76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_CORE_STATEMACHINE_HPP
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#define NAZARA_CORE_STATEMACHINE_HPP
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#include <NazaraUtils/Prerequisites.hpp>
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#include <Nazara/Core/State.hpp>
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#include <Nazara/Core/Time.hpp>
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#include <memory>
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#include <vector>
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namespace Nz
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{
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class StateMachine
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{
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public:
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inline StateMachine(std::shared_ptr<State> initialState = {});
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StateMachine(const StateMachine&) = delete;
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StateMachine(StateMachine&&) = default;
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inline ~StateMachine();
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inline void ChangeState(std::shared_ptr<State> state);
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inline void Disable(std::shared_ptr<State> state);
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inline void Enable(std::shared_ptr<State> state);
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inline bool IsStateEnabled(const State* state) const;
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inline bool IsTopState(const State* state) const;
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inline void PopState();
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inline void PopStatesUntil(std::shared_ptr<State> state);
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inline void PushState(std::shared_ptr<State> state, bool enabled = true);
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inline void ResetState(std::shared_ptr<State> state);
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inline bool Update(Time elapsedTime);
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StateMachine& operator=(StateMachine&& fsm) = default;
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StateMachine& operator=(const StateMachine&) = delete;
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private:
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enum class TransitionType
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{
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Disable,
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Enable,
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Pop,
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PopUntil,
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Push,
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PushDisabled,
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};
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struct StateInfo
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{
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std::shared_ptr<State> state;
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bool enabled;
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};
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struct StateTransition
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{
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std::shared_ptr<State> state;
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TransitionType type;
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};
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std::vector<StateInfo> m_states;
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std::vector<StateTransition> m_transitions;
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};
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}
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#include <Nazara/Core/StateMachine.inl>
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#endif // NAZARA_CORE_STATEMACHINE_HPP
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