Icon Shift in Developer Help

ID:146114
 
Sep 1 2005, 10:53 pm
Code:
            W
                name = "wall"
                icon_state = "W"
                Enter()
                    call(contents:mob,mob.icon.Shift)(WEST,4)
                    return ..()
                Exit()
                    call(contents:mob,mob.icon.Shift)(EAST,4)
                    return ..()


Problem description:

I am trying to make the icon so when it is entered the mob the mob of the icon is shifted, but I couldnt figure out how to reference the shift proc or the mob icon itself. This is what I have.
#1 Sep 2 2005, 5:45 am
First, when something successfully goes into a turf (I assume, since you didn't specify whether it's a turf, or anything else), you should call Entered(). Enter() should be used to see whether something can enter the place, or not.

You shouldn't need to use call() in this situation.

mob/var
  oldicon  // when you use Shift(), the icons can lose data at the other side if you don't want to 

w
  Entered(atom/movable/A)
    if(ismob(A))
      var/mob/M=A
      var/icon/I = new(M.icon) // define the icon in another var
      I.Shift(WEST, 4) // shift the icon four pixels
      M.oldicon = M.icon  // backup the icon
      M.icon = I // set the icon 
    return ..()
  Exited(atom/movable/A)
    if(ismob(A))
      var/mob/M=A
      if(M.oldicon) M.icon=oldicon // revert to the old icon
    return ..()


I really don't see the need to use Shift() when you can set the pixel_x of the item. Using this might not be the best thing for what you want. A better way to do it is just to set pixel_x.

w
  Entered(atom/movable/A)
    if(ismob(A))
      A.pixel_x = 4
    return ..()
  Exited(atom/movable/A)
    if(ismob(A))
      A.pixel_x = 0
    return ..()


Use whichever fits what you need. If you actually need to shift the icon, then use the above one.

~~> Dragon Lord
#2 Sep 2 2005, 12:32 pm
In response to Unknown Person (#1)
alright thanks