# base NPCEnemy class
class_name NPCEnemy
extends NPC


var target
@export var attack_base := 1
var attack_damage := 0
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 faction
    self.faction = Globals.World.Faction.CREATURE
    
    # randomness
    # TODO: needs to be random from distribution
    # var rand_difficulty = NPC.NPCDifficulty.values().pick_random()

    # set health
    _random_mod_health()

    # set health bar
    %Healthbar.max_value = maxHealth
    %Healthbar.value = maxHealth
    
    # set damage
    attack_damage = attack_base 
    

func _process(_delta: float) -> void:
    %Healthbar.value = maxHealth - damageTaken
    if damageTaken >= maxHealth:
        # save vars to emit
        var enemyDifficulty = self.npcDifficulty
        var enemyFaction = self.faction
        var enemyTier = self.npcTier
        # delete node
        # TODO: add fade out for enemy death, Global func doens't work due to
        # the node getting freed, await didn't help. reimpliment here in enemy.
        self.remove_from_group("enemies")
        self.queue_free()
        # send signal that I died to be counted, etc.
        SignalBus.enemy_died.emit(enemyDifficulty, enemyTier, enemyFaction)


func _physics_process(_delta):
    velocity = position.direction_to(target) * speed
    # look_at(target)
    # BUG: 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()


func _deal_damage() -> void:
    SignalBus.enemy_damaged_player.emit(attack_damage)

func _on_attack_timer_timeout() -> void:
    _deal_damage()