# This is our main script file.
# It tells the NPC how to behave.

using { /Fortnite.com/AI }
using { /Fortnite.com/Characters }
using { /Fortnite.com/Game }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /Verse.org/Simulation }

# We create a new type of NPC behavior.
# This is like a blueprint for our medic.
medic_behavior := class(npc_behavior):

    # This function runs when the game starts.
    OnBegin<override>()<suspends>: void =
        # We start a loop that never ends.
        # The NPC will keep thinking forever.
        loop:
            # Step 1: Find all players in the game.
            # GetPlayspace gives us the current match session.
            # GetPlayers() returns every player currently in the game.
            AllPlayers := GetPlayspace().GetPlayers()

            # Step 2: Filter only the hurt players.
            # We check their health. If it is low, we keep them.
            var HurtCharacters : []fort_character = array{}
            for (Player : AllPlayers):
                # Cast the player to a fort_character so we can read health.
                if (Character := Player.GetFortCharacter[]):
                    # IsPlayerHurt checks whether this character needs healing.
                    if (IsPlayerHurt[Character]):
                        set HurtCharacters += array{Character}

            # Step 3: Find the closest hurt player.
            # We pick the first one we find for now.
            if (HurtCharacters.Length > 0):
                if (Target := HurtCharacters[0]):
                    # Step 4: Heal the target!
                    # We use our helper function to add health.
                    # This makes them feel better.
                    HealCharacter(Target, 50.0)

            # Step 5: Wait a little bit.
            # We don't want to heal too fast.
            # It would be annoying!
            Sleep(2.0)

# This helper function checks if a player is hurt.
# fort_character exposes GetHealth() directly.
IsPlayerHurt(Character : fort_character)<decides><transacts>: void =
    # GetHealth() returns the current health as a float.
    # If health is less than 100, they are hurt.
    Character.GetHealth() < 100.0

# This helper function heals a character.
HealCharacter(Target : fort_character, Amount : float): void =
    # GetHealth() reads current health.
    # SetHealth() writes the new value.
    # Old health + Amount = New health.
    NewHealth : float = Target.GetHealth() + Amount
    Target.SetHealth(NewHealth)