SafeZone.cs

using UnityEngine;
using System.Collections;

/// <summary>
/// Encapsulates an area of space where ships can move around freely, controlled from top down view.
/// Used to implement colony territories
/// </summary>
public class SafeZone : MonoBehaviour {
	
	float radius;
	ILine ring;
	SelectableBody source;
	bool isEntered = false;
	
	public static SafeZone Spawn(float zoneRadius, GameObject origin)
	{
		GameObject obj = new GameObject("SafeZone", typeof(SafeZone), typeof(LineDrawer), typeof(SphereCollider));
		obj.transform.parent = origin.transform;
		obj.transform.position = Vector3.zero;
		obj.layer = LayerMask.NameToLayer("Ignore Raycast");
		
		SafeZone safeZone = obj.GetComponent<SafeZone>();
		SphereCollider collider = obj.GetComponent<SphereCollider>();
		
		safeZone.radius = zoneRadius;
		collider.radius = zoneRadius;
		collider.isTrigger = true;
		
		safeZone.source = origin.GetComponent<SelectableBody>();
		
		return safeZone;
	}
	
	
	void OnTriggerExit(Collider other)
	{
		Ship ship = other.GetComponent<Ship>();
		if(ship != null)
		{
			ship.EnterFTL();
			OnExit();
		}
		else if(source is Planet)
			OnExit();
	}
	
	void OnTriggerEnter(Collider other)
	{
		if(other.name == "CameraFocus" && source is Planet)
		{
			Game.gui.planetMenu.Open(source.gameObject);
		}
		else
		{
			Ship ship = other.GetComponent<Ship>();
			if(ship != null)
			{
				if(ship.GetLaunchState() == "FTL")
				{
					ship.LeaveFTL();
					source.SelfSelect(); //TODO: Maybe center on the planet instead or in addition?
				}
				OnEnter();
			}
		}
	}
	
	public void OnExit()
	{
		if(!isEntered) return;
		isEntered = false;
		
		if(source is Planet)
			Game.gui.planetMenu.Close();
	}
	
	public void OnEnter()
	{
		if(isEntered) return;
		isEntered = true;

		Game.mainCamera.RestoreDefault();
		
		if(source is Planet)
			Game.gui.planetMenu.Open(source.gameObject);
	}
	
	public void SetRadius(float radius)
	{
		this.radius = radius;
	}
	
	public void ShowRing()
	{
		if(ring == null)
			DrawRing();
		ring.Show();
	}
	
	public bool Contains(Vector3 point)
	{
		return (transform.position - point).magnitude < radius;
	}
	
	public void HideRing()
	{
		ring.Hide();
	}
	
	void DrawRing()
	{
		ring = GetComponent<LineDrawer>().CreateCircle(gameObject, radius ,Color.green, 5, radius);
	}
}