//Make a brick breaker game
int rows = 5;
int columns = 10;
boolean[] bricks = new boolean [rows * columns];
float ballx = 0;
float bally = 0;
float ballmovex = 2.5;
float ballmovey = -3;
//set up screen
void setup() {
  size(500,500);
  smooth();
  setupBricks();
}

void setupBricks() {
  for (int i = 0; i < rows*columns; i++) {
    bricks [i] = true;
  }
  ballx = width/2;
  bally = height - 50;
}

//draw paddle at mousex
void draw() {
  background(0);
  fill(255);
  rectMode(CENTER);
  rect(mouseX, height, 50,20);
  
  //draw bricks
  rectMode(CORNER);
  for (int y =0; y<rows; y++) {
    for (int x =0; x<columns; x++){
     if(bricks[columns*y+x]){
       rect(width/columns*x, 20 * y, width/columns, 20);
     }
    }
  }
  //draw ball
  ellipse(ballx, bally, 10,10);
  
  //move ball
  ballx = ballx+ballmovex;
  bally = bally+ballmovey;
  
  //collision against walls
  if (ballx >width || ballx <0) {
    ballmovex = -ballmovex;
  }
  
  if (bally < 0) {
    ballmovey = -ballmovey;
  }
  
  //ball left scene
  if(bally > height) {
    setupBricks();
  }
  
  //collision against paddle
  if (bally > height-10) {
    if (ballx >mouseX - 25 && ballx < mouseX + 25){
      ballmovey = -ballmovey;
    }
  }
  
  //collision against bricks
  if (bally <rows*20) {
    int inBrickX = (int)(ballx / (width / columns));
    int inBrickY = (int)(bally / 20);
    if(bricks[inBrickX+columns*inBrickY]){
      bricks[inBrickX+columns*inBrickY] = false;
      ballmovey = -ballmovey;
    }
  }

}