HTML5 Game Development by Example : Beginner's Guide - Second Edition

Time for action – removing missed melody notes

We will store some game play statistics and use them to adjust the melody volume. We will continue with our JavaScript file:

1. First, add the following variables in the variable declaration region:

   var audiogame = {
     totalSuccessCount: 0,
   
     // storing the success count of last 5 results.
     successCount: 5,
   
     // existing code goes here.
   
   };

2. We want to not only remove a dot but also keep track of the result when we hit it by using a keyboard. Add the following code inside the hitOnLine function:

   // check if hit a music note dot for(var i in audiogame.dots) { if (lineNo === audiogame.dots[i].line && Math.abs(audiogame.dots[i].distance) < 20) { // remove the hit dot from the dots array audiogame.dots.splice(i, 1); ...