Split client and server

server/grid/Cell.gd

@@ -0,0 +1,3 @@
+class_name Cell
+
+var player_list := [] as Array[Player]

server/grid/Grid.gd

@@ -0,0 +1,31 @@
+extends Node
+
+## Width of the grid in cells.
+const width := 100
+
+## Height of the grid in cells.
+const height := 100
+
+## The size of a single cell.
+const cell_size := 10.0
+
+var cells: Array[Cell]
+
+func _init():
+	cells.resize(width * height)
+	
+	for i in cells.size():
+		cells[i] = Cell.new()
+
+func notify_cell_changed(player: Player, old_pos: Vector2i, new_pos: Vector2i):
+	print(player.name, " cell changed! ", old_pos, " ", new_pos)
+	add_player(player, new_pos)
+	remove_player(player, old_pos)
+
+func add_player(player: Player, coords: Vector2i):
+	var cell := cells[coords.x + coords.y * height]
+	cell.player_list.append(player)
+
+func remove_player(player: Player, coords: Vector2i):
+	var cell := cells[coords.x + coords.y * height]
+	cell.player_list.erase(player)