Android Open Source - DolphinOES Event Timer

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The source code is released under:

Apache License

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Java Source Code

/*******************************************************************************
 * Copyright 2014 See AUTHORS file.//from w  w  w  .  jav a2  s  .  c o m
 * 
 * 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.sidereal.dolphinoes.behaviors.events;

import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Map.Entry;
import com.sidereal.dolphinoes.architecture.AbstractEvent;
import com.sidereal.dolphinoes.architecture.DolphinOES;
import com.sidereal.dolphinoes.architecture.GameBehavior;
import com.sidereal.dolphinoes.architecture.GameObject;

/** Schedule {@link AbstractEvent} objects to run after a specific amount of
 * time.
 * 
 * @author Claudiu Bele */
public class EventTimer extends GameBehavior
{
  // region fields

  // it is the other way around because you can change values but not keys
  // the Float is the timeRemaining, which will be changed with each update,
  // so we want it as the value
  private Hashtable<AbstractEvent, Float> timedEvents;
  private ArrayList<AbstractEvent> eventsToRemove;
  private Hashtable<AbstractEvent, Float> eventsToAdd;

  // endregion fields

  // region constructors

  public EventTimer(GameObject obj)
  {

    super(obj);
    timedEvents = new Hashtable<AbstractEvent, Float>();
    eventsToAdd = new Hashtable<AbstractEvent, Float>();
    eventsToRemove = new ArrayList<AbstractEvent>();
  }

  // endregion constructors

  // region methods

  @Override
  public void update()
  {

    for (Entry<AbstractEvent, Float> entry : eventsToAdd.entrySet())
    {
      timedEvents.put(entry.getKey(), entry.getValue());
    }
    eventsToAdd.clear();

    for (Entry<AbstractEvent, Float> entry : timedEvents.entrySet())
    {
      entry.setValue(entry.getValue() - DolphinOES.time.getDeltaTime());

      if (entry.getValue() < 0)
      {

        entry.getKey().run();
        eventsToRemove.add(entry.getKey());

      }
    }

    for (int i = 0; i < eventsToRemove.size(); i++)
    {
      timedEvents.remove(eventsToRemove.get(i));
    }

    eventsToRemove.clear();
  }

  public void setEvent(float seconds, AbstractEvent event)
  {

    eventsToAdd.put(event, seconds);
  }

  public void setEvent(float seconds, AbstractEvent event,
      AbstractEvent firstEvent)
  {

    firstEvent.run();
    eventsToAdd.put(event, seconds);
  }

  public void removeEvent(AbstractEvent event)
  {

    timedEvents.remove(event);
  }

  // endregion methods
}

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