Connecting Walls

ID:262518
 
Jul 24 2005, 11:54 am
Code:
turf
    wall
        density=1
        icon='wall.dmi'
        proc/Update()
            var/state=0
            for(var/turf/wall/W in get_step(src,NORTH))
                if(W)
                    state+=1 //wasn't sure if the constants would give the right icon states.
                    break
            for(var/turf/wall/W in get_step(src,SOUTH))
                if(W)
                    state+=2
                    break
            for(var/turf/wall/W in get_step(src,WEST))
                if(W)
                    state+=4
                    break
            for(var/turf/wall/W in get_step(src,EAST))
                if(W)
                    state+=8
                    break
            src.icon_state="[state]"
        New()
            ..()
            for(var/turf/wall/W in view(1))
                W.Update()


Problem description: The problem, short and simple, the icon states don't change.
Jul 24 2005, 12:18 pm
When you use "for(var/turf/wall/W in get_step(src, NORTH)", think of what you are actually trying to achieve.

Simply, you are trying to search for turfs in the contents of another turfs, and we know that's not possible. Only one turf is able to be in one tile. So basically "state" will never budge. Also, the if(W) statement is not needed.

Here's an example of what could simulate what you are trying to do:

turf/wall
  proc/Update()
    var/state = 0
    if(istype(get_step(src, NORTH), /turf/wall)) state += 1
    // get_step() returns a turf, so we just check if the turf is that wall we want.
    if(istype(get_step(src, SOUTH), /turf/wall)) state += 2
    // etc


Or to make it more efficient for your own needs, you could do this.

turf/wall
  proc/Update()
    var/state = 0
    for(var/i in list(1,2,4,8))
      if(istype(get_step(src,i),/turf/wall)) state+=i
    src.icon_state="[state]"


~~> Dragon Lord
Jul 24 2005, 3:02 pm (Edited on Jul 24 2005, 3:39 pm)
In response to Unknown Person
Thanks that helped and worked. I just need help now when I destroy a wall. I had a slight problem before because I updated the surrounding walls before I deleted "dead" wall. However, I fixed that by creating a sort of place holder so it could be deleted but the surrounding walls would still be updated.

Here's my code
turf
    wall
        Del()
            var/area/L=src.loc
            ..()
            for(var/turf/wall/W in oview(L,1))
                W.Update()


I also tried using an obj, but that didn't work either. Any help is appreciated. Thank you.

[EDIT] The weirdest part is, it updates pretty much all the other turfs in the world except the surrounding ones.
Jul 24 2005, 4:11 pm
In response to Dark Weasel
turf
wall
Del()
var/area/L=src.loc
..()// It is being deleted here... Therefore the rest of the proc isn't being executed...
for(var/turf/wall/W in oview(L,1))
W.Update()
Jul 25 2005, 4:06 am
In response to Hiddeknight
Then I don't know what to do for that.

I can't think of a way to get it to work.
Jul 25 2005, 5:02 am
In response to Dark Weasel
Try this:

turf/wall
    Del()
    for(var/turf/wall/W in oview(src,1))
        W.Update(src)
        ..()

    proc/Update(turf/Ignore)
    var/state = 0
    for(var/i in list(1,2,4,8))
        var/turf/T = get_step(src,i)
        if(T == Ignore) continue
        if(istype(T,/turf/wall)) state+=i
    src.icon_state="[state]"


~X
Jul 25 2005, 5:40 am
I've written a pretty thorough article on autojoining walls that should help you out:

Dream Tutor: All Together Now

You should also check out Pmikell's page on the subject, linked from that article.

Lummox JR
Jul 25 2005, 6:43 am
In response to Lummox JR
Thanks Lummox and Xooxer.