extends RigidBody3D

@export var hp : float = 3
@export var explosion : Resource
@export var blast_power : float = 10
@export_enum("Enemy", "Trap") var enemy_type: int

@onready var leak_audio: AudioStreamPlayer3D = $leak_audio
@onready var blast_radius_area: Area3D = $BlastRadius
@onready var radius_shape: CollisionShape3D = $BlastRadius/CollisionShape3D
@onready var audio_drop: AudioStreamPlayer3D = $audio_drop
@onready var flames: GPUParticles3D = $Flames

var leak_hp = false
var blast_amount

const HP_LEAK_RATE = .5

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	add_to_group("persist")


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	if leak_hp:
		hp -= delta * HP_LEAK_RATE
		flames.emitting = true
	if hp <= 0:
		explode()

func save():
	var save_dict = {
		"filename" : get_scene_file_path(),
		"parent" : get_parent().get_path(),
		"pos_x" : position.x,
		"pos_y" : position.y,
		"pos_z" : position.z,
		"rot_x" : rotation.x,
		"rot_y" : rotation.y,
		"rot_z" : rotation.z,
		"hp" : hp,
		"leak_hp" : leak_hp,
	}
	return save_dict

func hit(bullet_damage):
	hp -= 1
	leak_hp = true
	leak_audio.play()

func explode():
	#get all collision objects that can be moved
	var bodies_in_blast = blast_radius_area.get_overlapping_bodies()
	#for each object determine vector from center of blast radius
		#apply linear velocity power as the inverse % of distance towards the edge (bonus points if using curve texture)
		#break breakable objects
	for body in bodies_in_blast:
		
		#calculate blast power and direction
		var blast_direction = (body.global_position - blast_radius_area.global_position).normalized()
		var blast_amount = 1 - ((body.global_position - blast_radius_area.global_position).length() / radius_shape.shape.radius)
		var blast_velocity = blast_direction * blast_power * blast_amount
		
		#apply and/or damage
		if body.get_class() == "RigidBody3D":
			if body.is_in_group("breakable"):
				body.breaking(blast_velocity)
			else:
				body.linear_velocity += blast_velocity
		if body.is_in_group("player"):
			body.velocity += clamp(blast_velocity,Vector3(-7,-7,-7),Vector3(7,7,7))
			body.recoil.add_recoil(Vector3(1,.1,.1),10,10)
			body.hit(1,self,enemy_type)
		if body.has_method("hit") and !body.is_in_group("player"):
			body.hit(1)
		if body.is_in_group("enemy"):
			body.knocked = true
			body.stunned = true
			print("knocked")
			body.knocked_timer.start()
			body.stunned_timer.start()
			body.velocity += blast_velocity
	
	#Spawn gpu particles
	var explosionspawn = explosion.instantiate()
	explosionspawn.position = self.global_position
	explosionspawn.transform.basis = self.global_transform.basis
	get_tree().get_root().add_child(explosionspawn)
	queue_free()

func _on_body_shape_entered(body: Node) -> void:
	audio_drop.play()
	print("BODY")
	if body.get_collision_layer() == 1:
		audio_drop.play()