/*
* Copyright (C) 2021 Christopher J. Howard
*
* This file is part of Antkeeper source code.
*
* Antkeeper source code is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Antkeeper source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Antkeeper source code. If not, see .
*/
#include "resource-loader.hpp"
#include "resource-manager.hpp"
#include "renderer/model.hpp"
#include "entity/components/atmosphere.hpp"
#include "entity/components/behavior.hpp"
#include "entity/components/collision.hpp"
#include "entity/components/terrain.hpp"
#include "entity/components/transform.hpp"
#include "entity/components/model.hpp"
#include "entity/components/orbit.hpp"
#include "entity/components/blackbody.hpp"
#include "entity/components/celestial-body.hpp"
#include "entity/archetype.hpp"
#include "entity/ebt.hpp"
#include "resources/json.hpp"
#include
static bool load_component_atmosphere(entity::archetype& archetype, const json& element)
{
entity::component::atmosphere component;
component.exosphere_altitude = 0.0;
component.index_of_refraction = 0.0;
component.rayleigh_density = 0.0;
component.mie_density = 0.0;
component.rayleigh_scale_height = 0.0;
component.mie_scale_height = 0.0;
component.mie_anisotropy = 0.0;
if (element.contains("exosphere_altitude"))
component.exosphere_altitude = element["exosphere_altitude"].get();
if (element.contains("index_of_refraction"))
component.index_of_refraction = element["index_of_refraction"].get();
if (element.contains("rayleigh_density"))
component.rayleigh_density = element["rayleigh_density"].get();
if (element.contains("mie_density"))
component.mie_density = element["mie_density"].get();
if (element.contains("rayleigh_scale_height"))
component.rayleigh_scale_height = element["rayleigh_scale_height"].get();
if (element.contains("mie_scale_height"))
component.mie_scale_height = element["mie_scale_height"].get();
if (element.contains("mie_anisotropy"))
component.mie_anisotropy = element["mie_anisotropy"].get();
archetype.set(component);
return true;
}
static bool load_component_behavior(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
{
entity::component::behavior component;
component.behavior_tree = nullptr;
if (element.contains("file"))
{
component.behavior_tree = resource_manager.load(element["file"].get());
}
archetype.set(component);
return (component.behavior_tree != nullptr);
}
static bool load_component_blackbody(entity::archetype& archetype, const json& element)
{
entity::component::blackbody component;
component.temperature = 0.0;
if (element.contains("temperature"))
component.temperature = element["temperature"].get();
archetype.set(component);
return true;
}
static bool load_component_celestial_body(entity::archetype& archetype, const json& element)
{
entity::component::celestial_body component;
component.radius = 0.0;
component.axial_tilt = 0.0;
component.axial_rotation = 0.0;
component.angular_frequency = 0.0;
if (element.contains("radius"))
component.radius = element["radius"].get();
if (element.contains("axial_tilt"))
component.axial_tilt = element["axial_tilt"].get();
if (element.contains("axial_rotation"))
component.axial_rotation = element["axial_rotation"].get();
if (element.contains("angular_frequency"))
component.angular_frequency = element["angular_frequency"].get();
archetype.set(component);
return true;
}
static bool load_component_collision(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
{
entity::component::collision component;
component.mesh = nullptr;
if (element.contains("file"))
{
component.mesh = resource_manager.load(element["file"].get());
}
archetype.set(component);
return (component.mesh != nullptr);
}
static bool load_component_model(entity::archetype& archetype, resource_manager& resource_manager, const json& element)
{
entity::component::model component;
component.instance_count = 0;
component.layers = ~0;
if (element.contains("file"))
{
component.render_model = resource_manager.load(element["file"].get());
}
archetype.set(component);
return true;
}
static bool load_component_orbit(entity::archetype& archetype, const json& element)
{
entity::component::orbit component;
component.elements.e = 0.0;
component.elements.a = 0.0;
component.elements.i = 0.0;
component.elements.raan = 0.0;
component.elements.w = 0.0;
component.elements.ta = 0.0;
if (element.contains("e"))
component.elements.e = element["e"].get();
if (element.contains("a"))
component.elements.a = element["a"].get();
if (element.contains("i"))
component.elements.i = element["i"].get();
if (element.contains("raan"))
component.elements.raan = element["raan"].get();
if (element.contains("w"))
component.elements.w = element["w"].get();
if (element.contains("ta"))
component.elements.ta = element["ta"].get();
archetype.set(component);
return true;
}
static bool load_component_transform(entity::archetype& archetype, const json& element)
{
entity::component::transform component;
component.local = math::identity_transform;
component.warp = true;
if (element.contains("translation"))
{
auto translation = element["translation"];
component.local.translation.x = translation[0].get();
component.local.translation.y = translation[1].get();
component.local.translation.z = translation[2].get();
}
if (element.contains("rotation"))
{
auto translation = element["rotation"];
component.local.rotation.w = translation[0].get();
component.local.rotation.x = translation[1].get();
component.local.rotation.y = translation[2].get();
component.local.rotation.z = translation[3].get();
}
if (element.contains("scale"))
{
auto translation = element["scale"];
component.local.scale.x = translation[0].get();
component.local.scale.y = translation[1].get();
component.local.scale.z = translation[2].get();
}
archetype.set(component);
return true;
}
static bool load_component(entity::archetype& archetype, resource_manager& resource_manager, json::const_iterator element)
{
if (element.key() == "atmosphere")
return load_component_atmosphere(archetype, element.value());
if (element.key() == "behavior")
return load_component_behavior(archetype, resource_manager, element.value());
if (element.key() == "blackbody")
return load_component_blackbody(archetype, element.value());
if (element.key() == "celestial_body")
return load_component_celestial_body(archetype, element.value());
if (element.key() == "collision")
return load_component_collision(archetype, resource_manager, element.value());
if (element.key() == "model")
return load_component_model(archetype, resource_manager, element.value());
if (element.key() == "orbit")
return load_component_orbit(archetype, element.value());
if (element.key() == "transform")
return load_component_transform(archetype, element.value());
//throw std::runtime_error("Unknown component type \"" + element.key() + "\"");
return true;
}
template <>
entity::archetype* resource_loader::load(resource_manager* resource_manager, PHYSFS_File* file)
{
// Allocate archetype
entity::archetype* archetype = new entity::archetype(resource_manager->get_archetype_registry());
// Read file into buffer
std::size_t size = static_cast(PHYSFS_fileLength(file));
std::string buffer;
buffer.resize(size);
PHYSFS_readBytes(file, &buffer[0], size);
// Parse JSON data from file buffer
json data = nlohmann::json::parse(buffer, nullptr, true, true);
// Load components from table rows
for (json::const_iterator element = data.cbegin(); element != data.cend(); ++element)
{
if (!load_component(*archetype, *resource_manager, element))
{
throw std::runtime_error("Failed to load component \"" + element.key() + "\"");
}
}
return archetype;
}