menu

Ai.cpp

@@ -20,6 +20,11 @@ void PlayerAi::update(Actor* owner) {
 			case SDL_EVENT_QUIT:
 				engine->gameStatus = Engine::QUIT;
 				break;
+			case SDL_EVENT_KEY_DOWN:
+				if (event.key.key == SDLK_ESCAPE) {
+					engine->gameStatus = Engine::PAUSE;
+				}
+				break;
 			default:
 				break;
 			}
@@ -47,6 +52,9 @@ void PlayerAi::update(Actor* owner) {
 			case SDLK_RIGHT:
 				dx = 1;
 				break;
+			case SDLK_ESCAPE:
+				engine->gameStatus = Engine::PAUSE;
+				break;
 			default:
 				if (event.key.key >= SDLK_A && event.key.key <= SDLK_Z) {
 					handleActionKey(owner, event.key.key);

Engine.cpp

@@ -19,7 +19,6 @@ Engine::Engine(int screenWidth, int screenHeight, tcod::Context *context, tcod::
 	player = nullptr;
 	fovRadius = 10;
 	computeFov = true;
-	gameStatus = STARTUP;
 	mouse.cx = 0;
 	mouse.cy = 0;
 	mouse.rbutton_pressed = false;
@@ -27,7 +26,6 @@ Engine::Engine(int screenWidth, int screenHeight, tcod::Context *context, tcod::
 }
 
 void Engine::init() {
-	gui = new Gui(context, console);
 	player = new Actor(40, 25, "@", "player", TCOD_ColorRGB(255, 255, 255));
 	player->destructible = new PlayerDestructible(30, 2, "player corpse");
 	player->attacker = new Attacker(5);
@@ -38,11 +36,17 @@ void Engine::init() {
 	map->init(true);
 	gui->message(TCOD_ColorRGB(150,0,0),
 		"Welcome stranger!\nPrepare to perish in the Tombs of Andrew's Dunegon.");
+	gameStatus = STARTUP;
+}
+
+void Engine::term() {
+	actors.clearAndDelete();
+	if (map) delete map;
+	gui->clear();
 }
 
 Engine::~Engine() {
-    actors.clearAndDelete();
-    delete map;
+	term();
 	delete gui;
 }
 
@@ -50,6 +54,7 @@ bool Engine::update() {
 	if (gameStatus == STARTUP) map->computeFov();
 	gameStatus = IDLE;
 	player->update();
+
 	if (gameStatus == NEW_TURN) {
 		for (Actor** iterator = actors.begin(); iterator != actors.end();
 			iterator++) {
@@ -58,10 +63,15 @@ bool Engine::update() {
 				actor->update();
 			}
 		}
-	}
-	if (gameStatus == QUIT) {
+	} else if (gameStatus == QUIT) {
 		return false;
 	}
+	else if (gameStatus == PAUSE) {
+		save();
+		load();
+	}
+
+
 	return true;
 }
 
@@ -198,8 +208,28 @@ void Engine::save() {
 }
 
 void Engine::load() {
+	gui = new Gui(context, console);
+	gui->menu.clear();
+	gui->menu.addItem(Menu::NEW_GAME, "New game");
 	if (TCODSystem::fileExists("game.sav")) {
+		engine->gui->menu.addItem(Menu::CONTINUE, "Continue");
+	}
+	engine->gui->menu.addItem(Menu::EXIT, "Exit");
+	Menu::MenuItemCode menuItem = engine->gui->menu.pick(context, console);
+
+	if (menuItem == Menu::EXIT || menuItem == Menu::NONE) {
+		// Exit or window closed
+		exit(0);
+	}
+	else if (menuItem == Menu::NEW_GAME) {
+		// New game
+		term();
+		init();
+	}
+	else if (menuItem == Menu::CONTINUE) {
+		// Continue
 		TCODZip zip;
+		term();
 		zip.loadFromFile("game.sav");
 		// load the map
 		int width = zip.getInt();
@@ -219,10 +249,8 @@ void Engine::load() {
 			nbActors--;
 		}
 		// finally the message log
-		gui = new Gui(context, console);
+		
 		gui->load(zip);
-	}
-	else {
-		engine->init();
+		gameStatus = STARTUP;
 	}
 }

Engine.h

@@ -13,6 +13,7 @@ public:
         NEW_TURN,
         VICTORY,
         DEFEAT,
+        PAUSE,
         QUIT
     } gameStatus;
 
@@ -28,6 +29,7 @@ public:
     tcod::Console* console;
     Engine(int screenWidth, int screenHeight, tcod::Context *context, tcod::Console *console);
     void init();
+    void term();
     ~Engine();
     bool update();
     void render(bool present = true);

Gui.cpp

@@ -1,3 +1,4 @@
+#include <SDL3/SDL.h>
 #include "Gui.h"
 #include "Engine.h"
 #include "Actor.h"
@@ -14,10 +15,15 @@ Gui::Gui(tcod::Context *ctx, tcod::Console *root) {
     this->root = root;
 }
 
-Gui::~Gui() {
+void Gui::clear() {
     log.clearAndDelete();
 }
 
+Gui::~Gui() {
+    delete con.release();
+    clear();
+}
+
 void Gui::render() {
     // clear the GUI console
     con.clear();
@@ -137,3 +143,68 @@ void Gui::load(TCODZip& zip) {
         nbMessages--;
     }
 }
+
+Menu::~Menu() {
+    clear();
+}
+
+void Menu::clear() {
+    items.clearAndDelete();
+}
+
+void Menu::addItem(MenuItemCode code, std::string label) {
+    MenuItem* item = new MenuItem();
+    item->code = code;
+    item->label = label;
+    items.push(item);
+}
+
+Menu::MenuItemCode Menu::pick(tcod::Context *ctx, tcod::Console *con) {
+    static TCODImage img("menu_background1.png");
+    int selectedItem = 0;
+
+    while (true) {
+		img.blit2x(*con, 0, 0);
+		int currentItem = 0;
+		for (MenuItem** it = items.begin(); it != items.end(); it++) {
+			if (currentItem == selectedItem) {
+				tcod::print(*con, { 10, 10 + currentItem * 3 }, (*it)->label,TCOD_ColorRGB(255, 100, 255), std::nullopt);
+			}
+			else {
+                tcod::print(*con, { 10, 10 + currentItem * 3 }, (*it)->label, TCOD_ColorRGB(200, 200, 200), std::nullopt);
+			}
+			currentItem++;
+		}
+		ctx->present(*con);
+		// check key presses
+		SDL_Event event;
+
+		while (SDL_PollEvent(&event)) {
+			ctx->convert_event_coordinates(event);
+			switch (event.type) {
+			case SDL_EVENT_KEY_DOWN:
+            {
+				if (event.key.key == SDLK_UP) {
+                    selectedItem--;
+                    if (selectedItem < 0) {
+                        selectedItem = items.size() - 1;
+                    }
+				}
+				else if (event.key.key == SDLK_DOWN) {
+					selectedItem = (selectedItem + 1) % items.size();
+				}
+				else if (event.key.key == SDLK_RETURN) {
+					return items.get(selectedItem)->code;
+				}
+                else if (event.key.key == SDLK_ESCAPE) {
+                    return NONE;
+                }
+            }
+            break;
+			case SDL_EVENT_QUIT:
+				engine->gameStatus = Engine::QUIT;
+				return NONE;
+			}
+		}
+    }
+}

Gui.h

@@ -2,6 +2,27 @@
 
 #include "libtcod.hpp"
 #include "Persistance.h"
+
+class Menu {
+public:
+    enum MenuItemCode {
+        NONE,
+        NEW_GAME,
+        CONTINUE,
+        EXIT
+    };
+    ~Menu();
+    void clear();
+    void addItem(MenuItemCode code, std::string label);
+    MenuItemCode pick(tcod::Context* ctx, tcod::Console* con);
+protected:
+    struct MenuItem {
+        MenuItemCode code;
+        std::string label;
+    };
+    TCODList<MenuItem*> items;
+};
+
 class Gui : public Persistent {
 public:
     Gui(tcod::Context *ctx, tcod::Console *root);
@@ -10,7 +31,8 @@ public:
     void message(const TCOD_ColorRGB& col, const char* text, ...);
     void load(TCODZip& zip);
     void save(TCODZip& zip);
-
+    void clear();
+    Menu menu;
 protected:
     tcod::Console con;
     tcod::Console* root;
@@ -27,3 +49,4 @@ protected:
 
     TCODList<Message*> log;
 };
+