particlelib alpha1

package com.particleshooter;

import java.util.ArrayList;
import java.util.Random;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;



public class ParticleLib {
    public static Random random = new Random();
    private float MIN_VEL = 4;
    private float MAX_VEL = 8;
    private ArrayList particles = new ArrayList();
    private String status = "stop";
    private double initX,initY;
    private int number_particles =5;
    private double radius;

    public ParticleLib(int total, float min_vel, float max_vel){
        this.number_particles = total;
        this.MIN_VEL = min_vel;
        this.MAX_VEL = max_vel;
        for (int i =0;i<number_particles;i++){
            this.particles.add(new Particle());
        }
    }

    public void setRadius(double newRadius){
        this.radius = newRadius;
    }

    public void setXY(double newX,double newY){
        this.initX = newX;
        this.initY = newY;
    }

    public void blit(Bitmap img,Canvas canvas,Paint mPaint){
        for (int i =0;i<this.number_particles;i++){
            canvas.drawBitmap(img, (float) (this.initX+((Particle) this.particles.get(i)).x),(float) (this.initY+((Particle) this.particles.get(i)).y),mPaint);
        }
    }
    public void move(){
        double x,y,hypotenuse;
        if(this.status != "stop"){
            for (int i =0;i<this.number_particles;i++){
                if (((Particle) this.particles.get(i)).status == "alive"){

                    ((Particle) this.particles.get(i)).x += Math.cos(((Particle) this.particles.get(i)).ang)*((Particle) this.particles.get(i)).vel;
                    ((Particle) this.particles.get(i)).y += Math.sin(((Particle) this.particles.get(i)).ang)*((Particle) this.particles.get(i)).vel;
                    x = (double) (((Particle) this.particles.get(i)).x+this.initX);
                    y = (double) (((Particle) this.particles.get(i)).y+this.initY);
                    hypotenuse = Math.sqrt(Math.pow(((Particle) this.particles.get(i)).x,2)+Math.pow(((Particle) this.particles.get(i)).y,2));
//                  if (x >= 480 || x <= 0 || y >= 854 || y <= 0 || hypotenuse >= this.radius){
//                      ((Particle) this.particles.get(i)).status = "dead";
//                  }
//                  part.particles[i].alpha = 255;
//                  if (hypotenuse/rad*100) > 40 then
//                      part.particles[i].alpha = 255-((hypotenuse/rad*80)*255)/100
//                  end
                }
            }
        }
    }
    public void init(){
        this.status = "run";
    }
    public void pause(){
        this.status = "pause";
    }
    public void stop(){
        this.status = "stop";
    }

    public void reset(){
        for (int i =0;i<this.number_particles;i++){
            ((Particle) this.particles.get(i)).x = 0;
            ((Particle) this.particles.get(i)).y = 0;
            ((Particle) this.particles.get(i)).status = "alive";
            ((Particle) this.particles.get(i)).vel = aleatorio(MIN_VEL,MAX_VEL);
            ((Particle) this.particles.get(i)).ang = aleatorio(0,360);
        }
    }

    public static float aleatorio(float max,float min){
        return (float)(random.nextFloat()*(max-min))+min;
    }

    public class Particle{
        private String status="alive";
        private double x = 0;
        private double y = 0;
        private float vel = aleatorio(MIN_VEL,MAX_VEL);
//      private int alpha = 255;
        private float ang = aleatorio(0,360);
    }

}