Splitting a Lua file up

[Josh]

If you need to split up a Lua file for any reason, you can use require to load a table (or any other value) from another file. The included file will only be run once. Here, I use require to store a component function in another file.

Motion.zip

Extract this to "Source/Components/Motion" if you want to use it.

This probably requires the beta branch to run correctly.

When you use the require command, you are loading a Lua module. This is slightly different from an include file, and can be used to load both Lua scripts and DLLs. Thus, you should not specify the file extension when using this command...just a strange detail of the more advanced Lua functionality.

[Josh]

You can also simply copy a function from one table to another:

local t = {}

function t:Update()
    if self.globalcoords then
        self.entity:Translate(self.movementspeed / 60, true)
    else
        self.entity:Move(self.movementspeed / 60)
    end
    self.entity:Turn(self.rotationspeed / 60, self.globalcoords)
end

Mover = {}
Mover.name = "Mover"
Mover.movementspeed = Vec3(0)--"Movement"
Mover.rotationspeed = Vec3(0,1,0)--"Rotation"
Mover.globalcoords = false--"World space"

Mover.Update = t.Update

RegisterComponent("Mover", Mover)

return Mover

 

[Josh]

This would also work:

function MyUpdateFunction(self)
    if self.globalcoords then
        self.entity:Translate(self.movementspeed / 60, true)
    else
        self.entity:Move(self.movementspeed / 60)
    end
    self.entity:Turn(self.rotationspeed / 60, self.globalcoords)
end

Mover = {}
Mover.name = "Mover"
Mover.movementspeed = Vec3(0)--"Movement"
Mover.rotationspeed = Vec3(0,1,0)--"Rotation"
Mover.globalcoords = false--"World space"

Mover.Update = MyUpdateFunction

RegisterComponent("Mover", Mover)

return Mover