add MessageDispatcher

include/sp/default/DefaultPacketDispatcher.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <sp/default/DefaultPacket.h>
+#include <sp/default/DefaultPacketHandler.h>
+#include <sp/protocol/MessageDispatcher.h>
+
+namespace sp {
+
+using PacketDispatcher = MessageDispatcher<
+	PacketMessage::ParsedOptions::MsgIdType, 
+	PacketMessage, 
+	PacketMessage::ParsedOptions::HandlerType::HandlerT
+	>;
+
+}  // namespace sp

include/sp/protocol/MessageDispatcher.h

@@ -0,0 +1,54 @@
+#pragma once
+
+/**
+ * \file MessageDispatcher.h
+ * \brief File containing the sp::MessageDispatcher class
+ */
+
+#include <map>
+
+namespace sp {
+
+/**
+ * \class MessageDispatcher
+ * \brief Class used to dispatch messages
+ */
+template <typename MessageIdType, typename MessageBase, typename MessageHandler>
+class MessageDispatcher {
+  private:
+	std::map<MessageIdType, std::vector<std::shared_ptr<MessageHandler>>> m_Handlers;
+
+  public:
+	/**
+	 * \brief Constructor
+	 */
+	MessageDispatcher() {}
+
+	/**
+	 * \brief Dispatch a packet
+	 * \param packet The packet to dispatch
+	 */
+	void Dispatch(const MessageBase& a_Message);
+
+	/**
+	 * \brief Register a packet handler
+	 * \param type The packet type
+	 * \param handler The packet handler
+	 */
+	void RegisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler);
+	/**
+	 * \brief Unregister a packet handler
+	 * \param type The packet type
+	 * \param handler The packet handler
+	 */
+	void UnregisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler);
+	/**
+	 * \brief Unregister a packet handler
+	 * \param handler The packet handler
+	 */
+	void UnregisterHandler(const std::shared_ptr<MessageHandler>& a_Handler);
+};
+
+#include <sp/protocol/message/MessageDispatcherImpl.inl>
+
+}  // namespace blitz

include/sp/protocol/message/MessageDispatcherImpl.inl

@@ -0,0 +1,34 @@
+#pragma once
+
+template <typename MessageIdType, typename MessageBase, typename MessageHandler>
+void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::RegisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler) {
+	auto found = std::find(m_Handlers[a_MessageType].begin(), m_Handlers[a_MessageType].end(), a_Handler);
+	if (found == m_Handlers[a_MessageType].end())
+		m_Handlers[a_MessageType].push_back(a_Handler);
+}
+
+template <typename MessageIdType, typename MessageBase, typename MessageHandler>
+void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::UnregisterHandler(MessageIdType a_MessageType, const std::shared_ptr<MessageHandler>& a_Handler) {
+	auto found = std::find(m_Handlers[a_MessageType].begin(), m_Handlers[a_MessageType].end(), a_Handler);
+	if (found != m_Handlers[a_MessageType].end())
+		m_Handlers[a_MessageType].erase(found);
+}
+
+template <typename MessageIdType, typename MessageBase, typename MessageHandler>
+void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::UnregisterHandler(const std::shared_ptr<MessageHandler>& a_Handler) {
+	for (auto& pair : m_Handlers) {
+		if (pair.second.empty())
+			continue;
+
+		MessageIdType type = pair.first;
+
+		m_Handlers[type].erase(std::remove(m_Handlers[type].begin(), m_Handlers[type].end(), a_Handler), m_Handlers[type].end());
+	}
+}
+
+template <typename MessageIdType, typename MessageBase, typename MessageHandler>
+void MessageDispatcher<MessageIdType, MessageBase, MessageHandler>::Dispatch(const MessageBase& a_Message) {
+	MessageIdType type = a_Message.GetId();
+	for (auto& handler : m_Handlers[type])
+		a_Message.Dispatch(*handler);
+}