How do I get a UI Button in verse to communicate with a function passing an agent?

Development Programming & Scripting Verse
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1

how does one get an Agent from someone pressing a button in a custom UI? I’ve been working on some verse coding and am trying to increase a player’s health with persistence. I’ve been using a trigger to communicate between UI and the Function.

HealthBought(MaybeAgent:?agent):void=
        if(Agent:=MaybeAgent?, FortChar := Agent.GetFortCharacter[]):

That is what I have been attempting to do and that seems to temporarily work, but not save to persistence between sessions

2

Hello! It looks like there are potentially two issues you’re having, so let’s tackle them one at a time.

First, have you had a chance to review the persistence documentation and make sure you’re reading and writing to the weak_map correctly? You can find that here.

Here is a very minimal example of attaching a callback to a button in the world, and upping an integer that is stored in a persistent weak map. Hopefully this helps!

using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/UI }

var MySavedPlayerData:weak_map(player, int) = map{}

hello_world_device := class(creative_device):

    @editable
    Button:button_device = button_device{}

    InteractedWithEventHandler(Agent:agent):void=
        if:
            Player := player[Agent]
            Player.IsActive[]
            Num := MySavedPlayerData[Player]
            set MySavedPlayerData[Player] = Num + 1
        then:
            Print("Num {Num}")

    OnBegin<override>()<suspends>:void=

        for (Player : GetPlayspace().GetPlayers()):
            if:
                Player.IsActive[]
                not MySavedPlayerData[Player]
                set MySavedPlayerData[Player] = 0
    

        Button.InteractedWithEvent.Subscribe(InteractedWithEventHandler)
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3

Hey I understand this isn’t a full fletched out code but shouldn’t there be an Player.IsActive[] check before doing anything with player weak_maps to prevent a verse runtime error?
Was just wondering if its safe to not include it because button events should be instantaneous

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4

Thank you! Added :smiley:

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