began putting everything together

code/particles/MyObservation.h

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+#ifndef MYOBSERVATION_H
+#define MYOBSERVATION_H
+
+#include "../frank/WiFiObservation.h"
+#include "../frank/BeaconObservation.h"
+#include "../toni/BarometerObservation.h"
+#include "../lukas/StepObservation.h"
+#include "../lukas/TurnObservation.h"
+
+/**
+ * all available sensor readings
+ */
+struct MyObservation {
+
+	/** wifi observation */
+	WiFiObservation wifi;
+
+	/** barometer observation data (if any) */
+	BarometerObservation* barometer = nullptr;
+
+	/** beacon observation data */
+	BeaconObservation beacons;
+
+    /** step observation data (if any) */
+    StepObservation* step = nullptr;
+
+    /** turn observation data (if any) */
+    TurnObservation* turn = nullptr;
+
+	/** timestamp of the youngest sensor data that resides within this observation. used to detect the age of all other observations! */
+	uint64_t latestSensorDataTS = 0;
+
+	/** ctor */
+	MyObservation() {
+//		reset();
+	}
+
+//	/** set all observations to null */
+//	void reset() {
+//		//delete wifi; wifi = nullptr;
+//		delete barometer; barometer = nullptr;
+//		delete beacons; beacons = nullptr;
+//        //delete step; step = nullptr;
+//        //delete turn; turn = nullptr;
+//	}
+
+};
+
+#endif // MYOBSERVATION_H