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/Main/cursor.gd

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+## Player-controlled cursor. Allows them to navigate the game grid, select units, and move them.
+## Supports both keyboard and mouse (or touch) input.
+@tool
+class_name Cursor
+extends Node2D
+
+## Emitted when clicking on the currently hovered cell or when pressing "ui_accept".
+signal accept_pressed(cell)
+## Emitted when the cursor moved to a new cell.
+signal moved(new_cell)
+
+## Grid resource, giving the node access to the grid size, and more.
+@export var grid: Resource
+## Time before the cursor can move again in seconds.
+@export var ui_cooldown := 0.1
+
+## Coordinates of the current cell the cursor is hovering.
+var cell := Vector2.ZERO:
+	set(value):
+		print("Setting cell to: ", value)
+		# We first clamp the cell coordinates and ensure that we aren't
+		#	trying to move outside the grid boundaries
+		var new_cell: Vector2 = grid.clamp(value)
+		print("New cell: ", new_cell)
+		if new_cell.is_equal_approx(cell):
+			return
+		
+		cell = new_cell
+		print("Cell is ", cell)
+		# If we move to a new cell, we update the cursor's position, emit
+		#	a signal, and start the cooldown timer that will limit the rate
+		#	at which the cursor moves when we keep the direction key held
+		#	down
+		position = grid.calculateMapPosition(cell)
+		print("Position is ", position)
+		emit_signal("moved", cell)
+		_timer.start()
+
+@onready var _timer: Timer = $Timer
+
+
+func _ready() -> void:
+	_timer.wait_time = ui_cooldown
+	position = grid.calculateMapPosition(cell)
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	# Navigating cells with the mouse.
+	if event is InputEventMouseMotion:
+		cell = grid.calculateGridCoordinates(event.position)
+	# Trying to select something in a cell.
+	elif event.is_action_pressed("Select") or event.is_action_pressed("ui_accept"):
+		emit_signal("accept_pressed", cell)
+		get_viewport().set_input_as_handled()
+
+	var should_move := event.is_pressed() 
+	if event.is_echo():
+		should_move = should_move and _timer.is_stopped()
+
+	if not should_move:
+		return
+
+	# Moves the cursor by one grid cell.
+	if event.is_action("ui_right"):
+		cell += Vector2.RIGHT
+	elif event.is_action("ui_up"):
+		cell += Vector2.UP
+	elif event.is_action("ui_left"):
+		cell += Vector2.LEFT
+	elif event.is_action("ui_down"):
+		cell += Vector2.DOWN
+
+
+func _draw() -> void:
+	draw_rect(Rect2(-grid.cellSize / 2, grid.cellSize), Color.ALICE_BLUE, false, 2.0)