Lib.Class

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Pure. No permission.

Lib.Class

Builds a class. Call the class to make an instance; init(self, ...) runs if defined (looked up through the parent too). Single inheritance, no super(): an override names the parent (Zone.holds(self, p)).

Lib.Class(name, parent)

Parameters

• name: string
• parent?: table — a class from a previous call

Returns

• table — the class

local Zone = Lib.Class('Zone')
function Zone:init(centre, radius) self.centre, self.radius = centre, radius end

local Circle = Lib.Class('Circle', Zone)
local here = Circle(centre, 15)

• It uses metatables, so an instance does not survive being passed through an export: it arrives as plain fields without methods.
• Not verified on the client: getmetatable is absent from the Open77 client sandbox and setmetatable has not been proven there.

Class.Holds

Whether a value is an instance of the class or of a subclass.

Circle.Holds(value)

Parameters

• value: any

Returns

• boolean