add src/ikarus subdir and make names unique for objects per scope

Signed-off-by: Folling <mail@folling.io>

src/ikarus/objects/properties/property_scope.cpp

@@ -0,0 +1,57 @@
+#include "property_scope.hpp"
+
+#include <cppbase/templates.hpp>
+
+#include <ikarus/objects/blueprint.hpp>
+#include <ikarus/objects/entity.hpp>
+
+IkarusPropertyScope::IkarusPropertyScope(Data data):
+    data{data} {}
+
+IkarusId IkarusPropertyScope::get_id() const {
+    return std::visit(
+        cppbase::overloaded{
+            [](IkarusBlueprint const * blueprint) { return blueprint->id; },
+            [](IkarusEntity const * entity) { return entity->id; }
+        },
+        data
+    );
+}
+
+IkarusPropertyScope * ikarus_property_source_create_blueprint(IkarusBlueprint * blueprint) {
+    return new IkarusPropertyScope{blueprint};
+}
+
+IkarusPropertyScope * ikarus_property_source_create_entity(IkarusEntity * entity) {
+    return new IkarusPropertyScope{entity};
+}
+
+void ikarus_property_source_visit(
+    struct IkarusPropertyScope * property_source,
+    void (*blueprint_visitor)(struct IkarusBlueprint *, void *),
+    void (*entity_visitor)(struct IkarusEntity *, void *),
+    void * user_data
+) {
+    std::visit(
+        cppbase::overloaded{
+            [blueprint_visitor, user_data](IkarusBlueprint * blueprint) { blueprint_visitor(blueprint, user_data); },
+            [entity_visitor, user_data](IkarusEntity * entity) { entity_visitor(entity, user_data); }
+        },
+        property_source->data
+    );
+}
+
+void ikarus_property_source_visit_const(
+    struct IkarusPropertyScope const * property_source,
+    void (*blueprint_visitor)(struct IkarusBlueprint const *, void *),
+    void (*entity_visitor)(struct IkarusEntity const *, void *),
+    void * user_data
+) {
+    std::visit(
+        cppbase::overloaded(
+            [blueprint_visitor, user_data](IkarusBlueprint const * blueprint) { blueprint_visitor(blueprint, user_data); },
+            [entity_visitor, user_data](IkarusEntity const * entity) { entity_visitor(entity, user_data); }
+        ),
+        property_source->data
+    );
+}