First crack at the multiplayer component registry to allow multiplayer components to live in any gem

Gems/Multiplayer/Code/Source/Components/MultiplayerComponentRegistry.cpp

@@ -0,0 +1,58 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#include <Source/Components/MultiplayerComponentRegistry.h>
+
+namespace Multiplayer
+{
+    NetComponentId MultiplayerComponentRegistry::RegisterMultiplayerComponent(const ComponentData& componentData)
+    {
+        NetComponentId netComponentId = m_nextNetComponentId++;
+        m_componentData[netComponentId] = componentData;
+        return netComponentId;
+    }
+
+    const char* MultiplayerComponentRegistry::GetComponentGemName(NetComponentId netComponentId) const
+    {
+        const ComponentData& componentData = GetMultiplayerComponentData(netComponentId);
+        return componentData.m_gemName.GetCStr();
+    }
+
+    const char* MultiplayerComponentRegistry::GetComponentName(NetComponentId netComponentId) const
+    {
+        const ComponentData& componentData = GetMultiplayerComponentData(netComponentId);
+        return componentData.m_componentName.GetCStr();
+    }
+
+    const char* MultiplayerComponentRegistry::GetComponentPropertyName(NetComponentId netComponentId, uint16_t propertyIndex) const
+    {
+        const ComponentData& componentData = GetMultiplayerComponentData(netComponentId);
+        return componentData.m_componentPropertyNameLookupFunction(propertyIndex);
+    }
+
+    const char* MultiplayerComponentRegistry::GetComponentRpcName(NetComponentId netComponentId, uint16_t rpcId) const
+    {
+        const ComponentData& componentData = GetMultiplayerComponentData(netComponentId);
+        return componentData.m_componentRpcNameLookupFunction(rpcId);
+    }
+
+    const MultiplayerComponentRegistry::ComponentData& MultiplayerComponentRegistry::GetMultiplayerComponentData(NetComponentId netComponentId) const
+    {
+        static ComponentData nullComponentData;
+        auto it = m_componentData.find(netComponentId);
+        if (it != m_componentData.end())
+        {
+            return it->second;
+        }
+        return nullComponentData;
+    }
+}

Gems/Multiplayer/Code/Source/Components/MultiplayerComponentRegistry.h

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+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#pragma once
+
+#include <AzCore/Name/Name.h>
+#include <AzCore/std/containers/unordered_map.h>
+#include <Source/Components/MultiplayerComponent.h>
+
+namespace Multiplayer
+{
+    class MultiplayerComponentRegistry
+    {
+    public:
+        using NameLookupFunction = AZStd::function<const char*(uint16_t index)>;
+        struct ComponentData
+        {
+            AZ::Name m_gemName;
+            AZ::Name m_componentName;
+            NameLookupFunction m_componentPropertyNameLookupFunction;
+            NameLookupFunction m_componentRpcNameLookupFunction;
+        };
+
+        //! Registers a multiplayer component with the multiplayer system.
+        //! @param  componentData the data associated with the component being registered
+        //! @return the NetComponentId assigned to this particular component
+        NetComponentId RegisterMultiplayerComponent(const ComponentData& componentData);
+
+        //! Returns the gem name associated with the provided NetComponentId.
+        //! @param  netComponentId the NetComponentId to return the gem name of
+        //! @return the name of the gem that contains the requested component
+        const char* GetComponentGemName(NetComponentId netComponentId) const;
+
+        //! Returns the component name associated with the provided NetComponentId.
+        //! @param  netComponentId the NetComponentId to return the component name of
+        //! @return the name of the component
+        const char* GetComponentName(NetComponentId netComponentId) const;
+
+        //! Returns the property name associated with the provided NetComponentId and propertyIndex.
+        //! @param  netComponentId the NetComponentId to return the property name of
+        //! @param  propertyIndex  the index off the network property to return the property name of
+        //! @return the name of the network property
+        const char* GetComponentPropertyName(NetComponentId netComponentId, uint16_t propertyIndex) const;
+
+        //! Returns the Rpc name associated with the provided NetComponentId and rpcId.
+        //! @param  netComponentId the NetComponentId to return the property name of
+        //! @param  rpcId          the index off the rpc to return the rpc name of
+        //! @return the name of the requested rpc
+        const char* GetComponentRpcName(NetComponentId netComponentId, uint16_t rpcId) const;
+
+        //! Retrieves the stored component data for a given NetComponentId.
+        //! @param  netComponentId the NetComponentId to return component data for
+        //! @return reference to the requested component data, an empty container will be returned if the NetComponentId does not exist
+        const ComponentData& GetMultiplayerComponentData(NetComponentId netComponentId) const;
+
+    private:
+        NetComponentId m_nextNetComponentId = NetComponentId{ 0 };
+        AZStd::unordered_map<NetComponentId, ComponentData> m_componentData;
+    };
+}