Working on server optimization

resources/config/crosshair_config.json

@@ -0,0 +1,21 @@
+{
+  "enabled": true,
+
+  "referenceResolution": [1280, 720],
+
+  "color": [1.0, 1.0, 1.0],
+  "cl_crosshairalpha": 1.0,
+  "cl_crosshairthickness": 2.0,
+
+  "centerGapPx": 10.0,
+
+  "top": {
+    "lengthPx": 14.0,
+    "angleDeg": 90.0
+  },
+
+  "arms": [
+    { "lengthPx": 20.0, "angleDeg": 210.0 },
+    { "lengthPx": 20.0, "angleDeg": 330.0 }
+  ]
+}

server/server.cpp

@@ -323,7 +323,6 @@ private:
 			receivedState.shipType = this->shipType;
 			timedClientStates.add_state(receivedState);
 
-			retranslateMessage(cleanMessage);
 		}
 		else if (type == "RESPAWN") {
 			{
@@ -433,16 +432,6 @@ private:
 		}
 	}
 
-	void retranslateMessage(const std::string& msg) {
-		std::string event_msg = "EVENT:" + std::to_string(id_) + ":" + msg;
-
-		std::lock_guard<std::mutex> lock(g_sessions_mutex);
-		for (auto& session : g_sessions) {
-			if (session->get_id() != id_) {
-				session->send_message(event_msg);
-			}
-		}
-	}
 };
 
 void broadcastToAll(const std::string& message) {
@@ -454,273 +443,257 @@ void broadcastToAll(const std::string& message) {
 
 void update_world(net::steady_timer& timer, net::io_context& ioc) {
 
-	static auto last_snapshot_time = std::chrono::steady_clock::now();
-	auto now = std::chrono::steady_clock::now();
-	/*static uint64_t lastTickCount = 0;
+	static auto last_snapshot_time = std::chrono::system_clock::now();
 
-	if (lastTickCount == 0) {
-		//lastTickCount = SDL_GetTicks64();
-		lastTickCount = std::chrono::duration_cast<std::chrono::milliseconds>(
-			std::chrono::system_clock::now().time_since_epoch()
-		).count();
+	auto now = std::chrono::system_clock::now();
+	uint64_t now_ms = static_cast<uint64_t>(
+		std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count());
 
-		lastTickCount = (lastTickCount / 50) * 50;
-
-		return;
-	}
-
-
-	auto newTickCount = std::chrono::duration_cast<std::chrono::milliseconds>(
-		std::chrono::system_clock::now().time_since_epoch()
-	).count();
-
-	newTickCount = (newTickCount / 50) * 50;
-
-	int64_t deltaMs = static_cast<int64_t>(newTickCount - lastTickCount);
-
-	std::chrono::system_clock::time_point nowRounded = std::chrono::system_clock::time_point(std::chrono::milliseconds(newTickCount));
-	*/
-	// For each player
-	// Get letest state + add time (until newTickCount)
-	// Calculate if collisions with boxes
-
-
-
-
-	// Рассылка Snapshot раз в 1000мс
-	/*
-	if (std::chrono::duration_cast<std::chrono::milliseconds>(now - last_snapshot_time).count() >= 1000) {
+	// --- Snapshot every 500ms ---
+	/*if (std::chrono::duration_cast<std::chrono::milliseconds>(now - last_snapshot_time).count() >= 500) {
 		last_snapshot_time = now;
 
-		auto system_now = std::chrono::system_clock::now();
-
-		std::string snapshot_msg = "SNAPSHOT:" + std::to_string(
-			std::chrono::duration_cast<std::chrono::milliseconds>(
-				system_now.time_since_epoch()).count()
-		);
+		std::string snapshot_msg = "SNAPSHOT:" + std::to_string(now_ms);
 
 		std::lock_guard<std::mutex> lock(g_sessions_mutex);
-
-		// Формируем общую строку состояний всех игроков
 		for (auto& session : g_sessions) {
-			ClientState st = session->get_latest_state(system_now);
+			ClientState st = session->get_latest_state(now);
 			snapshot_msg += "|" + std::to_string(session->get_id()) + ":" + st.formPingMessageContent();
 		}
-
 		for (auto& session : g_sessions) {
 			session->send_message(snapshot_msg);
 		}
 	}*/
 
-	const std::chrono::milliseconds interval(50);
-	timer.expires_after(interval);
+	// --- Tick: broadcast each player's latest state to all others (20Hz) ---
+	// Send the raw last-known state with its original timestamp, NOT an extrapolated one.
+	// Extrapolating here causes snap-back: if a player stops rotating, the server would
+	// keep sending over-rotated positions until the new state arrives, then B snaps back.
+	{
+		std::lock_guard<std::mutex> lock(g_sessions_mutex);
+		for (auto& sender : g_sessions) {
+			if (sender->timedClientStates.timedStates.empty()) continue;
 
-	timer.async_wait([&](const boost::system::error_code& ec) {
-		if (ec) return;
+			const ClientState& st = sender->timedClientStates.timedStates.back();
+			uint64_t stateTime = static_cast<uint64_t>(
+				std::chrono::duration_cast<std::chrono::milliseconds>(
+					st.lastUpdateServerTime.time_since_epoch()).count());
 
-		auto now = std::chrono::system_clock::now();
-		uint64_t now_ms = static_cast<uint64_t>(std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count());
+			std::string event_msg = "EVENT:" + std::to_string(sender->get_id()) +
+				":UPD:" + std::to_string(stateTime) + ":" + st.formPingMessageContent();
 
-		std::vector<DeathInfo> deathEvents;
-
-		{
-			std::lock_guard<std::mutex> pl(g_projectiles_mutex);
-			std::vector<int> indicesToRemove;
-
-			float dt = 50.0f / 1000.0f;
-
-			for (size_t i = 0; i < g_projectiles.size(); ++i) {
-				auto& pr = g_projectiles[i];
-
-				pr.pos += pr.vel * dt;
-
-				if (now_ms > pr.spawnMs + static_cast<uint64_t>(pr.lifeMs)) {
-					indicesToRemove.push_back(static_cast<int>(i));
-					continue;
-				}
-
-				bool hitDetected = false;
-
-				{
-					std::lock_guard<std::mutex> lm(g_sessions_mutex);
-					std::lock_guard<std::mutex> gd(g_dead_mutex);
-
-					for (auto& session : g_sessions) {
-						int targetId = session->get_id();
-
-						if (targetId == pr.shooterId) continue;
-						if (g_dead_players.find(targetId) != g_dead_players.end()) continue;
-
-						ClientState targetState;
-						if (!session->fetchStateAtTime(now, targetState)) continue;
-
-						Eigen::Vector3f diff = pr.pos - targetState.position;
-						const float shipRadius = 15.0f;
-						const float projectileRadius = 1.5f;
-						float combinedRadius = shipRadius + projectileRadius;
-
-						if (diff.squaredNorm() <= combinedRadius * combinedRadius) {
-							DeathInfo death;
-							death.targetId = targetId;
-							death.serverTime = now_ms;
-							death.position = pr.pos;
-							death.killerId = pr.shooterId;
-
-							deathEvents.push_back(death);
-							g_dead_players.insert(targetId);
-							indicesToRemove.push_back(static_cast<int>(i));
-							hitDetected = true;
-
-							std::cout << "Server: *** HIT DETECTED! ***" << std::endl;
-							std::cout << "Server: Projectile at ("
-								<< pr.pos.x() << ", " << pr.pos.y() << ", " << pr.pos.z()
-								<< ") hit player " << targetId << std::endl;
-							break;
-						}
-					}
-				}
-
-				if (hitDetected) continue;
-			}
-
-			if (!indicesToRemove.empty()) {
-				std::sort(indicesToRemove.rbegin(), indicesToRemove.rend());
-				for (int idx : indicesToRemove) {
-					if (idx >= 0 && idx < (int)g_projectiles.size()) {
-						g_projectiles.erase(g_projectiles.begin() + idx);
-					}
+			for (auto& receiver : g_sessions) {
+				if (receiver->get_id() != sender->get_id()) {
+					receiver->send_message(event_msg);
 				}
 			}
 		}
+	}
 
-		{
-			std::lock_guard<std::mutex> bm(g_boxes_mutex);
-			//const float projectileHitRadius = 1.5f;
-			const float projectileHitRadius = 5.0f;
-			const float boxCollisionRadius = 2.0f;
+	// --- Tick: projectile movement and hit detection ---
+	const float dt = 50.0f / 1000.0f;
+	std::vector<DeathInfo> deathEvents;
 
-			std::vector<std::pair<size_t, size_t>> boxProjectileCollisions;
+	{
+		std::lock_guard<std::mutex> pl(g_projectiles_mutex);
+		std::vector<int> indicesToRemove;
 
-			for (size_t bi = 0; bi < g_serverBoxes.size(); ++bi) {
-				if (g_serverBoxes[bi].destroyed) continue;
+		for (size_t i = 0; i < g_projectiles.size(); ++i) {
+			auto& pr = g_projectiles[i];
 
-				Eigen::Vector3f boxWorld = g_serverBoxes[bi].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
+			pr.pos += pr.vel * dt;
 
-				for (size_t pi = 0; pi < g_projectiles.size(); ++pi) {
-					const auto& pr = g_projectiles[pi];
-					Eigen::Vector3f diff = pr.pos - boxWorld;
-					//std::cout << "diff norm is " << diff.norm() << std::endl;
-					float thresh = boxCollisionRadius + projectileHitRadius;
-
-					if (diff.squaredNorm() <= thresh * thresh) {
-						boxProjectileCollisions.push_back({ bi, pi });
-					}
-				}
+			if (now_ms > pr.spawnMs + static_cast<uint64_t>(pr.lifeMs)) {
+				indicesToRemove.push_back(static_cast<int>(i));
+				continue;
 			}
 
-			for (const auto& [boxIdx, projIdx] : boxProjectileCollisions) {
-				g_serverBoxes[boxIdx].destroyed = true;
+			bool hitDetected = false;
 
-				Eigen::Vector3f boxWorld = g_serverBoxes[boxIdx].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
-
-				BoxDestroyedInfo destruction;
-				destruction.boxIndex = static_cast<int>(boxIdx);
-				destruction.serverTime = now_ms;
-				destruction.position = boxWorld;
-				destruction.destroyedBy = g_projectiles[projIdx].shooterId;
-
-				{
-					std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
-					g_boxDestructions.push_back(destruction);
-				}
-
-				std::cout << "Server: Box " << boxIdx << " destroyed by projectile from player "
-					<< g_projectiles[projIdx].shooterId << std::endl;
-			}
-		}
-
-		{
-			std::lock_guard<std::mutex> bm(g_boxes_mutex);
-			std::lock_guard<std::mutex> lm(g_sessions_mutex);
-
-			const float shipCollisionRadius = 15.0f;
-			const float boxCollisionRadius = 2.0f;
-
-			for (size_t bi = 0; bi < g_serverBoxes.size(); ++bi) {
-				if (g_serverBoxes[bi].destroyed) continue;
-
-				Eigen::Vector3f boxWorld = g_serverBoxes[bi].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
+			{
+				std::lock_guard<std::mutex> lm(g_sessions_mutex);
+				std::lock_guard<std::mutex> gd(g_dead_mutex);
 
 				for (auto& session : g_sessions) {
-					{
-						std::lock_guard<std::mutex> gd(g_dead_mutex);
-						if (g_dead_players.find(session->get_id()) != g_dead_players.end()) {
-							continue;
-						}
-					}
+					int targetId = session->get_id();
 
-					ClientState shipState;
-					if (!session->fetchStateAtTime(now, shipState)) continue;
+					if (targetId == pr.shooterId) continue;
+					if (g_dead_players.find(targetId) != g_dead_players.end()) continue;
 
-					Eigen::Vector3f diff = shipState.position - boxWorld;
-					float thresh = shipCollisionRadius + boxCollisionRadius;
+					ClientState targetState;
+					if (!session->fetchStateAtTime(now, targetState)) continue;
 
-					if (diff.squaredNorm() <= thresh * thresh) {
-						g_serverBoxes[bi].destroyed = true;
+					Eigen::Vector3f diff = pr.pos - targetState.position;
+					const float shipRadius = 15.0f;
+					const float projectileRadius = 1.5f;
+					float combinedRadius = shipRadius + projectileRadius;
 
-						BoxDestroyedInfo destruction;
-						destruction.boxIndex = static_cast<int>(bi);
-						destruction.serverTime = now_ms;
-						destruction.position = boxWorld;
-						destruction.destroyedBy = session->get_id();
+					if (diff.squaredNorm() <= combinedRadius * combinedRadius) {
+						DeathInfo death;
+						death.targetId = targetId;
+						death.serverTime = now_ms;
+						death.position = pr.pos;
+						death.killerId = pr.shooterId;
 
-						{
-							std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
-							g_boxDestructions.push_back(destruction);
-						}
+						deathEvents.push_back(death);
+						g_dead_players.insert(targetId);
+						indicesToRemove.push_back(static_cast<int>(i));
+						hitDetected = true;
 
-						std::cout << "Server: Box " << bi << " destroyed by ship collision with player "
-							<< session->get_id() << std::endl;
+						std::cout << "Server: *** HIT DETECTED! ***" << std::endl;
+						std::cout << "Server: Projectile at ("
+							<< pr.pos.x() << ", " << pr.pos.y() << ", " << pr.pos.z()
+							<< ") hit player " << targetId << std::endl;
 						break;
 					}
 				}
 			}
+
+			if (hitDetected) continue;
 		}
 
-		if (!deathEvents.empty()) {
-			for (const auto& death : deathEvents) {
-				std::string deadMsg = "DEAD:" +
-					std::to_string(death.serverTime) + ":" +
-					std::to_string(death.targetId) + ":" +
-					std::to_string(death.position.x()) + ":" +
-					std::to_string(death.position.y()) + ":" +
-					std::to_string(death.position.z()) + ":" +
-					std::to_string(death.killerId);
+		if (!indicesToRemove.empty()) {
+			std::sort(indicesToRemove.rbegin(), indicesToRemove.rend());
+			for (int idx : indicesToRemove) {
+				if (idx >= 0 && idx < (int)g_projectiles.size()) {
+					g_projectiles.erase(g_projectiles.begin() + idx);
+				}
+			}
+		}
+	}
 
-				broadcastToAll(deadMsg);
+	// --- Tick: box-projectile collisions ---
+	{
+		std::lock_guard<std::mutex> bm(g_boxes_mutex);
+		const float projectileHitRadius = 5.0f;
+		const float boxCollisionRadius = 2.0f;
 
-				std::cout << "Server: Sent DEAD event - Player " << death.targetId
-					<< " killed by " << death.killerId << std::endl;
+		std::vector<std::pair<size_t, size_t>> boxProjectileCollisions;
+
+		for (size_t bi = 0; bi < g_serverBoxes.size(); ++bi) {
+			if (g_serverBoxes[bi].destroyed) continue;
+
+			Eigen::Vector3f boxWorld = g_serverBoxes[bi].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
+
+			for (size_t pi = 0; pi < g_projectiles.size(); ++pi) {
+				const auto& pr = g_projectiles[pi];
+				Eigen::Vector3f diff = pr.pos - boxWorld;
+				float thresh = boxCollisionRadius + projectileHitRadius;
+
+				if (diff.squaredNorm() <= thresh * thresh) {
+					boxProjectileCollisions.push_back({ bi, pi });
+				}
 			}
 		}
 
-		{
-			std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
-			for (const auto& destruction : g_boxDestructions) {
-				std::string boxMsg = "BOX_DESTROYED:" +
-					std::to_string(destruction.boxIndex) + ":" +
-					std::to_string(destruction.serverTime) + ":" +
-					std::to_string(destruction.position.x()) + ":" +
-					std::to_string(destruction.position.y()) + ":" +
-					std::to_string(destruction.position.z()) + ":" +
-					std::to_string(destruction.destroyedBy);
+		for (const auto& [boxIdx, projIdx] : boxProjectileCollisions) {
+			g_serverBoxes[boxIdx].destroyed = true;
 
-				broadcastToAll(boxMsg);
-				std::cout << "Server: Broadcasted BOX_DESTROYED for box " << destruction.boxIndex << std::endl;
+			Eigen::Vector3f boxWorld = g_serverBoxes[boxIdx].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
+
+			BoxDestroyedInfo destruction;
+			destruction.boxIndex = static_cast<int>(boxIdx);
+			destruction.serverTime = now_ms;
+			destruction.position = boxWorld;
+			destruction.destroyedBy = g_projectiles[projIdx].shooterId;
+
+			{
+				std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
+				g_boxDestructions.push_back(destruction);
 			}
-			g_boxDestructions.clear();
-		}
 
+			std::cout << "Server: Box " << boxIdx << " destroyed by projectile from player "
+				<< g_projectiles[projIdx].shooterId << std::endl;
+		}
+	}
+
+	// --- Tick: box-ship collisions ---
+	{
+		std::lock_guard<std::mutex> bm(g_boxes_mutex);
+		std::lock_guard<std::mutex> lm(g_sessions_mutex);
+
+		const float shipCollisionRadius = 15.0f;
+		const float boxCollisionRadius = 2.0f;
+
+		for (size_t bi = 0; bi < g_serverBoxes.size(); ++bi) {
+			if (g_serverBoxes[bi].destroyed) continue;
+
+			Eigen::Vector3f boxWorld = g_serverBoxes[bi].position + Eigen::Vector3f(0.0f, 0.0f, 45000.0f);
+
+			for (auto& session : g_sessions) {
+				{
+					std::lock_guard<std::mutex> gd(g_dead_mutex);
+					if (g_dead_players.find(session->get_id()) != g_dead_players.end()) {
+						continue;
+					}
+				}
+
+				ClientState shipState;
+				if (!session->fetchStateAtTime(now, shipState)) continue;
+
+				Eigen::Vector3f diff = shipState.position - boxWorld;
+				float thresh = shipCollisionRadius + boxCollisionRadius;
+
+				if (diff.squaredNorm() <= thresh * thresh) {
+					g_serverBoxes[bi].destroyed = true;
+
+					BoxDestroyedInfo destruction;
+					destruction.boxIndex = static_cast<int>(bi);
+					destruction.serverTime = now_ms;
+					destruction.position = boxWorld;
+					destruction.destroyedBy = session->get_id();
+
+					{
+						std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
+						g_boxDestructions.push_back(destruction);
+					}
+
+					std::cout << "Server: Box " << bi << " destroyed by ship collision with player "
+						<< session->get_id() << std::endl;
+					break;
+				}
+			}
+		}
+	}
+
+	// --- Broadcast deaths ---
+	for (const auto& death : deathEvents) {
+		std::string deadMsg = "DEAD:" +
+			std::to_string(death.serverTime) + ":" +
+			std::to_string(death.targetId) + ":" +
+			std::to_string(death.position.x()) + ":" +
+			std::to_string(death.position.y()) + ":" +
+			std::to_string(death.position.z()) + ":" +
+			std::to_string(death.killerId);
+
+		broadcastToAll(deadMsg);
+
+		std::cout << "Server: Sent DEAD event - Player " << death.targetId
+			<< " killed by " << death.killerId << std::endl;
+	}
+
+	// --- Broadcast box destructions ---
+	{
+		std::lock_guard<std::mutex> dm(g_boxDestructions_mutex);
+		for (const auto& destruction : g_boxDestructions) {
+			std::string boxMsg = "BOX_DESTROYED:" +
+				std::to_string(destruction.boxIndex) + ":" +
+				std::to_string(destruction.serverTime) + ":" +
+				std::to_string(destruction.position.x()) + ":" +
+				std::to_string(destruction.position.y()) + ":" +
+				std::to_string(destruction.position.z()) + ":" +
+				std::to_string(destruction.destroyedBy);
+
+			broadcastToAll(boxMsg);
+			std::cout << "Server: Broadcasted BOX_DESTROYED for box " << destruction.boxIndex << std::endl;
+		}
+		g_boxDestructions.clear();
+	}
+
+	// --- Schedule next tick in 50ms ---
+	timer.expires_after(std::chrono::milliseconds(50));
+	timer.async_wait([&timer, &ioc](const boost::system::error_code& ec) {
+		if (ec) return;
 		update_world(timer, ioc);
 		});
 }

src/Space.cpp

@@ -361,6 +361,19 @@ namespace ZL
 			throw std::runtime_error("Failed to load spark emitter config file!");
 		}
 
+		crosshairCfgLoaded = loadCrosshairConfig("resources/config/crosshair_config.json");
+		std::cerr << "[Crosshair] loaded=" << crosshairCfgLoaded
+			<< " enabled=" << crosshairCfg.enabled
+			<< " w=" << Environment::width << " h=" << Environment::height
+			<< " alpha=" << crosshairCfg.alpha
+			<< " thickness=" << crosshairCfg.thicknessPx
+			<< " gap=" << crosshairCfg.gapPx << "\n";
+		if (!crosshairCfgLoaded) {
+			std::cerr << "Failed to load crosshair_config.json, using defaults\n";
+		}
+
+
+
 		textRenderer = std::make_unique<ZL::TextRenderer>();
 		if (!textRenderer->init(renderer, "resources/fonts/DroidSans.ttf", 32, CONST_ZIP_FILE)) {
 			std::cerr << "Failed to init TextRenderer\n";
@@ -597,6 +610,7 @@ namespace ZL
 		drawBoxesLabels();
 		drawShip();
 
+		drawCrosshair();
 		drawTargetHud();
 		CheckGlError();
 	}
@@ -726,6 +740,230 @@ namespace ZL
 		glEnable(GL_DEPTH_TEST);
 	}
 
+	// хелпер прицела: добавляет повернутую 2D-линию в меш прицела
+	static void AppendRotatedRect2D(
+		VertexDataStruct& out,
+		float cx, float cy,
+		float length, float thickness,
+		float angleRad,
+		float z,
+		const Eigen::Vector3f& rgb)
+	{
+		// прямоугольник вдоль локальной оси +X: [-L/2..+L/2] и [-T/2..+T/2]
+		float hl = length * 0.5f;
+		float ht = thickness * 0.5f;
+
+		Eigen::Vector2f p0(-hl, -ht);
+		Eigen::Vector2f p1(-hl, +ht);
+		Eigen::Vector2f p2(+hl, +ht);
+		Eigen::Vector2f p3(+hl, -ht);
+
+		float c = std::cos(angleRad);
+		float s = std::sin(angleRad);
+
+		auto rot = [&](const Eigen::Vector2f& p) -> Vector3f {
+			float rx = p.x() * c - p.y() * s;
+			float ry = p.x() * s + p.y() * c;
+			return Vector3f(cx + rx, cy + ry, z);
+			};
+
+		Vector3f v0 = rot(p0);
+		Vector3f v1 = rot(p1);
+		Vector3f v2 = rot(p2);
+		Vector3f v3 = rot(p3);
+
+		// 2 треугольника
+		out.PositionData.push_back(v0);
+		out.PositionData.push_back(v1);
+		out.PositionData.push_back(v2);
+		out.PositionData.push_back(v2);
+		out.PositionData.push_back(v3);
+		out.PositionData.push_back(v0);
+
+		for (int i = 0; i < 6; ++i) out.ColorData.push_back(rgb);
+	}
+
+	bool Space::loadCrosshairConfig(const std::string& path)
+	{
+		using json = nlohmann::json;
+
+		std::string content;
+		try {
+			if (std::string(CONST_ZIP_FILE).empty()) content = readTextFile(path);
+			else {
+				auto buf = readFileFromZIP(path, CONST_ZIP_FILE);
+				if (buf.empty()) return false;
+				content.assign(buf.begin(), buf.end());
+			}
+			json j = json::parse(content);
+
+			if (j.contains("enabled")) crosshairCfg.enabled = j["enabled"].get<bool>();
+
+			if (j.contains("referenceResolution") && j["referenceResolution"].is_array() && j["referenceResolution"].size() == 2) {
+				crosshairCfg.refW = j["referenceResolution"][0].get<int>();
+				crosshairCfg.refH = j["referenceResolution"][1].get<int>();
+			}
+
+			if (j.contains("scale")) crosshairCfg.scaleMul = j["scale"].get<float>();
+			crosshairCfg.scaleMul = std::clamp(crosshairCfg.scaleMul, 0.1f, 3.0f);
+
+			if (j.contains("color") && j["color"].is_array() && j["color"].size() == 3) {
+				crosshairCfg.color = Eigen::Vector3f(
+					j["color"][0].get<float>(),
+					j["color"][1].get<float>(),
+					j["color"][2].get<float>()
+				);
+			}
+
+			if (j.contains("cl_crosshairalpha")) crosshairCfg.alpha = j["cl_crosshairalpha"].get<float>();
+			if (j.contains("cl_crosshairthickness")) crosshairCfg.thicknessPx = j["cl_crosshairthickness"].get<float>();
+			if (j.contains("centerGapPx")) crosshairCfg.gapPx = j["centerGapPx"].get<float>();
+
+			if (j.contains("top") && j["top"].is_object()) {
+				auto t = j["top"];
+				if (t.contains("lengthPx")) crosshairCfg.topLenPx = t["lengthPx"].get<float>();
+				if (t.contains("angleDeg")) crosshairCfg.topAngleDeg = t["angleDeg"].get<float>();
+			}
+
+			crosshairCfg.arms.clear();
+			if (j.contains("arms") && j["arms"].is_array()) {
+				for (auto& a : j["arms"]) {
+					CrosshairConfig::Arm arm;
+					arm.lenPx = a.value("lengthPx", 20.0f);
+					arm.angleDeg = a.value("angleDeg", 210.0f);
+					crosshairCfg.arms.push_back(arm);
+				}
+			}
+			else {
+				// дефолт
+				crosshairCfg.arms.push_back({ 20.0f, 210.0f });
+				crosshairCfg.arms.push_back({ 20.0f, 330.0f });
+			}
+
+			// clamp
+			crosshairCfg.alpha = std::clamp(crosshairCfg.alpha, 0.0f, 1.0f);
+			crosshairCfg.thicknessPx = max(0.5f, crosshairCfg.thicknessPx);
+			crosshairCfg.gapPx = max(0.0f, crosshairCfg.gapPx);
+
+			crosshairMeshValid = false; // пересобрать
+			return true;
+		}
+		catch (...) {
+			return false;
+		}
+	}
+
+	// пересобирает mesh прицела при изменениях/ресайзе
+	void Space::rebuildCrosshairMeshIfNeeded()
+	{
+		if (!crosshairCfg.enabled) return;
+
+		// если ничего не изменилось — не трогаем VBO
+		if (crosshairMeshValid &&
+			crosshairLastW == Environment::width &&
+			crosshairLastH == Environment::height &&
+			std::abs(crosshairLastAlpha - crosshairCfg.alpha) < 1e-6f &&
+			std::abs(crosshairLastThickness - crosshairCfg.thicknessPx) < 1e-6f &&
+			std::abs(crosshairLastGap - crosshairCfg.gapPx) < 1e-6f &&
+			std::abs(crosshairLastScaleMul - crosshairCfg.scaleMul) < 1e-6f)
+		{
+			return;
+		}
+
+		crosshairLastW = Environment::width;
+		crosshairLastH = Environment::height;
+		crosshairLastAlpha = crosshairCfg.alpha;
+		crosshairLastThickness = crosshairCfg.thicknessPx;
+		crosshairLastGap = crosshairCfg.gapPx;
+		crosshairLastScaleMul = crosshairCfg.scaleMul;
+
+		float cx = Environment::width * 0.5f;
+		float cy = Environment::height * 0.5f;
+
+		// масштаб от reference (стандартно: по высоте)
+		float scale = (crosshairCfg.refH > 0) ? (Environment::height / (float)crosshairCfg.refH) : 1.0f;
+		scale *= crosshairCfg.scaleMul;
+
+		float thickness = crosshairCfg.thicknessPx * scale;
+		float gap = crosshairCfg.gapPx * scale;
+
+		VertexDataStruct v;
+		v.PositionData.reserve(6 * (1 + (int)crosshairCfg.arms.size()));
+		v.ColorData.reserve(6 * (1 + (int)crosshairCfg.arms.size()));
+
+		const float z = 0.0f;
+		const Eigen::Vector3f rgb = crosshairCfg.color;
+
+		auto deg2rad = [](float d) { return d * 3.1415926535f / 180.0f; };
+
+		// TOP (короткая палочка сверху)
+		{
+			float len = crosshairCfg.topLenPx * scale;
+			float ang = deg2rad(crosshairCfg.topAngleDeg);
+
+			// сдвигаем сегмент от центра на gap + len/2 по направлению
+			float dx = std::cos(ang);
+			float dy = std::sin(ang);
+			float mx = cx + dx * (gap + len * 0.5f);
+			float my = cy + dy * (gap + len * 0.5f);
+
+			AppendRotatedRect2D(v, mx, my, len, thickness, ang, z, rgb);
+		}
+
+		// ARMS (2 луча вниз-влево и вниз-вправо)
+		for (auto& a : crosshairCfg.arms)
+		{
+			float len = a.lenPx * scale;
+			float ang = deg2rad(a.angleDeg);
+
+			float dx = std::cos(ang);
+			float dy = std::sin(ang);
+			float mx = cx + dx * (gap + len * 0.5f);
+			float my = cy + dy * (gap + len * 0.5f);
+
+			AppendRotatedRect2D(v, mx, my, len, thickness, ang, z, rgb);
+		}
+
+		crosshairMesh.AssignFrom(v);
+		crosshairMesh.RefreshVBO();
+		crosshairMeshValid = true;
+	}
+
+	void Space::drawCrosshair()
+	{
+		if (!crosshairCfg.enabled) return;
+
+		rebuildCrosshairMeshIfNeeded();
+		if (!crosshairMeshValid) return;
+
+		glDisable(GL_DEPTH_TEST);
+		glEnable(GL_BLEND);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+		renderer.shaderManager.PushShader("defaultColor");
+		renderer.PushProjectionMatrix((float)Environment::width, (float)Environment::height, 0.f, 1.f);
+		renderer.PushMatrix();
+		renderer.LoadIdentity();
+
+		renderer.EnableVertexAttribArray("vPosition");
+		renderer.EnableVertexAttribArray("vColor");
+
+		Eigen::Vector4f uColor(crosshairCfg.color.x(), crosshairCfg.color.y(), crosshairCfg.color.z(), crosshairCfg.alpha);
+		renderer.RenderUniform4fv("uColor", uColor.data());
+
+		renderer.DrawVertexRenderStruct(crosshairMesh);
+
+		renderer.DisableVertexAttribArray("vPosition");
+		renderer.DisableVertexAttribArray("vColor");
+
+		renderer.PopMatrix();
+		renderer.PopProjectionMatrix();
+		renderer.shaderManager.PopShader();
+
+		glDisable(GL_BLEND);
+		glEnable(GL_DEPTH_TEST);
+	}
+
 	int Space::pickTargetId() const
 	{
 		int bestId = -1;
@@ -896,41 +1134,38 @@ namespace ZL
 		Vector3f shooterVel = ForwardFromRotation(Environment::shipState.rotation) * Environment::shipState.velocity;
 		Vector3f targetVel = ForwardFromRotation(st.rotation) * st.velocity;
 
-		// условие "если враг не движется — круг не рисуем"
 		const float minTargetSpeed = 0.5f; // подобрать (в твоих единицах)
 		bool targetMoving = (targetVel.norm() > minTargetSpeed);
+		
+		// альфа круга
+		float leadAlpha = targetMoving ? 1.0f : 0.5f;
 
 		Vector3f leadWorld = shipWorld;
 		bool haveLead = false;
 
-		//if (targetMoving) {
-		//	float tLead = 0.0f;
-		//	if (SolveLeadInterceptTime(shooterPos, shooterVel, shipWorld, targetVel, projectileSpeed, tLead)) {
-		//		// ограничим случаи, чтобы круг не улетал далеко 
-		//		if (tLead > 0.0f && tLead < 8.0f) {
-		//			// подобрать максимум (сек) 
-		//			leadWorld = shipWorld + targetVel * tLead;
-		//			haveLead = true;
-		//		}
-		//	}
-		//}
+		// чтобы круг не улетал далеко: максимум 4 секунды (подстроить под игру)
+		float distToTarget = (Environment::shipState.position - shipWorld).norm();
+		float maxLeadTime = std::clamp((distToTarget / projectileSpeed) * 1.2f, 0.05f, 4.0f);
 
-		if (targetMoving) {
+		if (!targetMoving) {
+			// Цель стоит: рисуем lead прямо на ней, но полупрозрачный
+			leadWorld = shipWorld;
+			haveLead = true;
+		}
+		else {
 			float tLead = 0.0f;
-			float distToTarget = (Environment::shipState.position - shipWorld).norm();
 
-			const float leadMaxDist = 2500.0f; // максимум
-			float allowedDist = min(distToTarget, leadMaxDist);
+			// 1) Пытаемся “правильное” решение перехвата
+			bool ok = SolveLeadInterceptTime(shooterPos, shooterVel, shipWorld, targetVel, projectileSpeed, tLead);
 
-			// + небольшой запас 10–20% чтобы не моргало на границе
-			const float maxLeadTime = (allowedDist / projectileSpeed) * 1.2f;
-
-			if (SolveLeadInterceptTime(shooterPos, shooterVel, shipWorld, targetVel, projectileSpeed, tLead)) {
-				if (tLead > 0.0f && tLead < maxLeadTime) {
-					leadWorld = shipWorld + targetVel * tLead;
-					haveLead = true;
-				}
+			// 2) Если решения нет / оно плохое — fallback (чтобы круг не пропадал при пролёте "вбок")
+			//    Это ключевое изменение: lead всегда будет.
+			if (!ok || !(tLead > 0.0f) || tLead > maxLeadTime) {
+				tLead = std::clamp(distToTarget / projectileSpeed, 0.05f, maxLeadTime);
 			}
+
+			leadWorld = shipWorld + targetVel * tLead;
+			haveLead = true;
 		}
 
 		// 2) проекция
@@ -1006,7 +1241,10 @@ namespace ZL
 
 			renderer.EnableVertexAttribArray("vPosition");
 
-			// рисуем кружок упреждения (только если есть решение)
+			Eigen::Vector4f hudColor = enemyColor;
+			renderer.RenderUniform4fv("uColor", hudColor.data());
+
+
 			if (haveLead) {
 				float leadNdcX, leadNdcY, leadNdcZ, leadClipW;
 				if (projectToNDC(leadWorld, leadNdcX, leadNdcY, leadNdcZ, leadClipW) && leadClipW > 0.0f) {
@@ -1021,28 +1259,30 @@ namespace ZL
 						float thicknessPx = 2.5f;
 						float innerR = max(1.0f, r - thicknessPx);
 						float outerR = r + thicknessPx;
+						Eigen::Vector4f leadColor = enemyColor;
+						leadColor.w() = leadAlpha;
+						renderer.RenderUniform4fv("uColor", leadColor.data());
 
 						VertexDataStruct ring = MakeRing2D(lx, ly, innerR, outerR, 0.0f, 32, enemyColor);
 						hudTempMesh.AssignFrom(ring);
 						renderer.DrawVertexRenderStruct(hudTempMesh);
+
+						renderer.RenderUniform4fv("uColor", hudColor.data());
 					}
 				}
 			}
 
-		
-			// верх-лево: горизонт + вертикаль
+			renderer.EnableVertexAttribArray("vPosition");
+
 			drawBar(left + cornerLen * 0.5f, top, cornerLen, thickness);
 			drawBar(left, top - cornerLen * 0.5f, thickness, cornerLen);
 
-			// верх-право
 			drawBar(right - cornerLen * 0.5f, top, cornerLen, thickness);
 			drawBar(right, top - cornerLen * 0.5f, thickness, cornerLen);
 
-			// низ-лево
 			drawBar(left + cornerLen * 0.5f, bottom, cornerLen, thickness);
 			drawBar(left, bottom + cornerLen * 0.5f, thickness, cornerLen);
 
-			// низ-право
 			drawBar(right - cornerLen * 0.5f, bottom, cornerLen, thickness);
 			drawBar(right, bottom + cornerLen * 0.5f, thickness, cornerLen);
 
@@ -1060,12 +1300,9 @@ namespace ZL
 			return;
 		}
 
-		// 6) Если цель offscreen: рисуем стрелку на краю
-		// dir: куда “смотреть” в NDC
 		float dirX = ndcX;
 		float dirY = ndcY;
 
-		// если позади камеры — разворачиваем направление
 		if (behind) {
 			dirX = -dirX;
 			dirY = -dirY;
@@ -1076,7 +1313,6 @@ namespace ZL
 		dirX /= len;
 		dirY /= len;
 
-		// пересечение луча с прямоугольником [-1..1] с отступом
 		float marginNdc = 0.08f;
 		float maxX = 1.0f - marginNdc;
 		float maxY = 1.0f - marginNdc;
@@ -1091,16 +1327,13 @@ namespace ZL
 		float edgeX = (edgeNdcX * 0.5f + 0.5f) * Environment::width;
 		float edgeY = (edgeNdcY * 0.5f + 0.5f) * Environment::height;
 
-		// лёгкая анимация “зова”: смещение по направлению
 		float bob = std::sin(t * 6.0f) * 6.0f;
 		edgeX += dirX * bob;
 		edgeY += dirY * bob;
 
-		// стрелка как треугольник + маленький “хвост”
 		float arrowLen = 26.0f;
 		float arrowWid = 14.0f;
 
-		// перпендикуляр
 		float px = -dirY;
 		float py = dirX;
 
@@ -1139,23 +1372,18 @@ namespace ZL
 		renderer.PushMatrix();
 		renderer.LoadIdentity();
 
-		// треугольник-стрелка
 		drawTri(tip, left, right);
 
-		// “хвост” (короткая черта)
 		float tailLen = 14.0f;
 		float tailX = edgeX - dirX * 6.0f;
 		float tailY = edgeY - dirY * 6.0f;
-		// хвост рисуем как тонкий прямоугольник, ориентированный примерно по направлению:
-		// (упрощение: горизонт/вертикаль не поворачиваем, но выглядит ок. Хочешь — сделаем поворот матрицей)
+		
 		drawBar(tailX, tailY, max(thickness, tailLen), thickness);
 
 		renderer.PopMatrix();
 		renderer.PopProjectionMatrix();
 		renderer.shaderManager.PopShader();
 
-		// дистанция рядом со стрелкой
-		// (у тебя ещё будет “статично под прицелом” — это просто другой TextView / drawText)
 		{
 			std::string d = std::to_string((int)dist) + "m";
 			float tx = edgeX + px * 18.0f;

src/Space.h

@@ -139,6 +139,42 @@ namespace ZL {
 		int pickTargetId() const; // ???????? ???? (????: ????????? ????? ????????? ?????)
 
 		void clearTextRendererCache();
+
+		// Crosshair HUD
+		struct CrosshairConfig {
+			bool enabled = true;
+			int refW = 1280;
+			int refH = 720;
+			
+			float scaleMul = 1.0f;
+
+			Eigen::Vector3f color = { 1.f, 1.f, 1.f };
+			float alpha = 1.0f;       // cl_crosshairalpha
+			float thicknessPx = 2.0f; // cl_crosshairthickness
+			float gapPx = 10.0f;
+
+			float topLenPx = 14.0f;
+			float topAngleDeg = 90.0f;
+
+			struct Arm { float lenPx; float angleDeg; };
+			std::vector<Arm> arms;
+		};
+
+		CrosshairConfig crosshairCfg;
+		bool crosshairCfgLoaded = false;
+
+		// кеш геометрии
+		VertexRenderStruct crosshairMesh;
+		bool crosshairMeshValid = false;
+		int crosshairLastW = 0, crosshairLastH = 0;
+		float crosshairLastAlpha = -1.0f;
+		float crosshairLastThickness = -1.0f;
+		float crosshairLastGap = -1.0f;
+		float crosshairLastScaleMul = -1.0f;
+
+		bool loadCrosshairConfig(const std::string& path);
+		void rebuildCrosshairMeshIfNeeded();
+		void drawCrosshair();
 	};
 
 

src/network/ClientState.cpp

@@ -169,7 +169,7 @@ void ClientState::apply_lag_compensation(std::chrono::system_clock::time_point n
 
 	while (deltaMsLeftover > 0)
 	{
-		long long miniDelta = 50;
+		long long miniDelta = std::min(50LL, deltaMsLeftover);
 		simulate_physics(miniDelta);
 		deltaMsLeftover -= miniDelta;
 	}
@@ -207,7 +207,7 @@ void ClientState::handle_full_sync(const std::vector<std::string>& parts, int st
 	discreteAngle = std::stoi(parts[startFrom + 13]);
 }
 
-std::string ClientState::formPingMessageContent()
+std::string ClientState::formPingMessageContent() const
 {
 	Eigen::Quaternionf q(rotation);
 

src/network/ClientState.h

@@ -50,7 +50,7 @@ struct ClientState {
 
     void handle_full_sync(const std::vector<std::string>& parts, int startFrom);
 
-    std::string formPingMessageContent();
+    std::string formPingMessageContent() const;
 };
 
 struct ClientStateInterval

src/network/WebSocketClientEmscripten.cpp

@@ -7,8 +7,8 @@
 namespace ZL {
     void WebSocketClientEmscripten::Connect(const std::string& host, uint16_t port) {
         // Формируем URL. Обратите внимание, что в Web часто лучше использовать ws://localhost
-        //std::string url = "ws://" + host + ":" + std::to_string(port);
-        std::string url = "wss://api.spacegame.fishrungames.com";
+        std::string url = "ws://" + host + ":" + std::to_string(port);
+        //std::string url = "wss://api.spacegame.fishrungames.com";
 
         EmscriptenWebSocketCreateAttributes attr = {
             url.c_str(),