Started a Godot Project to remake Tailgunner.

scripts/weapon.gd

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+class_name Weapon
+extends Node2D
+
+# constants
+@export var max_ammo = 1
+## Number of seconds until the weapon can be used again.
+@export var cooldown = 1
+@export var shot: Projectile
+@export var shot_spawn: Node2D
+@export var audio: AudioStreamRandomizer
+
+# gameplay variables
+var ammo
+var timer = 0.0
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	ammo = max_ammo
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	timer += delta
+
+# Creates and returns an instance of the weapon's projectile.
+func shoot() -> Projectile:
+	if timer > cooldown && ammo > 0:
+		timer = 0
+		var new_shot = shot.instantiate()
+		owner.add_child(new_shot)
+		new_shot.transform = shot_spawn.transform
+		ammo -= 1
+		audio.play()
+		return new_shot
+	else:
+		return null
+
+func add_ammo(amount):
+	ammo += amount
+	if ammo > max_ammo:
+		ammo = max_ammo