From b354e858c85d20a56b95cdafef4602cd4a8fe87a Mon Sep 17 00:00:00 2001
From: Baitinq <manuelpalenzuelamerino@gmail.com>
Date: Sun, 18 Dec 2022 20:51:28 +0100
Subject: [PATCH] Snake: Add pause/continue game menu action

This patch adds an action in the Snake's game menu that allows for easy
pausing/unpausing of the game state.

In order to do this, the commit adds new pause()/start() functions in
the SnakeGame class ;)
---
 Userland/Games/Snake/SnakeGame.cpp | 15 +++++++++++++--
 Userland/Games/Snake/SnakeGame.h   |  2 ++
 Userland/Games/Snake/main.cpp      | 15 +++++++++++++++
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/Userland/Games/Snake/SnakeGame.cpp b/Userland/Games/Snake/SnakeGame.cpp
index 98652d1efe..e21d500d94 100644
--- a/Userland/Games/Snake/SnakeGame.cpp
+++ b/Userland/Games/Snake/SnakeGame.cpp
@@ -59,6 +59,17 @@ SnakeGame::SnakeGame(NonnullRefPtrVector<Gfx::Bitmap> food_bitmaps)
     m_high_score_text = DeprecatedString::formatted("Best: {}", m_high_score);
 }
 
+void SnakeGame::pause()
+{
+    stop_timer();
+}
+
+void SnakeGame::start()
+{
+    static constexpr int timer_ms = 100;
+    start_timer(timer_ms);
+}
+
 void SnakeGame::reset()
 {
     m_head = { m_rows / 2, m_columns / 2 };
@@ -68,8 +79,8 @@ void SnakeGame::reset()
     m_score_text = "Score: 0";
     m_is_new_high_score = false;
     m_velocity_queue.clear();
-    stop_timer();
-    start_timer(100);
+    pause();
+    start();
     spawn_fruit();
     update();
 }
diff --git a/Userland/Games/Snake/SnakeGame.h b/Userland/Games/Snake/SnakeGame.h
index 1f6edb21ec..e5c07d3ed2 100644
--- a/Userland/Games/Snake/SnakeGame.h
+++ b/Userland/Games/Snake/SnakeGame.h
@@ -18,6 +18,8 @@ public:
     static ErrorOr<NonnullRefPtr<SnakeGame>> create();
     virtual ~SnakeGame() override = default;
 
+    void start();
+    void pause();
     void reset();
 
 private:
diff --git a/Userland/Games/Snake/main.cpp b/Userland/Games/Snake/main.cpp
index 5065f5cebe..23a8697261 100644
--- a/Userland/Games/Snake/main.cpp
+++ b/Userland/Games/Snake/main.cpp
@@ -53,6 +53,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     TRY(game_menu->try_add_action(GUI::Action::create("&New Game", { Mod_None, Key_F2 }, TRY(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/reload.png"sv)), [&](auto&) {
         game->reset();
     })));
+    static DeprecatedString const pause_text = "&Pause Game"sv;
+    auto const pause_icon = TRY(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/pause.png"sv));
+    static DeprecatedString const continue_text = "&Continue Game"sv;
+    auto const continue_icon = TRY(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/play.png"sv));
+    TRY(game_menu->try_add_action(GUI::Action::create(pause_text, { Mod_None, Key_Space }, pause_icon, [&](auto& action) {
+        if (game->has_timer()) {
+            game->pause();
+            action.set_text(continue_text);
+            action.set_icon(continue_icon);
+        } else {
+            game->start();
+            action.set_text(pause_text);
+            action.set_icon(pause_icon);
+        }
+    })));
     TRY(game_menu->try_add_separator());
     TRY(game_menu->try_add_action(GUI::CommonActions::make_quit_action([](auto&) {
         GUI::Application::the()->quit();