Using Enums with Godot

player.gd

extends CharacterBody2D

class_name Player

@export var weapon:PackedScene
const BULLET_SPEED = 400

@export var fire_type := FireType.SINGLE

enum FireType {
	SINGLE,
	DOUBLE,
}

func _input(event: InputEvent) -> void:
	if event.is_action_pressed("ui_accept"):
		if fire_type == FireType.SINGLE:
			fire_bullet()
		elif fire_type == FireType.DOUBLE:
			fire_bullet(Vector2(20, 0))
			fire_bullet(Vector2(-20, 0))
		else:
			print_debug("player fire_type not recognized: %s" % fire_type)

func fire_bullet(offset:Vector2 = Vector2.ZERO) -> void:
	var bullet = weapon.instantiate()
	bullet.global_position = global_position + offset
	get_tree().get_root().add_child(bullet)
	bullet.linear_velocity = Vector2.UP.rotated(rotation) * BULLET_SPEED