more minor refactoring

solanaceae/ngc_ft1_sha1/participation.cpp

@@ -0,0 +1,34 @@
+#include "./participation.hpp"
+
+#include "./chunk_picker.hpp"
+
+bool addParticipation(Contact3Handle c, ObjectHandle o) {
+	bool was_new {false};
+
+	if (static_cast<bool>(o)) {
+		const auto [_, inserted] = o.get_or_emplace<Components::SuspectedParticipants>().participants.emplace(c);
+		was_new = inserted;
+	}
+
+	if (static_cast<bool>(c)) {
+		const auto [_, inserted] = c.get_or_emplace<ChunkPicker>().participating.emplace(o);
+		was_new = was_new || inserted;
+
+		// TODO: if not have_all
+		c.get_or_emplace<ChunkPicker>().participating_unfinished.emplace(o, ChunkPicker::ParticipationEntry{});
+	}
+
+	return was_new;
+}
+
+void removeParticipation(Contact3Handle c, ObjectHandle o) {
+	if (static_cast<bool>(o) && o.all_of<Components::SuspectedParticipants>()) {
+		o.get<Components::SuspectedParticipants>().participants.erase(c);
+	}
+
+	if (static_cast<bool>(c) && c.all_of<ChunkPicker>()) {
+		c.get<ChunkPicker>().participating.erase(o);
+		c.get<ChunkPicker>().participating_unfinished.erase(o);
+	}
+}
+