lib.clear("green");

lib.drawRect(100, 100, 100, 100, "blue");

lib.println("hello world!");

let playerX = 0;

function loop(deltaT) {

    playerX += 100 * deltaT;

    lib.drawRect(playerX, 200, 50, 50, "red");
}

lib.startGameLoop(loop);

return 5;