hierarchy rework

fixed swap

Scripts/Elements/Water.cs

@@ -0,0 +1,35 @@
+using Godot;
+
+namespace FOU.Scripts.Elements;
+
+public class Water : Solid {
+    public Water(int x, int y, ref Level level) : base(x, y, ref level) {
+        Color = Colors.Blue;
+        Color = AddColorVariance(Color);
+    }
+
+    public override bool Update(int currentFrame) {
+        if (!base.Update(currentFrame)) return false;
+
+        Tick();
+
+        return true; // not necessarily end, subclasses could do some more things
+    }
+
+    protected override void Tick() {
+        int randomDirection = 1;
+        if (GD.Randi() % 2 != 0)
+            randomDirection *= -1;
+
+        if (Level.IsEmpty(Position + Vector2I.Down)) {
+            Level.Swap(this, Position + Vector2I.Down);
+            return;
+        } else if (Level.IsEmpty(Position + Vector2I.Right * randomDirection)) {
+            Level.Swap(this, Position + Vector2I.Right * randomDirection);
+            return;
+        } else if (Level.IsEmpty(Position + Vector2I.Right * randomDirection * -1)) {
+            Level.Swap(this, Position + Vector2I.Right*randomDirection);
+            return;
+        }
+    }
+}