From 0a7cbb6341bad23c422f850ce5b1d9923538d14f Mon Sep 17 00:00:00 2001
From: DenisD3D <dd.denis2544@gmail.com>
Date: Thu, 21 Mar 2024 17:29:09 +0100
Subject: [PATCH] Add pause screen

---
 src/jeu.cpp                |  5 +++++
 src/jeu.hpp                |  9 +++++++++
 src/screens/gamescreen.cpp | 36 ++++++++++++++++++++++++++++++++++++
 src/screens/gamescreen.hpp |  3 +++
 4 files changed, 53 insertions(+)

diff --git a/src/jeu.cpp b/src/jeu.cpp
index a10343e..dc48df6 100644
--- a/src/jeu.cpp
+++ b/src/jeu.cpp
@@ -18,6 +18,7 @@ Jeu::Jeu(const Jeu &jeu): map(jeu.map), snake(jeu.snake) {
     dirSnake = jeu.dirSnake;
     std::random_device rd;
     gen.seed(rd());
+    pause = jeu.pause;
 }
 
 Jeu::~Jeu() {
@@ -28,6 +29,7 @@ Jeu &Jeu::operator=(const Jeu &jeu) {
     dirSnake = jeu.dirSnake;
     snake = jeu.snake;
     map = jeu.map;
+    pause = jeu.pause;
 
     return *this;
 }
@@ -58,6 +60,9 @@ bool Jeu::init() {
 }
 
 void Jeu::evolue() {
+    if (pause) // Game is paused, don't do anything
+        return;
+
     if (!directionsBuffer.empty()) {
         dirSnake = directionsBuffer.front();
         directionsBuffer.pop();
diff --git a/src/jeu.hpp b/src/jeu.hpp
index 467775c..50a0c02 100644
--- a/src/jeu.hpp
+++ b/src/jeu.hpp
@@ -15,6 +15,7 @@ class Jeu {
     std::queue<Direction> directionsBuffer;
     Position applePos = Position(-1, -1);
     std::mt19937 gen;
+    bool pause = false;
 
 public:
     Jeu();
@@ -42,6 +43,14 @@ class Jeu {
     const Position *getApplePos() const;
 
     const Map &getMap() const;
+
+    void togglePause() {
+        pause = !pause;
+    }
+
+    bool isPaused() const {
+        return pause;
+    }
 };
 
 #endif
diff --git a/src/screens/gamescreen.cpp b/src/screens/gamescreen.cpp
index ad1bf3e..9608a2d 100644
--- a/src/screens/gamescreen.cpp
+++ b/src/screens/gamescreen.cpp
@@ -26,6 +26,30 @@ GameScreen::GameScreen(QWidget *parent, const QString &file_info): QWidget(paren
     auto *timer = new QTimer(this);
     connect(timer, &QTimer::timeout, this, &GameScreen::handleTimer);
     timer->start(100);
+
+
+    // Pause overlay
+    pauseOverlay = new QWidget(this);
+    pauseOverlay->setStyleSheet("background-color: rgba(0, 0, 0, 127); color: white; font-size: 24px;");
+    pauseOverlay->hide(); // hide it initially
+
+    auto *pauseLabel = new QLabel("Game Paused", pauseOverlay);
+    pauseLabel->setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
+
+    auto *resumeLabel = new QLabel("Press P to resume", pauseOverlay); // New label
+    resumeLabel->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
+    resumeLabel->setStyleSheet("font-size: 18px;");
+
+    auto *pauseLayout = new QVBoxLayout(pauseOverlay);
+    pauseLayout->setContentsMargins(0, 0, 0, 0);
+    pauseLayout->setSpacing(0);
+    pauseLayout->addWidget(pauseLabel);
+    pauseLayout->addWidget(resumeLabel);
+}
+
+void GameScreen::resizeEvent(QResizeEvent* event) {
+    QWidget::resizeEvent(event);
+    pauseOverlay->resize(event->size());
 }
 
 /**
@@ -40,6 +64,18 @@ void GameScreen::keyPressEvent(QKeyEvent *event) {
         jeu.setDirection(HAUT);
     if (event->key() == Qt::Key_Down)
         jeu.setDirection(BAS);
+
+    if (event->key() == Qt::Key_P) {
+        jeu.togglePause();
+
+        if (jeu.isPaused()) {
+            pauseOverlay->show();
+        } else {
+            pauseOverlay->hide();
+        }
+    }
+
+
     update();
 }
 
diff --git a/src/screens/gamescreen.hpp b/src/screens/gamescreen.hpp
index 9d129d4..694ac2b 100644
--- a/src/screens/gamescreen.hpp
+++ b/src/screens/gamescreen.hpp
@@ -11,12 +11,15 @@ class GameScreen final : public QWidget {
     Q_OBJECT
 
     GameArea *gameArea;
+    QWidget *pauseOverlay;
 
 public:
     Jeu jeu;
 
     explicit GameScreen(QWidget *parent = nullptr, const QString &file_info = "map1.skm");
 
+    void resizeEvent(QResizeEvent *event);
+
     void handleTimer();
 
 protected: