Diff: taiko.cpp

Revision:

10:79bb44beb08b

Child:

11:21b3b0494baa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taiko.cpp	Sun Feb 15 06:53:27 2015 +0000
@@ -0,0 +1,49 @@
+// Toolkit for Taiko no Tatsujin
+
+#include "fll.h"
+#include "taiko.h"
+
+Serial pc(USBTX, USBRX);
+
+button_t taiko2button(Taiko t)
+{
+    switch (t) {
+        case Don:
+            return CIRCLE;
+        case Ka:
+            return R1;
+    }
+    return 0;
+}
+
+TaikoSource::TaikoSource(note** ns, int s, int b)
+{
+    note_seq = ns;
+    size = s;
+    bpm = b;
+    index = 0;
+    frame_i = 0;
+}
+
+button_t TaikoSource::await()
+{
+    if (index >= size) {
+        index = 0; // XXX: remove this line (for debugging)
+        return 0;
+    }
+    
+    note* n = note_seq[index];
+    float len = n->length * (60 / (float)bpm); // note length (sec)
+    float passing = frame_i * FRAME; // passing time since the begining of this note (sec)
+    
+    frame_i++;
+    
+    button_t btn = 0;
+    if (passing < len / 2) { // in the former of this note
+        btn = taiko2button(n->taiko);
+    } else if (passing + FRAME >= len) { // final frame of this note
+        frame_i = 0;
+        index++;
+    }
+    return btn;
+}
\ No newline at end of file