Android Open Source - Space.Sprint Space Background

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Back to project page Space.Sprint.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.obisapps.spacerun;
//from   w  w  w .j a  v  a2s . c o m
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Rect;

public class SpaceBackground {

  private Canvas canvas;
  
  LevelCharacter levelCharacter;
  
  Paint speedParticlePaint = new Paint();
  Random randGen = new Random();
  
  List<Point> starList = new ArrayList<Point>();
  
  Paint starPaint = new Paint();
  
  
  public SpaceBackground() {

  
  }
  
  
  public void init(Canvas pCanvas, LevelCharacter lCharacter) {
    
    canvas = pCanvas;
    
    levelCharacter = lCharacter;
    
    starList.clear();
    
    for (int b = 0; b <= 20; b++ ) {
      
      starList.add(new Point(randGen.nextInt(canvas.getWidth()), randGen.nextInt(canvas.getHeight())));
      
      
    }
    
    
    starPaint.setColor(Color.YELLOW);
    
  }
  

  public void draw() {

    canvas.drawColor(Color.BLACK);
    
    
    for ( int d = 0; d <= (starList.size() - 1); d++ ) {
      
      if (starList.get(d) != null) {
        
        canvas.drawLine((starList.get(d).x - 4), starList.get(d).y, (starList.get(d).x + 4), starList.get(d).y, starPaint);
        canvas.drawLine(starList.get(d).x, (starList.get(d).y - 4), starList.get(d).x, (starList.get(d).y + 4), starPaint);
        
      }
    
    }
    
  }
  
  public void update() {
    if (!starList.isEmpty()) {
        
    
      for ( int y = 0; y <= (starList.size() - 1); y++ ) { 
        if (starList.get(y) != null) {
          //starList.get(y).x -= (levelCharacter.getScrollSpeed()/2);
          starList.get(y).x -= 1;

        }
      }

    
      int upcomingStars = 0;
      
      for ( int x = 0; x <= (starList.size() - 1); x++ ) {
        
        
        
        if (starList.get(x) != null) {
        
          if (starList.get(x).x < -50) {
          
            starList.remove(x);
            
          }
          
          if (starList.get(x).x > canvas.getWidth()) {
            
            upcomingStars ++;
            
          }
        
        }
        
      }
      
      if (upcomingStars < 5) {
        
        
        for (int b = 0; b <= 5; b++ ) {
          
          starList.add(new Point(randGen.nextInt(canvas.getWidth()) + canvas.getWidth(), randGen.nextInt(canvas.getHeight())));
          
          
        }
        
        
        
      }
      
    
    }
    
  }

  
  
  
}

Java Source Code List