diff options
Diffstat (limited to 'src/entity_manager.cpp')
-rw-r--r-- | src/entity_manager.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/entity_manager.cpp b/src/entity_manager.cpp new file mode 100644 index 0000000..f792e17 --- /dev/null +++ b/src/entity_manager.cpp | |||
@@ -0,0 +1,39 @@ | |||
1 | #ifndef ENTITY_MANAGER_CPP_42D78C22 | ||
2 | #define ENTITY_MANAGER_CPP_42D78C22 | ||
3 | |||
4 | #include "entity_manager.h" | ||
5 | |||
6 | template <> | ||
7 | std::set<EntityManager::id_type> EntityManager::getEntitiesWithComponents<>( | ||
8 | std::set<std::type_index>& componentTypes) | ||
9 | { | ||
10 | if (cachedComponents.count(componentTypes) == 1) | ||
11 | { | ||
12 | return cachedComponents[componentTypes]; | ||
13 | } | ||
14 | |||
15 | std::set<id_type>& cache = cachedComponents[componentTypes]; | ||
16 | for (id_type entity = 0; entity < entities.size(); entity++) | ||
17 | { | ||
18 | EntityData& data = entities[entity]; | ||
19 | bool cacheEntity = true; | ||
20 | |||
21 | for (auto& componentType : componentTypes) | ||
22 | { | ||
23 | if (data.components.count(componentType) == 0) | ||
24 | { | ||
25 | cacheEntity = false; | ||
26 | break; | ||
27 | } | ||
28 | } | ||
29 | |||
30 | if (cacheEntity) | ||
31 | { | ||
32 | cache.insert(entity); | ||
33 | } | ||
34 | } | ||
35 | |||
36 | return cache; | ||
37 | } | ||
38 | |||
39 | #endif /* end of include guard: ENTITY_MANAGER_CPP_42D78C22 */ | ||