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Speed up searching for ecs table columns using a hash_map<uuid, column_id>

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This commit is contained in:
Nikita Lisitsa 2023-08-24 16:26:29 +03:00
parent a27378a3a7
commit dbeee752b7
3 changed files with 16 additions and 16 deletions
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11
libs/ecs/include/psemek/ecs/detail/table.hpp
View file

@ -4,6 +4,7 @@
#include <psemek/ecs/detail/stride.hpp>
#include <psemek/util/uuid.hpp>
#include <psemek/util/span.hpp>
#include <psemek/util/hash_table.hpp>
#include <psemek/util/assert.hpp>
#include <memory>
@ -32,6 +33,13 @@ namespace psemek::ecs::detail
return component_uuids_;
}
std::optional<std::size_t> get_component_column(util::uuid const & uuid) const
{
if (auto it = component_uuid_to_column_.find(uuid); it != component_uuid_to_column_.end())
return it->second;
return std::nullopt;
}
util::span<component_pointer const> get_component_pointers() const
{
return component_pointers_;
@ -86,6 +94,7 @@ namespace psemek::ecs::detail
protected:
std::vector<util::uuid> component_uuids_;
util::hash_map<util::uuid, std::size_t> component_uuid_to_column_;
std::vector<component_pointer> component_pointers_;
std::size_t row_count_ = 0;
@ -130,6 +139,8 @@ namespace psemek::ecs::detail
assert(sizeof...(Components) == component_uuids.size());
component_uuids_.assign(component_uuids.begin(), component_uuids.end());
component_pointers_.resize(sizeof...(Components));
for (std::size_t i = 0; i < component_uuids_.size(); ++i)
component_uuid_to_column_.insert({component_uuids_[i], i});
}
template <typename ... Components>

10
libs/ecs/include/psemek/ecs/entity_container.hpp
View file

@ -309,13 +309,11 @@ namespace psemek::ecs
{
util::uuid const uuid = Component::uuid();
auto const component_uuids = table_->get_component_uuids();
auto column = table_->get_component_column(uuid);
if (!column)
return nullptr;
for (std::size_t i = 0; i < component_uuids.size(); ++i)
if (uuid == component_uuids[i])
return reinterpret_cast<Component *>(table_->get_component_pointers()[i].data + detail::stride<Component>() * row_);
return nullptr;
return reinterpret_cast<Component *>(table_->get_component_pointers()[*column].data + detail::stride<Component>() * row_);
}
template <typename Component>

11
libs/ecs/source/detail/query_cache.cpp
View file

@ -10,16 +10,7 @@ namespace psemek::ecs::detail
entry.table = table;
for (auto const & uuid : component_uuids)
{
for (std::size_t i = 0; i < table->component_count(); ++i)
{
if (uuid == table->get_component_uuids()[i])
{
entry.column_ids.push_back(i);
break;
}
}
}
entry.column_ids.push_back(*(table->get_component_column(uuid)));
}
}