AfterAction.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 ******************************************************************************/
package com.badlogic.gdx.scenes.scene2d.actions;

import com.badlogic.gdx.scenes.scene2d.Action;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.utils.Array;

/**
 * Executes an action only after all other actions on the actor at the time this action was added have finished.
 * 
 * @author Nathan Sweet
 */
public class AfterAction extends DelegateAction {
	private Array<Action> waitForActions = new Array(false, 4);

	public void setActor(Actor actor) {
		if (actor != null)
			waitForActions.addAll(actor.getActions());
		super.setActor(actor);
	}

	public void restart() {
		super.restart();
		waitForActions.clear();
	}

	public boolean act(float delta) {
		Array<Action> currentActions = actor.getActions();
		if (currentActions.size == 1)
			waitForActions.clear();
		for (int i = waitForActions.size - 1; i >= 0; i--) {
			Action action = waitForActions.get(i);
			int index = currentActions.indexOf(action, true);
			if (index == -1)
				waitForActions.removeIndex(i);
		}
		if (waitForActions.size > 0)
			return false;
		return action.act(delta);
	}
}