How do I slightly modify a inherited function?

[KingDonutOfAllDonuts (KingDonut)]

I want to make a OOP system(I am very new to oop) but if I want to slightly extend a function like after the object does it’s attack function it explodes?

Unit Class

local Unit = {}
Unit.__index = Unit

function Unit.new(team, model, position)
	local self = setmetatable({}, Unit)
	self.Team = team
	self.Model = model:Clone()
	self.Model.PrimaryPart.Position = position
	return self
end

function Unit:Attack()
	--attack
	print("Attack")
end

return Unit

ExplodingUnit Class

local Unit = require(script.Parent.Unit)
local ExplodingUnit = setmetatable({}, {__index = Unit})
ExplodingUnit.__index = ExplodingUnit

function ExplodingUnit.new(team, model, position, bomb)
	local self = setmetatable(Unit.new(team, model, position), ExplodingUnit)
	self.Bomb = bomb
	return self
end

function ExplodingUnit:Attack()
	Unit:Attack()
	--Explode?
	print("Explode")
end

return ExplodingUnit

[xDeltaXen]

How would I get the ExplodingUnit:Attack to run Unit:Attack first?
I’ve heard that you can’t inherit functions in roblox lua?

It’s not entirely clear what you’re trying to do, but if the goal is to extend a class by adding functionality to one of its methods, you can do something like this:
local Unit = {}
Unit.__index = Unit

function Unit.new(team, model, position)
local self = setmetatable({}, Unit)
self.Team = team
self.Model = model:Clone()
self.Model.PrimaryPart.Position = position
return self
end

function Unit:Attack()
–attack
print(“Attack”)
end

local ExplodingUnit = setmetatable({}, {__index = Unit})
ExplodingUnit.__index = ExplodingUnit

function ExplodingUnit.new(team, model, position, bomb)
local self = setmetatable(Unit.new(team, model, position), ExplodingUnit)
self.Bomb = bomb
return self
end

function ExplodingUnit:Attack()
Unit.Attack(self) – Call the original method
–Explode?
print(“Explode”)
– Note: calling self:Attack() here will result in infinite recursion
end

Now you can override ExplodingUnit:Attack and still call the original implementation if you want to.
Note that if you want to do this for multiple methods, you can finish the ExplodingUnit definition with code that looks like this:
local methods = { “Attack” }
for _, method in next, methods do
local original = ExplodingUnit[method]
ExplodingUnit[method] = function(self, …)
original(self, …)
end
end