Sistema de notificacions amb presets (F4, llisca des de dalt) (v0.9.0)

source/core/rendering/notifier.cpp

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+#include "core/rendering/notifier.hpp"
+
+#include "core/rendering/screen.hpp"
+#include "core/rendering/surface.hpp"
+#include "core/rendering/text.hpp"
+#include "core/resources/resource_cache.hpp"
+#include "utils/defines.hpp"
+
+auto Notifier::get() -> Notifier& {
+    static Notifier instance_;
+    return instance_;
+}
+
+Notifier::~Notifier() = default;
+
+void Notifier::init() {
+    // El Director preloade la paleta "ui" i la surface "8bithud.gif" abans
+    // de cridar aquest init(); ací només cal construir el Text.
+    auto font_surface = Resource::Cache::get().getSurface("8bithud.gif");
+    text_ = std::make_unique<Text>(font_surface, "data/font/8bithud.fnt");
+}
+
+void Notifier::update(int delta_ms) {
+    const float DT = static_cast<float>(delta_ms) / 1000.0F;
+    switch (status_) {
+        case Status::RISING:
+            y_ += SLIDE_SPEED * DT;
+            if (y_ >= 0.0F) {
+                y_ = 0.0F;
+                status_ = Status::ACTIVE;
+            }
+            break;
+        case Status::ACTIVE:
+            remaining_ms_ -= delta_ms;
+            if (remaining_ms_ <= 0) { status_ = Status::VANISHING; }
+            break;
+        case Status::VANISHING:
+            y_ -= SLIDE_SPEED * DT;
+            if (y_ <= static_cast<float>(-HEIGHT)) {
+                y_ = static_cast<float>(-HEIGHT);
+                status_ = Status::HIDDEN;
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+void Notifier::render() {
+    if (status_ == Status::HIDDEN || text_ == nullptr || current_text_.empty()) { return; }
+
+    const int TEXT_W = text_->length(current_text_, 1);
+    const int BOX_W = TEXT_W + (2 * PADDING_H);
+    const int BOX_X = (GameCanvas::WIDTH - BOX_W) / 2;
+    const int BOX_Y = static_cast<int>(y_);
+
+    // Fons sòlid a través de la paleta "ui" (ARGB directe al canvas, sense
+    // tocar cap surface paletada).
+    const auto& ui_palette = Resource::Cache::get().getPalette("ui");
+    Screen::get().fillRect(BOX_X, BOX_Y, BOX_W, HEIGHT, ui_palette[current_bg_color_]);
+
+    text_->writeDX(Text::CENTER_FLAG | Text::COLOR_FLAG,
+        GameCanvas::CENTER_X,
+        BOX_Y + PADDING_V,
+        current_text_,
+        1,
+        current_text_color_);
+}
+
+void Notifier::notify(const std::string& text) {
+    notify(text, Notification::DEFAULT);
+}
+
+void Notifier::notify(const std::string& text, const Notification::Preset& preset) {
+    notify(text, preset.text_color, preset.bg_color, preset.time_ms);
+}
+
+void Notifier::notify(const std::string& text, Uint8 text_color, Uint8 bg_color, int time_ms) {
+    // Política simple: la nova notificació reemplaça la que hi havia. Per
+    // gestionar-ne una cua, canviar ací per una FIFO quan calga.
+    current_text_ = text;
+    current_text_color_ = text_color;
+    current_bg_color_ = bg_color;
+    remaining_ms_ = time_ms;
+    status_ = Status::RISING;
+}