Move everything under the guecs/ directory in src/ so that it meshes better with other projects.

src/guecs/sfml/components.cpp

@@ -0,0 +1,138 @@
+#include "guecs/ui.hpp"
+#include "guecs/sfml/backend.hpp"
+
+namespace guecs {
+  static Backend* BACKEND = nullptr;
+
+  using std::make_shared;
+
+  void init(Backend* backend) {
+    BACKEND = backend;
+  }
+
+  void Textual::init(lel::Cell &cell, shared_ptr<sf::Font> font_ptr) {
+    dbc::check(font_ptr != nullptr, "you failed to initialize this WideText");
+    if(font == nullptr) font = font_ptr;
+    if(text == nullptr) text = make_shared<sf::Text>(*font, content, size);
+    text->setFillColor(color);
+
+    if(centered) {
+      auto bounds = text->getLocalBounds();
+      auto text_cell = lel::center(bounds.size.x, bounds.size.y, cell);
+      // this stupid / 2 is because SFML renders from baseline rather than from the claimed bounding box
+      text->setPosition({float(text_cell.x), float(text_cell.y) - text_cell.h / 2});
+    } else {
+      text->setPosition({float(cell.x + padding * 2), float(cell.y + padding * 2)});
+    }
+
+    text->setCharacterSize(size);
+  }
+
+  void Textual::update(const wstring& new_content) {
+    content = new_content;
+    text->setString(content);
+  }
+
+  void Sprite::update(const string& new_name) {
+    if(new_name != name) {
+      name = new_name;
+      auto sprite_texture = BACKEND->texture_get(name);
+      sprite->setTexture(*sprite_texture.texture);
+      sprite->setTextureRect(sprite_texture.sprite->getTextureRect());
+    }
+  }
+
+  void Sprite::init(lel::Cell &cell) {
+    auto sprite_texture = BACKEND->texture_get(name);
+
+    sprite = make_shared<sf::Sprite>(
+        *sprite_texture.texture,
+        sprite_texture.sprite->getTextureRect());
+
+    sprite->setPosition({
+        float(cell.x + padding),
+        float(cell.y + padding)});
+
+    auto bounds = sprite->getLocalBounds();
+
+    sprite->setScale({
+        float(cell.w - padding * 2) / bounds.size.x,
+        float(cell.h - padding * 2) / bounds.size.y});
+  }
+
+  void Rectangle::init(lel::Cell& cell) {
+    sf::Vector2f size{float(cell.w) - padding * 2, float(cell.h) - padding * 2};
+    if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
+    shape->setPosition({float(cell.x + padding), float(cell.y + padding)});
+    shape->setFillColor(color);
+    shape->setOutlineColor(border_color);
+    shape->setOutlineThickness(border_px);
+  }
+
+
+  void Meter::init(lel::Cell& cell) {
+    bar.init(cell);
+  }
+
+  void Meter::render(lel::Cell& cell) {
+    float level = std::clamp(percent, 0.0f, 1.0f) * float(cell.w);
+    // ZED: this 6 is a border width, make it a thing
+    bar.shape->setSize({std::max(level, 0.0f), float(cell.h - 6)});
+  }
+
+  void Sound::play(bool hover) {
+    if(!hover) {
+      BACKEND->sound_play(on_click);
+    }
+  }
+
+  void Sound::stop(bool hover) {
+    if(!hover) {
+      BACKEND->sound_stop(on_click);
+    }
+  }
+
+  void Background::init() {
+    sf::Vector2f size{float(w), float(h)};
+    if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
+    shape->setPosition({float(x), float(y)});
+    shape->setFillColor(color);
+  }
+
+  void Effect::init(lel::Cell &cell) {
+    $shader = BACKEND->shader_get(name);
+    $shader->setUniform("u_resolution", sf::Vector2f({float(cell.w), float(cell.h)}));
+    $clock = std::make_shared<sf::Clock>();
+  }
+
+  void Effect::step() {
+    sf::Time cur_time = $clock->getElapsedTime();
+    float u_time = cur_time.asSeconds();
+
+    if(u_time < $u_time_end) {
+      $shader->setUniform("u_duration", duration);
+      $shader->setUniform("u_time_end", $u_time_end);
+      $shader->setUniform("u_time", u_time);
+    } else {
+      $active = false;
+    }
+  }
+
+  void Effect::run() {
+    $active = true;
+    sf::Time u_time = $clock->getElapsedTime();
+    $u_time_end = u_time.asSeconds() + duration;
+  }
+
+  shared_ptr<sf::Shader> Effect::checkout_ptr() {
+    if(BACKEND->shader_updated()) {
+      $shader = BACKEND->shader_get(name);
+    }
+
+    return $shader;
+  }
+
+  void Effect::stop() {
+    $active = false;
+  }
+}