Datum

ID:2864058
 
Apr 8 2023, 4:07 pm
(See the best response by Ter13.)
Code:
Character_Select
    parent_type =/mob

    proc/Select()
        src<<"Welcome to Kings Landing!"
        return ..()


mob/Player
    Select()
        return ..()


Problem description:

Why does this not work? How can this work?
Apr 8 2023, 4:29 pm
Best response
I wouldn't use parent_type like this. It's obscuring the problem you are running into.

mob
    Character_Selection
        proc/Select()
            src << "Welcome to Kings Landing!"
            return ..()
    Player
        Select()
             return ..()


The problem you have run into, is that the proc Select() is defined under /mob/Character_Select, while you are trying to override it on /mob/Player.

This won't work, because /mob/Player has no Select() proc to override. You need to define a proc on a parent type (or the same type) in order to override it.

world
    //set the default mob for players joining the game to /mob/Character_Select
    mob = /mob/Character_Select

mob
    proc
        //define Select() on the common ancestor
        Select()
    Character_Select
        //override Select() for character selection
        Select()
            src << "Select a character!"
            return ..() //this isn't necessary right now
    Player
        //override Select() for players.
        Select()
            src << "Welcome to Kings Landing!"
            return ..() //this isn't necessary right now

//You need to call a function for it to do anything.
mob/Login()
    Select()
    ..()


All children of mob will have the same Login() behavior until it's overridden on a child type. The ..() you keep throwing in when you don't need to, calls the last override in the class hierarchy.

Stay away from parent_type until you really strongly grasp polymorphism and object oriented principles.
Apr 8 2023, 5:58 pm
Ok I thought me putting /mob in parent type would work with all mobs regardless of name
Apr 8 2023, 9:50 pm
parent_type is just a shorthand for setting the parent of a type declaration.