refactor: improve enemy scene loading with error handling

Author: Unix-User

World.gd

@@ -3,11 +3,9 @@ extends Node2D
 @onready var control = $UiLayer/Control
 @onready var game_over_screen = $UiLayer/GameOverScreen
 
-# Comment out or update the preload line
-#preload("res://characters/enemy/Enemy.tscn")
-
-# Instead, you can load the resource dynamically:
-var enemy_scene = load("res://characters/enemy/Enemy.tscn")
+# Store the enemy scene path
+const ENEMY_SCENE_PATH = "res://characters/enemy/Enemy.tscn"
+var enemy_scene = null
 
 var Laser = preload("res://projectiles/PlayerLaser.tscn")
 var score := 0:
@@ -18,15 +16,25 @@ var hi_score
 var scroll_speed = 100
 
 func _ready():
+	# Try to load the enemy scene
+	if ResourceLoader.exists(ENEMY_SCENE_PATH):
+		enemy_scene = load(ENEMY_SCENE_PATH)
+	else:
+		push_error("Failed to load enemy scene from: " + ENEMY_SCENE_PATH)
+		
+	# Load save file
 	var save_file = FileAccess.open("user://save.data", FileAccess.READ)
-	if save_file != null :
+	if save_file != null:
 		hi_score = save_file.get_32()
-	else :
+	else:
 		hi_score = 0
 		save_game()
 	score = 0
+	
+	# Connect player signals
 	var player = $Player
-	player.connect("killed", Callable(self, "_on_player_killed"))
+	if player:
+		player.connect("killed", Callable(self, "_on_player_killed"))
 
 func save_game():
 	var save_file = FileAccess.open("user://save.data", FileAccess.WRITE)