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Changed facts in DinkyECS to be a shared_ptr so that it is a singular data store instead of copied around. Closes #85.

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Zed A. Shaw 2025-08-18 02:17:04 -04:00
parent b839fb6463
commit 097879440d
1 changed files with 12 additions and 8 deletions
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20
dinkyecs.hpp
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@ -9,6 +9,7 @@
#include <typeinfo>
#include <unordered_map>
#include <optional>
#include <memory>
namespace DinkyECS
{
@ -16,8 +17,6 @@ namespace DinkyECS
const Entity NONE = 0;
using EntityMap = std::unordered_map<Entity, size_t>;
template <typename T>
struct ComponentStorage {
std::vector<T> data;
@ -29,17 +28,22 @@ namespace DinkyECS
std::any data;
};
typedef std::queue<Event> EventQueue;
using EntityMap = std::unordered_map<Entity, size_t>;
using EventQueue = std::queue<Event>;
using TypeMap = std::unordered_map<std::type_index, std::any>;
struct World {
unsigned long entity_count = NONE+1;
std::unordered_map<std::type_index, EntityMap> $components;
std::unordered_map<std::type_index, std::any> $facts;
std::shared_ptr<TypeMap> $facts = nullptr;
std::unordered_map<std::type_index, EventQueue> $events;
std::unordered_map<std::type_index, std::any> $component_storages;
std::unordered_map<std::type_index, std::queue<size_t>> $free_indices;
std::unordered_map<Entity, bool> $constants;
World() : $facts(std::make_shared<TypeMap>())
{}
Entity entity() { return ++entity_count; }
void destroy(DinkyECS::Entity entity) {
@ -135,26 +139,26 @@ namespace DinkyECS
template <typename Comp>
void set_the(Comp val) {
$facts.insert_or_assign(std::type_index(typeid(Comp)), val);
$facts->insert_or_assign(std::type_index(typeid(Comp)), val);
}
template <typename Comp>
Comp &get_the() {
auto comp_id = std::type_index(typeid(Comp));
dbc::check($facts.contains(comp_id),
dbc::check($facts->contains(comp_id),
fmt::format("!!!! ATTEMPT to access world fact that hasn't "
"been set yet: {}",
typeid(Comp).name()));
// use .at to get std::out_of_range if fact not set
std::any &res = $facts.at(comp_id);
std::any &res = $facts->at(comp_id);
return std::any_cast<Comp &>(res);
}
template <typename Comp>
bool has_the() {
auto comp_id = std::type_index(typeid(Comp));
return $facts.contains(comp_id);
return $facts->contains(comp_id);
}
template <typename Comp>