GUECS: Minimal components from zedcaster that will let me make a GUI for a game.
This commit is contained in:
Zed A. Shaw
parent
10ecf50bc0
commit
1be770d62d
28 changed files with 2528 additions and 30 deletions
310
guecs.cpp
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310
guecs.cpp
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#include "guecs.hpp"
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#include "shaders.hpp"
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#include "sound.hpp"
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namespace guecs {
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void Textual::init(lel::Cell &cell, shared_ptr<sf::Font> font_ptr) {
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dbc::check(font_ptr != nullptr, "you failed to initialize this WideText");
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if(font == nullptr) font = font_ptr;
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if(text == nullptr) text = make_shared<sf::Text>(*font, content, size);
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text->setFillColor(color);
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if(centered) {
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auto bounds = text->getLocalBounds();
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auto text_cell = lel::center(bounds.size.x, bounds.size.y, cell);
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// this stupid / 2 is because SFML renders from baseline rather than from the claimed bounding box
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text->setPosition({float(text_cell.x), float(text_cell.y) - text_cell.h / 2});
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} else {
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text->setPosition({float(cell.x + padding * 2), float(cell.y + padding * 2)});
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}
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text->setCharacterSize(size);
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}
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void Textual::update(std::wstring& new_content) {
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content = new_content;
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text->setString(content);
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}
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void Sprite::init(lel::Cell &cell) {
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auto sprite_texture = textures::get(name);
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sprite = make_shared<sf::Sprite>(
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*sprite_texture.texture,
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sprite_texture.sprite->getTextureRect());
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sprite->setPosition({
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float(cell.x + padding),
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float(cell.y + padding)});
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auto bounds = sprite->getLocalBounds();
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sprite->setScale({
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float(cell.w - padding * 2) / bounds.size.x,
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float(cell.h - padding * 2) / bounds.size.y});
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}
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void Rectangle::init(lel::Cell& cell) {
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sf::Vector2f size{float(cell.w) - padding * 2, float(cell.h) - padding * 2};
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if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
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shape->setPosition({float(cell.x + padding), float(cell.y + padding)});
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shape->setFillColor(color);
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shape->setOutlineColor(border_color);
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shape->setOutlineThickness(border_px);
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}
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void Meter::init(lel::Cell& cell) {
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bar.init(cell);
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}
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void Sound::play(bool hover) {
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if(!hover) {
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sound::play(on_click);
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}
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}
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void Background::init() {
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sf::Vector2f size{float(w), float(h)};
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if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
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shape->setPosition({float(x), float(y)});
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shape->setFillColor(color);
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}
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void Effect::init(lel::Cell &cell) {
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$shader_version = shaders::version();
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$shader = shaders::get(name);
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$shader->setUniform("u_resolution", sf::Vector2f({float(cell.w), float(cell.h)}));
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$clock = std::make_shared<sf::Clock>();
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}
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void Effect::step() {
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sf::Time cur_time = $clock->getElapsedTime();
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float u_time = cur_time.asSeconds();
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if(u_time < $u_time_end) {
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$shader->setUniform("u_duration", duration);
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$shader->setUniform("u_time_end", $u_time_end);
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$shader->setUniform("u_time", u_time);
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} else {
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$active = false;
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}
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}
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void Effect::run() {
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$active = true;
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sf::Time u_time = $clock->getElapsedTime();
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$u_time_end = u_time.asSeconds() + duration;
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}
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shared_ptr<sf::Shader> Effect::checkout_ptr() {
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if(shaders::updated($shader_version)) {
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$shader = shaders::get(name);
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$shader_version = shaders::version();
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}
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return $shader;
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}
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UI::UI() {
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$font = make_shared<sf::Font>(FONT_FILE_NAME);
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}
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void UI::position(int x, int y, int width, int height) {
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$parser.position(x, y, width, height);
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}
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void UI::layout(std::string grid) {
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$grid = grid;
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bool good = $parser.parse($grid);
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dbc::check(good, "LEL parsing failed.");
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for(auto& [name, cell] : $parser.cells) {
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auto ent = init_entity(name);
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$world.set<lel::Cell>(ent, cell);
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}
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}
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DinkyECS::Entity UI::init_entity(std::string name) {
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auto entity = $world.entity();
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// this lets you look up an entity by name
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$name_ents.insert_or_assign(name, entity);
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// this makes it easier to get the name during querying
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$world.set<CellName>(entity, {name});
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return entity;
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}
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DinkyECS::Entity UI::entity(std::string name) {
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dbc::check($name_ents.contains(name),
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fmt::format("GUECS entity {} does not exist. Forgot to init_entity?", name));
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return $name_ents.at(name);
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}
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void UI::init() {
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if($world.has_the<Background>()) {
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auto& bg = $world.get_the<Background>();
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bg.init();
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}
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$world.query<Background>([](auto, auto& bg) {
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bg.init();
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});
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$world.query<lel::Cell, Rectangle>([](auto, auto& cell, auto& rect) {
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rect.init(cell);
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});
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$world.query<lel::Cell, Effect>([](auto, auto& cell, auto& shader) {
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shader.init(cell);
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});
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$world.query<Rectangle, Meter>([](auto, auto& bg, auto &) {
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bg.shape->setFillColor(ColorValue::BLACK);
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});
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$world.query<lel::Cell, Meter>([](auto, auto &cell, auto& meter) {
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meter.init(cell);
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});
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$world.query<lel::Cell, Textual>([this](auto, auto& cell, auto& text) {
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text.init(cell, $font);
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});
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$world.query<lel::Cell, Label>([this](auto, auto& cell, auto& text) {
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text.init(cell, $font);
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});
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$world.query<lel::Cell, Sprite>([&](auto, auto &cell, auto &sprite) {
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sprite.init(cell);
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});
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}
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void UI::debug_layout(sf::RenderWindow& window) {
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$world.query<lel::Cell>([&](const auto, auto &cell) {
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sf::RectangleShape rect{{float(cell.w), float(cell.h)}};
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rect.setPosition({float(cell.x), float(cell.y)});
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rect.setFillColor(sf::Color::Transparent);
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rect.setOutlineColor(sf::Color::Red);
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rect.setOutlineThickness(2.0f);
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window.draw(rect);
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});
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}
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void UI::render(sf::RenderWindow& window) {
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if($world.has_the<Background>()) {
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auto& bg = $world.get_the<Background>();
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window.draw(*bg.shape);
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}
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$world.query<Effect>([&](auto, auto& shader) {
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if(shader.$active) shader.step();
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});
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$world.query<Rectangle>([&](auto ent, auto& rect) {
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render_helper(window, ent, true, rect.shape);
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});
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$world.query<lel::Cell, Meter>([&](auto ent, auto& cell, const auto &meter) {
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float level = std::clamp(meter.percent, 0.0f, 1.0f) * float(cell.w);
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// ZED: this 6 is a border width, make it a thing
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meter.bar.shape->setSize({std::max(level, 0.0f), float(cell.h - 6)});
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render_helper(window, ent, true, meter.bar.shape);
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});
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$world.query<Sprite>([&](auto ent, auto& sprite) {
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render_helper(window, ent, false, sprite.sprite);
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});
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$world.query<Label>([&](auto ent, auto& text) {
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render_helper(window, ent, false, text.text);
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});
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$world.query<Textual>([&](auto ent, auto& text) {
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render_helper(window, ent, true, text.text);
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});
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}
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bool UI::mouse(float x, float y, bool hover) {
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int action_count = 0;
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$world.query<lel::Cell, Clickable>([&](auto ent, auto& cell, auto &clicked) {
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if((x >= cell.x && x <= cell.x + cell.w) &&
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(y >= cell.y && y <= cell.y + cell.h))
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{
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do_if<Effect>(ent, [hover](auto& effect) {
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effect.$shader->setUniform("hover", hover);
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effect.run();
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});
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do_if<Sound>(ent, [hover](auto& sound) {
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// here set that it played then only play once
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sound.play(hover);
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});
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if(hover) return; // kinda gross
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if(auto action_data = get_if<ActionData>(ent)) {
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clicked.action(ent, action_data->data);
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} else {
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clicked.action(ent, {});
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}
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action_count++;
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} else {
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// via ORBLISHJ
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// just reset the hover trigger for all that aren't hit
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// then in the ^^ positive branch play it and set it played
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}
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});
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return action_count > 0;
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}
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void UI::show_sprite(string region, string sprite_name) {
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auto ent = entity(region);
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if(!has<Sprite>(ent)) {
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Sprite to_show{sprite_name};
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auto& cell = cell_for(ent);
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to_show.init(cell);
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set<guecs::Sprite>(ent, to_show);
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}
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}
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void UI::show_text(string region, wstring content) {
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auto ent = entity(region);
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if(auto text = get_if<Textual>(ent)) {
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text->text->setString(content);
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} else {
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auto &cell = cell_for(ent);
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Textual to_set{content, 20};
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to_set.init(cell, $font);
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to_set.text->setFillColor(ColorValue::LIGHT_MID);
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set<Textual>(ent, to_set);
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}
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}
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void UI::show_label(string region, wstring content) {
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auto ent = entity(region);
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if(auto text = get_if<Label>(ent)) {
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text->text->setString(content);
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} else {
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auto &cell = cell_for(ent);
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Label to_set{content, 20};
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to_set.init(cell, $font);
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to_set.text->setFillColor(ColorValue::LIGHT_MID);
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set<Label>(ent, to_set);
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}
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}
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Clickable make_action(DinkyECS::World& target, Events::GUI event) {
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return {[&, event](auto ent, auto data){
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// remember that ent is passed in from the UI::mouse handler
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target.send<Events::GUI>(event, ent, data);
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}};
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}
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}
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