Vkm::Engine::SampleTrack< N > Struct Template Reference

A short history of where one entity was, kept by tick. More...

#include <sample_track.h>

Public Member Functions
void	record (uint32_t tick, const glm::vec3 &position, const glm::quat &rotation)
	Remember position and rotation as of tick.
bool	poseAt (double tick, glm::vec3 &position, glm::quat &rotation) const
	Where the entity was at tick, which may fall between two samples.
uint32_t	newest () const
	The newest moment remembered, or zero when nothing is.

Public Attributes
Sample	samples [N]
	Oldest first, newest last; the first count are held.
size_t	count = 0
	Samples held.

Detailed Description

template<size_t N>
struct Vkm::Engine::SampleTrack< N >

A short history of where one entity was, kept by tick.

Oldest first; answers "where was this at time t".

Template Parameters

N	How many samples to keep.

Member Function Documentation

record()

template<size_t N>

void Vkm::Engine::SampleTrack< N >::record ( uint32_t tick, const glm::vec3 & position, const glm::quat & rotation )

inline

Remember position and rotation as of tick.

A sample not newer than the newest held is dropped, keeping the order poseAt relies on.

Parameters

tick	The moment the sample describes.
position	Where the entity was then.
rotation	How it was turned then.

poseAt()

template<size_t N>

bool Vkm::Engine::SampleTrack< N >::poseAt ( double tick, glm::vec3 & position, glm::quat & rotation ) const

inline

Where the entity was at tick, which may fall between two samples.

Past either end the nearest moment is given, not extrapolated: an overshoot yanked back reads worse than holding still.

Parameters

tick	The moment wanted; a double, since a tick count outgrows a float's precision within hours.
position	Filled with the pose's position.
rotation	Filled with the pose's rotation.

Returns

False when nothing is remembered at all.

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The documentation for this struct was generated from the following file:

• net/prediction/sample_track.h