Android Open Source - DolphinOES Touch Data

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License

The source code is released under:

Apache License

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Java Source Code

/******************************************************************************* Copyright 2014 See AUTHORS file.
 * /*w w  w . j av  a 2  s.  co 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.architecture.core.input;

import com.badlogic.gdx.math.Vector2;
import com.sidereal.dolphinoes.architecture.core.input.Input.InputStatus;

/** Represents the data related to one touch action . Is created if it does not exist
 * whenever the input listener detects the action has been used. If an instance for a specific action has not been
 * created and the data for that input action is requested by the user via {@link Input#getTouchInputData(int)}, an instance
 * is created and added to the input system.
 * 
 * @author Claudiu Bele */
public class TouchData extends ActionData
{
  
  /** Current touch position
   */
  private Vector2 position;
  
  /** Start position of the touch. Set in the constructor
   */
  private Vector2 startPosition;
  
  /** The amount of drag for a particular pointer from the moment of press.
   * If the button is not pressed, value is {@link Vector2#Zero}
   */
  private Vector2 drag;
  
  private Vector2 deltaDrag;
  
  public TouchData(int code)
  {
    super(code);
    startPosition = new Vector2(0, 0);
    position = new Vector2();  
    drag = new Vector2();
    deltaDrag = new Vector2();
  }
  
  
  // region methods
  
  /** Updates the data related to one touch button. The x and y position of the finger is
   * processed for calculating the drag and delta drag, which can be retrieved using
   * {@link #getDrag()} and {@link #getDeltaDrag()}
   * 
   * @param inputStatus The input status of the finger ( None, Down, Press, Up )
   * @param x the x-axis position of the finger
   * @param y the y-axis position of the finger
   */
  void update(InputStatus inputStatus, float x, float y)
  {
    this.inputStatus = inputStatus;
    if(inputStatus.equals(InputStatus.Down))
    {
      startPosition.set(x, y);
      position.set(x, y);
    }
    else
    {
      deltaDrag.set(x - position.x , y - position.y);
      position.set(x,y);
    }
    
    drag.set(position.x -  startPosition.x, position.y - startPosition.y);
    super.update(inputStatus);
    
  }
  
  // region setters/getters
  
  public Vector2 getDrag()
  {
    // return a copy so as to not be able to change it
    return drag.cpy();
  }
  
  public Vector2 getDeltaDrag()
  {
    // return a copy so as to not be able to change it
    return deltaDrag.cpy();
  }
  
  public Vector2 getPosition()
  {
    return position.cpy();
  }
  
  public Vector2 getStartPosition()
  {
    return startPosition.cpy();
  }
  
  // endregion setters/getters
  
  // endregion methods
}

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