Add openness CC control for hi-hats.distance_openness

1 files changed, 13 insertions, 0 deletions

diff --git a/src/instrumentstate.h b/src/instrumentstate.h
new file mode 100644
index 0000000..8be4581
--- /dev/null
+++ b/src/instrumentstate.h
@@ -0,0 +1,13 @@
+#pragma once
+
+//! Tracks the MIDI state of an instrument during play.
+struct InstrumentState {
+
+    // Physical position applied to the next hit.
+    // 0.0-1.0, where 0.0 is the middle and 1.0 is closest to the rim.
+    float position = 0.0;
+
+    // Openness (typically for a hi-hat).
+    // 0.0-1.0, where 0.0 is closed and 1.0 is fully open.
+    float openness = 0.0;
+};
\ No newline at end of file