# Events

**Events:**

```lua
Events.Register(name, callback)
```

Registers a callback function under a given name. The engine will invoke it automatically when the corresponding event fires.

**Paint:**

```lua
Events.Register("Paint", function()
    -- called every frame while the overlay is rendering
    -- use this for all ESP and Draw calls
end)
```

The `Paint` event fires every frame during the overlay render pass. This is where all of your `Draw.*` calls should live — lines, boxes, text, circles, etc. Anything drawn outside of this callback will not render correctly.

**Example:**

```lua
Events.Register("Paint", function()
    local players = Cache.FetchPlayers()
    for _, p in ipairs(players) do
        if p.Valid then
            Draw.Rect(p:BoxMin(), p:BoxMax(), Color.new(255, 0, 0, 255), 0, 1)
        end
    end
end)
```

**Rescan:**

```lua
Events.Register("Rescan", function()
    -- called whenever the player cache is rescanned
end)
```


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