Added shield damage taken indicator to colliding with enemies; added

shaders to experiment with (disabled)

player.gd

@@ -19,7 +19,8 @@ func _ready():
     start()
 
 func start():
-    show()
+    set_process(true)
+    $Ship.show()
     shield = max_shield
     position = Vector2(screensize.x / 2, screensize.y - 64)
     $GunCooldown.wait_time = cooldown
@@ -28,7 +29,11 @@ func set_shield(value):
     shield = min(max_shield, value)
     shield_changed.emit(max_shield, shield)
     if shield <= 0:
-        hide()
+        set_process(false)
+        $Ship.hide()
+        $Explosion.show()
+        $Explosion/AnimationPlayer.play("explosion-one-shot")
+        await $Explosion/AnimationPlayer.animation_finished
         died.emit()
 
 func shoot():
@@ -66,6 +71,7 @@ func _on_area_entered(area):
     if area.is_in_group("enemies"):
         area.explode()
         shield -= max_shield / 2
+        damage_taken.emit()
     if area.is_in_group("enemy_bullets"):
         damage_taken.emit()