fix: generate add events not calling, parent trivial systems children systems not running (#136)

Co-authored-by: Ezekiel Warren <ezekiel@seaube.com>

Author: Kelwan

ecsact/entt/wrapper/dynamic.hh

@@ -179,6 +179,7 @@ auto context_generate_add(
 
 	const auto& component = *static_cast<const C*>(component_data);
 	registry.template emplace<pending_add<C>>(entity, component);
+	registry.template emplace_or_replace<component_added<C>>(entity);
 }
 
 } // namespace ecsact::entt::wrapper::dynamic

rt_entt_codegen/core/print_sys_exec.cc

@@ -419,39 +419,53 @@ static auto print_execute_systems(
 		}
 	}
 
-	for(auto provider : system_providers) {
-		auto result = provider->entity_iteration(ctx, names, [&] {
-			for(const auto& provider : system_providers) {
-				provider->pre_exec_system_impl(ctx, names);
-			}
+	auto exec_system_impls = [&](bool has_system_impl) {
+		for(auto provider : system_providers) {
+			auto result = provider->entity_iteration(ctx, names, [&] {
+				for(const auto& provider : system_providers) {
+					provider->pre_exec_system_impl(ctx, names);
+				}
+
+				context_init_provider
+					->pre_exec_system_impl_context_init(ctx, names, context_type_name);
+
+				ecsact::rt_entt_codegen::core::print_child_systems(
+					ctx,
+					names,
+					sys_like_id
+				);
 
-			context_init_provider
-				->pre_exec_system_impl_context_init(ctx, names, context_type_name);
+				if(has_system_impl) {
+					auto result =
+						std::ranges::find_if(system_providers, [&](auto provider) {
+							return provider->system_impl(ctx, names) ==
+								handle_exclusive_provide::HANDLED;
+						});
 
-			ecsact::rt_entt_codegen::core::print_child_systems(
-				ctx,
-				names,
-				sys_like_id
-			);
+					if(result == system_providers.end()) {
+						throw std::logic_error("system_impl was not handled by providers");
+					}
+				}
 
-			auto result = std::ranges::find_if(system_providers, [&](auto provider) {
-				return provider->system_impl(ctx, names) ==
-					handle_exclusive_provide::HANDLED;
-			});
-
-			if(result == system_providers.end()) {
-				throw std::logic_error("system_impl was not handled by providers");
-			}
+				for(const auto& provider : system_providers) {
+					provider->post_exec_system_impl(ctx, names);
+				}
 
-			for(const auto& provider : system_providers) {
-				provider->post_exec_system_impl(ctx, names);
+				ctx.write("\n");
+			});
+			if(result == handle_exclusive_provide::HANDLED) {
+				break;
 			}
-
-			ctx.write("\n");
-		});
-		if(result == handle_exclusive_provide::HANDLED) {
-			break;
 		}
+	};
+
+	auto child_ids = ecsact::meta::get_child_system_ids(sys_like_id);
+	if(child_ids.empty()) {
+		// system impl was already checked at start
+		exec_system_impls(true);
+	} else {
+		block(ctx, "if(system_impl == nullptr)", [&] { exec_system_impls(false); });
+		block(ctx, "else", [&] { exec_system_impls(true); });
 	}
 
 	for(const auto& provider : system_providers) {
@@ -541,7 +555,11 @@ static auto print_execute_system_template_specialization(
 		">();\n"
 	);
 
-	block(ctx, "if(system_impl == nullptr)", [&] { ctx.write("return;"); });
+	auto child_ids = ecsact::meta::get_child_system_ids(system_id);
+	if(child_ids.empty()) {
+		block(ctx, "if(system_impl == nullptr)", [&] { ctx.write("return;"); });
+		ctx.write("\n");
+	}
 
 	print_execute_systems(
 		ctx,
@@ -591,7 +609,11 @@ static auto print_execute_actions_template_specialization(
 		">();\n"
 	);
 
-	block(ctx, "if(system_impl == nullptr)", [&] { ctx.write("return;"); });
+	auto child_ids = ecsact::meta::get_child_system_ids(action_id);
+	if(child_ids.empty()) {
+		block(ctx, "if(system_impl == nullptr)", [&] { ctx.write("return;"); });
+		ctx.write("\n");
+	}
 
 	ctx.write(
 		"auto actions = actions_map.as_action_span<",

rt_entt_codegen/core/system_provider/association/association.cc

@@ -125,8 +125,14 @@ auto provider::association::system_impl(
 		ctx,
 		"if(found_assoc_entities == " + std::to_string(other_view_names.size()) +
 			")",
-		[&] { ctx.write("system_impl(&context);\n"); }
+		[&] {
+			auto child_ids = ecsact::meta::get_child_system_ids(sys_like_id);
+			if(child_ids.empty()) {
+				ctx.write("system_impl(&context);\n");
+			}
+		}
 	);
+
 	return HANDLED;
 }
 

test/runtime_test.cc

@@ -778,7 +778,7 @@ TEST(Core, DynamicSystemImpl) {
 	EXPECT_EQ(comp_get.a, comp.a);
 }
 
-TEST(Core, GeneratesCreateEvent) {
+TEST(Core, GeneratesCreateAndInitEvent) {
 	SET_SYSTEM_IMPL(MakeAnother);
 
 	auto reg = ecsact::core::registry("GeneratesCreateEvent");
@@ -800,9 +800,16 @@ TEST(Core, GeneratesCreateEvent) {
 		}
 	);
 
+	auto init_event_happened = false;
+
+	evc.set_init_callback<runtime_test::ComponentA>(
+		[&](auto entity_id, auto component) { init_event_happened = true; }
+	);
+
 	auto exec_err = reg.execute_systems(std::array{options}, evc);
 	EXPECT_EQ(exec_err, ECSACT_EXEC_SYS_OK);
 	EXPECT_EQ(created_event_count, 1);
+	EXPECT_EQ(init_event_happened, true);
 	EXPECT_EQ(2, reg.count_entities());
 }