Fix

.godot/editor/editor_layout.cfg

@@ -32,7 +32,7 @@ current_scene="res://scenes/mainmenu.tscn"
 center_split_offset=-288
 selected_default_debugger_tab_idx=0
 selected_main_editor_idx=2
-selected_bottom_panel_item=0
+selected_bottom_panel_item=1
 
 [ScriptEditor]
 

.godot/editor/filesystem_update4

@@ -1 +1,2 @@
 res://scenes/mainmenu.tscn
+res://scripts/mainmenu.gd

.godot/editor/script_editor_cache.cfg

@@ -109,11 +109,11 @@ state={
 state={
 "bookmarks": PackedInt32Array(),
 "breakpoints": PackedInt32Array(),
-"column": 30,
+"column": 0,
 "folded_lines": Array[int]([]),
 "h_scroll_position": 0,
-"row": 46,
-"scroll_position": 18.0,
+"row": 25,
+"scroll_position": 5.0,
 "selection": false,
 "syntax_highlighter": "GDScript"
 }

scripts/mainmenu.gd

@@ -20,7 +20,7 @@ func animate_sliding(direction: String):
 	if direction == "right":
 		_start_animation_right()
 
-var worlds = [world_1, world_2, world_3, world_4]
+@onready var worlds = [world_1, world_2, world_3, world_4]
 var world_indices = {world_1: 1, world_2: 2, world_3: 3, world_4: 4}
 var animation_in_progress = false
 
@@ -33,16 +33,16 @@ func _start_animation_right():
 				world_indices[world] += 1
 	for world in worlds:
 			if world_indices[world] == 1:
-				world.set_position(Vector2(-185, 0))
+				world.rect_position = Vector2(-185, 0)
 				world.show()
 			elif world_indices[world] == 2:
-				world.set_position(Vector2(0, 0))
+				world.rect_position = Vector2(0, 0)
 				world.show()
 			elif world_indices[world] == 3:
-				world.set_position(Vector2(185, 0))
+				world.rect_position = Vector2(185, 0)
 				world.show()
 			elif world_indices[world] == 4:
-				world.set_position(Vector2(185, 0))
+				world.rect_position = Vector2(185, 0)
 				world.hide()
 	animation_in_progress = false