64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#pragma once
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#include <td/game/World.h>
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#include <optional>
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namespace td {
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namespace sim {
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using GameHistory = std::vector<td::protocol::LockStep>;
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using GameBuffer = std::vector<std::optional<td::protocol::LockStep>>;
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// TODO: OnEnd signal
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class ClientSimulation : public protocol::PacketHandler {
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private:
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std::uint64_t m_StepTime;
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game::World& m_World;
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GameBuffer m_History;
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std::uint64_t m_CurrentTime;
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std::uint64_t m_LastTime;
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std::size_t m_CurrentStep;
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std::shared_ptr<WorldSnapshot> m_LastSnapshot;
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std::uint64_t m_LastValidStep;
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static const protocol::LockStep EMPTY_LOCKSTEP;
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public:
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/**
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* \brief Replay constructor
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* \param a_StepTime in ms
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*/
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ClientSimulation(game::World& a_World, GameHistory&& a_History, std::uint64_t a_StepTime);
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/**
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* \brief Live update constructor (continuous game updates)
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* \param a_StepTime in ms
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*/
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ClientSimulation(game::World& a_World, std::uint64_t a_StepTime);
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/**
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* \return the progress [0-1] between two steps
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*/
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float Update();
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void Handle(const protocol::packets::LockStepsPacket& a_LockSteps) override;
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void Handle(const protocol::packets::PredictCommandPacket& a_Predict) override;
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private:
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void Step();
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/**
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* \brief Ticks a_Count times
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*/
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void FastForward(std::size_t a_Count);
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/**
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* \brief Tries to recompute simulation if needed (for example in late command receival)
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*/
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void FastReplay();
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};
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} // namespace sim
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} // namespace td
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