Component retrieval

tests/zecsy.cpp

@@ -1,4 +1,6 @@
 #include <catch2/catch_test_macros.hpp>
+#include <catch2/internal/catch_test_spec_parser.hpp>
+#include <string>
 #define CATCH_CONFIG_MAIN
 #include <catch2/catch_all.hpp>
 
@@ -92,3 +94,22 @@ TEST_CASE("Attach a simple component to an entity and verify it is correctly ass
     REQUIRE(e2.has<ChoosenOne>());
     REQUIRE(w.has<ChoosenOne>(e2));
 }
+ 
+struct Name 
+{
+    std::string value;
+};
+
+TEST_CASE("Retrieve a component from an entity and verify its data matches what was set")
+{
+    world w;
+
+    auto e = w.make_entity();
+    e.set(Name{"zecsy!"});
+
+    REQUIRE(e.get<Name>().value == "zecsy!");
+
+    e.get<Name>().value = "super-zecsy!";
+
+    REQUIRE(e.get<Name>().value == "super-zecsy!");
+}

zecsy.hpp

@@ -190,9 +190,9 @@ namespace zecsy
     }
 
     template<typename T>
-    inline void component_storage::set(entity_id id, const T& comp)
+    inline void component_storage::set(entity_id e, const T& comp)
     {
-        bitset_dict[typeid(T)].set(id);
+        bitset_dict[typeid(T)].set(e);
 
         auto& storage = storage_dict[typeid(T)];
 
@@ -202,6 +202,8 @@ namespace zecsy
         storage.resize(old_size + T_size);
         void* ptr = &storage[0] + old_size;
         new(ptr) T(comp);
+
+        entity_dict[typeid(T)][e] = old_size / T_size;
     }
 
     template<typename T>