💿🐜 Antkeeper source code
https://antkeeper.com
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626 lines
19 KiB
626 lines
19 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 "game/states/loading.hpp"
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#include "application.hpp"
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#include "astro/illuminance.hpp"
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#include "color/color.hpp"
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#include "entity/components/atmosphere.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/components/orbit.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/systems/astronomy.hpp"
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#include "entity/systems/orbit.hpp"
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#include "entity/commands.hpp"
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#include "entity/archetype.hpp"
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#include "game/states/nuptial-flight.hpp"
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#include "game/states/splash.hpp"
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#include "game/states/forage.hpp"
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#include "game/controls.hpp"
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#include "geom/spherical.hpp"
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#include "gl/drawing-mode.hpp"
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#include "gl/vertex-array.hpp"
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#include "gl/vertex-attribute.hpp"
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#include "gl/vertex-buffer.hpp"
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#include "physics/light/photometry.hpp"
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#include "physics/orbit/orbit.hpp"
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#include "render/material.hpp"
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#include "render/model.hpp"
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#include "render/passes/shadow-map-pass.hpp"
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#include "render/vertex-attribute.hpp"
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#include "resources/resource-manager.hpp"
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#include "scene/ambient-light.hpp"
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#include "scene/directional-light.hpp"
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#include "utility/timestamp.hpp"
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#include "type/type.hpp"
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#include "configuration.hpp"
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#include <stb/stb_image_write.h>
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#include <unordered_set>
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#include <codecvt>
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#include "gl/texture-wrapping.hpp"
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#include "gl/texture-filter.hpp"
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#include "scene/text.hpp"
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#include "render/material-flags.hpp"
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namespace game {
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namespace state {
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namespace loading {
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/// Loads control profile and calibrates gamepads
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static void load_controls(game::context* ctx);
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/// Loads typefaces and builds fonts
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static void load_fonts(game::context* ctx);
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/// Creates the universe and solar system.
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static void cosmogenesis(game::context* ctx);
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/// Creates a sun.
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static void heliogenesis(game::context* ctx);
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/// Creates a planet.
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static void planetogenesis(game::context* ctx);
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/// Creates a moon.
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static void selenogenesis(game::context* ctx);
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/// Creates fixed stars.
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static void extrasolar_heliogenesis(game::context* ctx);
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/// Creates an ant colony
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static void colonigenesis(game::context* ctx);
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void enter(game::context* ctx)
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{
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// Load controls
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ctx->logger->push_task("Loading controls");
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try
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{
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load_controls(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Load fonts
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ctx->logger->push_task("Loading fonts");
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try
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{
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load_fonts(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Create universe
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ctx->logger->push_task("Creating the universe");
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try
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{
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cosmogenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Determine next game state
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application::state next_state;
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if (ctx->option_quick_start.has_value())
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{
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next_state.name = "forage";
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next_state.enter = std::bind(game::state::forage::enter, ctx);
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next_state.exit = std::bind(game::state::forage::exit, ctx);
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}
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else
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{
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next_state.name = "splash";
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next_state.enter = std::bind(game::state::splash::enter, ctx);
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next_state.exit = std::bind(game::state::splash::exit, ctx);
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}
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// Queue next game state
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ctx->app->queue_state(next_state);
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}
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void exit(game::context* ctx)
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{}
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void load_controls(game::context* ctx)
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{
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// If a control profile is set in the config file
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if (ctx->config->contains("control_profile"))
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{
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// Load control profile
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json* profile = ctx->resource_manager->load<json>((*ctx->config)["control_profile"].get<std::string>());
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// Apply control profile
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if (profile)
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{
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game::apply_control_profile(ctx, *profile);
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}
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}
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// Calibrate gamepads
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for (input::gamepad* gamepad: ctx->app->get_gamepads())
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{
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ctx->logger->push_task("Loading calibration for gamepad " + gamepad->get_guid());
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json* calibration = game::load_gamepad_calibration(ctx, gamepad);
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if (!calibration)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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ctx->logger->push_task("Generating default calibration for gamepad " + gamepad->get_guid());
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json default_calibration = game::default_gamepad_calibration();
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apply_gamepad_calibration(gamepad, default_calibration);
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if (!save_gamepad_calibration(ctx, gamepad, default_calibration))
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ctx->logger->pop_task(EXIT_FAILURE);
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else
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ctx->logger->pop_task(EXIT_SUCCESS);
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}
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else
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{
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ctx->logger->pop_task(EXIT_SUCCESS);
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apply_gamepad_calibration(gamepad, *calibration);
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}
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}
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// Toggle fullscreen
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ctx->controls["toggle_fullscreen"]->set_activated_callback
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(
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[ctx]()
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{
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bool fullscreen = !ctx->app->is_fullscreen();
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ctx->app->set_fullscreen(fullscreen);
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if (!fullscreen)
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{
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int2 resolution;
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resolution.x = (*ctx->config)["windowed_resolution"][0].get<int>();
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resolution.y = (*ctx->config)["windowed_resolution"][1].get<int>();
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ctx->app->resize_window(resolution.x, resolution.y);
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}
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(*ctx->config)["fullscreen"] = fullscreen;
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}
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);
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// Screenshot
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ctx->controls["screenshot"]->set_activated_callback
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(
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[ctx]()
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{
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std::string path = ctx->screenshots_path + "antkeeper-" + timestamp() + ".png";
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ctx->app->save_frame(path);
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}
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);
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// Menu back
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ctx->controls["menu_back"]->set_activated_callback
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(
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std::bind(&application::close, ctx->app, 0)
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);
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// Set activation threshold for menu navigation controls to mitigate drifting gamepad axes
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const float menu_activation_threshold = 0.1f;
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ctx->controls["menu_up"]->set_activation_threshold(menu_activation_threshold);
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ctx->controls["menu_down"]->set_activation_threshold(menu_activation_threshold);
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ctx->controls["menu_left"]->set_activation_threshold(menu_activation_threshold);
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ctx->controls["menu_right"]->set_activation_threshold(menu_activation_threshold);
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}
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static void build_bitmap_font(const type::typeface& typeface, float size, const std::unordered_set<char32_t>& charset, type::bitmap_font& font, render::material& material, gl::shader_program* shader_program)
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{
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// Get font metrics for given size
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if (type::font_metrics metrics; typeface.get_metrics(size, metrics))
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font.set_font_metrics(metrics);
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// Format font bitmap
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image& font_bitmap = font.get_bitmap();
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font_bitmap.format(sizeof(std::byte), 1);
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// For each UTF-32 character code in the character set
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for (char32_t code: charset)
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{
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// Skip missing glyphs
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if (!typeface.has_glyph(code))
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continue;
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// Add glyph to font
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type::bitmap_glyph& glyph = font[code];
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typeface.get_metrics(size, code, glyph.metrics);
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typeface.get_bitmap(size, code, glyph.bitmap);
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}
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// Pack glyph bitmaps into the font bitmap
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font.pack();
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// Create font texture from bitmap
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gl::texture_2d* font_texture = new gl::texture_2d(font_bitmap.get_width(), font_bitmap.get_height(), gl::pixel_type::uint_8, gl::pixel_format::r, gl::color_space::linear, font_bitmap.get_pixels());
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font_texture->set_wrapping(gl::texture_wrapping::extend, gl::texture_wrapping::extend);
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font_texture->set_filters(gl::texture_min_filter::linear, gl::texture_mag_filter::linear);
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// Create font material
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material.set_flags(MATERIAL_FLAG_TRANSLUCENT);
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material.add_property<const gl::texture_2d*>("font_bitmap")->set_value(font_texture);
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material.set_shader_program(shader_program);
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}
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void load_fonts(game::context* ctx)
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{
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// Load typefaces
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if (auto it = ctx->strings->find("font_serif"); it != ctx->strings->end())
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ctx->typefaces["serif"] = ctx->resource_manager->load<type::typeface>(it->second);
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if (auto it = ctx->strings->find("font_sans_serif"); it != ctx->strings->end())
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ctx->typefaces["sans_serif"] = ctx->resource_manager->load<type::typeface>(it->second);
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if (auto it = ctx->strings->find("font_monospace"); it != ctx->strings->end())
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ctx->typefaces["monospace"] = ctx->resource_manager->load<type::typeface>(it->second);
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// Build character set
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std::unordered_set<char32_t> charset;
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{
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// Add all character codes from the basic Latin unicode block
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for (char32_t code = type::unicode::block::basic_latin.first; code <= type::unicode::block::basic_latin.last; ++code)
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charset.insert(code);
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// Add all character codes from game strings
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for (auto it = ctx->strings->begin(); it != ctx->strings->end(); ++it)
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{
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// Convert UTF-8 string to UTF-32
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std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> convert;
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std::u32string u32 = convert.from_bytes(it->second);
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/// Insert each character code from the UTF-32 string into the character set
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for (char32_t code: u32)
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charset.insert(code);
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}
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}
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// Load bitmap font shader
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gl::shader_program* bitmap_font_shader = ctx->resource_manager->load<gl::shader_program>("bitmap-font.glsl");
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// Build debug font
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if (auto it = ctx->typefaces.find("monospace"); it != ctx->typefaces.end())
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{
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build_bitmap_font(*it->second, 22.0f, charset, ctx->debug_font, ctx->debug_font_material, bitmap_font_shader);
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}
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// Build menu font
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if (auto it = ctx->typefaces.find("sans_serif"); it != ctx->typefaces.end())
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{
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build_bitmap_font(*it->second, 28.0f, charset, ctx->menu_font, ctx->menu_font_material, bitmap_font_shader);
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}
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// Build title font
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if (auto it = ctx->typefaces.find("serif"); it != ctx->typefaces.end())
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{
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build_bitmap_font(*it->second, 96.0f, charset, ctx->title_font, ctx->title_font_material, bitmap_font_shader);
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}
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// Create title text
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scene::text* title_text = new scene::text();
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title_text->set_material(&ctx->title_font_material);
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title_text->set_font(&ctx->title_font);
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title_text->set_color({1.0f, 1.0f, 1.0f, 1.0f});
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title_text->set_content((*ctx->strings)["title"]);
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ctx->ui_scene->add_object(title_text);
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// Align title text
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const auto& title_aabb = static_cast<const geom::aabb<float>&>(title_text->get_local_bounds());
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float title_w = title_aabb.max_point.x - title_aabb.min_point.x;
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float title_h = title_aabb.max_point.y - title_aabb.min_point.y;
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title_text->set_translation({std::round(-title_w * 0.5f), std::round(-title_h * 0.5f), 0.0f});
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// Create version string text
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scene::text* version_text = new scene::text();
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version_text->set_material(&ctx->debug_font_material);
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version_text->set_font(&ctx->debug_font);
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version_text->set_color({1.0f, 1.0f, 1.0f, 1.0f});
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version_text->set_content(ANTKEEPER_VERSION_STRING);
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ctx->ui_scene->add_object(version_text);
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// Align version string
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const auto& version_aabb = static_cast<const geom::aabb<float>&>(version_text->get_local_bounds());
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float version_w = version_aabb.max_point.x - version_aabb.min_point.x;
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float version_h = version_aabb.max_point.y - version_aabb.min_point.y;
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const float version_padding = 12.0f;
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auto viewport = ctx->app->get_viewport_dimensions();
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version_text->set_translation({viewport[0] * 0.5f - version_w - version_padding, -viewport[1] * 0.5f + version_padding, 0.0f});
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}
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void cosmogenesis(game::context* ctx)
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{
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// Init time
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const double time = 0.0;
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ctx->astronomy_system->set_universal_time(time);
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ctx->orbit_system->set_universal_time(time);
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// Create sun
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ctx->logger->push_task("Creating the sun");
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try
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{
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heliogenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Create planet
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ctx->logger->push_task("Creating the planet");
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try
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{
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planetogenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Create moon
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ctx->logger->push_task("Creating the moon");
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try
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{
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selenogenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Create fixed stars
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ctx->logger->push_task("Creating fixed stars");
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try
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{
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extrasolar_heliogenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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// Create ant colony
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ctx->logger->push_task("Creating ant colony");
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try
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{
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colonigenesis(ctx);
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}
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catch (...)
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{
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ctx->logger->pop_task(EXIT_FAILURE);
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throw;
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}
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ctx->logger->pop_task(EXIT_SUCCESS);
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}
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void heliogenesis(game::context* ctx)
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{
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// Create solar entity
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entity::archetype* sun_archetype = ctx->resource_manager->load<entity::archetype>("sun.ent");
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entity::id sun_eid = sun_archetype->create(*ctx->entity_registry);
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ctx->entities["sun"] = sun_eid;
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// Create direct sun light scene object
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scene::directional_light* sun_direct = new scene::directional_light();
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// Create ambient sun light scene object
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scene::ambient_light* sun_ambient = new scene::ambient_light();
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sun_ambient->set_color({1, 1, 1});
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sun_ambient->set_intensity(0.0f);
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sun_ambient->update_tweens();
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// Add sun light scene objects to surface scene
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ctx->surface_scene->add_object(sun_direct);
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ctx->surface_scene->add_object(sun_ambient);
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// Pass direct sun light scene object to shadow map pass and astronomy system
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ctx->surface_shadow_map_pass->set_light(sun_direct);
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ctx->astronomy_system->set_sun_light(sun_direct);
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}
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void planetogenesis(game::context* ctx)
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{
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// Create planetary entity
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entity::archetype* planet_archetype = ctx->resource_manager->load<entity::archetype>("planet.ent");
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entity::id planet_eid = planet_archetype->create(*ctx->entity_registry);
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ctx->entities["planet"] = planet_eid;
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// Assign planetary terrain component
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entity::component::terrain terrain;
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terrain.elevation = [](double, double) -> double
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{
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//return math::random<double>(0.0, 1.0);
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return 0.0;
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};
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terrain.max_lod = 0;
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terrain.patch_material = nullptr;
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ctx->entity_registry->assign<entity::component::terrain>(planet_eid, terrain);
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// Pass planet to astronomy system as reference body
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ctx->astronomy_system->set_reference_body(planet_eid);
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// Load sky model
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ctx->surface_sky_pass->set_sky_model(ctx->resource_manager->load<render::model>("sky-dome.mdl"));
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}
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void selenogenesis(game::context* ctx)
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{
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// Create lunar entity
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entity::id moon_eid = ctx->entity_registry->create();
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ctx->entities["moon"] = moon_eid;
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// Pass moon model to sky pass
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ctx->surface_sky_pass->set_moon_model(ctx->resource_manager->load<render::model>("moon.mdl"));
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}
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void extrasolar_heliogenesis(game::context* ctx)
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{
|
|
// Load star catalog
|
|
string_table* star_catalog = ctx->resource_manager->load<string_table>("stars.csv");
|
|
|
|
// Allocate star catalog vertex data
|
|
std::size_t star_count = 0;
|
|
if (star_catalog->size() > 0)
|
|
star_count = star_catalog->size() - 1;
|
|
std::size_t star_vertex_size = 7;
|
|
std::size_t star_vertex_stride = star_vertex_size * sizeof(float);
|
|
float* star_vertex_data = new float[star_count * star_vertex_size];
|
|
float* star_vertex = star_vertex_data;
|
|
|
|
// Build star catalog vertex data
|
|
for (std::size_t i = 1; i < star_catalog->size(); ++i)
|
|
{
|
|
const string_table_row& catalog_row = (*star_catalog)[i];
|
|
|
|
double ra = 0.0;
|
|
double dec = 0.0;
|
|
double vmag = 0.0;
|
|
double bv_color = 0.0;
|
|
|
|
// Parse star catalog entry
|
|
try
|
|
{
|
|
ra = std::stod(catalog_row[1]);
|
|
dec = std::stod(catalog_row[2]);
|
|
vmag = std::stod(catalog_row[3]);
|
|
bv_color = std::stod(catalog_row[4]);
|
|
}
|
|
catch (const std::exception& e)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Convert right ascension and declination from degrees to radians
|
|
ra = math::wrap_radians(math::radians(ra));
|
|
dec = math::wrap_radians(math::radians(dec));
|
|
|
|
// Transform spherical equatorial coordinates to rectangular equatorial coordinates
|
|
double3 position_bci = geom::spherical::to_cartesian(double3{1.0, dec, ra});
|
|
|
|
// Transform coordinates from equatorial space to inertial space
|
|
physics::frame<double> bci_to_inertial = physics::orbit::inertial::to_bci({0, 0, 0}, 0.0, math::radians(23.4393)).inverse();
|
|
double3 position_inertial = bci_to_inertial * position_bci;
|
|
|
|
// Convert color index to color temperature
|
|
double cct = color::index::bv_to_cct(bv_color);
|
|
|
|
// Calculate XYZ color from color temperature
|
|
double3 color_xyz = color::cct::to_xyz(cct);
|
|
|
|
// Transform XYZ color to ACEScg colorspace
|
|
double3 color_acescg = color::xyz::to_acescg(color_xyz);
|
|
|
|
// Convert apparent magnitude to irradiance (W/m^2)
|
|
double vmag_irradiance = std::pow(10.0, 0.4 * (-vmag - 19.0 + 0.4));
|
|
|
|
// Convert irradiance to illuminance
|
|
double vmag_illuminance = vmag_irradiance * (683.0 * 0.14);
|
|
|
|
// Scale color by illuminance
|
|
double3 scaled_color = color_acescg * vmag_illuminance;
|
|
|
|
// Build vertex
|
|
*(star_vertex++) = static_cast<float>(position_inertial.x);
|
|
*(star_vertex++) = static_cast<float>(position_inertial.y);
|
|
*(star_vertex++) = static_cast<float>(position_inertial.z);
|
|
*(star_vertex++) = static_cast<float>(scaled_color.x);
|
|
*(star_vertex++) = static_cast<float>(scaled_color.y);
|
|
*(star_vertex++) = static_cast<float>(scaled_color.z);
|
|
*(star_vertex++) = static_cast<float>(vmag);
|
|
}
|
|
|
|
// Unload star catalog
|
|
ctx->resource_manager->unload("stars.csv");
|
|
|
|
// Allocate stars model
|
|
render::model* stars_model = new render::model();
|
|
|
|
// Get model VBO and VAO
|
|
gl::vertex_buffer* vbo = stars_model->get_vertex_buffer();
|
|
gl::vertex_array* vao = stars_model->get_vertex_array();
|
|
|
|
// Resize model VBO and upload vertex data
|
|
vbo->resize(star_count * star_vertex_stride, star_vertex_data);
|
|
|
|
// Free star catalog vertex data
|
|
delete[] star_vertex_data;
|
|
|
|
std::size_t attribute_offset = 0;
|
|
|
|
// Define position vertex attribute
|
|
gl::vertex_attribute position_attribute;
|
|
position_attribute.buffer = vbo;
|
|
position_attribute.offset = attribute_offset;
|
|
position_attribute.stride = star_vertex_stride;
|
|
position_attribute.type = gl::vertex_attribute_type::float_32;
|
|
position_attribute.components = 3;
|
|
attribute_offset += position_attribute.components * sizeof(float);
|
|
|
|
// Define color vertex attribute
|
|
gl::vertex_attribute color_attribute;
|
|
color_attribute.buffer = vbo;
|
|
color_attribute.offset = attribute_offset;
|
|
color_attribute.stride = star_vertex_stride;
|
|
color_attribute.type = gl::vertex_attribute_type::float_32;
|
|
color_attribute.components = 4;
|
|
attribute_offset += color_attribute.components * sizeof(float);
|
|
|
|
// Bind vertex attributes to VAO
|
|
vao->bind(render::vertex_attribute::position, position_attribute);
|
|
vao->bind(render::vertex_attribute::color, color_attribute);
|
|
|
|
// Load star material
|
|
render::material* star_material = ctx->resource_manager->load<render::material>("fixed-star.mtl");
|
|
|
|
// Create model group
|
|
render::model_group* stars_model_group = stars_model->add_group("stars");
|
|
stars_model_group->set_material(star_material);
|
|
stars_model_group->set_drawing_mode(gl::drawing_mode::points);
|
|
stars_model_group->set_start_index(0);
|
|
stars_model_group->set_index_count(star_count);
|
|
|
|
// Pass stars model to sky pass
|
|
ctx->surface_sky_pass->set_stars_model(stars_model);
|
|
}
|
|
|
|
void colonigenesis(game::context* ctx)
|
|
{}
|
|
|
|
} // namespace loading
|
|
} // namespace state
|
|
} // namespace game
|