In-Game Clock Display

using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/UI }
using { /UnrealEngine.com/Temporary/SpatialMath }
using { /Verse.org/Simulation }
using { /Fortnite.com/UI }
using { /Verse.org/Colors/NamedColors }

StringToMessage<localizes>(value:int, value2:int, value3:int) : message = "{value}:{value2}:{value3}"
StringToMessageZero<localizes>(value:int, value2:int, value3:int) : message = "0{value}:0{value2}:0{value3}"
StringToMessageZeroS<localizes>(value:int, value2:int, value3:int) : message = "0{value}:{value2}:0{value3}"
StringToMessageZeroM<localizes>(value:int, value2:int, value3:int) : message = "0{value}:0{value2}:{value3}"

MakeCountupTimer<constructor><public>(InPlayer : agent) := countup_timer:
    ElapsedTime := 0.0
    MaybePlayerUI := option{GetPlayerUI[player[InPlayer]]} 

countup_timer := class:
    block:
        set Canvas = canvas:
            Slots := array:
                canvas_slot:
                    Anchors := anchors:
                        Minimum := vector2{X := 0.5, Y := 0.05}
                        Maximum := vector2{X := 0.0, Y := 0.0}
                    Alignment := vector2{X := 0.0, Y := 0.0 }
                    Offsets := margin{Top := 0.0, Left := 0.0, Bottom := 0.0, Right := 0.0}
                    SizeToContent := true
                    Widget := ElapsedTimeTextBlock 

    CountdownEndedEvent<public> : event(float) = event(float){}

    StartCountdown<public>() : void =
        if (PlayerUI := MaybePlayerUI?):
            PlayerUI.AddWidget(Canvas)
            UpdateUI()
            spawn:
                RunCountdown()

    MaybePlayerUI<internal> : ?player_ui = false
    var ElapsedTime<internal> : float = 0.0
    ElapsedTimeTextBlock<private> : text_block = text_block{}
    ElapsedTimeText<localizes><private>(CurrentElapsedTime : int) : message = "{CurrentElapsedTime}"
    var Canvas<private> : canvas = canvas{}
    TimerTickPeriod<private> : float = 1.0
    
    RunCountdown<private>()<suspends> : void =
        ElapsedTimeTextBlock.SetTextColor(White)
        loop:
            Sleep(TimerTickPeriod)
            set ElapsedTime += TimerTickPeriod
            UpdateUI()

    
    UpdateUI<private>() : void =
        if (IntTime := Int[ElapsedTime]):
            var seconds : int = IntTime
            var minutes : int = 0
            loop:
                if (seconds < 60):
                    break
                set seconds -= 60
                set minutes += 1
            var hours : int = 0
            loop:
                if (minutes < 60):
                    break
                set minutes -= 60
                set hours += 1
           if (seconds > 9 and minutes > 9):
                ElapsedTimeTextBlock.SetText(StringToMessage(hours,minutes,seconds))
           else if (seconds > 9 and minutes < 9):
                ElapsedTimeTextBlock.SetText(StringToMessageZeroM(hours,minutes,seconds))
           else if (seconds < 9 and minutes > 9):
                ElapsedTimeTextBlock.SetText(StringToMessageZeroS(hours,minutes,seconds))
           else:
                ElapsedTimeTextBlock.SetText(StringToMessageZero(hours,minutes,seconds))