Slight shuffling of scene files, resources; export presets for macOS

built added.

scenes/main.gd

@@ -1,11 +1,16 @@
 extends Node2D
 
-
 var enemy = preload("res://scenes/enemy.tscn")
 var score = 0
+var playing = false
+
+@onready var start_button = $CanvasLayer/CenterContainer/Start
+@onready var game_over = $CanvasLayer/CenterContainer/GameOver
 
 func _ready():
-    spawn_enemies()
+      start_button.show()
+      game_over.hide()
+  #	  spawn_enemies()
 
 func spawn_enemies():
     for x in range(9):
@@ -19,3 +24,22 @@ func spawn_enemies():
 func _on_enemy_died(value):
     score += value
     $CanvasLayer/UI.update_score(score)
+
+
+func _on_player_died():
+    get_tree().call_group("enemies", "queue_free")
+    game_over.show()
+    await get_tree().create_timer(2).timeout
+    game_over.hide()
+    start_button.show()
+
+func new_game():
+    score = 0
+    $CanvasLayer/UI.update_score(score)
+    $Player.start()
+    spawn_enemies()
+    playing = true
+
+func _on_start_pressed():
+    start_button.hide()
+    new_game()