package AIBehaviours;



import com.game.Player;

import com.game.Preferences;

import com.game.Vec2;

import com.game.Scenes.PlayScene;



/**

 * Strategy that chases the closest cursor

 * @deprecated

 * @see Task

 * @author Ying

 *

 */

public class ChaseClosestCursorStrategy extends Strategy 

{

	/**

	 * Creates a new instance of the ChaseClosestCursorStrategy

	 * @param sceneRef Reference to the PlayScene

	 * @param playerRef Reference to the Player

	 */

	public ChaseClosestCursorStrategy(PlayScene sceneRef, Player playerRef)

	{

		super(sceneRef,playerRef,0.5f);

	}

	

	@Override public void Start() 

	{}

	

	/**

	 * Updates the strategy

	 */

	@Override protected void Update() 

	{

		Vec2 cursorPos = playerRef.GetCursor().GetPosition();

		Vec2 enemyPos = null;

		Vec2 destination = new Vec2();		

		Vec2 vecToEnemy = new Vec2();

		

		float minLenght = Preferences.Get().mapWidth*2; // Really large number

		for(int i= 0; i < sceneRef.GetPlayers().size(); i++)

		{

			if(sceneRef.GetPlayers().elementAt(i).GetID() != this.playerRef.GetID())

			{

				if(sceneRef.GetPlayers().elementAt(i).GetTotalDensity() > 0)

				{

					enemyPos = sceneRef.GetPlayers().elementAt(i).GetCursor().GetPosition();

					vecToEnemy.Set(enemyPos.X()-cursorPos.X(), enemyPos.Y()-cursorPos.Y());

					if(vecToEnemy.Length() < minLenght)

					{

						minLenght = (float) vecToEnemy.Length();

						destination.Set(vecToEnemy.X(), vecToEnemy.Y());

					}

				}

			}			

		}

		

		this.playerRef.GetCursor().MoveInDirection(destination);

	}



}