/*
 *
 *	Adventure Creator
 *	by Chris Burton, 2013-2014
 *	
 *	"ActionCharMove.cs"
 * 
 *	This action moves characters by assinging them a Paths object.
 *	If a player is moved, the game will automatically pause.
 * 
*/

using UnityEngine;
using System.Collections;
using AC;

#if UNITY_EDITOR
using UnityEditor;
#endif

[System.Serializable]
public class ActionCharMove : Action
{

	public int charToMoveID = 0;
	public int movePathID = 0;
	
	public Paths movePath;
	public bool isPlayer;
	public Char charToMove;
	public bool doTeleport;
	public bool doStop;
	
	
	public ActionCharMove ()
	{
		this.isDisplayed = true;
		title = "Character: Move along path";
	}
	
	
	override public float Run ()
	{
		if (movePath && movePath.GetComponent <Char>())
		{
			Debug.LogWarning ("Can't follow a Path attached to a Character!");
			return 0f;
		}

		if (!isRunning)
		{
			isRunning = true;
			
			if (isPlayer)
			{
				charToMove = GameObject.FindWithTag (Tags.player).GetComponent <Player>();
			}
			else if (isAssetFile && charToMoveID != 0)
			{
				// Attempt to find the correct scene object
				ConstantID idObject = Serializer.returnComponent <ConstantID> (charToMoveID);
				if (idObject != null && idObject.GetComponent <Char>())
				{
					charToMove = idObject.GetComponent <Char>();
				}
			}

			if (isAssetFile && movePathID != 0)
			{
				// Attempt to find the correct scene object
				ConstantID idObject = Serializer.returnComponent <ConstantID> (movePathID);
				if (idObject != null && idObject.GetComponent <Paths>())
				{
					movePath = idObject.GetComponent <Paths>();
				}
				else
				{
					movePath = null;
				}
			}
			
			if (charToMove)
			{
				if (charToMove is NPC)
				{
					NPC npcToMove = (NPC) charToMove;
					npcToMove.FollowReset ();
				}

				if (doStop)
				{
					charToMove.EndPath ();
				}
				else if (movePath)
				{
					if (doTeleport)
					{
						charToMove.transform.position = movePath.transform.position;
						
						// Set rotation if there is more than one node
						if (movePath.nodes.Count > 1)
						{
							charToMove.SetLookDirection (movePath.nodes[1] - movePath.nodes[0], true);
						}
					}
					
					if (isPlayer && movePath.pathType != AC_PathType.ForwardOnly)
					{
						Debug.LogWarning ("Cannot move player along a non-forward only path, as this will create an indefinite cutscene.");
					}
					else
					{
						if (willWait && movePath.pathType != AC_PathType.ForwardOnly)
						{
							willWait = false;
							Debug.LogWarning ("Cannot pause while character moves along a non-forward only path, as this will create an indefinite cutscene.");
						}
						
						charToMove.SetPath (movePath);
					
						if (willWait)
						{
							return defaultPauseTime;
						}
					}
				}
			}

			return 0f;
		}
		else
		{
			if (charToMove.GetPath () != movePath)
			{
				isRunning = false;
				return 0f;
			}
			else
			{
				return (defaultPauseTime);
			}
		}
	}

	
	#if UNITY_EDITOR

	override public void ShowGUI ()
	{
		isPlayer = EditorGUILayout.Toggle ("Is Player?", isPlayer);

		if (!isPlayer)
		{
			charToMove = (Char) EditorGUILayout.ObjectField ("Character to move:", charToMove, typeof(Char), true);

			if (charToMove && charToMove.GetComponent <ConstantID>())
			{
				charToMoveID = charToMove.GetComponent <ConstantID>().constantID;
			}
		}

		doStop = EditorGUILayout.Toggle ("Stop moving?", doStop);
		if (!doStop)
		{
			if (isAssetFile)
			{
				movePathID = EditorGUILayout.IntField ("Path to follow (ID):", movePathID);
			}
			else
			{
				movePath = (Paths) EditorGUILayout.ObjectField ("Path to follow:", movePath, typeof(Paths), true);
			}

			doTeleport = EditorGUILayout.Toggle ("Teleport to start?", doTeleport);
			willWait = EditorGUILayout.Toggle ("Pause until finish?", willWait);

			if (movePath != null && movePath.GetComponent <Char>())
			{
				EditorGUILayout.HelpBox ("Can't follow a Path attached to a Character!", MessageType.Warning);
			}
		}
		
		AfterRunningOption ();
	}
	
	
	override public string SetLabel ()
	{
		string labelAdd = "";
		
		if (charToMove && movePath)
		{
			labelAdd = " (" + charToMove.name + " to " + movePath.name + ")";
		}
		else if (isPlayer && movePath)
		{
			labelAdd = " (Player to " + movePath.name + ")";
		}
		
		return labelAdd;
	}

	#endif
	
}