feat: fix volume control

Author: fucksophie

audioengine.cpp

@@ -40,7 +40,7 @@ void load(uintptr_t data, int length)
   {
     tsf_set_output(g_TinySoundFont, TSF_MONO, 44100, 0);
     tsf_set_max_voices(g_TinySoundFont, 200);
-    tsf_set_volume(g_TinySoundFont, volume / 100);
+    tsf_set_volume(g_TinySoundFont, volume / 100.0f);
   }
 }
 
@@ -114,7 +114,7 @@ int get_volume()
 void set_volume(int vol)
 {
   volume = vol;
-  tsf_set_volume(g_TinySoundFont, vol / 100);
+  tsf_set_volume(g_TinySoundFont, vol / 100.0f);
 }
 
 int start()

readme.md

@@ -13,7 +13,6 @@ uses [TinySoundFont](https://github.com/schellingb/TinySoundFont) and [emscripte
 ## bugs
 1. The only major bug is the fact that it's still mono! There's a ongoing TSF issue, which I've reported is still happening.
 2. Also, higher than 100-ish voice count crackles (we're using 200 voices for better blackmidi playback).. I have no clue how to fix this, maybe it's just a issue with how small the sample size for webaudio is (128 samples??).
-3. Volume control is broken. Created a issue for this on the TSF repo.
 
 ## build
 use (with emsdk activated and sourced)