some glue code between player and weapon

base/scripts/weapons/fire_mode/auto_fire_mode.gd

@@ -18,7 +18,6 @@ func _on_fire_begin(_tree : SceneTree) -> void:
 	cooldown = false
 	check_unfinished_timer(cooldown_timer,on_cooldown_timeout)
 
-
 func _process(tree : SceneTree) -> void:
 	if can_fire() :
 		return

base/scripts/weapons/weapon_base.gd

@@ -2,7 +2,7 @@ extends Node3D
 
 class_name Weapon
 
-@export var barrel: Barrel
+@onready var barrel = $"Barrel"
 @export var uses_hands: Array[CommandQueue.Side]
 
 @export var max_ammo: int = 7
@@ -12,3 +12,22 @@ var ammo: int = max_ammo
 @export var fire_mode: BaseFireMode
 ## Weapon animation library. Should contain "static", "fire", "reload" animations
 @export var animation_library: AnimationLibrary
+
+var is_firing: bool = false
+
+func _ready() -> void:
+	fire_mode.barrel = barrel
+
+## Begin to fire
+func request_fire() -> void:
+	fire_mode.on_fire_begin(get_tree())
+	is_firing = true
+
+func _process(_dt) -> void:
+	if is_firing:
+		fire_mode._process(get_tree())
+
+## End fire
+func end_fire() -> void:
+	fire_mode.on_fire_end(get_tree())
+	is_firing = false