44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
/*
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* SPDX-FileCopyrightText: Dora "cat" <cat@thenight.club>
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public License,
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* v. 2.0. If a copy of the MPL was not distributed with this file, You can
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* obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <Systems/ECS.hpp>
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#include <Systems/ECS/BuiltinComponents.hpp>
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#include <Systems/Random.hpp>
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#include <optional>
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using namespace Tourmaline::Systems::ECS;
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// It is preferable to send a copy of the UUID instead of reference since
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// the entity itself may be destroyed in the memory
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Entity World::CreateEntity() {
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auto newEntity = entityComponentMap.insert(
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Random::GenerateUUID(), typeid(Tourmaline::Systems::Components::Position),
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Tourmaline::Systems::Components::Position());
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return Entity(std::get<0>(newEntity));
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}
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bool World::EntityExists(const Entity &entity) noexcept {
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bool exists = false;
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entityComponentMap.scan(
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[&exists, entity](const Tourmaline::Type::UUID ¤tEntity,
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const std::type_index &, std::any &) -> bool {
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if (currentEntity == entity) {
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exists = true;
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return true;
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}
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return false;
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});
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return exists;
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}
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bool World::DestroyEntity(Entity entity) {
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return entityComponentMap.remove(entity, std::nullopt);
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}
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