Presence of object causes movement to change

ID:1824886
 
Apr 4 2015, 8:19 pm
(See the best response by Ter13.)
Code:
obj
    verb
        PickUp()
            set category = null
            set src in oview(0)
            src.Move(usr)
        Drop()
            set category = null
            set src in usr
            if(src.suffix == "Equipped")
                usr << "\red Unequip the [src] first!"
            else
                src.Move(usr.loc)
    var/sellvalue
    proc/usingheal(var/obj/items/J,amount)
        var/mob/player/M
        M = usr
        if (amount > (M.maxHP-M.HP))
            amount = (M.maxHP-M.HP)
        M.HP += amount
        usr << "You used a [J]; <b>[amount] HP restored"
        Del(src)
    items
        potions
            icon = 'potions.dmi'
            healingpot
                name = "Healing Salve"
                icon_state = "red"
                sellvalue = 25
                desc = "<b>Healing Salve</b>:  Restores up to 50 HP"
                verb/Use()
                    set category = null
                    set src in usr
                    usingheal(src,50)


Problem description:

When I have this in the code, all is well. However, when obj/items/potions/healingpot is placed on the map near the spawn, my mob (as well as local NPC mobs that move randomly) lose the movement state and rather than a smooth transition over the 32 pixel jump, the mobs basically teleport from the initial spot to the next tile over.

Very odd, and I have no idea how to go about fixing this.

Any insight would be greatly appreciated!
Apr 4 2015, 8:35 pm
This wouldn't be caused by your healing potion. What's happening is something is kicking your world into pixel movement mode. Something has changed the bounds, step_size, or step_x/y variable of an object somewhere in your world and it's now thinking the game is in pixel movement mode.
Apr 4 2015, 8:38 pm
In response to Ter13
Ter13 wrote:
This wouldn't be caused by your healing potion. What's happening is something is kicking your world into pixel movement mode. Something has changed the bounds, step_size, or step_x/y variable of an object somewhere in your world and it's now thinking the game is in pixel movement mode.

That's what I was thinking, but when I delete the potion the movement returns to normal. I repeated the placement/deletion 3-4 times to confirm.
Apr 4 2015, 8:47 pm
Did you place the object on the map with step_x/step_y changed? Did you nudge the object on the map at all?
Apr 4 2015, 8:48 pm
Nope, each placement was just the typical click to place. No nudges or step_x/step_y changes in the code. This is why I'm so confused!

If I run the game without the potion it's fine, but I simply place the potion on the ground and the pixel movement begins.
Apr 4 2015, 8:55 pm
Would you mind zipping up your source and PMing me a copy so I can take a look? I'm pretty sure it'll be faster for me to diagnose your issue than to go back and forth.
Apr 4 2015, 8:56 pm
Yeah, of course. Just an extra note, I had an NPC give me a knife to see if it would have the same effect. Not sure what that's about either.

Give me a minute. And don't hate on the sloppiness, it's been years since I've dabbled haha.
Apr 4 2015, 9:14 pm
Best response
Found it.

Login.dm line 33 and 34.

obj
    step_size = 8


You left the step_size of objects at 8. Just remove line 33 and 34 completely, and remove line 10 completely

mob
    step_size = 32


^That's line 10. If you don't want to use pixel movement mode, just don't set step size to a value at all. It defaults to your icon size, so there's no need to set it at all if you want to use tiled movement.
Apr 4 2015, 9:16 pm
Good lord. I knew it had to be something stupid on my part.
I think those were a couple of the lines that were default when I crated the environment.
Thank you very much! I appreciate the help! :)