Fix Audio Clicky sub-feature (#2784)

* Fix Audio Clicky feature

* Add to features

1 files changed, 72 insertions, 0 deletions

diff --git a/quantum/process_keycode/process_clicky.c b/quantum/process_keycode/process_clicky.c
new file mode 100644
index 000000000..2b9d8a0f7
--- /dev/null
+++ b/quantum/process_keycode/process_clicky.c
@@ -0,0 +1,72 @@
+#include "audio.h"
+#include "process_clicky.h"
+
+#ifdef AUDIO_CLICKY
+
+#ifdef AUDIO_CLICKY_ON
+bool clicky_enable = true;
+#else // AUDIO_CLICKY_ON
+bool clicky_enable = false;
+#endif // AUDIO_CLICKY_ON
+#ifndef AUDIO_CLICKY_FREQ_DEFAULT
+#define AUDIO_CLICKY_FREQ_DEFAULT 440.0f
+#endif // !AUDIO_CLICKY_FREQ_DEFAULT
+#ifndef AUDIO_CLICKY_FREQ_MIN
+#define AUDIO_CLICKY_FREQ_MIN 65.0f
+#endif // !AUDIO_CLICKY_FREQ_MIN
+#ifndef AUDIO_CLICKY_FREQ_MAX
+#define AUDIO_CLICKY_FREQ_MAX 1500.0f
+#endif // !AUDIO_CLICKY_FREQ_MAX
+#ifndef AUDIO_CLICKY_FREQ_FACTOR
+#define AUDIO_CLICKY_FREQ_FACTOR 1.18921f
+#endif // !AUDIO_CLICKY_FREQ_FACTOR
+#ifndef AUDIO_CLICKY_FREQ_RANDOMNESS
+#define AUDIO_CLICKY_FREQ_RANDOMNESS 0.05f
+#endif // !AUDIO_CLICKY_FREQ_RANDOMNESS
+
+float clicky_freq = AUDIO_CLICKY_FREQ_DEFAULT;
+float clicky_song[][2]  = {{AUDIO_CLICKY_FREQ_DEFAULT, 3}, {AUDIO_CLICKY_FREQ_DEFAULT, 1}}; // 3 and 1 --> durations
+
+#ifndef NO_MUSIC_MODE
+extern bool music_activated;
+extern bool midi_activated;
+#endif // !NO_MUSIC_MODE
+
+void clicky_play(void) {
+#ifndef NO_MUSIC_MODE
+  if (music_activated || midi_activated) return;
+#endif // !NO_MUSIC_MODE
+  clicky_song[0][0] = 2.0f * clicky_freq * (1.0f + AUDIO_CLICKY_FREQ_RANDOMNESS * ( ((float)rand()) / ((float)(RAND_MAX)) ) );
+  clicky_song[1][0] = clicky_freq * (1.0f + AUDIO_CLICKY_FREQ_RANDOMNESS * ( ((float)rand()) / ((float)(RAND_MAX)) ) );
+  PLAY_SONG(clicky_song);
+}
+
+bool process_clicky(uint16_t keycode, keyrecord_t *record) {
+    if (keycode == CLICKY_TOGGLE && record->event.pressed) { clicky_enable = !clicky_enable; }
+
+    if (keycode == CLICKY_RESET && record->event.pressed) { clicky_freq = AUDIO_CLICKY_FREQ_DEFAULT; }
+
+    if (keycode == CLICKY_UP && record->event.pressed) {
+      float new_freq = clicky_freq * AUDIO_CLICKY_FREQ_FACTOR;
+      if (new_freq < AUDIO_CLICKY_FREQ_MAX) {
+        clicky_freq = new_freq;
+      }
+    }
+    if (keycode == CLICKY_TOGGLE && record->event.pressed) {
+      float new_freq = clicky_freq / AUDIO_CLICKY_FREQ_FACTOR;
+      if (new_freq > AUDIO_CLICKY_FREQ_MIN) {
+        clicky_freq = new_freq;
+      }
+    }
+
+
+    if ( clicky_enable ) {
+      if (record->event.pressed) {
+        stop_all_notes();
+        clicky_play();;
+      }
+    }
+    return true;
+}
+
+#endif //AUDIO_CLICKY