Need help with walking NPCs

ID:647362
 
Apr 9 2012, 12:54 am
Keywords: ai, coding, help, npc, walking
Code:
mob
 Wondering_Seed_Salesman
  icon = 'NPCs.dmi'
  icon_state = "Salesman"
  name = "{NPC}Traveling Seed Salesman"
  verb
   Talk()
    set category = "NPC's"
                set src in oview(2)
    switch(input("Would you like to trade some gold for seeds?", text) in list ("Yes","No"))
              if("Yes")
               if(usr.gold >= 50)
                usr << "Alrighty, it was nice doing business with you!"
                usr << "Come back anytime, okay?"
                usr.gotseeds += 5
               if(usr.gold <= 49)
                usr << "Sorry buddy, Standard price is 50 gold, go kill some wolves or something"
              else
               return


Problem description:

I need to get this guy to walk back and forth in a straight line.

I don't want him to walk around the map randomly, just up and down the road.

I have tried making different procs to try to get things to move in a straight line, but I can't get them to actually move. Could anyone please help me out?
Apr 9 2012, 2:57 am
Look up step use attributes such as

NORTH
SOUTH
WEST
EAST etc

Create a type of path finding procedure.

Search the resources or forums.
Apr 9 2012, 12:26 pm
 
proc
    Path_set(var/atom/movable/M, list/sequence, delay = 10, distance = 1, Rand_step_interval = 0, loop = 0)
        var/valid = list(NORTH, SOUTH, EAST, WEST, NORTHWEST, SOUTHEAST, NORTHEAST ,SOUTHWEST)
        var/list/path = list()
        var/list/rand_sequence = list()
        do
            rand_sequence = list(null)
            path = list(null)
            if(length(sequence) < 1)
                while(length(rand_sequence) <4)
                    var/N = pick(NORTH, SOUTH, EAST, WEST)
                    rand_sequence += N
                    sleep(1)

            if(Rand_step_interval && delay <5)
                delay = 5
            if(length(sequence) < 1)
                for(var/P in rand_sequence)
                    path += P
            else
                for(var/P in sequence)
                    path += P

            for(var/D in path)
                if(D in valid)
                    var/repeats = round(distance*32/M.step_size)
                    while(repeats > 0)
                        step(M, D)
                        sleep(1)
                        repeats --
                if(Rand_step_interval)
                    sleep(rand(delay-5,delay+5))
                else
                    sleep(delay)
        while(loop)
        
mob
    verb
        StartCutScene()
            set background=1
            var/mob/Wondering_Seed_Salesman = /mob/Wondering_Seed_Salesman
            for(var/mob/m in world)
                if(istype(m, Wondering_Seed_Salesman))
                    Path_set(m, list(EAST, WEST),  1, 15,  0, 1)
                    
                    
mob
 Wondering_Seed_Salesman
  icon = 'basedemon.dmi'
  icon_state = "salesman"
  name = "{NPC}Traveling Seed Salesman"
  npc = 0
  cantdie = 1 
  verb
   Talk()
    set category = "NPC's"
                set src in oview(2)
    switch(input("Would you like to tade some trade some gold for seeds?", text) in list ("Yes","No"))
              if("Yes")
               if(usr.gold >= 50)
                usr << "Alrighty, it was nice doing business with you!"
                usr << "Come back anytime, okay?"
                usr.gotseeds += 5
               if(usr.gold <= 49)
                usr << "Sorry buddy, Standard price is 50 gold, go kill some wolves or something"
              else
               return


I found this in the resources and set it up for him... With the verb I can get him to walk back and forth once, how ever if I try and set it to loop it doesn't do anything at all.

I have tried making it a proc and making it start up with the game, log in, verbs, every time the same problem happens, if I don't have it looping it will go once, but if I try and loop it so he is always walking back and forth nothing happens.

I tried
Path_set(m, list(EAST, WEST),  1, 15,  0, 1)

like the resource said, and it works in the resource demo. but mine only works if the last 1 is 0... Then it wont work, So I tried hooking the proc inside it's self like an auto save, but that made it not walk at all again, same with a goto. I tried setting it to background and setting the loop checks to 0. And it is always the same result. If it's not looping it works fine, as soon as I try to loop it in anyway it stops working all together, Any ideas?
Apr 9 2012, 1:05 pm
Do you think I would be able to get away with making like... a pressure plate at the start of his walk. so when he returns he triggers the plate to make the proc run again? or is there a simpler way I am just missing...
Apr 9 2012, 3:22 pm
Okay, In case anyone else finds this and has a similar problem making a cross turf with the StartCutScene proc effect worked, as long as nothing blocks his path he will/should keep walking in his pattern around the path :) Thanks for the help and if anyone wants the original stuff I used it is from GreatFisher and it is called "Path_set Library".
Apr 9 2012, 7:01 pm
 
atom/movable/proc/Path_Set(delay,list/movement,repeat)
    do
        for(var/i=1,i<=movement.len,i++)
            var/check1="[src.x][src.y][src.z]"
            sleep(delay)
            step(src,movement[i])
            var/check2="[src.x][src.y][src.z]"
            if(check1==check2)i--
    while(repeat)

client/New()
    ..()
    mob.icon='demo.dmi'
    mob.icon_state="mob"
    mob.loc=locate(5,5,1)

turf
    Grass
        icon='demo.dmi'
        icon_state="turf"

mob/NPC
    icon='demo.dmi'
    icon_state="mob"
    New()
        spawn(1)src.Path_Set(delay=5,movement=list(NORTH,EAST,SOUTH,WEST),repeat=1)