💿🐜 Antkeeper source code
https://antkeeper.com
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263 lines
8.8 KiB
263 lines
8.8 KiB
/*
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* Copyright (C) 2021 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 "resource-loader.hpp"
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#include "resource-manager.hpp"
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#include "renderer/model.hpp"
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#include "entity/components/atmosphere.hpp"
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#include "entity/components/behavior.hpp"
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#include "entity/components/collision.hpp"
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#include "entity/components/terrain.hpp"
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#include "entity/components/transform.hpp"
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#include "entity/components/model.hpp"
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#include "entity/components/orbit.hpp"
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#include "entity/components/blackbody.hpp"
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#include "entity/components/celestial-body.hpp"
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#include "entity/archetype.hpp"
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#include "entity/ebt.hpp"
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#include "resources/json.hpp"
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#include <stdexcept>
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static bool load_component_atmosphere(entity::archetype& archetype, const json& element)
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{
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entity::component::atmosphere component;
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component.exosphere_altitude = 0.0;
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component.index_of_refraction = 0.0;
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component.rayleigh_density = 0.0;
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component.mie_density = 0.0;
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component.rayleigh_scale_height = 0.0;
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component.mie_scale_height = 0.0;
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component.mie_anisotropy = 0.0;
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if (element.contains("exosphere_altitude"))
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component.exosphere_altitude = element["exosphere_altitude"].get<double>();
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if (element.contains("index_of_refraction"))
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component.index_of_refraction = element["index_of_refraction"].get<double>();
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if (element.contains("rayleigh_density"))
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component.rayleigh_density = element["rayleigh_density"].get<double>();
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if (element.contains("mie_density"))
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component.mie_density = element["mie_density"].get<double>();
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if (element.contains("rayleigh_scale_height"))
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component.rayleigh_scale_height = element["rayleigh_scale_height"].get<double>();
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if (element.contains("mie_scale_height"))
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component.mie_scale_height = element["mie_scale_height"].get<double>();
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if (element.contains("mie_anisotropy"))
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component.mie_anisotropy = element["mie_anisotropy"].get<double>();
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archetype.set<entity::component::atmosphere>(component);
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return true;
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}
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static bool load_component_behavior(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
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{
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entity::component::behavior component;
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component.behavior_tree = nullptr;
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if (element.contains("file"))
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{
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component.behavior_tree = resource_manager.load<entity::ebt::node>(element["file"].get<std::string>());
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}
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archetype.set<entity::component::behavior>(component);
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return (component.behavior_tree != nullptr);
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}
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static bool load_component_blackbody(entity::archetype& archetype, const json& element)
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{
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entity::component::blackbody component;
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component.temperature = 0.0;
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if (element.contains("temperature"))
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component.temperature = element["temperature"].get<double>();
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archetype.set<entity::component::blackbody>(component);
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return true;
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}
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static bool load_component_celestial_body(entity::archetype& archetype, const json& element)
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{
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entity::component::celestial_body component;
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component.radius = 0.0;
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component.axial_tilt = 0.0;
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component.axial_rotation = 0.0;
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component.angular_frequency = 0.0;
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if (element.contains("radius"))
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component.radius = element["radius"].get<double>();
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if (element.contains("axial_tilt"))
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component.axial_tilt = element["axial_tilt"].get<double>();
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if (element.contains("axial_rotation"))
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component.axial_rotation = element["axial_rotation"].get<double>();
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if (element.contains("angular_frequency"))
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component.angular_frequency = element["angular_frequency"].get<double>();
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archetype.set<entity::component::celestial_body>(component);
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return true;
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}
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static bool load_component_collision(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
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{
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entity::component::collision component;
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component.mesh = nullptr;
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if (element.contains("file"))
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{
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component.mesh = resource_manager.load<geom::mesh>(element["file"].get<std::string>());
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}
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archetype.set<entity::component::collision>(component);
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return (component.mesh != nullptr);
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}
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static bool load_component_model(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
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{
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entity::component::model component;
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component.instance_count = 0;
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component.layers = ~0;
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if (element.contains("file"))
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{
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component.render_model = resource_manager.load<model>(element["file"].get<std::string>());
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}
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archetype.set<entity::component::model>(component);
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return true;
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}
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static bool load_component_orbit(entity::archetype& archetype, const json& element)
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{
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entity::component::orbit component;
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component.elements.e = 0.0;
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component.elements.a = 0.0;
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component.elements.i = 0.0;
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component.elements.raan = 0.0;
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component.elements.w = 0.0;
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component.elements.ta = 0.0;
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if (element.contains("e"))
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component.elements.e = element["e"].get<double>();
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if (element.contains("a"))
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component.elements.a = element["a"].get<double>();
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if (element.contains("i"))
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component.elements.i = element["i"].get<double>();
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if (element.contains("raan"))
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component.elements.raan = element["raan"].get<double>();
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if (element.contains("w"))
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component.elements.w = element["w"].get<double>();
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if (element.contains("ta"))
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component.elements.ta = element["ta"].get<double>();
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archetype.set<entity::component::orbit>(component);
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return true;
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}
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static bool load_component_transform(entity::archetype& archetype, const json& element)
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{
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entity::component::transform component;
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component.local = math::identity_transform<float>;
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component.warp = true;
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if (element.contains("translation"))
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{
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auto translation = element["translation"];
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component.local.translation.x = translation[0].get<float>();
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component.local.translation.y = translation[1].get<float>();
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component.local.translation.z = translation[2].get<float>();
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}
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if (element.contains("rotation"))
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{
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auto translation = element["rotation"];
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component.local.rotation.w = translation[0].get<float>();
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component.local.rotation.x = translation[1].get<float>();
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component.local.rotation.y = translation[2].get<float>();
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component.local.rotation.z = translation[3].get<float>();
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}
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if (element.contains("scale"))
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{
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auto translation = element["scale"];
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component.local.scale.x = translation[0].get<float>();
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component.local.scale.y = translation[1].get<float>();
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component.local.scale.z = translation[2].get<float>();
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}
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archetype.set<entity::component::transform>(component);
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return true;
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}
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static bool load_component(entity::archetype& archetype, resource_manager& resource_manager, json::const_iterator element)
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{
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if (element.key() == "atmosphere")
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return load_component_atmosphere(archetype, element.value());
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if (element.key() == "behavior")
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return load_component_behavior(archetype, resource_manager, element.value());
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if (element.key() == "blackbody")
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return load_component_blackbody(archetype, element.value());
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if (element.key() == "celestial_body")
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return load_component_celestial_body(archetype, element.value());
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if (element.key() == "collision")
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return load_component_collision(archetype, resource_manager, element.value());
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if (element.key() == "model")
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return load_component_model(archetype, resource_manager, element.value());
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if (element.key() == "orbit")
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return load_component_orbit(archetype, element.value());
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if (element.key() == "transform")
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return load_component_transform(archetype, element.value());
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//throw std::runtime_error("Unknown component type \"" + element.key() + "\"");
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return true;
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}
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template <>
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entity::archetype* resource_loader<entity::archetype>::load(resource_manager* resource_manager, PHYSFS_File* file)
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{
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// Allocate archetype
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entity::archetype* archetype = new entity::archetype(resource_manager->get_archetype_registry());
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// Read file into buffer
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std::size_t size = static_cast<int>(PHYSFS_fileLength(file));
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std::string buffer;
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buffer.resize(size);
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PHYSFS_readBytes(file, &buffer[0], size);
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// Parse JSON data from file buffer
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json data = nlohmann::json::parse(buffer, nullptr, true, true);
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// Load components from table rows
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for (json::const_iterator element = data.cbegin(); element != data.cend(); ++element)
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{
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if (!load_component(*archetype, *resource_manager, element))
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{
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throw std::runtime_error("Failed to load component \"" + element.key() + "\"");
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}
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}
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return archetype;
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}
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