function checkInput(error, input) {
console.log(input);
try {
var result = eval(input);
if (lesson[step].data(result)) {
process.nextTick(next);
}
else {
process.nextTick(prompt);
}
}
catch (e) {
console.log(e);
process.nextTick(prompt);
}
}
function next() {
step++;
if(lesson[step]) {
lesson[step].start();
prompt();
}
else {
try {
lesson = require('./lessons/lesson-' + lesson_no++);
console.log('Lesson over! Press any key to start the next lesson.');
step = -1;
read({raw:true}, next);
}
catch (e) {
console.log('That was the last lesson! Congratulations etc.');
console.log('Press any key to quit');
read({raw: true}, process.exit);
}
}
}