Vkm::Engine::NetRewind Class Reference

Where every player was, for as long as it takes a shot to arrive. More...

#include <rewind.h>

Public Member Functions
void	record (EntityId entity, uint32_t tick, const glm::vec3 &position, const glm::quat &rotation)
	Remember where entity was on tick, in the server's own clock.
bool	poseAt (EntityId entity, double tick, glm::vec3 &position, glm::quat &rotation) const
	Where entity was at tick, which may fall between two.
void	forget (EntityId entity)
	Forget entity, for a seat changing hands.

Static Public Attributes
static constexpr size_t	HISTORY_TICKS = 64
	Ticks of history kept per player.

Detailed Description

Where every player was, for as long as it takes a shot to arrive.

A player aims at a moment already past, so the server keeps recent player poses and puts them back for one query. Only players: anything else is judged against the present and can miss for that reason.

Member Function Documentation

poseAt()

bool Vkm::Engine::NetRewind::poseAt	(	EntityId	entity,
		double	tick,
		glm::vec3 &	position,
		glm::quat &	rotation ) const

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

Fractional: a client's render clock draws between ticks.

Parameters

entity	The player asked about.
tick	The moment wanted, in the server's own clock.
position	Filled with where it was.
rotation	Filled with how it was turned.

Returns

False when nothing is remembered for that entity; a moment outside what is kept gets the nearest one kept.

forget()

void Vkm::Engine::NetRewind::forget

(

EntityId

entity

)

Forget entity, for a seat changing hands.

A stale ring would rewind the next player to the last one's positions.

Parameters

entity

The departed player's entity.

Member Data Documentation

HISTORY_TICKS

size_t Vkm::Engine::NetRewind::HISTORY_TICKS = 64

staticconstexpr

Ticks of history kept per player.

A second at Config::DEFAULT_TICK_RATE, covering a 400 ms round trip plus the interpolation delay.

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

• net/prediction/rewind.h