Main.jack

// This file is part of nand2tetris, as taught in The Hebrew University, and
// was written by Aviv Yaish. It is an extension to the specifications given
// [here](https://www.nand2tetris.org) (Shimon Schocken and Noam Nisan, 2017),
// as allowed by the Creative Common Attribution-NonCommercial-ShareAlike 3.0
// Unported [License](https://creativecommons.org/licenses/by-nc-sa/3.0/).

/**
  * In Jack programs, the first function that runs is always the function "main"
  * from the class "Main".
  * You can include as many classes and functions as you want.
  */
class Main {
  function void main() {
    var bool start;
    var char key;
    var Pong game;
    var bool exit;

    let start = false;

    do Screen.clearScreen();
    do Output.moveCursor(6, 26);
    do Output.printString("Pong Game");

    // Print the instructions
    do Output.moveCursor(10, 14);
    do Output.printString("Player 1 (Left): W for up and S for down.");
    do Output.moveCursor(12, 4);
    do Output.printString("Player 2 (Right): uparrow for up and downarrow for down.");
    do Output.moveCursor(15, 8);
    do Output.printString("The score is displayed at the top of the screen.");

    do Output.moveCursor(18, 20);
    do Output.printString("Press any key to start");

    while (start = false) {
      let key = Keyboard.keyPressed();
      if (~(key = 0)) {
        let start = true;
      }
    }

    let game = Pong.new();
    let exit = false;
    while (exit = false) {
      do game.displayScore();
      do game.displayStart();
      let exit = game.run();
      do game.resetBall();
    }
    do game.displayEnd();
    do game.dispose();
    return;
  }

  // Your code goes here!
}