// Universe.java

import java.util.*;

public class Universe {
  static int xg = 0, yg = 4;
  static int height = 25, width = 25;

  static class Particle {
    String name;
    int pos[] = {0, 0};
    int dot[] = {0, 0};
    int acc[] = {0, 0};
    
    Particle(String n, int px, int py,
             int vx, int vy) {
      name = n; pos[0] = px; pos[1] = py;
      dot[0] = vx; dot[1] =vy;
    }
    Particle(String n, int px, int py) {
      this(n,px,py,0,0);
    }
    int[] pos() { return pos; }
    int[] pos(int x, int y) {
      pos[0] = x; pos[1] = y;
      return pos;
    }
    int[] vel() { return dot; }
    public int[] vel(int x, int y) {
      dot[0] = x; dot[1] = y;
      return dot;
    }
    int[] acc() { return acc; }
    int[] acc(int x, int y) {
      acc[0] = x; acc[1] = y;
      return acc;
    }
    void step() {
      pos[0] += dot[0]; pos[1] += dot[1];
      dot[0] += acc[0]; dot[1] += acc[1];
    }
    void status1() {
      System.out.print(name + "'s P:(" +
                       pos[0] + ", " + pos[1]
                       + ")  V:(" +
                       dot[0] + ", " + dot[1]
                       + ")  A:(" +
                       acc[0] + ", " + acc[1] + ") ");
      if (iscrashed()) {
        System.out.println(";");
        System.out.print("        " + name + " crashed ");
      }
    }
    void status() {
      status1();
      System.out.println();
    }
    boolean iscrashed() {
      return( (pos[0] < width) && (pos[1] > height));
    }
  }
  
  static class Rocket extends Particle {
    int motor[] ={0, 0};
    
    public Rocket(String n, int x0, int y0,
                  int vx, int vy, int mx, int my) {
      super(n, x0, y0, vx, vy);
      motor(mx, my);
    }
    int[] motor() { return motor; }
    int[] motor(int x, int y) {
      motor[0] = x; motor[1] = y;
      acc[0] = xg + x; acc[1] = yg + y;
      return motor;
    }
    void status() {
      super.status1();
      System.out.println(" M:(" +
                         motor[0] + ", " +
                         motor[1] + ") ");
    }
  }
  
  static void main(String argv[]) {
    Particle[] ps = new Particle[6];

    ps[0] = new Particle(new String("p1"),4,3,2,5);
    ps[1] = new Particle("p2",0,0,0,1);
    ps[2] = new Particle("p3",1,1,9,4);
    ps[3] = new Rocket("r1",2,3,4,3,2,1);
    ps[4] = new Rocket("r2",7,5,2,1,7,6);
    ps[5] = new Rocket("r3",2,4,4,2,2,3);

    for (int t=0; t<5; t++) {
      for(int i=0; i<6; i++) {
        ps[i].status();
        ps[i].step();
      }
    }
  }
}