How to inherit the default methods when writing your own custom methods?
Hi. I am learning metatables and wanted to create like my own methods to work on parts.
I have created some methods that work flawlessly on it. My problem now is that when I try to general methods such as :Destroy(), it will not work.
I understand why this is happening. But I have no idea how I can fix it.
Any suggestions is appreciated.
Uhh Here is a basic example. When I call the method Destroy it will say its a nil value
local Container = {}
Container.__index = Container
function Container.new ()
local newContainer = {}
newContainer.part = Instance.new("Part")
newContainer.part.Anchored = true
newContainer.part.Parent = workspace
setmetatable(newContainer, Container)
return newContainer
end
function Container:PrintName ()
print(self.part.Name)
end
local part = Container.new()
part:PrintName()
part:Destroy()
I tried doing setmetatable(Container, Instance) but that would not work.
Please help.
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1 answer
The issue is not that your methods are interfering with Roblox's. You are actually creating a table that has a part at index part (in Lua .part is the same as ["part"]). When you call the :Destroy() method on your variable "part" you are really calling the :Destroy() method on your newContainer table that you return from the Container.new function. You would need to call the :Destroy method on the actual part, which you have at index part in the newContainer table. Here is what your fixed code looks like, with a wait added in to show you that the part is created and then destroyed.
local Container = {}
Container.__index = Container
function Container.new ()
local newContainer = {}
newContainer.part = Instance.new("Part")
newContainer.part.Anchored = true
newContainer.part.Parent = workspace
setmetatable(newContainer, Container)
return newContainer
end
function Container:PrintName ()
print(self.part.Name)
end
local part = Container.new()
part:PrintName()
wait(3)
part.part:Destroy()
You even do this with self.part.Name in the PrintName method, I just think you missed what the part variable really is (a table). I recommend that you name your variables something that helps you remember what is actually inside of them, and don't confuse you like this.
I hope this helps. Have a great day scripting!
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