POC test

gistfile1.js

var stdin = process.stdin;

var map = [
  "                  ┌───────┐     ",
  "    ┌───────┐     │·······│     ",
  "    │·······│     │·······│     ",
  "    │·······│     │·······│     ",
  "    │········░░░░░········│     ",
  "    │·······│     │·······│     ",
  "    │·······│     │·······│     ",
  "    └───────┘     └───────┘     "
];

var x = 9;
var y = 5;

function canMoveTo(x, y) {
  var ch = map[y - 1][x - 1];
  return ch == "·" || ch == "░";
}

function cls() {
  process.stdout.write("\u001b[2J\u001b[0;0H");
}

function cursorTo(x, y) {
  process.stdout.write("\u001b[" + y + ";" + x + "H");
}

function drawCharacter() {
  cursorTo(x, y);
  process.stdout.write("@");
  cursorTo(x, y);
}

function onMove(deltaX, deltaY) {
  if (!canMoveTo(x + deltaX, y + deltaY))
    return;
  moveCharacter(deltaX, deltaY);
}

function moveCharacter(deltaX, deltaY) {
  cursorTo(x, y);
  process.stdout.write(map[y - 1][x - 1]);
  x += deltaX;
  y += deltaY;
  drawCharacter();
}


process.stdout.write("\u001b[2J\u001b[0;0H");
for (var i = 0; i < map.length; i++) {
  console.log(map[i]);
}
drawCharacter();

// without this, we would only get streams once enter is pressed

stdin.setRawMode(true);

// resume stdin in the parent process (node app won't quit all by itself
// unless an error or process.exit() happens)
stdin.resume();

// switch from binary to something more useful
stdin.setEncoding('utf8');

// on any data into stdin
stdin.on( 'data', function(key) {
  //moveTo(0, 0);
  //process.stdout.write("" + key.charCodeAt(0));
  //process.stdout.write( key );
  // ctrl-c ( end of text )
  if (key === "\u001b[A") {
    onMove(0, -1);
  } else if (key === "\u001b[B") {
    onMove(0, 1);
  } else if (key === "\u001b[C") {
    onMove(1, 0);
  }  else if (key === "\u001b[D") {
    onMove(-1, 0);
  }


  if (key === "\u001b") {
    cls();
    process.exit();
  }
  // write the key to stdout all normal like
  // process.stdout.write(key);
});

// var util = require('util');
// util.print("\u001b[2J\u001b[0;0H");

process.stdout.write("\u001b[5;5H");
process.stdout.write("$");