/*
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* Copyright (C) 2023 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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#ifndef ANTKEEPER_GAME_EASE_TO_CONSTRAINT_HPP
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#define ANTKEEPER_GAME_EASE_TO_CONSTRAINT_HPP
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#include <engine/entity/id.hpp>
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#include <engine/math/vector.hpp>
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/**
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* Eases toward a target entity.
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*/
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struct ease_to_constraint
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{
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/// Target entity ID.
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entity::id target;
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/// Start position.
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math::fvec3 start;
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/// Total duration of the ease.
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float duration;
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/// Elapsed time since ease began.
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float t;
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/// Pointer to the interpolation function.
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math::fvec3 (*function)(const math::fvec3&, const math::fvec3&, float);
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};
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#endif // ANTKEEPER_GAME_EASE_TO_CONSTRAINT_HPP
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