# base NPCEnemy class
class_name NPCEnemy
extends NPC


@export var killType: WorldArea.Faction = WorldArea.Faction.CREATURE

var target
var speed := 200
var prevCollisions := 0


func _init() -> void:
    # TODO: randomize within area restrictions? or put this in area?
    self.npcDifficulty = NPCDifficulty.NORMAL
    self.npcTier = NPCTier.I
 

func _ready() -> void:
    # add to enemies
    add_to_group("enemies")

    # set health
    _random_mod_health()

    # set health bar
    %Healthbar.max_value = maxHealth
    %Healthbar.value = maxHealth
    

func _process(_delta: float) -> void:
    %Healthbar.value = maxHealth - damageTaken
    if damageTaken >= maxHealth:
        # save vars to emit
        var enemyDifficulty = self.npcDifficulty
        var enemyKillType = self.killType
        # delete node
        self.remove_from_group("enemies")
        self.queue_free()
        # send signal that I died to be counted, etc.
        SignalBus.enemy_died.emit(enemyDifficulty, enemyKillType)


func _physics_process(_delta):
    velocity = position.direction_to(target) * speed
    # look_at(target)
    # FIXME: want enemy to stop when touching something, to prevent vibrating
    if position.distance_to(target) > 10 and get_slide_collision_count() == prevCollisions:
        move_and_slide()
    prevCollisions = get_slide_collision_count()