Modify a text file: $/Project5_rashid_.pde

$/Project5_rashid_.pde

//// Billiard table, with array of moving balls.
String title="Bouncing Balls.";
String subtitle="Array of Ball objects";
String author="Farah Rashid";
String hint = "Press 1, 2, 3, etc. reset a ball.";

// Global declaration for the Ball array.
int arraysize=20;
Ball[] b = new Ball[arraysize];
int many=10;
boolean debug=false;

//// Assume size(600,400) for 300x500 table.

float left=50, top=50, right=550, bottom=350, bump=25;
float center=int(left+right)/2, middle=int(top+bottom)/2;
float spot = int(left+center)/2, wide=right-left, high= bottom-top;
int score=0, sweeps=0, frames=0, games=0;

//BALL
Ball red, yellow, blue;
Ball zero, one, two, three, four, five;

void setup() {
  //// Setup:  600x400 (for 300x500 table).
  size(600,400);
  frameRate(30);
  newGame();
  reset();
}
void newGame() {
  ++games;
  score=sweeps=frames=0;
  init();
  b[0].reset();
}
void init() {
  many = int( random(7,17) );
  subtitle = "Array of "+many+" Ball objects.";
  ////  Initialize .
  b[0] = new Ball( 0, 255,255,255 ); 
 
  b[0].c = color(255,255,255);  // WHITE cueball
 
  ////  Initialize the other balls.
  for (int i=1; i<many; i=i+1) {
 b[1]= new Ball(1, 255,0,0); 
  b[2]= new Ball(2, 255,255,0 );
  b[3]= new Ball( 3, 0,255,255 );
  b[4]=    new Ball( 4, 0,255,0 );
  b[5]=    new Ball( 5, 255,0,255 );
     
  }
}

void reset() {
  //// Randomize the ball positions & speeds.
  b[1].reset();
  b[2].reset();
  b[3].reset();
  b[4].reset();
  b[5].reset();
}

void draw() {
  background( 250,250,200 );    // Tan floor.
  drawTable();
  messages();
  drawBalls();
  if (score>=100) {
    textSize(30);
    text( "G A M E   O V E R", width/3, height/2 );
    textSize(12);
    text( "    Press 'g'  key for new game.", width/3, 30+height/2 );
    return;
  }
  // Check if any balls left
  int n = countAll();
  if (n<1) {
    ++ sweeps;
    reset();
  }
  //
  if (keyPressed) return;      // No action when a key is presses.
  ++frames;
  moveBalls();
  b[0].move();
}
int countAll() {
  int m=0;
  if ( ! b[1].dead) m=m+1;
  if ( ! b[2].dead) m=m+1;
  if ( ! b[3].dead) m=m+1;
  if ( ! b[4].dead) m=m+1;
  if ( ! b[5].dead) m=m+1;
  return m;
}
void  drawBalls() {
  b[0].show();

//// Draw each ball.
b[0].show();
b[1].show();
b[2].show();
b[3].show();
b[4].show();
b[5].show();

}
  
void  moveBalls() {
  //// Move each ball
  b[1].move();
  b[2].move();
  b[3].move();
  b[4].move();
  b[5].move();
  //// Collision with b[0] kills the ball.
  if (hit(b[0],b[1]))   { ++score; b[1].kill(); }
  if (hit(b[0],b[2]))   { ++score; b[2].kill(); }
  if (hit(b[0],b[3])) { ++score; b[3].kill(); }
  if (hit(b[0],b[4]))  { ++score; b[4].kill(); }
  if (hit(b[0],b[5]))  { ++score; b[5].kill(); }

//
}
boolean hit( Ball p, Ball q ) {
  // Return true iff p is near q;
  float near=50;
  float d = dist( p.x,p.y, q.x,q.y );
  if (dist( p.x,p.y, q.x,q.y ) < near) return true;
  else return false;
}

void  drawTable() {
  //// Draw 500x300 green light-table, with thick brown border, on cyan backgroud.
  fill( 100,200,100 );          // Light-green table.
  stroke( 100,50,50 );          // Brown (wood) rail.
  strokeWeight(25);
  rectMode(CORNERS);
  rect(left,top, right,bottom);        // Table (with rail);
  rectMode(CORNER);
  strokeWeight(1);
}
void messages() {
  fill(0);
  textSize(24);
  text( title, width/3, 20);
  textSize(12);
  text( subtitle, width/3, 36);
  text( "Author: "+author, width*3/4, height-10 );
  fill( 255,0,0);
  textSize(16);
  text( "SCORE:  "+score, 420, 15 );
  textSize(12);
  text( "(g for new game)", 420, 30 );
  fill( 0,0,200);
  String help1="Cueball kills other balls!";
  String help2=  "Press 1, 2, 3, etc. reset a ball.";
  text( help1, left+10, height-25);
  text( help2, left+10, height-10);
}

/////////////////  CLASSES

class Ball {
  //// Billiard ball.
  int n;
  color c;
  float x,y;    // Position of this ball.
  float xx,yy;  // Velocity (pixels per frame).
  boolean dead=false;
  
  //// CONSTRUCTORS ////
  Ball( int number, int r, int g, int b ) {
    //// 4-arg constructor sets number & color;
    n= number;
    c=  color( r, g, b );
  }

//// METHODS  ////
  void move() {
    if (dead) return;
    //// Move ball by (xx,yy)
    x=  x + xx;
    y=  y + yy;
    // Bounce off walls.
    if (x < left+bump)   { xx = -xx;   x=left+2*bump; }
    if (x > right-bump)  { xx = -xx;   x=right-2*bump; }
    if (y < top+bump)    { yy = -yy;   y=top+2*bump; }
    if (y > bottom-bump) { yy = -yy;   y=bottom-2*bump; }
  }
  void show() {
    //// Draw at (x,y)
    fill(c);
    ellipseMode(CENTER);
    ellipse(x,y, 30,30);        // Diameter is 30.
    fill(0);
    text(n, x-5, y+5);
    if(debug) text(int(xx)+"\n"+int(yy), x-5,y+35);
  }
  //
  void kill() {
    dead=true;
    x=  40;
    y=  random( top+30, bottom-30 );
    xx=0;
    yy=0;
    background(c);
  }
  void restore() {
    dead=false;
    reset();
  }
  void reset() {
    if (dead) return;
    x=  random( left+30, center-100 );
    y=  random( top+30, bottom-30 );
    xx= random( 2, 5 );
    yy= random( 1, 3 );
  }
 
  boolean clicked() {    // true iff clicked nearby.
    if ( dist(x,y, mouseX,mouseY) < 40) return true;
    else return false;
  }
}// END OF class Ball //

//////// EVENT HANDLERS ////////
void keyPressed() {
  if (key=='g') newGame();   //// "g" new game.
  if (key=='q') exit();       //// "q" quits game.

int n = key - '0';      // n = number of the key.
                          // n=1 for '1', n=2 for '2', etc.
  ////  "Reset a ball by pressing key 1, 2, 3, etc.
 
 if (key=='1') b[1].reset();
 if (key=='2') b[2].reset();
 if (key=='3') b[3].reset();
 if (key=='4') b[4].reset();
 if (key=='5') b[5].reset();
}
void mousePressed() {
  if (b[0].clicked()) {
    // cueball was clicked.
  }
  if (b[1].clicked()) b[1].reset();
    if (b[2].clicked()) b[2].reset();
  if (b[3].clicked()) b[3].reset();
  if (b[4].clicked()) b[4].reset();
  if(b[5].clicked()) b[5].reset();
}