gistfile1.txt

// BaseObj.cs

using UnityEngine;
using System.Collections;

public class BaseObj : MonoBehaviour {
  
	public TextMesh template;
	public float health;
	
	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}

public interface IInteractive{
	void clicked();
}

// Building.sc

using UnityEngine;
using System.Collections;

public class Building : BaseObj, IInteractive {

  private float money;
	
	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
	
	}
	
	public void clicked(){
		HUDisplay.displayInfo( this );
	}
}


// HUDisplay.cs

using UnityEngine;
using System.Collections;

public class HUDisplay : MonoBehaviour {

  // Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
	
	}
	
	public void displayInfo(BaseObj theObject){
		Debug.Log (theObject.health);
	}
}