PONG - OpenProcessing

mySketch
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float xPos, yPos; //float is a decimal point number
float xSpeed, ySpeed;
int lives, score; //whole numbers
color ballColor; //AMERICA 
​
void setup(){
  size(500, 500);
  background(150, 0, 150);
  xSpeed = 6;
  ySpeed = 3;
  xPos = 100;
  yPos = 250;
  lives = 3;
  ballColor = randomColor();
}
​
void draw(){
  fill(150, 0, 150, 20); //r, g, b, alpha
  rect(0, 0, width, height); //are screen width, height
  
  //Paddle
  fill(ballColor);
  rect(width - 30, mouseY - 50, 30, 100, 10); //5th number rounds the corners
  
  //ball
  xPos += xSpeed; //xPos = xPos + xSpeed;
  yPos += ySpeed;
  noStroke();
  fill(ballColor);
  ellipse(xPos, yPos, 30, 30);
  
  // UI, UX, UIX: user interface
  text("score: " + score, 10, 20);
  text("Lives: " + lives, 10, 40);
  
  //hitbox : checking if paddle is hit
  if(xPos > width - (15 + 30) && yPos < mouseY + 15 + 50 && yPos > mouseY - 15 - 50){
    xSpeed = -xSpeed;
    score = score + 1; //score++; score += 1;
  }
  
  // || mean or in computer, && means and
  if(xPos < 0 + 15){
    xSpeed = -xSpeed; // xSpeed *= -1, xSpeed = xSpeed * -1;
  }
  if(yPos > 500 - 15 || yPos < 0 + 15){
    ySpeed = -ySpeed; // xSpeed *= -1, xSpeed = xSpeed * -1;
  }
  if(xPos > 500 - 15){
    reset();
  }
}
​
void reset(){
  if(lives > 1){
    lives = lives - 1; // lives -= 1; lives--;
    xPos = 100;
    yPos = 250;
  }
  else{
    lives--;
    exit();
  }
}
​
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color randomColor(){
  color newCol = color(random(100, 255), random(100, 255), random(100, 255));
  return newCol;
}
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