Winui3 Migration Guide

Expert 10x engineer with comprehensive knowledge of web development, internet protocols, and web standards. Use when working with HTML, CSS, JavaScript, web APIs, HTTP/HTTPS, web security, performance optimization, accessibility, or any web/internet concepts. Specializes in translating web terminology accurately and implementing modern web standards across frontend and backend development.

Foundation skill for MSW (MapleStory Worlds). Read this FIRST before anything else in MSW.

MSW DefaultPlayer (character) management. Use the msw-general ModelBuilder to inspect/patch DefaultPlayer.model and Player.model, add/remove components, configure movement speed / jump force / HP / camera, and per-map-mode movement components. Use for DefaultPlayer model, player components, movement speed, jump force, HP, camera, physics. Keywords: player, DefaultPlayer, speed, jump, HP, camera, gravity, revive, respawn, character.

Authoring MSW scripts (.mlua) plus integrated playtest and debugging. Covers mlua syntax, annotations (@Component/@Logic/@ExecSpace/@Sync), lifecycle, exec spaces, property sync, event system, file workflow, build-log inspection, error classification, and the test/debug loop. Keywords: script, mlua, lua, Component, Logic, annotation, ExecSpace, Sync, event, play, test, debug, lifecycle.

MSW search integration — (1) vector search for API docs and implementation guides via the msw-mcp MCP server (mlua_api_retriever / mlua_document_retriever), (2) REST API search for resources (sprite / animation / sound / resource pack / avatar). Use for 'find details, examples, or related APIs not in .d.mlua', 'need a SpriteRUID', 'monster sprite', 'background image', 'find a sound', 'avatar item lookup', etc. Keywords: document search, API details, examples, guide, retriever, resource, sprite, animation, sound, RUID, resource pack, avatar.

MSW avatar management — costume (CostumeManagerComponent, 17 slots) + animation 3-layer pipeline (StateComponent → AvatarStateAnimationComponent → AvatarRendererComponent). Four-level distinction: State key (uppercase) / AvatarBodyActionStateName (lowercase) / MapleAvatarBodyActionState enum / sprite action ID (swingO1, shoot1). Two mapping systems via IsLegacy/ActionSheet/StateToAvatarBodyActionSheet. PlayerControllerComponent auto-transition conflicts with ActionStateChangedEvent resolved via RemoveActionSheet/SetActionSheet/BodyActionStateChangeEvent. Applies to any avatar-bearing entity (NPC, monster, etc.), not only DefaultPlayer. Use for costume get/set, 17 equip slots, animation state mapping, action override, weapon-specific attack motion, custom shoot/cast/dance action. Keywords: avatar, costume, animation, state, action, shoot, swing, weapon, equipment, custom action, block auto playback, remap.