Reto mouredev#44 - javascript

Retos/Reto #44 - ADIVINANZAS MATEMÁTICAS [Media]/javascript/othamae.js

@@ -0,0 +1,115 @@
+/*
+ * Crea un juego interactivo por terminal en el que tendrás que adivinar 
+ * el resultado de diferentes
+ * operaciones matemáticas aleatorias (suma, resta, multiplicación 
+ * o división de dos números enteros).
+ * - Tendrás 3 segundos para responder correctamente.
+ * - El juego finaliza si no se logra responder en ese tiempo.
+ * - Al finalizar el juego debes mostrar cuántos cálculos has acertado.
+ * - Cada 5 aciertos debes aumentar en uno el posible número de cifras 
+ *   de la operación (cada vez en un operando):
+ *   - Preguntas 1 a 5: X (entre 0 y 9) operación Y (entre 0 y 9)
+ *   - Preguntas 6 a 10: XX (entre 0 y 99) operación Y (entre 0 y 9)
+ *   - Preguntas 11 a 15: XX operación YY
+ *   - Preguntas 16 a 20: XXX (entre 0 y 999) operación YY
+ *   ...
+ */
+
+const readline = require('readline')
+const rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout
+})
+
+playGame()
+
+function playGame(){
+    console.log('Welcome to the math game!')
+    console.log('You have 3 seconds to answer...')
+    console.log('Good luck!!')
+    game(0)
+
+}
+
+function game(points){
+    const [number1,operation, number2] = getQuestion(points)
+    const question = `${number1} ${operation} ${number2}`
+    const result =getResult(number1, operation, number2)
+
+    const timer = setTimeout(() => {
+        console.log('\nTime is up! Game over :(');
+        console.log(`You answered ${points} questions correctly`);
+        rl.close();
+    }, 3000)
+
+    rl.question(`What is the result of the operation: ${question} = `, (answer) => {
+         console.log(result)
+         clearTimeout(timer);
+        if (parseInt(answer) === result){
+            console.log('Correct answer')
+            points++
+            console.log(`You have ${points} points`)
+            game(points)
+        }
+        else {
+            console.log('Game over :(')
+            console.log(`You answered ${points} questions correctly`)
+            rl.close()
+        }
+    })
+
+}
+
+// helper functions
+function getOperator(){
+    const operations = ['+','-','*','/'];
+    return operations[Math.floor(Math.random()*operations.length)];
+}
+
+function getOneDigitNumber(){
+    return Math.floor(Math.random()*10);
+}
+
+function getTwoDigitNumber(){
+    return Math.floor(Math.random()*100);
+}
+
+function getThreeDigitNumber(){
+    return Math.floor(Math.random()*1000);
+}
+
+function getQuestion(points){   
+    let number1
+    let number2
+    if (points< 5 ){
+     number1 = getOneDigitNumber()
+     number2 = getOneDigitNumber()
+    } else if (points< 10){
+        number1 = getTwoDigitNumber()
+        number2 = getOneDigitNumber()
+    } else if (points< 15){
+        number1 = getTwoDigitNumber()
+        number2 = getTwoDigitNumber()
+    } else if (points< 20){
+        number1 = getThreeDigitNumber()
+        number2 = getTwoDigitNumber()
+    } else if (points< 25){
+        number1 = getThreeDigitNumber()
+        number2 = getThreeDigitNumber()
+    }
+    const operation = getOperator()
+    return [number1, operation, number2]
+}
+
+function getResult(number1, operator, number2){
+    if (operator === '+'){
+        return number1 + number2
+    } else if (operator === '-'){
+        return number1 - number2
+    } else if (operator === '*'){
+        return number1 * number2
+    } else if (operator === '/'){
+        return Math.round(number1 / number2)
+    }
+}
+