diff options
Diffstat (limited to 'src/entity_manager.cpp')
-rw-r--r-- | src/entity_manager.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/entity_manager.cpp b/src/entity_manager.cpp new file mode 100644 index 0000000..4bdfe8a --- /dev/null +++ b/src/entity_manager.cpp | |||
@@ -0,0 +1,38 @@ | |||
1 | #ifndef ENTITY_MANAGER_CPP_42D78C22 | ||
2 | #define ENTITY_MANAGER_CPP_42D78C22 | ||
3 | |||
4 | #include "entity_manager.h" | ||
5 | |||
6 | template <> | ||
7 | std::set<int> EntityManager::getEntitiesWithComponents<>(std::set<std::type_index>& componentTypes) | ||
8 | { | ||
9 | if (cachedComponents.count(componentTypes) == 1) | ||
10 | { | ||
11 | return cachedComponents[componentTypes]; | ||
12 | } | ||
13 | |||
14 | std::set<int>& cache = cachedComponents[componentTypes]; | ||
15 | for (auto& entity : entities) | ||
16 | { | ||
17 | EntityData& data = entity.second; | ||
18 | bool cacheEntity = true; | ||
19 | |||
20 | for (auto& componentType : componentTypes) | ||
21 | { | ||
22 | if (data.components.count(componentType) == 0) | ||
23 | { | ||
24 | cacheEntity = false; | ||
25 | break; | ||
26 | } | ||
27 | } | ||
28 | |||
29 | if (cacheEntity) | ||
30 | { | ||
31 | cache.insert(entity.first); | ||
32 | } | ||
33 | } | ||
34 | |||
35 | return cache; | ||
36 | } | ||
37 | |||
38 | #endif /* end of include guard: ENTITY_MANAGER_CPP_42D78C22 */ | ||