For our regular monthly tutorial nights, we're basing our teaching on the wonderful series by AJ's Learning Lab, Godot FPS Tutorial - Learn Godot by making Wolfenstein 3D.

He has made the assets he uses freely available (please consider donating) here: https://ajslearninglab.itch.io/boganstein-3d-learn-godot-4-with-wolfenstein-3d/

All the code we use is available on AJ's Learning Lab github - https://github.com/AJsLearningLab/GodotFPS

hud.gd

extends CanvasLayer
 
var ammo = 0
var current_weapon = "knife"
 
func _ready():
	$AnimatedSprite2D.animation_finished.connect(_on_AnimatedSprite2D_animation_finished)
 
func _process(delta):
	if Input.is_action_just_pressed("ui_select"):
		if current_weapon == "knife":
			$AnimatedSprite2D.play("stab")
		elif current_weapon == "gun":
			if ammo > 0:
				$AnimatedSprite2D.play("shoot")
				ammo -= 1
 
func _on_AnimatedSprite2D_animation_finished():
	if current_weapon == "knife":
		$AnimatedSprite2D.play("knife_idle")
	elif current_weapon == "gun":
		$AnimatedSprite2D.play("gun_idle")