update bullet so it actually works

Moved the addSourceDirectory for physics/Bullet into the Engine/Source/CMakeLists.txt file that way it can actually appear where we expect it to in the solution explorer.

Engine/lib/bullet/examples/TinyAudio/b3ReadWavFile.h

@@ -0,0 +1,53 @@
+#ifndef B3_READ_WAV_FILE_H
+#define B3_READ_WAV_FILE_H
+
+#include "Bullet3Common/b3AlignedObjectArray.h"
+#include <stdio.h>
+#include <string.h>
+
+struct b3WavTicker
+{
+	b3AlignedObjectArray<double> lastFrame_;
+	bool finished_;
+	double time_;
+	double rate_;
+};
+
+class b3ReadWavFile
+{
+	bool byteswap_;
+	bool wavFile_;
+	unsigned long m_numFrames;
+	unsigned long dataType_;
+	double fileDataRate_;
+	FILE *fd_;
+	unsigned long dataOffset_;
+	unsigned int channels_;
+	bool m_machineIsLittleEndian;
+
+public:
+	b3ReadWavFile();
+	virtual ~b3ReadWavFile();
+
+	b3AlignedObjectArray<double> m_frames;
+
+	bool getWavInfo(const char *fileName);
+
+	void normalize(double peak);
+
+	double interpolate(double frame, unsigned int channel) const;
+	double tick(unsigned int channel, b3WavTicker *ticker);
+
+	void resize();
+
+	b3WavTicker createWavTicker(double sampleRate);
+
+	bool read(unsigned long startFrame, bool doNormalize);
+
+	int getNumFrames() const
+	{
+		return m_numFrames;
+	}
+};
+
+#endif  //B3_READ_WAV_FILE_H