towards sparkle

App/Sparkle.cpp

@@ -0,0 +1,49 @@
+/*
+ * Sparkle.cpp
+ *
+ *  Created on: Dec 16, 2018
+ *      Author: abody
+ */
+
+#include "Sparkle.h"
+
+Sparkle::Sparkle()
+{
+}
+
+Sparkle::~Sparkle() {
+}
+
+void Sparkle::Start(Pixel_t *target, Pixel_t color, Pixel_t fadeSpeed)
+{
+	m_target = target;
+	*target = color;
+	m_fadeSpeed = fadeSpeed;
+}
+
+bool Sparkle::Step()
+{
+	Pixel_t current = *m_target;
+	uint8_t remaining = 3;
+
+	if(current.b > m_fadeSpeed.r )current.r -= m_fadeSpeed.r;
+	else {
+		current.b = 0;
+		--remaining;
+	}
+
+	if(current.g > m_fadeSpeed.g )current.g -= m_fadeSpeed.g;
+	else {
+		current.g = 0;
+		--remaining;
+	}
+
+	if(current.b > m_fadeSpeed.b )current.b -= m_fadeSpeed.b;
+	else {
+		current.b = 0;
+		--remaining;
+	}
+
+	return remaining != 0;
+
+}