using UnityEngine;

/// <summary>
/// Example of accessing different objects through references setup
/// in the game object inspector.
/// </summary>
public class AssignExample : MonoBehaviour
{
	#region Properties
	
	/// <summary>
	/// Link to a camera setup in the inspector.
	/// </summary>
	public Camera targetCamera;
	
	/// <summary>
	/// Link to a specific component type.
	/// </summary>
	public OtherComponent otherTarget;
	
	/// <summary>
	/// How often to call other component.
	/// </summary>
	public float callFrequency = 1f;
	
	#endregion
	
	#region Events
	
	/// <summary>
	/// Checks that all references have been assigned, outputting log
	/// errors if any are missing and deactivates.
	/// </summary>
	void Start()
	{
		if (this.targetCamera == null)
		{
			Debug.LogError("targetCamera is not set");
			this.enabled = false;
		}
		if (this.otherTarget == null)
		{
			Debug.LogError("otherTarget is not set");
			this.enabled = false;
		}
	}
	
	/// <summary>
	/// Points the camera at the other component and calls a method
	/// on OtherComponent with the desired frequency.
	/// </summary>
	void Update()
	{
		this.targetCamera.transform.LookAt(this.otherTarget.transform);
		if (Time.time - this.lastCall > this.callFrequency)
		{
			this.otherTarget.SetLastCalled(Time.time);
			this.lastCall = Time.time;
		}
	}
		
	#endregion	
	
	#region Private
	
	/// <summary>
	/// Last time OtherComponent was called.
	/// </summary>
	private float lastCall = 0f;
	
	#endregion
}