for choosing between standard @At injection points and MixinExtras @Expression annotations to eliminate fragile ordinal-based or offset-based targeting.
• Comprehensive Best Practice Coverage: Includes guidance for local variable capture, value sharing between handlers, accessor/invoker patterns, interface injection, and common pitfall avoidance for all mixin development scenarios.
• Use Case Example: A mod developer writing a mixin to modify entity fall behavior can use this skill to select the correct @ModifyExpressionValue injector with an @Expression targeting the fall distance check, ensuring compatibility with other mods that modify the same entity tick method.

Quick Start

Use the mixin-writing skill to review your existing mixin for the entity damage method and recommend the most compatible MixinExtras injector and targeting approach for your modification.