remote (combined) bitset have

src/bitset_image_loader.hpp

@@ -1,14 +1,36 @@
 #pragma once
 
 #include <solanaceae/object_store/fwd.hpp>
+#include <solanaceae/contact/contact_model3.hpp>
+#include <solanaceae/util/bitset.hpp>
 
 #include "./texture_cache.hpp"
 
 #include <optional>
 
+struct ObjectContactSub final {
+	ObjectHandle o;
+	Contact3 c{entt::null};
+};
+
+template<>
+struct std::hash<ObjectContactSub> {
+	std::size_t operator()(ObjectContactSub const& ocs) const noexcept {
+		const std::size_t h1 = reinterpret_cast<std::size_t>(ocs.o.registry());
+		const std::size_t h2 = entt::to_integral(ocs.o.entity());
+		const std::size_t h3 = entt::to_integral(ocs.c);
+		return (h1 << 3) ^ (h3 << 7) ^ (h2 * 11400714819323198485llu);
+	}
+};
+
 class BitsetImageLoader {
+	BitSet _tmp_bitset;
+
+	std::optional<TextureEntry> haveToTexture(TextureUploaderI& tu, BitSet& have, ObjectHandle o);
+
 	public:
 		BitsetImageLoader(void);
 		std::optional<TextureEntry> load(TextureUploaderI& tu, ObjectHandle o);
+		std::optional<TextureEntry> load(TextureUploaderI& tu, ObjectContactSub ocs);
 };