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#ifndef AL_LISTENER_H
#define AL_LISTENER_H
#include <array>
#include <atomic>
#include "AL/al.h"
#include "AL/alc.h"
#include "vecmat.h"
enum class DistanceModel;
struct ALlistenerProps {
std::array<ALfloat,3> Position;
std::array<ALfloat,3> Velocity;
std::array<ALfloat,3> OrientAt;
std::array<ALfloat,3> OrientUp;
ALfloat Gain;
std::atomic<ALlistenerProps*> next;
};
struct ALlistener {
std::array<ALfloat,3> Position{{0.0f, 0.0f, 0.0f}};
std::array<ALfloat,3> Velocity{{0.0f, 0.0f, 0.0f}};
std::array<ALfloat,3> OrientAt{{0.0f, 0.0f, -1.0f}};
std::array<ALfloat,3> OrientUp{{0.0f, 1.0f, 0.0f}};
ALfloat Gain{1.0f};
std::atomic_flag PropsClean;
/* Pointer to the most recent property values that are awaiting an update.
*/
std::atomic<ALlistenerProps*> Update{nullptr};
struct {
alu::Matrix Matrix;
alu::Vector Velocity;
ALfloat Gain;
ALfloat MetersPerUnit;
ALfloat DopplerFactor;
ALfloat SpeedOfSound; /* in units per sec! */
ALfloat ReverbSpeedOfSound; /* in meters per sec! */
ALboolean SourceDistanceModel;
DistanceModel mDistanceModel;
} Params;
ALlistener() { PropsClean.test_and_set(std::memory_order_relaxed); }
};
void UpdateListenerProps(ALCcontext *context);
#endif
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