feat: add proof-of-concept

include/game.hpp

@@ -0,0 +1,42 @@
+#pragma once
+#include <LibPrintf.h>
+#include "joystick.hpp"
+#include "display.hpp"
+#include "menu.hpp"
+#define ACTION_INTERVAL 60000 // 1 minute
+#define MAXIMUM_STAT 100
+
+typedef struct {
+  bool dead;
+  bool menuOpen;
+
+  int hunger;
+  int joy;
+  int energy;
+  int cleanliness;
+
+  uint64_t lastActionTime;
+  bool shouldClear;
+} GameState;
+
+class Game {
+  public:
+    Game();
+    void begin();
+    void update();
+    void render();
+
+  protected:
+    void forceUpdate(String reason);
+    void feed();
+    void play();
+    void sleep();
+    void clean();
+
+  private:
+    GameState state;
+    Joystick joystick;
+    Display display;
+    String* items;
+    Menu menu;
+};

include/menu.hpp

@@ -3,20 +3,15 @@
 #include <Arduino.h>
 #include "joystick.hpp"
 
-typedef struct {
-  String name;
-  void (*action)();
-} Item;
-
 class Menu {
   public:
-    Menu(Item* items);
-    void updateCurrentItem(JoystickDirection& direction);
-    void execute();
+    Menu();
+    void setItems(String* items);
+    bool updateCurrentItem(JoystickDirection& direction);
 
-    Item& getItemAt(size_t index);
+    String& getItemAt(size_t index);
     size_t getCurrentItemIndex() const;
   private:
-    Item items[MENU_ITEM_COUNT];
+    String items[MENU_ITEM_COUNT];
     int currentItem;
 };

src/display.cpp

@@ -17,12 +17,12 @@ void Display::drawMenu(Menu &menu) {
   size_t currentItemIndex = menu.getCurrentItemIndex();
   for (size_t i = 0; i < MENU_ITEM_COUNT; i++) {
     lcd.setCursor(0, i);
-    Item& item = menu.getItemAt(i);
+    String item = menu.getItemAt(i);
 
     if (i == currentItemIndex) {
-      lcd.print("> " + item.name);
+      lcd.print("> " + item);
     } else {
-      lcd.print("  " + item.name);
+      lcd.print("  " + item);
     }
   }
 }

src/game.cpp

@@ -0,0 +1,151 @@
+#include "game.hpp"
+
+Game::Game() : joystick(), display(), menu() {
+  state = (GameState) {
+    .dead = false,
+    .menuOpen = false,
+    .hunger = 0,
+    .joy = 100,
+    .energy = 100,
+    .cleanliness = 100,
+    .lastActionTime = 0,
+    .shouldClear = false,
+  };
+
+  String items[] = {
+    "Feed",
+    "Play",
+    "Sleep",
+    "Clean"
+  };
+
+  menu.setItems(items);
+}
+
+void Game::begin() {
+  Serial.begin(9600);
+  while (!Serial) {
+    delay(10);
+  }
+  display.begin();
+}
+
+void Game::update() {
+  // If the pet is dead, we don't need to update its state
+  if (state.dead) {
+    return;
+  }
+
+  bool isPressed = joystick.isPressed();
+
+  // If the menu is open, we don't need to update the pet's state
+  if (state.menuOpen) {
+    JoystickDirection direction = joystick.getDirection();
+    if (menu.updateCurrentItem(direction)) {
+      forceUpdate("Menu navigation");
+    }
+
+    // If the joystick is pressed, execute the current menu item
+    if (isPressed) {
+      state.menuOpen = false;
+      // Based on the current menu item, perform the corresponding action
+      switch (menu.getCurrentItemIndex()) {
+        case 0:
+          feed();
+          break;
+        case 1:
+          play();
+          break;
+        case 2:
+          sleep();
+          break;
+        case 3:
+          clean();
+          break;
+      }
+      forceUpdate("Menu action");
+    }
+    return;
+  }
+
+  // If the joystick is pressed and the menu is not open, open the menu
+  if (isPressed) {
+    state.menuOpen = true;
+    forceUpdate("Opening menu");
+    return;
+  }
+
+  // Update the pet's stats based on the time elapsed since the last action
+  uint64_t currentTime = millis();
+  if (currentTime - state.lastActionTime >= ACTION_INTERVAL) {
+    state.hunger += 10;
+    state.joy -= 5;
+    state.energy -= 5;
+    state.cleanliness -= 5;
+    state.lastActionTime = currentTime;
+    
+    forceUpdate("Time-based stat update");
+  }
+
+  // Check if the pet has died from any of the conditions
+  bool starvedToDeath = state.hunger >= MAXIMUM_STAT;
+  bool diedOfBoredom = state.joy <= -MAXIMUM_STAT;
+  bool diedOfExhaustion = state.energy <= -MAXIMUM_STAT;
+  bool diedOfFilth = state.cleanliness <= -MAXIMUM_STAT;
+
+  state.dead = starvedToDeath || diedOfBoredom || diedOfExhaustion || diedOfFilth;
+}
+
+void Game::render() {
+  if (state.shouldClear) {
+    display.clear();
+    state.shouldClear = false;
+
+    if (state.menuOpen) {
+      display.drawMenu(menu);
+      Serial.println("Rendering menu");
+      return;
+    }
+  }
+
+  if (state.menuOpen) {
+    return;
+  }
+
+  if (state.dead) {
+    display.getLCD().print("Your pet has died.");
+    return;
+  }
+
+  display.getLCD().setCursor(0, 0);
+  display.getLCD().print("H: " + String(state.hunger));
+  display.getLCD().setCursor(0, 1);
+  display.getLCD().print("J: " + String(state.joy));
+  display.getLCD().setCursor(0, 2);
+  display.getLCD().print("E: " + String(state.energy));
+  display.getLCD().setCursor(0, 3);
+  display.getLCD().print("C: " + String(state.cleanliness));
+}
+
+void Game::forceUpdate(String reason) {
+  if (!state.shouldClear) {
+    Serial.println("Forcing update: " + reason);
+    state.shouldClear = true;
+  }
+}
+
+void Game::feed() {
+  state.hunger += 20;
+}
+
+void Game::play() {
+  state.joy += 20;
+}
+
+void Game::sleep() {
+  state.energy += 20;
+}
+
+void Game::clean() {
+  state.cleanliness += 20;
+}

src/main.cpp

@@ -1,40 +1,13 @@
-#include <Arduino.h>
-#include <LibPrintf.h>
-#include "joystick.hpp"
-#include "display.hpp"
+#include "game.hpp"
 
-Joystick joystick;
-Display display;
-
-Item items[MENU_ITEM_COUNT] = {
-  {"Feed", []() { Serial.println("Feeding..."); }},
-  {"Play", []() { Serial.println("Playing..."); }},
-  {"Sleep", []() { Serial.println("Sleeping..."); }},
-  {"Clean", []() { Serial.println("Cleaning..."); }}
-};
-Menu menu(items);
+Game game;
 
 void setup() {
-  Serial.begin(9600);
-  while (!Serial) {
-    delay(10);
-  }
-
-  display.begin();
-  pinMode(LED_BUILTIN, OUTPUT);
-  display.drawMenu(menu);
+  game.begin();
 }
 
 void loop() {
-  JoystickDirection direction = joystick.getDirection();
-  if (direction != JoystickDirection::CENTER) {
-    menu.updateCurrentItem(direction);
-    display.drawMenu(menu);
-  }
-
-  if (joystick.isPressed()) {
-    menu.execute();
-  }
-
-  delay(250);
+  game.update();
+  delay(100); // Small delay to prevent overwhelming the CPU
+  game.render();
 }

src/menu.cpp

@@ -1,31 +1,28 @@
 #include "menu.hpp"
 
-Menu::Menu(Item* items) : currentItem(0) {
+Menu::Menu() : currentItem(0) {}
+
+void Menu::setItems(String* items) {
+  this->currentItem = 0;
   for (int i = 0; i < MENU_ITEM_COUNT; i++) {
     this->items[i] = items[i];
   }
 }
 
-void Menu::updateCurrentItem(JoystickDirection &direction) {
+bool Menu::updateCurrentItem(JoystickDirection &direction) {
   switch (direction) {
     case JoystickDirection::UP:
       currentItem = (currentItem - 1 + MENU_ITEM_COUNT) % MENU_ITEM_COUNT;
-      break;
+      return true;
     case JoystickDirection::DOWN:
       currentItem = (currentItem + 1) % MENU_ITEM_COUNT;
-      break;
+      return true;
     default:
-      break;
+      return false;
   }
 }
 
-void Menu::execute() {
-  if (items[currentItem].action) {
-    items[currentItem].action();
-  }
-}
-
-Item& Menu::getItemAt(size_t index) {
+String& Menu::getItemAt(size_t index) {
   return items[index];
 }