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2
Can't call method from module?
I just starting to learn about OOP and make this script(module):
01 | local Part = {} |
02 | Part._index = Part |
03 |
04 | function Part.Create(name, parent, size, position) |
05 | local part = {newPart = Instance.new("Part")} |
06 | setmetatable(part , Part) |
07 |
08 | part.newPart.Name = name |
09 | part.newPart.Parent = parent |
10 | part.newPart.Size = size |
11 | part.newPart.Position = position |
12 |
13 | return part |
14 | end |
15 |
16 | function Part:ChangeColor(color) |
17 | self.newPart.BrickColor = color |
18 | end |
19 |
20 | return Part |
Another script:
1 | local Part = require(game:GetService("ReplicatedStorage").CreatePart) |
2 |
3 | script.Parent.MouseClick:Connect(function() |
4 | local newPart = Part.Create("Stuff", game:GetService("Workspace"), Vector3.new(2, 2, 2), Vector3.new(0, 2, 0)) |
5 | --Part.Create(name, parent, size, position) |
6 | newPart:ChangeColor(BrickColor.new("Bright green")) --change the BrickColor of newPart |
7 | end) |
The first function is work, but the second one can't. When I try to use the function, it throw this error:
1 | Workspace.Button.ClickDetector.Script:5: attempt to call method 'ChangeColor' (a nil value) |
Thank for reading :D
2 answers
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1
You are setting table._index not table.__index.
Double underscores "__" are used to access the metamethods of a table.
01 | local Part = {} |
02 | Part._index = Part |
03 |
04 | function Part.Create(name, parent, size, position) |
05 | local part = {newPart = Instance.new("Part")} |
06 | setmetatable(part , Part) |
07 |
08 | part.newPart.Name = name |
09 | part.newPart.Parent = parent |
10 | part.newPart.Size = size |
11 | part.newPart.Position = position |
12 |
13 | return part |
14 | end |
15 |
16 | function Part:ChangeColor(color) |
17 | self.newPart.BrickColor = color |
18 | end |
19 |
20 | return Part |
1
It work. Thank you so much :D Block_manvn 395 — 5y
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0
On line 5 you have part instead of Part. Double check your code as lua is case sensitive:
1 | local Part = require(game:GetService("ReplicatedStorage").CreatePart) |
2 |
3 | script.Parent.MouseClick:Connect(function() |
4 | local part = Part.Create("Stuff", game:GetService("Workspace"), Vector3.new(2, 2, 2), Vector3.new(0, 2, 0)) |
5 | Part:ChangeColor(BrickColor.new("Bright green")) |
6 | end) |
0
That won't work, because "Part" is a Module that contain the function to change the color of a part and "part" is a new part that I just made. Block_manvn 395 — 5y