Added a player handler so the code look a bit better

src/ei/game/player/Player.java

@@ -0,0 +1,15 @@
+package ei.game.player;
+
+import ei.engine.scene.Node;
+import ei.game.scene.units.Unit;
+
+public abstract class Player {
+	
+	public abstract void addUnit(Unit u);
+	
+	public abstract void removeUnit(Unit u);
+	
+	public abstract Node getNode();
+	
+	public abstract void update();
+}