secretsplash/tools/LUA_VSCODE_SETUP.md

PSXSplash Lua — VS Code Autocomplete Setup

Get full IntelliSense (autocomplete, hover docs, go-to-definition) for the PSXSplash Lua API in Visual Studio Code.

1. Install the Lua Language Server extension

Open VS Code → Extensions → search sumneko.lua → Install.

2. Point the language server at the stubs

Add (or merge) the following into your workspace .vscode/settings.json:

{
    "Lua.workspace.library": [
        // Path to the EmmyLua stubs shipped with SplashEdit
        "${workspaceFolder}/splashedit/tools"
    ],
    "Lua.runtime.version": "Lua 5.2",
    "Lua.diagnostics.globals": [
        // Event callbacks the engine calls — not "undefined" globals
        "onCreate", "onUpdate", "onDestroy",
        "onEnable", "onDisable",
        "onCollideWithPlayer", "onInteract",
        "onTriggerEnter", "onTriggerStay", "onTriggerExit",
        "onButtonPress", "onButtonRelease"
    ]
}

If your Lua scripts live inside the Unity project (kitchensink/Assets/Lua/), open that folder as the workspace root, then adjust the library path to be relative to it, e.g. "../splashedit/tools".

3. Verify

Open any .lua script and type Entity. — you should see Find, FindByIndex, GetCount, etc. with full parameter docs.

Hover over Input.CROSS to see its type annotation. Hover over onUpdate to see the performance warning.

Updating the stubs

When the C++ API changes, regenerate splash_api.lua from the RegisterAll() function in psxsplash/src/luaapi.cpp. The stubs file is the single source of truth for editor autocomplete.