extends CharacterBody3D

var player = null
@export var health = 3
@export var number_of_drops = 3

@export var SPEED = 3.0
const MAX_LV = 10
const MAX_AV = 10

@export var player_path : NodePath
@export var bullet : Resource
@export var casing : Resource
@export var bullet_speed = 150
@export var bullet_drop = .1
@export var random_spread_amt = .01
@export var bullet_damage = 1
@export var turret_look_speed = 6

@onready var nav_agent = $NavigationAgent3D
@onready var target = $body/target
@onready var movement_shape = $MovementShape
@onready var barrel_1 = $TurretLook/Turret/Barrel1
@onready var barrel_2 = $TurretLook/Turret/Barrel2
@onready var casing_ejector = $TurretLook/Turret/CasingEjector
@onready var prefire_timer = $Timers/prefire_timer
@onready var postfire_timer = $Timers/postfire_timer
@onready var retarget_timer = $Timers/retarget_timer
@onready var turret_look_next = $TurretLookNext
@onready var spider_look_next = $SpiderLookNext
@onready var body = $body
@onready var audio_fire = $AUIDO/Fire


@onready var turret = $TurretLook/Turret
@onready var turret_material = turret.mesh.surface_get_material(2)

@export var stamina : Resource
@export var ammo : Resource
@export var money : Resource
@export var die_particles : Resource
@onready var turret_look = $TurretLook

var particlespawn
var rng = RandomNumberGenerator.new()
var rand_select
var rand_item
var body_look_to
var distance_to_player
var hive_velocity
var hive_nav_point

func _ready():
	player = get_node(player_path)
	turret_material.emission_enabled = false
	
	#randomly start the postfire timer so enemy turrets aren't synced
	var random_time = rng.randf_range(0,5)
	await get_tree().create_timer(random_time).timeout
	postfire_timer.start()
	
func _process(delta):
	velocity = Vector3.ZERO
	
	# Navigation
	#nav_agent.set_target_position(player.global_transform.origin)
	#var next_nav_point = nav_agent.get_next_path_position()
	velocity = hive_velocity
	
	#FIX BODY ROTATION
	spider_look_next.look_at(Vector3(player.global_position.x, 0, player.global_position.z), Vector3.UP)
	body.rotation.y = lerp(body.rotation.y, spider_look_next.rotation.y, delta * 1)
	
	turret_look_next.look_at(player.global_position,Vector3.UP)
	turret_look.rotation = lerp(turret_look.rotation,turret_look_next.rotation,delta * turret_look_speed)
	
	distance_to_player = abs(self.global_position - player.global_position)
	
	
	if distance_to_player.x > 4 or distance_to_player.z > 4:
		move_and_slide()


func _on_area_3d_body_part_hit(dam,bullet_damage):
	health -= dam * bullet_damage
	print("health: " + str(health))
	if health <= 0:
		#remove from parent array
		get_parent().minions.erase(self)
		
		particlespawn = die_particles.instantiate()
		particlespawn.position = self.global_position
		particlespawn.transform.basis = self.global_transform.basis
		get_tree().get_root().add_child(particlespawn)
		
		#pickup drop
		while number_of_drops > 0:
			var rand_selector = int(round(rng.randf_range(1,3)))
			var lv_x = rng.randf_range(-MAX_LV,MAX_LV)
			var lv_y = rng.randf_range(0,MAX_LV)
			var lv_z = rng.randf_range(-MAX_LV,MAX_LV)
			var av_x = rng.randf_range(-MAX_AV,MAX_AV)
			var av_y = rng.randf_range(-MAX_AV,MAX_AV)
			var av_z = rng.randf_range(-MAX_AV,MAX_AV)
			
			match rand_selector:
				1:
					rand_select = stamina
				2:
					rand_select = ammo
				3:
					rand_select = money
			# Random Item Drop
			rand_item = rand_select.instantiate()
			rand_item.position = self.global_position
			rand_item.transform.basis = self.global_transform.basis
			rand_item.linear_velocity += self.global_transform.basis * Vector3(lv_x,lv_y,lv_z)
			rand_item.angular_velocity += self.global_transform.basis * Vector3(av_x,av_y,av_z)
			get_tree().get_root().add_child(rand_item)
			number_of_drops -= 1
		
		queue_free()


func _on_prefire_timer_timeout():
	#barrel 1 fire
	var instance_bullet = bullet.instantiate()
	instance_bullet.position = barrel_1.global_position
	instance_bullet.transform.basis = barrel_1.global_transform.basis	
	instance_bullet.bullet_speed = bullet_speed
	instance_bullet.bullet_drop = bullet_drop
	instance_bullet.random_spread_amt = random_spread_amt
	instance_bullet.bullet_damage = bullet_damage
	get_tree().get_root().add_child(instance_bullet)
	
	#barrel 2 fire
	var instance_bullet2 = bullet.instantiate()
	instance_bullet2.position = barrel_2.global_position
	instance_bullet2.transform.basis = barrel_2.global_transform.basis
	instance_bullet2.bullet_speed = bullet_speed
	instance_bullet2.bullet_drop = bullet_drop
	instance_bullet2.random_spread_amt = random_spread_amt
	instance_bullet2.bullet_damage = bullet_damage
	get_tree().get_root().add_child(instance_bullet2)
	turret_material.emission_enabled = false
	
	var instance_casing = casing.instantiate()
	instance_casing.position = casing_ejector.global_position
	instance_casing.transform.basis = casing_ejector.global_transform.basis
	var instance_casing2 = casing.instantiate()
	instance_casing2.position = casing_ejector.global_position
	instance_casing2.transform.basis = casing_ejector.global_transform.basis
	get_tree().get_root().add_child(instance_casing)
	get_tree().get_root().add_child(instance_casing2)
	
	audio_fire.play()
	
	prefire_timer.stop()
	postfire_timer.start()


func _on_postfire_timer_timeout():
	prefire_timer.start()
	turret_material.emission_enabled = true