extends Node3D
					#Hand		Camera			Head		Player
@onready var main =   get_tree().root.get_node("Main")
@onready var hud =   		main.get_node("HUD")
@onready var score_rank =   hud.get_node("ScoreRank")
@onready var player = get_parent().get_parent().get_parent().get_parent()
@onready var camera = get_parent().get_parent()
@onready var ejector = find_node("Ejector")
@onready var muzzle = find_node("Muzzle")

var casing = preload("res://Assets/Weapons/Handgun/Casing.tscn")
var flash = preload("res://Assets/Effects/MuzzleFlash.tscn")
var impact_wall = preload("res://Assets/Effects/ImpactSparks.tscn")
var impact_player = preload("res://Assets/Effects/ImpactBlood.tscn")

# Declare member variables here. Examples:
# var a = 2
# var b = "text"

#enum Trigger {TRIGGER_PRIMARY, TRIGGER_SECONDARY}

@rpc(sync) func shoot():
	#print("SHOOT from PID ", get_tree().multiplayer.get_network_unique_id(), " controlled by ", player.get_network_authority())
	var space_state = get_world_3d().direct_space_state
	
	var from = camera.get_global_transform().origin
	var aim = - camera.get_global_transform().basis[2]
	var to = from + (aim * 1000)
	
	var ray = space_state.intersect_ray(from, to, [player])
	
	var impact_vfx
	
	if ray: # did we hit anything?
		if ray['collider'].has_method(&'damage'):
			if get_tree().multiplayer.get_network_unique_id() == 1: # make sure this can only run on the server
				print("SHOT HIT ", ray['collider'])
				ray['collider'].damage(20) # apply damage
				if main.player_list.get(ray['collider'].get_network_authority()).health <= 0: # if he ded
					ray['collider'].die(self.get_network_authority())
					
					main.player_list.players[player.get_network_authority()].score += 1 # give the killer a point
					main.rpc(&'player_list_update', main.player_list.get(player.get_network_authority()).serialize(), player.get_network_authority())
					hud.get_node("Crosshair").kill()
					# update local HUD
				else:
					hud.get_node("Crosshair").hit()
				
				# boardcast the new health value to all peers
				main.rpc(&'player_list_update', main.player_list.get(ray['collider'].get_network_authority()).serialize(), ray['collider'].get_network_authority())
				main.update_hud()
			
			impact_vfx = impact_player.instantiate()
		else:
			impact_vfx = impact_wall.instantiate()
		
		if impact_vfx:
			impact_vfx.global_transform = impact_vfx.global_transform.looking_at(ray['normal'])
			impact_vfx.global_transform.origin = ray['position']
			get_tree().root.add_child(impact_vfx)
	
	#print(ray)

@rpc(sync, auth) func trigger(index: int, active: bool) -> void:
	#print("Weapon " + str(name) + ", Trigger " + str(index) + ", active: " + str(active))
	
	if index == 0 and active and $Handgun/AnimationPlayer.is_playing() == false:
		
		rpc(&'shoot')
		
		$Handgun/AnimationPlayer.play("Shoot", 0, 2.5)
		
		var flash_effect
		if flash.has_method(&"instance"):
			flash_effect = flash.instance()
		else:
			flash_effect = flash.instantiate()
			
		get_parent().add_child(flash_effect)
		flash_effect.global_transform = muzzle.global_transform
		
		var casing_instance
		if casing.has_method(&"instance"):
			casing_instance = casing.instance()
		else:
			casing_instance = casing.instantiate()
		
		get_tree().root.add_child(casing_instance)

		casing_instance.global_transform = ejector.global_transform.translated(player.linear_velocity / 30) #approximating delta
		#casing_instance.rotate_object_local(Vector3.FORWARD, deg2rad(90))
		#casing_instance.angular_velocity = - ejector.global_transform.basis[2] * randf_range(13, 17)
		
		# TODO correct the ejection angle - right now it shoots straight up relative to the gun
		casing_instance.linear_velocity = ejector.global_transform.basis[0] * randf_range(6.2, 8.5)# - ejector.global_transform.basis[2] * randf_range(-1.2, -1.7) + player.linear_velocity

		
# Called when the node enters the scene tree for the first time.
func _ready():
	pass