💿🐜 Antkeeper source code
https://antkeeper.com
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201 lines
6.3 KiB
201 lines
6.3 KiB
/*
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* Copyright (C) 2020 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 "string-table.hpp"
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#include "renderer/model.hpp"
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#include "entity/components/behavior-component.hpp"
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#include "entity/components/collision-component.hpp"
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#include "entity/components/terrain-component.hpp"
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#include "entity/components/transform-component.hpp"
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#include "entity/components/model-component.hpp"
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#include "entity/components/nest-component.hpp"
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#include "entity/archetype.hpp"
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#include "behavior/ebt.hpp"
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#include <sstream>
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#include <stdexcept>
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using namespace ecs;
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static bool load_behavior_component(archetype& archetype, resource_manager& resource_manager, const std::vector<std::string>& parameters)
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{
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if (parameters.size() != 2)
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{
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throw std::runtime_error("load_behavior_component(): Invalid parameter count.");
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}
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std::string filename = parameters[1];
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behavior_component component;
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component.behavior_tree = resource_manager.load<ebt::node>(filename);
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if (!component.behavior_tree)
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{
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std::string message = std::string("load_behavior_component(): Failed to load behavior tree \"") + filename + std::string("\"");
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throw std::runtime_error(message);
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}
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archetype.set<behavior_component>(component);
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return true;
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}
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static bool load_collision_component(archetype& archetype, resource_manager& resource_manager, const std::vector<std::string>& parameters)
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{
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if (parameters.size() != 2)
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{
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throw std::runtime_error("load_collision_component(): Invalid parameter count.");
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}
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std::string filename = parameters[1];
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collision_component component;
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component.mesh = resource_manager.load<mesh>(filename);
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if (!component.mesh)
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{
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std::string message = std::string("load_collision_component(): Failed to load model \"") + filename + std::string("\"");
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throw std::runtime_error(message);
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}
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archetype.set<collision_component>(component);
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return true;
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}
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static bool load_model_component(archetype& archetype, resource_manager& resource_manager, const std::vector<std::string>& parameters)
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{
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if (parameters.size() != 2)
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{
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throw std::runtime_error("load_model_component(): Invalid parameter count.");
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}
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std::string filename = parameters[1];
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model_component component;
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component.model = resource_manager.load<model>(filename);
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component.instance_count = 0;
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if (!component.model)
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{
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std::string message = std::string("load_model_component(): Failed to load model \"") + filename + std::string("\"");
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throw std::runtime_error(message);
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}
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archetype.set<model_component>(component);
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return true;
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}
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static bool load_nest_component(archetype& archetype, const std::vector<std::string>& parameters)
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{
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nest_component component;
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archetype.set<nest_component>(component);
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return true;
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}
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static bool load_terrain_component(archetype& archetype, const std::vector<std::string>& parameters)
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{
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if (parameters.size() != 4)
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{
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throw std::runtime_error("load_terrain_component(): Invalid parameter count.");
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}
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terrain_component component;
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component.subdivisions = std::stoi(parameters[1]);
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component.x = std::stoi(parameters[2]);
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component.z = std::stoi(parameters[3]);
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archetype.set<terrain_component>(component);
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return true;
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}
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static bool load_transform_component(archetype& archetype, const std::vector<std::string>& parameters)
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{
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if (parameters.size() != 11)
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{
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throw std::runtime_error("load_transform_component(): Invalid parameter count.");
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}
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std::stringstream stream;
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for (std::size_t i = 1; i < parameters.size(); ++i)
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{
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stream << parameters[i];
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if (i < parameters.size() - 1)
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stream << ' ';
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}
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transform_component component;
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stream >> component.transform.translation.x;
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stream >> component.transform.translation.y;
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stream >> component.transform.translation.z;
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stream >> component.transform.rotation.w;
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stream >> component.transform.rotation.x;
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stream >> component.transform.rotation.y;
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stream >> component.transform.rotation.z;
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stream >> component.transform.scale.x;
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stream >> component.transform.scale.y;
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stream >> component.transform.scale.z;
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component.warp = true;
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archetype.set<transform_component>(component);
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return true;
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}
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static bool load_component(archetype& archetype, resource_manager& resource_manager, const std::vector<std::string>& parameters)
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{
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if (parameters[0] == "behavior") return load_behavior_component(archetype, resource_manager, parameters);
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if (parameters[0] == "collision") return load_collision_component(archetype, resource_manager, parameters);
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if (parameters[0] == "model") return load_model_component(archetype, resource_manager, parameters);
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if (parameters[0] == "nest") return load_nest_component(archetype, parameters);
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if (parameters[0] == "terrain") return load_terrain_component(archetype, parameters);
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if (parameters[0] == "transform") return load_transform_component(archetype, parameters);
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std::string message = std::string("load_component(): Unknown component type \"") + parameters[0] + std::string("\"");
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throw std::runtime_error(message);
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}
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template <>
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archetype* resource_loader<archetype>::load(resource_manager* resource_manager, std::istream* is)
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{
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ecs::archetype* archetype = new ecs::archetype(resource_manager->get_archetype_registry());
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// Load string table from input stream
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string_table* table = resource_loader<string_table>::load(resource_manager, is);
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// Ensure table is not empty.
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if (!table || table->empty())
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{
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delete table;
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return nullptr;
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}
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// Load components from table rows
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for (const string_table_row& row: *table)
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{
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// Skip empty rows and comments
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if (row.empty() || row[0].empty() || row[0][0] == '#')
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{
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continue;
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}
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load_component(*archetype, *resource_manager, row);
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}
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return archetype;
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}
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