Trying new stuff with the camera and grid. I want to be able to move a unit but there is a problem with the grid at the moment. I am now trying to implement a new way of handling the camera, maybe then I can move on to moving units...

Scenes/Camera/camera_controller.gd

@@ -1,5 +1,10 @@
 extends Node2D
 
+# To change the zoom
+@export var grid: Resource
+
+@export var CameraSpeedMult = 2
+
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
 	pass # Replace with function body.
@@ -8,15 +13,24 @@ func _ready() -> void:
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
 	if Input.is_action_pressed("MoveUp"):
-		global_position += Vector2.UP * 2
+		_moveCamera(Vector2.UP)
 	if Input.is_action_pressed("MoveDown"):
-		global_position += Vector2.DOWN * 2
+		_moveCamera(Vector2.DOWN)
 	if Input.is_action_pressed("MoveLeft"):
-		global_position += Vector2.LEFT * 2
+		_moveCamera(Vector2.LEFT)
 	if Input.is_action_pressed("MoveRight"):
-		global_position += Vector2.RIGHT * 2
+		_moveCamera(Vector2.RIGHT)
 		
 	if Input.is_action_just_released("ZoomIn"):
-		$SmartCamera2D.zoom += Vector2.ONE
+		_zoomCamera(Vector2.ONE)
 	if Input.is_action_just_released("ZoomOut"):
-		$SmartCamera2D.zoom -= Vector2.ONE
+		_zoomCamera(-Vector2.ONE)
+		
+func _moveCamera(direction: Vector2):
+	position += direction * CameraSpeedMult
+	grid.setCameraPosition($SmartCamera2D.position)
+	grid.setScreenCenter($SmartCamera2D.get_screen_center_position())
+	
+func _zoomCamera(direction: Vector2):
+	$SmartCamera2D.zoom += direction
+	grid.setCameraZoom($SmartCamera2D.zoom)

Scenes/Camera/camera_controller.tscn

@@ -9,6 +9,11 @@ script = ExtResource("1_ig7ij")
 metadata/_edit_group_ = true
 
 [node name="SmartCamera2D" type="Camera2D" parent="."]
+limit_left = 0
+limit_top = 0
+limit_right = 800
+limit_bottom = 480
+limit_smoothed = true
 position_smoothing_enabled = true
 script = ExtResource("2_du7i2")
 target = NodePath("..")