content: /*
   * The MIT License (MIT)
   *
   * FXGL - JavaFX Game Library
   *
   * Copyright (c) 2015-2017 AlmasB (almaslvl@gmail.com)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  package com.almasb.fxglgames.pacman.components;
  
  import com.almasb.fxgl.core.math.FXGLMath;
  import com.almasb.fxgl.entity.component.Component;
  import com.almasb.fxgl.texture.Texture;
  import javafx.geometry.Rectangle2D;
  
  /**
   * @author Almas Baimagambetov (almaslvl@gmail.com)
   */
  public class PaletteChangingComponent extends Component {
  
      private Texture texture;
  
      private double lastX = 0;
      private double lastY = 0;
  
      private double timeToSwitch = 0;
      private int spriteColor = 0;
  
      public PaletteChangingComponent(Texture texture) {
          this.texture = texture;
      }
  
      @Override
      public void onAdded() {
          entity.getViewComponent().addChild(texture);
      }
  
      @Override
      public void onUpdate(double tpf) {
          timeToSwitch += tpf;
  
          if (timeToSwitch >= 5.0) {
              spriteColor = (int) (160 * FXGLMath.random(0, 2) * 0.24);
              timeToSwitch = 0;
          }
  
          double dx = entity.getX() - lastX;
          double dy = entity.getY() - lastY;
  
          lastX = entity.getX();
          lastY = entity.getY();
  
          if (dx == 0 && dy == 0) {
              // didn't move
              return;
          }
  
          if (Math.abs(dx) > Math.abs(dy)) {
              // move was horizontal
              if (dx > 0) {
                  texture.setViewport(new Rectangle2D(130*3 * 0.24, spriteColor, 130 * 0.24, 160 * 0.24));
              } else {
                  texture.setViewport(new Rectangle2D(130*2 * 0.24, spriteColor, 130 * 0.24, 160 * 0.24));
              }
          } else {
              // move was vertical
              if (dy > 0) {
                  texture.setViewport(new Rectangle2D(0, spriteColor, 130 * 0.24, 160 * 0.24));
              } else {
                  texture.setViewport(new Rectangle2D(130 * 0.24, spriteColor, 130 * 0.24, 160 * 0.24));
              }
          }
      }
  }
  