Ok, heres my seeking missile code again, with some changes.

ID:148552
 
Jan 1 2003, 8:58 pm
Theres just a couple problems, when you get 3 or 4 mobs within range, the missile goes crazy, is there a way to select one mob within range and only track that mob? A way that will work with what I have here that is, if it wont work ill have to make it work.

    hsmissile
        icon_state = "hsmissile"
        New()
            spawn(55)
                del(src)
            spawn(5)
                Seek()
        proc/Seek()
            var/mob/M
            var/N=NORTH ; var/NE=NORTHEAST ; var/E=EAST ; var/SE=SOUTHEAST ; var/S=SOUTH ; var/SW=SOUTHWEST ; var/W=WEST ; var/NW=NORTHWEST
            var/one = turn(src.dir, 45) ; var/two = turn(src.dir, -45)
            for(M in oview(6))
                var/D = get_dir(src,M)
                if(D == N) {if(src.dir == N) ..();if(src.dir == NE) src.dir = one ;if(src.dir == E) src.dir = one ;if(src.dir == SE) src.dir = one ;if(src.dir == S) src.dir = one ;if(src.dir == SW) src.dir = two ;if(src.dir == W) src.dir = two ;if(src.dir == NW)src.dir = two }
                if(D == NE) {if(src.dir == N) src.dir = two ;if(src.dir == NE) ..();if(src.dir == E) src.dir = one ;if(src.dir == SE) src.dir = one ;if(src.dir == S) src.dir = one ;if(src.dir == SW) src.dir = one ;if(src.dir == W) src.dir = two ;if(src.dir == NW)src.dir = two }
                if(D == E) {if(src.dir == N) src.dir = two ;if(src.dir == NE) src.dir = two ;if(src.dir == E) ..();if(src.dir == SE) src.dir = one ;if(src.dir == S) src.dir = one ;if(src.dir == SW) src.dir = one ;if(src.dir == W) src.dir = one ;if(src.dir == NW)src.dir = two }
                if(D == SE) {if(src.dir == N) src.dir = two ;if(src.dir == NE) src.dir = two ;if(src.dir == E) src.dir = two ;if(src.dir == SE) ..();if(src.dir == S) src.dir = one ;if(src.dir == SW) src.dir = one ;if(src.dir == W) src.dir = one ;if(src.dir == NW)src.dir = two }
                if(D == S) {if(src.dir == N) src.dir = two ;if(src.dir == NE) src.dir = two ;if(src.dir == E) src.dir = two ;if(src.dir == SE) src.dir = two ;if(src.dir == S) ..();if(src.dir == SW) src.dir = one ;if(src.dir == W) src.dir = one ;if(src.dir == NW)src.dir = one }
                if(D == SW) {if(src.dir == N) src.dir = one ;if(src.dir == NE) src.dir = two ;if(src.dir == E) src.dir = two ;if(src.dir == SE) src.dir = two ;if(src.dir == S) src.dir = two ;if(src.dir == SW) ..();if(src.dir == W) src.dir = one ;if(src.dir == NW)src.dir = one }
                if(D == W) {if(src.dir == N) src.dir = one ;if(src.dir == NE) src.dir = one ;if(src.dir == E) src.dir = two ;if(src.dir == SE) src.dir = two ;if(src.dir == S) src.dir = two ;if(src.dir == SW) src.dir = two ;if(src.dir == W) ..();if(src.dir == NW)src.dir = one }
                if(D == NW) {if(src.dir == N) src.dir = one ;if(src.dir == NE) src.dir = one ;if(src.dir == E) src.dir = one ;if(src.dir == SE) src.dir = two ;if(src.dir == S) src.dir = two ;if(src.dir == SW) src.dir = two ;if(src.dir == W) src.dir = two ;if(src.dir == NW) ..()}
                walk(src,src.dir,2)
                spawn(5)
                    Seek()

    Bump(mob/M)
        if(istype(M,/mob))//if its a mob
            world<<"[M] was shot by [src.owner]'s heet seeking missile."
            del(src)//delete the obj that hit the mob
        else
            del(src)
            ..()<dm>
And then the verb to fire the missile is 
<dm>
        fire_heat_seeker()
            var/obj/hsmissile/H = new(usr.loc)
            H.owner = usr.name
            H.dir = usr.dir
            walk(H,H.dir,2)
<dm>

I'm assuming youll ask why im not working with bit flags Lummox, well i couldnt figure it out, i need some time to get used to them.
Jan 1 2003, 10:26 pm
Jotdaniel wrote:
Theres just a couple problems, when you get 3 or 4 mobs within range, the missile goes crazy, is there a way to select one mob within range and only track that mob? A way that will work with what I have here that is, if it wont work ill have to make it work.

Instead of looping through mobs in Seek(), when the missile is first spawned you should give it a target right then and there. If it doesn't have one, it should go straight, possibly locking onto a target if one comes into range.
obj/hsmissile
  ...
  var/mob/owner
  var/atom/target

  New(newloc,firedby)
    owner=firedby
    dir=owner.dir
    spawn(55) del(src)
    // call Seek() now so the missile will move 1 space away from firedby.loc
    Seek()

  proc/Seek()
    // if no target yet, acquire one
    if(!target)
      for(var/mob/M in oview(src))
        if(M!=owner)
          target=M
          break
    if(target)
      ...   // calculate turning here
    step(src,dir)
    spawn(5) Seek()

  Bump(mob/M)
    if(istype(M,/mob))  //if its a mob
      world<<"[M] was shot by [src.owner]'s heet seeking missile."
    // you call this one way or the other, so move it out of the if block
    del(src)
    // don't call ..(); there's no point

And then the verb to fire the missile is
fire_heat_seeker()
  var/obj/hsmissile/H = new(usr.loc)
  H.owner = usr.name
  H.dir = usr.dir
  walk(H,H.dir,2)

This wouldn't be the best way to go about this; instead, using the New() code I did above where the player who fired is a 2nd argument to new():
fire_heat_seeker()
  var/obj/hsmissile/H = new(usr.loc,usr)
All you need to do is tell the missile who fired; it will make a note of who fired it, orient itself to the player's direction, and start moving on its own. I'd manually step() it each time instead of relying on walk(), though, like I did above.

I'm assuming youll ask why im not working with bit flags Lummox, well i couldnt figure it out, i need some time to get used to them.

Most of that code is cut & paste, though; it shouldn't be hard to adapt to what you have. I can't fault you for not understanding them, though; a lot of what I wrote there was brand new to me, something I'd just come up with.

Lummox JR
Jan 2 2003, 12:20 am
In response to Lummox JR
Wow, that helped a lot. Thanks, that was just what I needed, although I prefer to use walk because the missile isnt supposed to be perfect in tracking, like a real missile isnt. Thanks a lot for all the help Lummox.