Axiom QuickServe

// For instructions, see https://www.zachtronics.com/quickserve/

let lastKey;
let keyBuffer;

function getName()
{
	return 'Test Server';
}

function onConnect()
{
	// Reset the server variables when a new user connects:
	lastKey = '';
	keyBuffer = loadData();
}

function onUpdate()
{
	// It is safe to completely redraw the screen during every update:
	clearScreen();

// Draw the full color palette:
	drawBox(10, 1, 1, 54, 3);
	drawText('COLOR REFERENCE', 14, 21, 1);
	for (let i = 1; i <= 17; i++)
	{
		const text = (i < 10) ? ('0' + i) : i;
		drawText(text, i, i * 3, 2);
	}

// Show the most recently pressed key:
	drawBox(10, 1, 4, 7, 5);
	drawText('INPUT', 14, 2, 4);
	drawText('000', 5, 3, 6);
	drawText(lastKey, 17, 6 - lastKey.length, 6);

// Draw the full set of font characters:
	drawBox(10, 9, 4, 46, 12);
	drawText('FONT REFERENCE', 14, 25, 4);

drawText('!"#%&\'()*+,-./:;?[\\]^\`™', 16, 11, 5);
	drawText('0123456789', 16, 11, 6);
	drawText('ABCDEFGHIJKLMNOPQRSTUVWXYZ', 16, 11, 7);
	drawText('abcdefghijklmnopqrstuvwxyz', 16, 11, 8);
	drawText('─ ═ ║ ╔ ╗ ╚ ╝ ╠ ╣ ╦ ╩ ╬', 16, 11, 10);
	drawText('▀ ▄ █ ▌ ▐ ▖ ▗ ▘ ▙ ▛ ▜ ▝ ▟ < > ▲ ▼', 16, 11, 12);
	drawText('☺ ☻ ♠ ♣ ♥ ♦ ⚉', 16, 11, 14);

// Draw a persisted and editable text field:
	drawBox(10, 1, 16, 54, 3);
	drawText('PERSISTENCE TEST', 14, 20, 16);
	drawText(keyBuffer + '█', 17, 3, 17);
}

function onInput(key)
{
	// Remember the last key pressed:
	lastKey = key.toString();

// Update the persisted text field:
	if (key == 8 && keyBuffer.length > 0)
	{
		keyBuffer = keyBuffer.substring(0, keyBuffer.length - 1);
		saveData(keyBuffer);
	}
	else if (key >= 32 && key < 127 && keyBuffer.length < 49)
	{
		keyBuffer = keyBuffer + String.fromCharCode(key);
		saveData(keyBuffer);
	}
}