class_name NPCEnemy
extends NPC


enum questTypes {NONE, FEW_KILL, MANY_KILL, ONE_KILL}

signal enemy_died(npcDifficulty: npcDifficulties, questType: questTypes)

@export var questType: questTypes = questTypes.NONE

var target
var speed := 300
var prevCollisions := 0


func _init() -> void:
    self.npcDifficulty = npcDifficulties.NORMAL
    self.npcTier = npcTiers.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:
        # send signal that I died to be counted, etc.
        enemy_died.emit(self.npcDifficulty, self.questType)
        # delete node
        self.queue_free()

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()