preloading many sounds (in array)?

Answers

• xna

  September 2017

  not like this:

  var key53;
  var key54;
  var key55;
  var key56;
  var key57;
  var key58;
  var key59;
  var key60;
  var key61;
  var key62;
  var key63;
  var key64;
  var key65;
  var key66;
  var key67;
  var key68;
  var key69;
  var key70;
  var key71;
  var key72;
  var key73;
  var key74;
  var key75;
  var key76;
  var key77;
  
  function preload() {
      for(var i=53; i<77; i++){
          "key"+i = loadSound("keys/"+i+".wav")
    }
  }
  
• Chrisir

  September 2017

  Look at array in the reference:
• xna

  September 2017

  I know about arrays, but the issue is here "key"+i =
• GoToLoop

  September 2017 edited September 2017 Answer ✓

  • In programming, everything starts by describing the problem to solve. :-B
  • In this particular problem, you need to load audio files from a subfolder called "keys/".
  • Let's create a const variable for it then: const FOLDER = 'keys/'.
  • All of those files have extension ".wav". Then another const for it: const EXT = '.wav'.
  • Seems like the 1st ".wav" file you wish to load is named "53.wav", is that right? :-/
  • If so, we've got ourselves another const. Let's call it: const INDEX_START = 53.
  • Following the same logic, last file to load is "77.wav", right?: const INDEX_END = 77.
  • Now let's calculate how many files to load then: const INDEX_TOTAL = 1 + INDEX_END - INDEX_START.
  • Finally, let's declare a variable for an Array which is about to hold all of those p5.SoundFile object references: :-bd const sounds = Array(INDEX_TOTAL).
  • Now we can define a preload() for all of those pre-defined information: \m/

  const FOLDER = 'keys/', EXT = '.wav',
        INDEX_START = 53, INDEX_END = 77,
        INDEX_TOTAL = 1 + INDEX_END - INDEX_START,
        sounds = Array(INDEX_TOTAL);
  
  function preload() {
    for (let i = 0; i < INDEX_TOTAL; ++i)
      sounds[i] = loadSound(FOLDER + (i + INDEX_START) + EXT);
  }
  
• xna

  September 2017

  @GoToLoop that's amazing. Thanks for this detailed answer. In the for loop, what is the "let" doing?
• GoToLoop

  September 2017 Answer ✓

  https://Developer.Mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let