💿🐜 Antkeeper source code
https://antkeeper.com
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45 lines
1.2 KiB
45 lines
1.2 KiB
/*
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* Copyright (C) 2017-2019 Christopher J. Howard
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*
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* This file is part of Antkeeper Source Code.
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*
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* Antkeeper Source Code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper Source Code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "state-machine.hpp"
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StateMachine::StateMachine():
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previousState(nullptr),
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currentState(nullptr)
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{}
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void StateMachine::changeState(const State* nextState)
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{
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// Call exit function of current state
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if (currentState && currentState->back())
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{
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currentState->back()();
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}
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// Change state
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previousState = currentState;
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currentState = nextState;
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// Call enter function of next state
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if (currentState && currentState->front())
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{
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currentState->front()();
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}
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}
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