Ported the local prediction player controller component

2021-05-05 20:07:16 -07:00
parent bbe3fcfdd9
commit a1fe8fe419
55 changed files with 1164 additions and 275 deletions
@@ -13,9 +13,12 @@
 #pragma once

 #include <Source/AutoGen/LocalPredictionPlayerInputComponent.AutoComponent.h>
+#include <Source/Components/NetBindComponent.h>

 namespace Multiplayer
 {
+    using CorrectionEvent = AZ::Event<>;
+
    class LocalPredictionPlayerInputComponent
        : public LocalPredictionPlayerInputComponentBase
    {
@@ -24,24 +27,87 @@ namespace Multiplayer

        static void Reflect([[maybe_unused]] AZ::ReflectContext* context);

-        void OnInit() override {}
-        void OnActivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override {}
-        void OnDeactivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override {}
-
-
+        void OnInit() override;
+        void OnActivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override;
+        void OnDeactivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override;
    };

    class LocalPredictionPlayerInputComponentController
        : public LocalPredictionPlayerInputComponentControllerBase
    {
    public:
-        LocalPredictionPlayerInputComponentController(LocalPredictionPlayerInputComponent& parent) : LocalPredictionPlayerInputComponentControllerBase(parent) {}
+        LocalPredictionPlayerInputComponentController(LocalPredictionPlayerInputComponent& parent);

-        void OnActivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override {}
-        void OnDeactivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override {}
+        void OnActivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override;
+        void OnDeactivate([[maybe_unused]] Multiplayer::EntityIsMigrating entityIsMigrating) override;

-        void HandleSendClientInput(const Multiplayer::NetworkInputVector& inputArray, const uint32_t& stateHash, const AzNetworking::PacketEncodingBuffer& clientState) override;
-        void HandleSendMigrateClientInput(const Multiplayer::MigrateNetworkInputVector& inputArray) override;
-        void HandleSendClientInputCorrection(const Multiplayer::ClientInputId& inputId, const AzNetworking::PacketEncodingBuffer& correction) override;
+        void HandleSendClientInput
+        (
+            AzNetworking::IConnection* invokingConnection,
+            const Multiplayer::NetworkInputVector& inputArray,
+            const AZ::HashValue64& stateHash,
+            const AzNetworking::PacketEncodingBuffer& clientState
+        ) override;
+
+        void HandleSendMigrateClientInput
+        (
+            AzNetworking::IConnection* invokingConnection,
+            const Multiplayer::MigrateNetworkInputVector& inputArray
+        ) override;
+
+        void HandleSendClientInputCorrection
+        (
+            AzNetworking::IConnection* invokingConnection,
+            const Multiplayer::ClientInputId& inputId,
+            const AzNetworking::PacketEncodingBuffer& correction
+        ) override;
+
+        //! Return true if we're currently replaying inputs after a correction.
+        //! If this value returns true, effects, audio, and other cosmetic triggers should be suppressed
+        //! @return true if we're within correction scope and replaying inputs
+        bool IsReplayingInput() const;
+
+        //! Return true if we're currently migrating from one host to another.
+        //! @return boolean true if we're currently migrating from one host to another
+        bool IsMigrating() const;
+
+        ClientInputId GetLastInputId() const;
+        HostFrameId GetInputFrameId(const NetworkInput& input) const;
+
+        void CorrectionEventAddHandle(CorrectionEvent::Handler& handler);
+
+    private:
+
+        void OnMigrateStart(ClientInputId migratedInputId);
+        void OnMigrateEnd();
+        void UpdateAutonomous(AZ::TimeMs deltaTimeMs);
+        void UpdateBankedTime(AZ::TimeMs deltaTimeMs);
+
+        // Implicitly sorted player input history, back() is the input that corresponds to the latest client input Id
+        NetworkInputHistory m_inputHistory;
+
+        // Anti-cheat accumulator for clients who purposely mess with their clock rate
+        NetworkInputVector m_lastInputReceived;
+
+        AZ::ScheduledEvent m_autonomousUpdateEvent; // Drives autonomous input collection
+        AZ::ScheduledEvent m_updateBankedTimeEvent; // Drives authority bank time updates
+
+        CorrectionEvent m_correctionEvent;
+        EntityMigrationStartEvent::Handler m_migrateStartHandler;
+        EntityMigrationEndEvent::Handler m_migrateEndHandler;
+
+        double m_moveAccumulator = 0.0;
+        double m_clientBankedTime = 0.0;
+
+        AZ::TimeMs m_lastInputReceivedTimeMs = AZ::TimeMs{ 0 };
+        AZ::TimeMs m_lastCorrectionSentTimeMs = AZ::TimeMs{ 0 };
+
+        ClientInputId m_clientInputId = ClientInputId{ 0 };
+        ClientInputId m_lastCorrectionInputId = ClientInputId{ 0 };
+        ClientInputId m_lastMigratedInputId = ClientInputId{ 0 }; // Used to resend inputs that were queued during a migration event
+        HostFrameId   m_serverMigrateFrameId = InvalidHostFrameId;
+
+        bool m_replayingInput = false; // True if we're replaying inputs under a correction event (use this to suppress effects or audio)
+        bool m_allowMigrateClientInput = false; // True if this component was migrated, we will allow the client to send us migrated inputs (one time only)
    };
 }