💿🐜 Antkeeper source code
https://antkeeper.com
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58 lines
2.0 KiB
58 lines
2.0 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 "constraint-system.hpp"
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ConstraintSystem::ConstraintSystem(ComponentManager* componentManager):
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System(componentManager),
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orbitConstraintGroup(componentManager)
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{}
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ConstraintSystem::~ConstraintSystem()
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{}
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void ConstraintSystem::update(float t, float dt)
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{
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// Solve orbit constraints
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for (const OrbitConstraintGroup::Member* member: *orbitConstraintGroup.getMembers())
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{
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OrbitConstraintComponent* constraint = std::get<0>(member->components);
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TransformComponent* transform = std::get<1>(member->components);
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// Get target transform component
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TransformComponent* target = componentManager->getComponent<TransformComponent>(constraint->target);
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if (!target)
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{
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continue;
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}
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// Calculate rotation quaternion
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Quaternion azimuthRotation = glm::angleAxis(constraint->azimuth, Vector3(0.0f, 1.0f, 0.0f));
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Quaternion elevationRotation = glm::angleAxis(constraint->elevation, Vector3(-1.0f, 0.0f, 0.0f));
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Quaternion rotation = azimuthRotation * elevationRotation;
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// Calculate translation vector
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Vector3 translation = target->transform.translation + rotation * Vector3(0, 0, constraint->distance);
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// Update transform
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transform->transform.translation = translation;
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transform->transform.rotation = rotation;
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}
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}
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