update rules

.cursor/rules/roblox/en-us/luau/enums.md

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+---
+title: Enums
+description: A fixed list of items (enumeration).
+---
+
+<Alert severity="info">
+Enums are not a [built-in Luau type](https://luau.org/typecheck#builtin-types) and they exist only in Roblox, but they're conceptually similar to other Luau data types and are something you'll work with frequently in Roblox development.
+</Alert>
+
+The **enumeration** data type, or `Datatype.Enum`, is a fixed list of items. You can access enums through the global object called `Datatype.Enum`. For a full list and their respective items, see [Enums](/reference/engine/enums).
+
+## Enum items
+
+To get all items of an enum, call the `Datatype.Enum:GetEnumItems()|GetEnumItems()` method on it. The following code sample demonstrates how to call `Datatype.Enum:GetEnumItems()|GetEnumItems()` on the `Enum.PartType` enum.
+
+```lua
+local partTypes = Enum.PartType:GetEnumItems()
+
+for index, enumItem in partTypes do
+	print(enumItem)
+end
+
+--[[
+	Enum.PartType.Ball
+	Enum.PartType.Block
+	Enum.PartType.Cylinder
+	Enum.PartType.Wedge
+	Enum.PartType.CornerWedge
+]]
+```
+
+## Data type
+
+The `Datatype.EnumItem` is the data type for items in enums. An `Datatype.EnumItem` has three properties:
+
+- `Name` — The name of the `Datatype.EnumItem`.
+- `Value` — The numerical index of the `Datatype.EnumItem`.
+- `EnumType` — The parent `Datatype.Enum` of the `Datatype.EnumItem`.
+
+Some properties of objects can only be items of certain enums. For example, the `Class.Part.Shape|Shape` property of a `Class.Part` object is an item of the `Enum.PartType` enum. The following code sample demonstrates how to print the properties of the `Enum.PartType.Cylinder` enum item.
+
+```lua
+print(Enum.PartType.Cylinder.Name) --> "Cylinder"
+print(Enum.PartType.Cylinder.Value) --> 2
+print(Enum.PartType.Cylinder.EnumType) --> PartType
+```
+
+To assign an `Datatype.EnumItem` as the value of a property, use the full `Datatype.Enum` declaration. You can also use the item's `Datatype.EnumItem.Name|Name` property as a string.
+
+```lua
+local Workspace = game:GetService("Workspace")
+
+local part = Instance.new("Part") -- Create a new part
+
+part.Shape = Enum.PartType.Cylinder -- By full enum item declaration (best practice)
+part.Shape = "Cylinder" -- By enum item's name as a string
+
+part.Parent = Workspace
+```