physics::ContactCache Class Reference

#include <ContactCache.hpp>

Classes
struct	Entry

Public Member Functions
ContactManifold &	merge (const ContactManifold &incoming)
	Look up the cached manifold for (a, b), copy accumulated impulses from any matching feature ids, then store incoming as the new cache entry.
void	endFrame () noexcept
	Drop any cached manifolds that weren't merged this frame.
auto	begin ()
	Iterate every live cached manifold (e.g. for the solver).
auto	end ()
auto	begin () const
auto	end () const
size_t	size () const noexcept
void	clear () noexcept

Static Public Member Functions
static uint64_t	pairKey (entt::entity a, entt::entity b) noexcept
	Canonical 64-bit key for an ordered pair (a, b) — undirected, so swapping a and b yields the same key.

Private Attributes
std::unordered_map< uint64_t, Entry >	cache_
uint32_t	currentFrame_ = 0

Member Function Documentation

begin() [1/2]

auto physics::ContactCache::begin ( )

inlinenodiscard

Iterate every live cached manifold (e.g. for the solver).

begin() [2/2]

auto physics::ContactCache::begin ( ) const

inlinenodiscard

clear()

void physics::ContactCache::clear ( )

noexcept

end() [1/2]

auto physics::ContactCache::end ( )

inlinenodiscard

end() [2/2]

auto physics::ContactCache::end ( ) const

inlinenodiscard

endFrame()

void physics::ContactCache::endFrame ( )

noexcept

Drop any cached manifolds that weren't merged this frame.

MUST be called once per tick after every collision pair has been merged.

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merge()

ContactManifold & physics::ContactCache::merge

(

const ContactManifold &

incoming

)

Look up the cached manifold for (a, b), copy accumulated impulses from any matching feature ids, then store incoming as the new cache entry.

Returns the in-cache reference (already warm-started) for the solver to consume.

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pairKey()

uint64_t physics::ContactCache::pairKey ( entt::entity a, entt::entity b )

staticnodiscardnoexcept

Canonical 64-bit key for an ordered pair (a, b) — undirected, so swapping a and b yields the same key.

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size()

size_t physics::ContactCache::size ( ) const

inlinenodiscardnoexcept

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Member Data Documentation

cache_

std::unordered_map<uint64_t, Entry> physics::ContactCache::cache_

private

currentFrame_

uint32_t physics::ContactCache::currentFrame_ = 0

private

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

• src/ecs/physics/ContactCache.hpp
• src/ecs/physics/ContactCache.cpp