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 = $Cylinder
@onready var particles = $GPUParticles3D
@onready var enemy_particles = $GPUParticlesEnemy
@onready var hit_indicator = $Audio/HitIndicator
@onready var ray: RayCast3D = $RayCast3D


# Called when the node enters the scene tree for the first time.
func _ready():
	
	visible = false
	linear_velocity += transform.basis * Vector3(0, 0, -bullet_speed) + player_velocity


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _physics_process(delta):
	
	angular_velocity = Vector3(0,0,0)
	
	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: Node) -> void:
	
	if !body.is_in_group("player"):
		print("BODY HIT - " + str(body))
				#Break Breakable Objects
		if body.is_in_group("breakable"):
			body.breaking(linear_velocity)
		
		if body.is_in_group("switch"):
			body.hit()
		

		
		mesh.visible = false
		
		if ray.is_colliding() and !ray.get_collider().is_in_group("player"):
			#Bullet Hole Effect
			ray.get_collider().add_child(instance_bullethole)
			instance_bullethole.global_transform.origin = ray.get_collision_point()
			if (abs(ray.get_collision_normal().y) > 0.99):
				instance_bullethole.look_at(ray.get_collision_point() + ray.get_collision_normal(), Vector3(0,0,1))
			else:
				instance_bullethole.look_at(ray.get_collision_point() + ray.get_collision_normal())
			
			#Hit Enemies
			if ray.get_collider().is_in_group("enemy_target"):
				hit_indicator.play()
				enemy_particles.emitting = true
				ray.get_collider().hit(bullet_damage)

			
			#Switch Switches
			
		queue_free()