ActionUseAbility.java

package Roguelike.Entity.AI.BehaviourTree.Actions;

import Roguelike.Global;
import Roguelike.Ability.ActiveAbility.ActiveAbility;
import Roguelike.Entity.GameEntity;
import Roguelike.Entity.AI.BehaviourTree.BehaviourTree.BehaviourTreeState;
import Roguelike.Entity.Tasks.TaskUseAbility;
import Roguelike.Tiles.Point;

import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.XmlReader.Element;

public class ActionUseAbility extends AbstractAction
{
	String abilityKey;

	@Override
	public BehaviourTreeState evaluate( GameEntity entity )
	{
		ActiveAbility ability = (ActiveAbility) getData( abilityKey, null );

		// if no target or ability, fail
		if ( ability == null )
		{
			State = BehaviourTreeState.FAILED;
			return State;
		}

		ability.setCaster( entity );
		ability.source = entity.tile[0][0];

		Array<Point> validTargets = ability.getValidTargets();

		if ( validTargets.size == 0 )
		{
			State = BehaviourTreeState.FAILED;
			return State;
		}

		entity.tasks.add( new TaskUseAbility( validTargets.get( 0 ).copy(), ability ) );

		Global.PointPool.freeAll( validTargets );

		State = BehaviourTreeState.SUCCEEDED;
		return State;
	}

	@Override
	public void cancel()
	{
	}

	@Override
	public void parse( Element xmlElement )
	{
		abilityKey = xmlElement.getAttribute( "Key" );
	}
}