diff --git a/game/area_map/area_map.gd b/game/area_map/area_map.gd
index 5445a01..d3b9887 100644
--- a/game/area_map/area_map.gd
+++ b/game/area_map/area_map.gd
@@ -84,15 +84,20 @@ func _ready() -> void:
 
 func _input(event: InputEvent) -> void:
 	if selected_sector == null: return
+	if not visible: return
 	
 	if event.is_action_pressed("ui_left") and selected_sector.sector_to_left:
 		_set_selected_sector(selected_sector.sector_to_left)
+	
 	if event.is_action_pressed("ui_right") and selected_sector.sector_to_right:
 		_set_selected_sector(selected_sector.sector_to_right)
+	
 	if event.is_action_pressed("ui_up") and selected_sector.sector_above:
 		_set_selected_sector(selected_sector.sector_above)
+	
 	if event.is_action_pressed("ui_down") and selected_sector.sector_below:
 		_set_selected_sector(selected_sector.sector_below)
+	
 	if event.is_action_pressed("ui_accept"):
 		var selected_passage := _get_passage_to_sector(selected_sector)
 		if selected_passage != null:
diff --git a/game/entities/ships/abstract_ship.gd b/game/entities/ships/abstract_ship.gd
index 8aca41c..2f5961b 100644
--- a/game/entities/ships/abstract_ship.gd
+++ b/game/entities/ships/abstract_ship.gd
@@ -45,15 +45,13 @@ var _weapons : Array[AbstractWeapon]
 
 
 func _ready() -> void:
-	shield_sprite.visible = health.shield != 0
-	armor_sprite.visible = health.armor != 0
-	
 	for slot in $WeaponSlots.get_children():
 		if slot is Node2D:
 			weapon_positions.append(slot.global_position - global_position)
 	
-	armor_sprite.material.set(SHADER_INTENSITY, health.armor/float(health.max_armor))
-	shield_sprite.material.set(SHADER_INTENSITY, health.shield/float(health.max_shield))
+	_on_shield_updated(health.shield, health.max_shield)
+	_on_armor_updated(health.armor, health.max_armor)
+	_on_hull_updated(health.hull, health.max_hull)
 
 
 func _physics_process(_delta: float) -> void:
@@ -114,12 +112,14 @@ func _add_weapon(weapon: AbstractWeapon, weapon_position: Vector2) -> void:
 
 func _on_shield_updated(value: int, max_value: int) -> void:
 	shield_sprite.visible = value != 0
-	shield_sprite.material.set(SHADER_INTENSITY, value/float(max_value))
+	var intensity := value/float(max_value) if value != 0 else 0.0
+	shield_sprite.material.set(SHADER_INTENSITY, intensity)
 
 
 func _on_armor_updated(value: int, max_value: int) -> void:
 	armor_sprite.visible = value != 0
-	armor_sprite.material.set(SHADER_INTENSITY, value/float(max_value))
+	var intensity := value/float(max_value) if value != 0 else 0.0
+	armor_sprite.material.set(SHADER_INTENSITY, intensity)
 
 
 func _on_hull_updated(_value: int, _max_value: int) -> void:
diff --git a/game/entities/ships/abstract_ship.tscn b/game/entities/ships/abstract_ship.tscn
index f551641..834dc75 100644
--- a/game/entities/ships/abstract_ship.tscn
+++ b/game/entities/ships/abstract_ship.tscn
@@ -6,12 +6,14 @@
 [ext_resource type="PackedScene" uid="uid://d2snum2pxc2ui" path="res://game/health_system/health_bar/heath_bar.tscn" id="3_l62e5"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_dokxo"]
+resource_local_to_scene = true
 shader = ExtResource("2_dokxo")
 shader_parameter/speed = 0.0
 shader_parameter/scale = 20.0
 shader_parameter/intensity = 1.0
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_bkxo4"]
+resource_local_to_scene = true
 shader = ExtResource("2_dokxo")
 shader_parameter/speed = 5.0
 shader_parameter/scale = 20.0