Android Open Source - SCBIO-OneButtonLarry Gap Jump Stage

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Back to project page SCBIO-OneButtonLarry.

License

The source code is released under:

MIT License

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Java Source Code

package org.scbio.onebuttonlarry.stage;
//from  w w w.j  a v a  2s.  co m
import org.scbio.onebuttonlarry.R;
import org.scbio.onebuttonlarry.game.GameStage;
import org.scbio.onebuttonlarry.game.GameView;
import org.scbio.onebuttonlarry.game.Larry;

import android.content.Context;
import android.graphics.Canvas;
import android.media.AudioManager;
import android.media.SoundPool;
import android.view.View;

public class GapJumpStage extends GameStage {

  /*
   * Stage map constants.
   */

  private static final int BG_RES = R.drawable.stagebg_gapjump;
  private static final float Y_GROUND = 0.626f;

  private GameView parent;
  private JumpLarry larry;

  public  GapJumpStage(Context context, GameView parent) {
    this.parent = parent;

    larry = new JumpLarry(context, parent, 0.1f);

    restartStage();
    this.setStageBackground(BG_RES);
  }

  @Override
  public void onDrawStage(Canvas canvas) {
    larry.drawSprite(canvas);
  }

  @Override
  public void onSizeChanged(int w, int h, int oldw, int oldh){
    restartStage();
  }

  /*
   * Called when user touches the GameView
   */

  @Override
  protected void onTap() {
    if(!larry.isJumping()) larry.doAction();
  }

  /*
   * Called by game update thread
   */

  @Override
  protected void updatePhysics(double delay){
    larry.updateLarry(delay);

    if(larry.isJumping()){
      larry.setIncY(larry.jump(delay, larry.getIncY()));

      if(larry.getIncY() >= -(JumpLarry.LARRY_JUMPSPEEDY))
      {
        larry.jump =false;
        larry.setIncY(0);
        larry.setIncX(JumpLarry.LARRY_REGSPEED);
        larry.setPosY(parent.getHeight()*Y_GROUND-1);
      }
    }

    if(larry.hasFallen()) restartStage();

    larry.incPos(delay);
    if(larry.getPosX() > parent.getWidth()-larry.getWidth()/2) finishStage();

  }

  @Override
  protected void restartStage() {
    larry.setPos(-larry.getWidth()/2, Y_GROUND*parent.getHeight());
    larry.setIncX(JumpLarry.LARRY_REGSPEED);
    larry.setIncY(0);
  }

  private class JumpLarry extends Larry{

    /*
     * Larry constants
     */

    public static final int LARRY_REGSPEED= 6;
    public static final int LARRY_JUMPSPEEDY = -45; 
    public static final float LARRY_JUMPSPEEDX = 0.01171875f;
    public static final float GRAVITY = 5f;

    private SoundPool mSoundPool;
    private int jumpSound;
    private int deathSound;

    private boolean jump = false;

    public JumpLarry(Context context, View view, float scale) {
      super(context, view, scale);
      mSoundPool = new SoundPool(2, AudioManager.STREAM_MUSIC, 0);
      jumpSound = mSoundPool.load(context, LARRY_SOUND_JUMP, 1);
      deathSound = mSoundPool.load(context, LARRY_SOUND_DIE,1);
    }

    @Override
    protected void doAction() {
      jump = true;
      if(parent.areGameSoundEffectsEnabled()) mSoundPool.play(jumpSound, 1, 1, 1, 0, 1);
      setIncY(LARRY_JUMPSPEEDY);
      setIncX(LARRY_JUMPSPEEDX*parent.getWidth());
    }

    public double jump(double t, double vinit) {
      return vinit + GRAVITY*t;
    }

    public boolean isJumping(){
      return jump;
    }

    public boolean hasFallen()
    {
      boolean firstgap = (getPosX() > 0.29*parent.getWidth() && getPosX() < 0.36*parent.getWidth());
      boolean secondgap = (getPosX() > 0.5*parent.getWidth() && getPosX() < 0.53*parent.getWidth()); 
      boolean result = (firstgap || secondgap) && !jump;

      if(result && parent.areGameSoundEffectsEnabled()) mSoundPool.play(deathSound, 1, 1, 1, 0, 1);
      return result;
    }
  }
}

Java Source Code List