src/main/java/eu/svjatoslav/sixth/e3d/gui/humaninput/WorldNavigationTracker.java

   1 /*
   2  * Sixth 3D engine. Copyright ©2012-2018, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 3 of the GNU Lesser General Public License
   6  * or later as published by the Free Software Foundation.
   7  *
   8  */
   9
  10 package eu.svjatoslav.sixth.e3d.gui.humaninput;
  11
  12 import eu.svjatoslav.sixth.e3d.gui.Avatar;
  13 import eu.svjatoslav.sixth.e3d.gui.ViewPanel;
  14 import eu.svjatoslav.sixth.e3d.gui.textEditorComponent.KeyboardHelper;
  15
  16 import java.awt.event.KeyEvent;
  17
  18 public class WorldNavigationTracker implements UserInputHandler {
  19
  20     @Override
  21     public boolean beforeRender(final ViewPanel viewPanel,
  22                                 final int millisecondsSinceLastFrame) {
  23
  24         trackKeys(millisecondsSinceLastFrame, viewPanel);
  25         return false;
  26     }
  27
  28     @Override
  29     public void focusLost(final ViewPanel viewPanel) {
  30     }
  31
  32     @Override
  33     public void focusReceived(final ViewPanel viewContext) {
  34     }
  35
  36     @Override
  37     public void keyPressed(final KeyEvent event, final ViewPanel viewContext) {
  38     }
  39
  40     @Override
  41     public void keyReleased(final KeyEvent event, final ViewPanel viewContext) {
  42     }
  43
  44     /**
  45      * interpret currently pressed keys
  46      */
  47     public void trackKeys(final long millisecondsSinceLastFrame,
  48                           final ViewPanel viewContext) {
  49
  50         final UserInputTracker inputTracker = viewContext.getUserInputTracker();
  51
  52         final Avatar avatar = viewContext.getAvatar();
  53
  54         final double actualAcceleration = millisecondsSinceLastFrame
  55                 * avatar.avatarAcceleration
  56                 * (1 + (avatar.getMovementSpeed() / 10));
  57
  58         if (inputTracker.isKeyPressed(KeyboardHelper.UP))
  59             avatar.getMovementVector().z += actualAcceleration;
  60
  61         if (inputTracker.isKeyPressed(KeyboardHelper.DOWN))
  62             avatar.getMovementVector().z -= actualAcceleration;
  63
  64         if (inputTracker.isKeyPressed(KeyboardHelper.RIGHT))
  65             avatar.getMovementVector().x += actualAcceleration;
  66
  67         if (inputTracker.isKeyPressed(KeyboardHelper.LEFT))
  68             avatar.getMovementVector().x -= actualAcceleration;
  69
  70         avatar.enforceSpeedLimit();
  71     }
  72 }