Android Open Source - libgdx-demo-pax-britannica Fish

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License

The source code is released under:

Copyright (c) 2010 Ben Abraham, Renaud B?dard, Henk Boom, Daniel Burton, Matthew Gallant Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated ...

Java Source Code

package de.swagner.paxbritannica.background;
/*from ww w.  j  av a 2s.  com*/
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;

import de.swagner.paxbritannica.Resources;

public class Fish extends Sprite {

  private float SPEED = 0.2f;
  private float LIFETIME = MathUtils.random(8, 12);
  private float FADE_TIME = 2;

  private float random_direction = MathUtils.random()<0.5f ? 1:-1;
  private float random_scale = MathUtils.random() * 0.75f + 0.2f;
  private float random_speed = MathUtils.random() + 0.5f;
  private float random_opacity = MathUtils.random() * 0.1f + 0.1f;

  private Vector2 position = new Vector2();

  public boolean alive = true;

  private float since_alive = 0;
  
  float delta;

  public Fish(Vector2 position) {
    super();
    this.position = position;
    this.setPosition(position.x, position.y);
    this.setRotation(random_direction);
    this.setScale(random_scale, random_scale);

    switch (MathUtils.random(0, 7)) {
    case 0:
      this.set(Resources.getInstance().fish1);
      break;
    case 1:
      this.set(Resources.getInstance().fish2);
      break;
    case 2:
      this.set(Resources.getInstance().fish3);
      break;
    case 3:
      this.set(Resources.getInstance().fish4);
      break;
    case 4:
      this.set(Resources.getInstance().fish5);
      break;
    case 5:
      this.set(Resources.getInstance().fish6);
      break;
    case 6:
      this.set(Resources.getInstance().fish7);
      break;
    default:
      this.set(Resources.getInstance().fish8);
      break;
    }
    
    if(random_direction==-1) {
      flip(true, false);
    }
  }

  @Override
  public void draw(Batch batch) {
    super.draw(batch);
    
    delta = Math.min(0.06f, Gdx.graphics.getDeltaTime());
    
    since_alive += delta/2.f;
    position.add((SPEED + random_speed) * delta * 5.f*random_direction,0);
    this.setPosition(position.x, position.y);

    
    if (since_alive < FADE_TIME) {
      super.setColor(1, 1, 1, Math.min((since_alive / FADE_TIME)*random_opacity,random_opacity));
    } else {
      this.setColor(1, 1, 1, Math.min(1 - (since_alive - LIFETIME + FADE_TIME) / FADE_TIME, 1) * random_opacity);
    }
    if (since_alive > LIFETIME) {
      alive = false;
    }
  }
  
  public void reset() {
    SPEED = 0.2f;
    LIFETIME = MathUtils.random(8, 12);
    FADE_TIME = 2;

    random_direction = MathUtils.random()<0.5f ? 1:-1;
    random_scale = MathUtils.random() * 0.75f + 0.2f;
    random_speed = MathUtils.random() + 0.5f;
    random_opacity = MathUtils.random() * 0.1f + 0.1f;
    
    alive = true;
    since_alive = 0;
    
    this.position = new Vector2(MathUtils.random(-100, 800),MathUtils.random(-100, 400));

    if(random_direction==-1) {
      flip(true, false);
    }
    this.setPosition(position.x, position.y);
    this.setRotation(random_direction);
    this.setScale(random_scale, random_scale);
  }
}

Java Source Code List

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