Check For Blockage in Developer Help

ID:573750
 
Mar 24 2012, 10:44 pm
(See the best response by Robertbanks2.)
Okay so I have an object called /obj/Doors/Metal_Door. Before it closes I would like it to make a check that there are no mobs at it's location but I've been 100% unsuccessful.

Objects unfortunately don't have oview() or view() and when I do var/mob/M = /mob if(M in contents) it can't find anything so I'm stumped. If it's not in the contents and I can't check what's visible then how can I check if there's anything there?

I also tried placing a temporary mob object at the doors location but for strange reason it was duplicating the player and leaving them in the doorway even though I specified a mob of type mob/Holder.

I don't know. Any help? Thank you.
#1 Mar 24 2012, 11:04 pm
You can use for(mob in loc) to find out if there is a mob there. When you reference an obj or mob's loc, it will use the turf that they're standing on or the container that they're in(such as a mob's inventory).
#2 Mar 24 2012, 11:09 pm
That worked great, thanks. Here's what I came up if you're interested, it's probably one of those cases where it's wrong but works.

                var/mob/M = /mob
                
                var/Blocked = 1
                while(Blocked)
                
                    var/Found
                    for(M in loc)
                        Found = 1
        
                    if(Found)
                        sleep(20)
                    else
                        Blocked = 0
#3 Mar 24 2012, 11:32 pm
Best response
There's some optimization to be done here. You could always just remove the last bit and the Found var and use continue/labels, like this:

obj/Doors/Close()
  Can_Close: //This sets a label for the while(Blocked) loop
    while(Blocked)
      for(mob/M in loc) //Checks for mobs in loc, obviously
        sleep(20)
        continue Can_Close //continues the while() loop
      Blocked = 0
      //close the door here


I imagine other people could further optimize this, but as far as I can tell(it's written from memory and untested), it should work fine.