Support simple Menu

examples/PoolBox/application/src/application.cpp

@@ -1,34 +1,49 @@
 #include "../include/asset_mgr.hpp"
 #include "include/font_writer.hpp"
+#include "include/menu.hpp"
 #include "include/paco.hpp"
 #include <FontWriter/fonts.hpp>
 #include <FontWriter/font_writer.hpp>
+#include <PSX/Periphery/periphery.hpp>
 #include <stdio.h>
 
 using namespace JabyEngine;
 
+static const Menu::SimpleMenu::Entry MenuEntries[] = {
+    {"Menu 1"},
+    {"Menu 2"},
+    {"Menu 3"},
+    {"Menu 4"},
+    {"Menu 5"}
+};
+
 // Do we want this namespace?
 // Do we want Paco to be HERE?!
 static object::Paco     paco;
+static Menu::SimpleMenu menu;
 
 static void setup() {
     Assets::Main::load();
     FontWriter::setup();
     paco.setup();
+    menu.setup(MenuEntries);
 }
 
 static void update() {
     static const char     Title[]     = "Pool Box";
     static constexpr auto TitleLength = (sizeof(Title) - 1)*DefaultFont::Info.font_size.width;
 
+    Periphery::query_controller();
     auto cursor = FontWriter::update(JabyEngine::Make::PositionI16((GPU::Display::Width-TitleLength)/2, 16));
     paco.update();
 
     FontWriter::new_font_writer.write(cursor, Title, GPU::Color24::Yellow(), &FontWriter::wiggle);
+    menu.update(FontWriter::bios_font_writer, cursor, Make::PositionI16(8, 64));
 }
 
 static void render() {
     FontWriter::new_font_writer.render();
+    FontWriter::bios_font_writer.render();
     paco.render();
 }
 

examples/PoolBox/application/src/include/menu.hpp

@@ -0,0 +1,29 @@
+#pragma once
+#include "font_writer.hpp"
+#include <FontWriter/font_writer.hpp>
+
+namespace Menu {
+    using namespace JabyEngine;
+
+    class SimpleMenu {
+    public:
+        struct Entry {
+            const char* name;
+        };
+
+    private:
+        const Entry* entries;
+        size_t       size;
+        uint8_t      cur_selection;
+
+    public:
+        void setup(const Entry* entries, size_t size);
+        
+        template<size_t N>
+        void setup(const Entry (&entries)[N]) {
+            SimpleMenu::setup(entries, N);
+        }
+
+        void update(JabyEngine::FontWriter& font_writer, State& cursor, const GPU::PositionI16& start);
+    };
+}

examples/PoolBox/application/src/menu.cpp

@@ -0,0 +1,36 @@
+#include "include/menu.hpp"
+#include <PSX/Periphery/periphery.hpp>
+
+namespace Menu {
+    void SimpleMenu :: setup(const Entry* entries, size_t size) {
+        this->entries       = entries;
+        this->size          = size;
+        this->cur_selection = 0;
+    }
+
+    void SimpleMenu :: update(JabyEngine::FontWriter& font_writer, State& cursor, const GPU::PositionI16& start) {
+        using DigitalButton = Periphery::GenericController::Button;
+        const auto& controller = Periphery::get_primary_controller_as<JabyEngine::Periphery::GenericController>();
+
+        if(controller.button.went_down(DigitalButton::Up) && this->cur_selection > 0) {
+            this->cur_selection -= 1;
+        } 
+
+        if(controller.button.went_down(DigitalButton::Down) && this->cur_selection < (this->size - 1)) {
+            this->cur_selection += 1;
+        }
+
+        cursor.pos = Make::PositionI16(8, 64);
+        for(size_t n = 0; n < this->size; n++) {
+            const auto& cur_entry = this->entries[n];
+
+            if(this->cur_selection == n) {
+                FontWriter::bios_font_writer.write(cursor, ">%s<\n", cur_entry.name);
+            }
+
+            else {
+                FontWriter::bios_font_writer.write(cursor, "%s\n", cur_entry.name);
+            }
+        }
+    }
+}