var x = 200;

var y = 200;

var utility1 = 0;

var uX = 0;

var uY = 300;

var better = 1;

var I = false;

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  fill("blue");

  textSize(15);

  text ("$$ " + score, 15,20);

  fill("blue");

  ellipse(x,y,25,25);

  stroke(0);

  noFill();

  rect(uX,uY,150,100);

  text('BUY', uX + 50, uY + 50);

}

function mouseClicked(){

 if (mouseX > x - 10 && mouseX < x + 10 && mouseY > y - 10 && mouseY < y + 10){

score = score + better;

}

  if (mouseX > uX - 50 && mouseX < x + 50 && mouseY > uY - 75 && mouseY < uY + 75){

      if (score < 50){

         if (I === true){

      better = 2;

    }

        else{

  better = 1;

        }

}

    else{

  score = score - 50;

  better = 2;

  I = true;

    }

}

}