### Get Closest Player - Spatial Query in Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A Verse device that finds the nearest player to a specified viewpoint. It iterates through all fort_characters, calculates distances, and returns the closest one. Dependencies include Fortnite.com/Characters and UnrealEngine.com/Temporary/SpatialMath.

```verse
using { /Fortnite.com/Characters }
using { /UnrealEngine.com/Temporary/SpatialMath }

get_closest_player := class(creative_device):
    GetClosestPlayerToViewpoint(AllPlayers: []player, Viewpoint:vector3, InitialCharacter: fort_character): fort_character =
        var ClosestCharacter : fort_character = InitialCharacter
        var ClosestDistance: float = 1000000000.0
        for (Player : AllPlayers):
            if (FNCharacter : fort_character = Player.GetFortCharacter[]):
                if (FNCharacter <> InitialCharacter):
                    PlayerLocation := FNCharacter.GetTransform().Translation
                    EDistance := Distance(Viewpoint, PlayerLocation)
                    if (EDistance < ClosestDistance):
                        set ClosestCharacter = FNCharacter
                        set ClosestDistance = EDistance
        return ClosestCharacter
```

--------------------------------

### UEFN Hello World Device - Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A basic UEFN Verse device demonstrating the fundamental structure and the OnBegin lifecycle method. It requires no external dependencies and prints 'Hello, world!' and a simple calculation to the output log.

```verse
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }

hello_world_device := class(creative_device):
    OnBegin<override>()<suspends>:void=
        Print("Hello, world!")
        Print("2 + 2 = {2 + 2}")
```

--------------------------------

### Handle Optionals Safely in Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Illustrates the use of Verse's optional types (`?`) to safely manage values that might not be present. It shows how to subscribe to an event and use the optional value to trigger another device.

```verse
using { /Fortnite.com/Devices }

my_device := class<concrete>(creative_device):
    var SavedPlayer : ?player = false

    @editable PlayerSpawn : player_spawner_device = player_spawner_device{}
    @editable Trigger : trigger_device = trigger_device{}

    OnBegin<override>() : void = 
        PlayerSpawn.PlayerSpawnedEvent.Subscribe(OnPlayerSpawned)

    OnPlayerSpawned(Player : player) : void = 
        set SavedPlayer = option{Player}
        if (TriggerPlayer := SavedPlayer?):
            Trigger.Trigger(TriggerPlayer)
```

--------------------------------

### Instant Spawn - Immediate Respawn System

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Respawns players immediately after elimination with minimal delay. It subscribes to an elimination manager's EliminatedEvent and calls the Agent.Respawn function with a configured position.

```Verse
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }

instant_spawn := class(creative_device):
    respawnposition: vector3=vector3{X:=0.0,Y:=0.0,Z:=0.0}
    @editable ElimManager: elimination_manager_device = elimination_manager_device{}

    OnBegin<override>()<suspends>:void=
        ElimManager.EliminatedEvent.Subscribe(OnEliminated)

    OnEliminated(Agent:agent):void=
        spawn:
            RespawnEvent(Agent)

    RespawnEvent(Agent:agent)<suspends>:void=
        Sleep(0.1)
        Agent.Respawn(respawnposition,rotation{})

```

--------------------------------

### Player Stats Manager System in Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A Verse implementation for managing player statistics. It defines abstract stat types, concrete stat implementations (Score, Win, Loss), and provides methods to retrieve and record player stats.

```verse
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }

stat_type := class<computes><unique><abstract>:
    DebugString():string

StatType := module:
    score_stat<public> := class<computes><unique>(stat_type):
        DebugString<override>():string = "Score"

    Score<public>:score_stat = score_stat{}
    Win<public>:win_stat = win_stat{}
    Loss<public>:loss_stat = loss_stat{}

player_stats_manager := class():
    GetPlayerStats(Agent:agent)<decides><transacts>:player_stats_table=
        var PlayerStats:player_stats_table = player_stats_table{}
        if:
            Player := player[Agent]
            PlayerStatsTable := PlayerStatsMap[Player]
            set PlayerStats = MakePlayerStatsTable(PlayerStatsTable)
        PlayerStats

    RecordPlayerStat(Agent:agent, Stat:stat_type, ?Wins:int = 0):void=
        if:
            Player := player[Agent]
            PlayerStatsTable := PlayerStatsMap[Player]
            if(Stat = StatType.Score):
                WinStat := PlayerStatsTable.Wins
                set PlayerStatsMap[Player] = player_stats_table:
                    MakePlayerStatsTable<constructor>(PlayerStatsTable)
                    Wins := MakeUpdatedPlayerStat(WinStat, Wins)
```

--------------------------------

### Boss Device - AI Following System

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Creates an AI boss that continuously tracks and moves toward the player. It uses prop movement and rotation calculations, subscribing to a mutator zone's AgentEntersEvent to initiate the follow behavior.

```Verse
using { /Fortnite.com/Devices }
using { /Fortnite.com/Characters }
using { /UnrealEngine.com/Temporary/SpatialMath }

BossDevice := class(creative_device):
    @editable Bossprop : creative_prop = creative_prop{}
    @editable Zonedevice : mutator_zone_device = mutator_zone_device{}

    OnBegin<override>()<suspends>:void=
         Zonedevice.AgentEntersEvent.Subscribe(OnTriggered)

    OnTriggered(Agent: agent):void = 
        spawn{FollowPlayer()}

    FollowPlayer()<suspends>:void = 
        loop:
            Sleep(0.01)
            if (PlayerList := GetPlayspace().GetPlayers(), FortCharacter := PlayerList[0].GetFortCharacter[]):
                Playerpostion : vector3 = FortCharacter.GetTransform().Translation
                Proptranslation : vector3 = Bossprop.GetTransform().Translation
                VectorToPlayer : vector3 = Playerpostion - Proptranslation
                RadiansVectorToPlayer: float = ArcTan(VectorToPlayer.X, VectorToPlayer.Y) - (PiFloat / 2.0)
                NewRotation : rotation =MakeRotation(axis := ProptranslationAxis, AngleRadians := RadiansVectorToPlayer)
                Bossprop.MoveTo(Playerpostion, NewRotation, 1.0)
            else:
                 break

```

--------------------------------

### Countdown Timer UI - Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A reusable countdown timer class implemented in Verse, featuring canvas-based UI, event signaling, and dynamic time adjustment. It depends on Verse.org/Simulation, Fortnite.com/UI, and UnrealEngine.com/Temporary/UI. The timer signals an event when countdown ends and allows adding time.

```verse
using { /Verse.org/Simulation }
using { /Fortnite.com/UI }
using { /UnrealEngine.com/Temporary/UI }

MakeCountdownTimer<constructor><public>(MaxTime : float, InPlayer : agent) := countdown_timer:
    RemainingTime := MaxTime
    MaybePlayerUI := option{GetPlayerUI[player[InPlayer]]}

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

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

    AddRemainingTime<public>(Time : float) : void =
        set RemainingTime += Time
        UpdateUI()
        spawn:
            AddedTimeCallout(Time)

    RunCountdown<private>()<suspends> : void =
        loop:
            Sleep(TimerTickPeriod)
            set TotalTime += TimerTickPeriod
            set RemainingTime -= TimerTickPeriod
            UpdateUI()
            if (RemainingTime <= 0.0):
                Canvas.RemoveWidget(RemainingTimeTextBlock)
                if (UI := MaybePlayerUI?):
                    UI.RemoveWidget(Canvas)
                CountdownEndedEvent.Signal(TotalTime)
                break
```

--------------------------------

### Verse Custom Horizontal Progress Bar UI

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A customizable horizontal progress bar UI element with smooth lerp animation for progress updates. It allows for configuration of background, foreground, and border colors, as well as widget dimensions. The progress is displayed as a percentage.

```verse
using { /Fortnite.com/UI }
using { /UnrealEngine.com/Temporary/UI }
using { /Verse.org/Simulation }

custom_progress_bar := class:
    var<private> BackgroundColor : color
    var<private> ForegroundColor : color
    var<private> BorderColor : color
    var<private> XSize : float
    var<private> YSize : float
    var<private> ProgressPercent<private> : float = 0.0

    Init<public>() : overlay  =
        TextBlockProgress.SetTextOpacity(0.5)
        TextBlockProgress.SetText(StringToText("0%"))
        ColorBlockBG.SetDesiredSize(vector2{ X := XSize, Y := YSize})
        ColorBlockFG.SetDesiredSize(vector2{ X := 0.0, Y := YSize})
        ColorBlockBorder.SetDesiredSize(vector2{ X := XSize + (XSize * 0.09), Y := YSize + (YSize * 0.25)})
        ColorBlockBG.SetColor(BackgroundColor)
        ColorBlockFG.SetColor(ForegroundColor)
        ColorBlockBorder.SetColor(BorderColor)
        return OuterOverlay

    SetProgress<public>(InProgress : float) : task(void) =
        NewProgressUpdatePolledEvent.Signal()
        set ProgressPercent = InProgress
        if (ProgressPercent > 100.0) then set ProgressPercent = 100.0
        if (ProgressPercent < 0.000) then set ProgressPercent = 000.0
        spawn{ UpdateBarLengthToProgressSmooth(60) }
```

--------------------------------

### Team Management Device - Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

A Verse device for managing player team assignments using teleporter-based selection and billboard counters for population display. It depends on Fortnite.com/Devices and Verse.org/Simulation. The device subscribes to a teleporter's enter event to assign agents to teams.

```verse
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }

team_management_device := class(creative_device):
    @editable TeamChoiceTeleporter : teleporter_device = teleporter_device{}
    @editable TeamPlayerCounter : team_player_counter_device = team_player_counter_device{}
    @editable var TeamID : int = 1

    OnBegin<override>()<suspends>:void=
        TeamChoiceTeleporter.EnterEvent.Subscribe(ChooseTeam)
        return

    ChooseTeam(AgentIn : agent) : void =
        TeamCollection := GetPlayspace().GetTeamCollection()
        Teams : []team = TeamCollection.GetTeams()
        TeamPlayerCounter.DecrementAgentTeamCount(AgentIn)
        if (TeamCollection.AddToTeam[AgentIn, Teams[TeamID-1]]):
            TeamPlayerCounter.IncrementAgentTeamCount(AgentIn)
```

--------------------------------

### Array Utilities - Collection Manipulation

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Provides essential array operations in Verse. This includes adding elements, iterating with index, selecting random elements, and general collection manipulation patterns.

```Verse
# Adding an item to an array
set SideChestsPositions += array{Position}

# Go over an array with index
for (Index -> Spawner : CreatureSpawners):
    Spawner.Disable()

# Get a random element from an array
Index := GetRandomInt(0, CreatureSpawners.Length)

```

--------------------------------

### Random Teleporter - Randomized Teleportation

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Teleports agents to random locations from a configured array of teleporter devices. It subscribes to the AgentEntersEvent of a mutator zone to trigger teleportation.

```Verse
using { /Fortnite.com/Devices }
using { /Verse.org/Random }
using { /Verse.org/Simulation }

random_teleporter := class(creative_device):
    @editable Teleporters: []teleporter_device = array{}
    @editable EnterRandomTeleporter: mutator_zone_device = mutator_zone_device{}

    OnBegin<override>()<suspends>:void=
        EnterRandomTeleporter.AgentEntersEvent.Subscribe(EnterEvent)

    EnterEvent(Agent:agent):void=
        var RandomTeleporter:int = GetRandomInt(1, 21)
        if(SelectedTeleporter := Teleporters[RandomTeleporter]):
            SelectedTeleporter.Teleport(Agent)

```

--------------------------------

### Verse Player Freeze System

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Implements a system to freeze players using stasis mechanics when they are damaged by specific items. It subscribes to damage events and utilizes a timer and conditional button device for control. The FreezePlayer function puts a target character into stasis for a set duration.

```verse
using { /Fortnite.com/Characters }
using { /Fortnite.com/Devices }
using { /Verse.org/Simulation }

Template := class(creative_device):
    @editable FreezeClass: class_and_team_selector_device = class_and_team_selector_device{}
    @editable FreezeTimer: timer_device = timer_device{}
    @editable FreezeDetector: conditional_button_device = conditional_button_device{}
    @editable FreezeTime : float = 3.0

    OnBegin<override>()<suspends>:void=
        GetPlayspace().PlayerAddedEvent().Subscribe(OnPlayerAdded)
        for (Player : GetPlayspace().GetPlayers(), FortCharacter := Player.GetFortCharacter[]):
            FortCharacter.DamagedEvent().Subscribe(OnPlayerDamaged)

    OnPlayerDamaged(DamageResult : damage_result): void =
        if:
            Instigator := DamageResult.Instigator?
            Agent := Instigator.GetInstigatorAgent[]
            FreezeDetector.IsHoldingItem[Agent]
            Target := fort_character[DamageResult.Target]
        then:
            spawn:
                FreezePlayer(Target)

    FreezePlayer(Target : fort_character)<suspends> : void =
        Target.PutInStasis(stasis_args{})
        Sleep(FreezeTime)
        Target.ReleaseFromStasis()
```

--------------------------------

### Elimination Game Device - Gun Game Mode

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Implements a gun game progression system. Players receive new weapons after each elimination. Requires an array of item granter devices and a win condition based on eliminations.

```Verse
using { /Fortnite.com/Devices }
using { /Fortnite.com/Characters }
using { /Verse.org/Simulation }

elimination_game_device := class(creative_device):
    @editable var WeaponItemGranters : []item_granter_device = array{}
    var NumberOfEliminationsToWin : int = 0
    var AgentMap : [agent]int = map{}

    OnBegin<override>()<suspends>:void=
        set NumberOfEliminationsToWin = WeaponItemGranters.Length
        set WeaponItemGranters = Shuffle(WeaponItemGranters)
        AllPlayers := GetPlayspace().GetPlayers()
        for (EliminationGamePlayer : AllPlayers):
            if (FortCharacter := EliminationGamePlayer.GetFortCharacter[]):
                FortCharacter.EliminatedEvent().Subscribe(OnPlayerEliminated)
            if (set AgentMap[EliminationGamePlayer] = 1) {}
            if (FirstItemGranter:item_granter_device = WeaponItemGranters[0]):
                FirstItemGranter.GrantItem(EliminationGamePlayer)

    GrantNextWeapon(Agent:agent):void=
        if (var CurrentItemNumber:int = AgentMap[Agent]):
            if (IsVictoryConditionMet(CurrentItemNumber) = true):
                EndGame(Agent)
            else:
                set CurrentItemNumber = CurrentItemNumber + 1
                if (ItemGranter := WeaponItemGranters[CurrentItemNumber - 1]):
                    ItemGranter.GrantItem(Agent)
                if (set AgentMap[Agent] = CurrentItemNumber) {}

```

--------------------------------

### Sort Array with Custom Comparer in Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Implements a generic sorting function for arrays in Verse, allowing for custom comparison logic and ascending/descending order. It uses a quicksort-like approach.

```verse
Sort(Items : []t, IsAscending : logic, Comparer: type{_(:t, :t)<computes> : int})<computes> : []t = 
    if (Items.Length > 1, Pivot := Items[Floor(Items.Length/2)]):
        Left := for(Item : Items, Comparer(Item, Pivot) < 0) do Item
        Middle := for(Item : Items, Comparer(Item, Pivot) = 0) do Item
        Right := for(Item : Items, Comparer(Item, Pivot) > 0) do Item
        if(IsAscending?):
            Sort(Left, IsAscending, Comparer) + Middle + Sort(Right, IsAscending, Comparer)
        else:
            Sort(Right, IsAscending, Comparer) + Middle + Sort(Left, IsAscending, Comparer)
    else:
        Items
```

--------------------------------

### Verse Player Damage and Health Management

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Manages player health by applying calculated damage, ensuring a minimum health threshold to prevent unintended eliminations. It uses functions to calculate damage based on current health and desired damage amount. Dependencies include Fortnite character and playspace modules.

```verse
using { /Fortnite.com/Characters }
using { /Fortnite.com/Playspaces }

HurtPlayer(DamageAmount : float):void=
    Playspace: fort_playspace = GetPlayspace()
    AllPlayers: []player = Playspace.GetPlayers()
    if (Player : player = AllPlayers[0]):
        if (FortniteCharacter : fort_character = Player.GetFortCharacter[]):
            MyCharacterHealth : float = FortniteCharacter.GetHealth()
            DamageToDo : float = CalculateDamage(MyCharacterHealth, DamageAmount, 1.0)
            FortniteCharacter.Damage(DamageToDo)

CalculateDamage(PlayerHealth:float, DesiredDamageAmount:float, MinHealth:float):float =
    if (PlayerHealth > DesiredDamageAmount):
        return DesiredDamageAmount
    else if (PlayerHealth > MinHealth):
        return PlayerHealth - MinHealth
    else:
        return PlayerHealth
```

--------------------------------

### Remove Element from Array in Verse

Source: https://context7.com/lilwikipedia/uefn-verse-collection/llms.txt

Demonstrates how to remove an element from an array by its index in Verse. This operation returns a new array without the specified element.

```verse
var MyDeviceArray:[]creative_device = array{}
if (NewArray := MyDeviceArray.RemoveElement[0]):
    set MyDeviceArray = NewArray
```

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