Returning to a specific step during character creation.

ID:1684178
 
Sep 21 2014, 5:36 am
(See the best response by GhostAnime.)
Code:
mob
    proc
        new_char()
            src.choose_name()
            src.loggedIn=1
            // below is demo stuff
            switch(input("Please select your gender") in list ("Male","Female"))
                if("Male")
                    switch(input("Please select a race") in list ("Human","Drugan","Birdon","Moanky"))
                        if("Human")
                            switch(input("Please select skin a tone") in list ("White","Tan","Black"))
                                if("White")
                                    //Generate player and place them in the world.
                                    //Add hair later.
                                    select_class
                                    switch(input("Great now that we know what you look like, please select a class. You can't change this later so choose wisely.") in list ("Mage","Rogue","Soldier","Warrior"))
                                        if("Mage")
                                            switch(input("You can't change this later. Are you sure you want the Mage?") in list ("Yes","No"))
                                                if("No")
                                                    return select_class


Problem description:
So what i am trying to do is make it so when a player selects their class they get a warning, "You can't change this later. Are you sure about this?" and then they can say yes or no. When they say no i want them to return to te class
Sep 21 2014, 6:07 am
Best response
First off, why do you have class options under the gender options? Unless you plan to make some classes gender specific, this would cause you to copy/paste and must be edited in two places to fix a specific issue if one arrises.

A more sufficient way is to separate it: 
src.gender = lowertext(input("Please select your gender") in list ("Male","Female"))  //  Yes, there is a gender variable defined in BYOND. So if you use \his[src] or \her[src], it would use the correct his/her depending on the gender

var/Classes = list ("Human" = list("White","Tan","Black"),"Drugan","Birdon","Moanky") + \
(src.gender == "male")?"Wizard":"Witch"  //  X?Y:Z is a compact if() saying if(X){return Y}else{return Z}. 

src.class = null

while(!src.class)
   src.class = input("What class do you want to be in?", "Class") in Classes

  if(istype(Classes[src.class], /list))  //  If a list is found as a value of the entry, it is assumed it is a skin choice
       src.skin = input("What skin tone do you want have", "Skin Tone") in Classes[src.class]

   if("No" == alert("Are you sure you want to be a [src.gender] [src.skin] [src.classes]?", "Confirmation", "No", "Yes")
         src.class = null
        //  Since class is now null, the while() will repeat back from the top.

src << "Welcome to THE VOID!"
src.z = 0