using UnityEngine;

/// <summary>
/// Example of interacting between objects using a name lookup, if
/// a reference hasn't already been assigned in the inspector.
/// </summary>
public class HybridLookupExample : MonoBehaviour
{
	#region Properties
	
	/// <summary>
	/// Object to point camera at.
	/// </summary>
	public Transform targetView;
	
	/// <summary>
	/// Camera to point at object.
	/// </summary>
	public Camera targetCamera;
	
	#endregion
	
	#region Events
	
	/// <summary>
	/// Load references by name if not already assigned.
	/// </summary>
	void Start()
	{
		if (this.targetView == null)
		{
			GameObject g = GameObject.Find("target");
			if (g != null)
			{
				this.targetView = g.transform;
			}
		}
		if (this.targetCamera == null)
		{
			GameObject g = GameObject.Find("camera");
			if (g != null)
			{
				this.targetCamera = g.camera;
			}
		}		
	}
	
	/// <summary>
	/// Keep camera pointed at object.
	/// </summary>
	void Update()
	{
		// early exit for missing references
		if (this.targetView == null) return;
		if (this.targetCamera == null) return;
		
		// point camera
		this.targetCamera.transform.LookAt(this.targetView);
	}
	
	#endregion	
}