extends CharacterBody3D

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

const SPEED = 3.0
const MAX_LV = 10
const MAX_AV = 10

@export var player_path : NodePath

@onready var nav_agent = $NavigationAgent3D
@onready var target = $body/target
@onready var movement_shape = $MovementShape

var stamina = load("res://assets/stamina_pickup.tscn")
var ammo = load("res://assets/ammo_pickup.tscn")
var jump = load("res://assets/jump_pickup.tscn")
var die_particles = load("res://assets/die_particles.tscn")
var particlespawn
var rng = RandomNumberGenerator.new()
var rand_select
var rand_item

func _ready():
	player = get_node(player_path)
	
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 = (next_nav_point - global_transform.origin).normalized() * SPEED
	
	
	look_at(Vector3(player.global_position.x, global_position.y, player.global_position.z), Vector3.UP)
	
	move_and_slide()


func _on_area_3d_body_part_hit(dam):
	health -= dam
	print("health: " + str(health))
	if health <= 0:
		
		particlespawn = die_particles.instantiate()
		particlespawn.position = self.global_position
		particlespawn.transform.basis = self.global_transform.basis
		get_parent().add_child(particlespawn)
		
		#pickup drop
		while number_of_drops > 0:
			var rand_selector = int(round(rng.randf_range(1,2)))
			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 = jump
			# 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_parent().add_child(rand_item)
			number_of_drops -= 1
		
		queue_free()