if rand

ID:1440517
 
Dec 8 2013, 12:44 pm
(See the best response by Kaiochao.)
Code:
        if(Enemy_Level > 1 && Enemy_Level < 5)


            var/obj/new_item = (if (rand (1, 7) == 1) ? pick (new/obj/books/firebolt/, \
                                                new/obj/books/icebolt/, \
                                                new/obj/books/lightningbolt/, \
                                                new/obj/books/healing/, \
                                                new/obj/books/novabolt/, \
                                                new/obj/books/icesquirt/, \
                                                new/obj/books/witherbolt/) : null)

            if (new_item)
                new_item.loc = locate(X, Y, Z)
                Drop (new_item)


Problem description: if rand does not work using "?" operator? or am I missing something?

Dec 8 2013, 1:03 pm
You can't use an if statement there like that.
var/num = rand(1,7)
var/obj/new_item = num==1 ? pick(/* stuff */):null
Dec 8 2013, 1:11 pm
Best response
You can't use if() there, just take it out.
var/obj/new_item = rand(1, 7) == 1 ? pick(...)


I'd suggest you do this instead, though:
//  A 1-in-7 chance of
if(prob(100 / 7))  //  or rand(1, 7) == 1, or !rand(6)
    //  choosing a random type to create
    var item_type = pick(
        /obj/books/firebolt,
        /obj/books/icebolt,
        /obj/books/lightningbolt,
        /obj/books/healing,
        /obj/books/novabolt,
        /obj/books/icesquirt,
        /obj/books/witherbolt)
    Drop(new item_type (locate(X, Y, Z)))

That way, you don't create one of every item. You only need to be creating the one item that will be chosen.