Add TrSequence<> (profezzorn#300)

ProffieOS.ino

@@ -504,6 +504,7 @@ struct is_same_type<T, T> { static const bool value = true; };
 #include "transitions/select.h"
 #include "transitions/extend.h"
 #include "transitions/center_wipe.h"
+#include "transitions/sequence.h"
 
 #include "styles/legacy_styles.h"
 //responsive styles

transitions/sequence.h

@@ -0,0 +1,43 @@
+#ifndef TRANSITIONS_SEQUENCE_H
+#define TRANSITIONS_SEQUENCE_H
+
+#include "random.h"
+
+// Usage: TrSequence<TR1, TR2, ...>
+// TR1, TR2: TRANSITION
+// return value: TRANSITION
+// transition options used in sequence
+
+template<class... TRANSITION>
+class TrSequence {
+public:
+  void begin() {
+    begin_ = true;
+  }
+  void run(BladeBase* blade) {
+    if (begin_) {
+      begin_ = false;
+      n_ = (n_ + 1) % sizeof...(TRANSITION);
+      selected_ = transitions_.get(n_);
+      selected_->begin();
+    }
+      selected_->run(blade); 
+  }
+
+  RGBA getColor(const RGBA& a, const RGBA& b, int led) {
+    return selected_->getColor(a, b, led);
+  }
+  bool done() {
+    if (begin_) return false;
+    if (!selected_) return true;
+    return selected_->done();
+  }
+
+private:
+  bool begin_ = false;
+  int n_ = -1;
+  PONUA TrHelper<TRANSITION...> transitions_;
+  TransitionInterface* selected_ = nullptr;
+};
+
+#endif