diff --git a/half-earth/scripts/Tile.cs b/half-earth/scripts/Tile.cs
new file mode 100644
index 0000000..f46e5ee
--- /dev/null
+++ b/half-earth/scripts/Tile.cs
@@ -0,0 +1,8 @@
+using Godot;
+
+public struct Tile
+{
+    public bool isHighlighted;
+    public float value;
+    public ShaderMaterial material;
+}
\ No newline at end of file
diff --git a/half-earth/scripts/WorldGrid.cs b/half-earth/scripts/WorldGrid.cs
index a59855d..7f55d6c 100644
--- a/half-earth/scripts/WorldGrid.cs
+++ b/half-earth/scripts/WorldGrid.cs
@@ -12,11 +12,6 @@ public class WorldGrid : Node2D
     [Export]
     public int CellSize { get; set; }
     
-    private struct Tile
-    {
-        public bool isHighlighted;
-        public ShaderMaterial material;
-    }
     private Tile[,] _tiles;
 
     // Called when the node enters the scene tree for the first time.
@@ -52,6 +47,11 @@ public class WorldGrid : Node2D
 
         _tiles[x, y].isHighlighted ^= true;
     }
+    
+    public void SetTileValue(int x, int y, float value)
+    {
+        _tiles[x, y].value = value;
+    }
 
     public void GetGridPos(Vector2 position, out int x, out int y)
     {
@@ -84,6 +84,7 @@ public class WorldGrid : Node2D
             {
                 var tile = new Tile();
                 tile.isHighlighted = false;
+                tile.value = 0.0f;
                 
                 var node = TileScene.Instance<Node2D>();
                 this.AddChild(node);