asdf

index.js

var ball = {
  x : 150, y : 200,
  dir : {
    x: 1, y:1
  }
}

var wall = {x: 400, y:400}

var score = 0;

function setup() {
  createCanvas(400, 400);
  background(220);
  
  
  ball.dir.x = random(2)-1;
  ball.dir.y = random(2)-1;
}

function draw() {
  background(220);
  textSize(32);
    text('Score: ' + score, 10, 30);
  rect(10, mouseY-30, 10, 60);
  circle(ball.x, ball.y, 10);
  
  if(ball.x > wall.x) ball.dir.x = -ball.dir.x
  if(ball.y > wall.y) ball.dir.y = -ball.dir.y
  if(ball.y <      0) ball.dir.y = -ball.dir.y
  
  
  if(ball.x < 10){
    ball.x = random(wall.x)
    ball.y = random(wall.y)
    ball.dir.x = random(2)-1;
    ball.dir.y = random(2)-1;
  }
  
  if(ball.x<20 && ball.y < mouseY+30 && ball.y > mouseY-30) {
    ball.dir.x = -ball.dir.x;
    score = score +1 ;
    
  }
  
  ball.x = ball.x+5*ball.dir.x;
  ball.y = ball.y+5*ball.dir.y;
  
}