extends RigidBody3D

var bullet_speed
var bullet_drop
var random_spread_amt
var bullet_damage
var instance_bullethole
var bullet_force_mod = 1.0
var distance_from_player
var player_position
var player_velocity

@onready var mesh = $gunbullet1
@onready var ray = $RayCast3D
@onready var particles = $GPUParticles3D
@onready var enemy_particles = $GPUParticlesEnemy
@onready var timer = $Timer
@onready var gunbullet1 = $gunbullet1/Cylinder
@onready var hit_indicator = $Audio/HitIndicator



var rng = RandomNumberGenerator.new()
var av_x
var av_y
var av_z

# Called when the node enters the scene tree for the first time.
func _ready():
	
	#apply random rotation
	av_x = deg_to_rad(rng.randf_range(-random_spread_amt,random_spread_amt))
	av_y = deg_to_rad(rng.randf_range(-random_spread_amt,random_spread_amt))
	av_z = deg_to_rad(rng.randf_range(-random_spread_amt,random_spread_amt))
	#angular_velocity += Vector3(av_x,av_y,av_z)
	linear_velocity += transform.basis * Vector3(0, 0, -bullet_speed)
	timer.start()
	visible = false

func MoveAndCollide():
	pass

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	distance_from_player = abs(self.global_position - player_position)
	
	if distance_from_player.x > 2 or  distance_from_player.y > 2 or distance_from_player.z > 2:
		visible = true
	


func _on_body_entered(body):
	
	if !body.is_in_group("player"):
		mesh.visible = false
		ray.enabled = false
	
	#bullethole effect
	body.add_child(instance_bullethole)
	instance_bullethole.global_transform.origin = body.get_collision_point()
	instance_bullethole.look_at(body.get_collision_point() + body.get_collision_normal(), Vector3.UP)
	
	##move rigidbodies
	#if ray.get_collider().is_in_group("scene_rigidbody"):
		#ray.get_collider().linear_velocity += transform.basis * Vector3(0,0,-1 * bullet_force_mod)
	
	if body.is_in_group("breakable"):
		var current_velocity = transform.basis * Vector3(0,0,-1 * bullet_force_mod)
		body.breaking(current_velocity)

	
	if body.is_in_group("enemy"):
		hit_indicator.play()
		enemy_particles.emitting = true
		body.hit(bullet_damage)
	await get_tree().create_timer(1.0).timeout
	queue_free()