7 files changed, 212 insertions, 0 deletions
diff --git a/graphs/cpp/hot_potato/bomb.cc b/graphs/cpp/hot_potato/bomb.cc
new file mode 100644
index 0000000..256e3d7
--- /dev/null
+++ b/graphs/cpp/hot_potato/bomb.cc
@@ -0,0 +1,28 @@
+#include "bomb.hh"
+
+#include <iostream>
+#include <stdexcept>
+
+Bomb::Bomb(int ticks)
+{
+    if (ticks <= 0)
+        throw std::runtime_error{
+            "Number of ticks should be strictly positive"
+        };
+    max_ticks_ = ticks;
+    count_ = 0;
+}
+void Bomb::tick()
+{
+    if (count_ >= max_ticks_)
+        throw std::runtime_error{ "Bomb should have already exploded." };
+    if (count_ % 2)
+        std::cout << "Tac!\n";
+    else
+        std::cout << "Tic!\n";
+    count_++;
+}
+bool Bomb::has_exploded() const
+{
+    return count_ >= max_ticks_;
+}
+\ No newline at end of file
diff --git a/graphs/cpp/hot_potato/bomb.hh b/graphs/cpp/hot_potato/bomb.hh
new file mode 100644
index 0000000..41e0bd3
--- /dev/null
+++ b/graphs/cpp/hot_potato/bomb.hh
@@ -0,0 +1,11 @@
+#pragma once
+
+class Bomb {
+public:
+    Bomb(int ticks);
+    void tick();
+    bool has_exploded() const;
+private:
+    int max_ticks_;
+    int count_;
+};
+\ No newline at end of file
diff --git a/graphs/cpp/hot_potato/game.cc b/graphs/cpp/hot_potato/game.cc
new file mode 100644
index 0000000..3e0889a
--- /dev/null
+++ b/graphs/cpp/hot_potato/game.cc
@@ -0,0 +1,48 @@
+//
+// Created by martial.simon on 2/25/25.
+//
+
+#include "game.hh"
+
+#include <iostream>
+#include <stdexcept>
+void Game::add_player(const std::string& name, size_t nb_presses)
+{
+    auto new_player = std::make_unique<Player>(name, nb_presses);
+    if (head_ == nullptr)
+    {
+        head_ = std::move(new_player);
+        tail_ = head_.get();
+    }
+    else
+    {
+        tail_->set_next(std::move(new_player));
+        tail_ = tail_->get_next();
+    }
+}
+void Game::play(int bomb_ticks)
+{
+    if (!head_ || !head_->get_next())
+        throw std::runtime_error{ "Not enough players." };
+    head_->set_bomb(std::make_unique<Bomb>(bomb_ticks));
+    Player* p = head_.get();
+    while (true)
+    {
+        p->press_bomb();
+        if (p->is_dead())
+        {
+            std::cout << p->get_name() << " has exploded.\n";
+            return;
+        }
+        if (p == tail_)
+        {
+            p->pass_bomb(*head_);
+            p = head_.get();
+        }
+        else
+        {
+            p->pass_bomb(*p->get_next());
+            p = p->get_next();
+        }
+    }
+}
+\ No newline at end of file
diff --git a/graphs/cpp/hot_potato/game.hh b/graphs/cpp/hot_potato/game.hh
new file mode 100644
index 0000000..fd65b28
--- /dev/null
+++ b/graphs/cpp/hot_potato/game.hh
@@ -0,0 +1,17 @@
+//
+// Created by martial.simon on 2/25/25.
+//
+
+#pragma once
+#include <memory>
+
+#include "player.hh"
+
+class Game {
+public:
+    void add_player(const std::string& name, size_t nb_presses);
+    void play(int bomb_ticks);
+private:
+    std::unique_ptr<Player> head_;
+    Player* tail_ = nullptr;
+};
diff --git a/graphs/cpp/hot_potato/main.cc b/graphs/cpp/hot_potato/main.cc
new file mode 100644
index 0000000..ce491d0
--- /dev/null
+++ b/graphs/cpp/hot_potato/main.cc
@@ -0,0 +1,20 @@
+//
+// Created by martial.simon on 2/25/25.
+//
+#include "game.hh"
+int main()
+{
+    auto game = Game();
+    game.add_player("Benjamin", 2);
+    game.add_player("Andy", 1);
+    game.add_player("Geoffrey", 3);
+    game.add_player("Hugo", 1);
+    game.add_player("Maayane", 2);
+    game.add_player("Quentin", 1);
+    game.add_player("Lucas", 5); // Likes risks
+    game.add_player("Tom", 1);
+    game.add_player("Alexis", 0); // Cheater
+    game.add_player("FX", 3);
+    game.add_player("Lois", 2);
+    game.play(12);
+}
+\ No newline at end of file
diff --git a/graphs/cpp/hot_potato/player.cc b/graphs/cpp/hot_potato/player.cc
new file mode 100644
index 0000000..3ab0f28
--- /dev/null
+++ b/graphs/cpp/hot_potato/player.cc
@@ -0,0 +1,63 @@
+//
+// Created by martial.simon on 2/25/25.
+//
+
+#include "player.hh"
+
+#include <iostream>
+Player::Player(const std::string& name, size_t nb_presses)
+    : name_{ name }
+    , bomb_{ nullptr }
+    , nb_presses_{ nb_presses }
+    , next_{ nullptr }
+{}
+Player* Player::get_next() const
+{
+    return next_.get();
+}
+void Player::set_next(std::unique_ptr<Player> next)
+{
+    next_ = std::move(next);
+}
+void Player::pass_bomb(Player& receiver)
+{
+    if (!this->has_bomb() || receiver.has_bomb())
+        throw std::runtime_error{
+            "Passer doesn't have the bomb or receiver already has it."
+        };
+    std::cout << this->get_name() << " passes the bomb to "
+              << receiver.get_name() << ".\n";
+    receiver.set_bomb(std::move(this->bomb_));
+    this->bomb_ = nullptr;
+}
+void Player::press_bomb()
+{
+    if (bomb_ == nullptr)
+        throw std::runtime_error{
+            "Can't press bomb if player doesn't have it."
+        };
+    if (bomb_->has_exploded())
+        return;
+    for (size_t i = 0; i < nb_presses_ && !bomb_->has_exploded(); ++i)
+    {
+        bomb_->tick();
+    }
+}
+void Player::set_bomb(std::unique_ptr<Bomb> bomb)
+{
+    this->bomb_ = std::move(bomb);
+}
+const std::string& Player::get_name() const
+{
+    return name_;
+}
+bool Player::has_bomb() const
+{
+    return bomb_ != nullptr;
+}
+bool Player::is_dead() const
+{
+    if (has_bomb())
+        return bomb_->has_exploded();
+    return false;
+}
+\ No newline at end of file
diff --git a/graphs/cpp/hot_potato/player.hh b/graphs/cpp/hot_potato/player.hh
new file mode 100644
index 0000000..0439305
--- /dev/null
+++ b/graphs/cpp/hot_potato/player.hh
@@ -0,0 +1,25 @@
+#pragma once
+#include <memory>
+#include <string>
+
+#include "bomb.hh"
+
+class Player
+{
+public:
+    Player(const std::string& name, size_t nb_presses);
+    Player* get_next() const;
+    void set_next(std::unique_ptr<Player> next);
+    void pass_bomb(Player& receiver);
+    void press_bomb();
+    void set_bomb(std::unique_ptr<Bomb> bomb);
+    const std::string& get_name() const;
+    bool has_bomb() const;
+    bool is_dead() const;
+
+private:
+    std::string name_;
+    std::unique_ptr<Bomb> bomb_;
+    size_t nb_presses_;
+    std::unique_ptr<Player> next_;
+};
+\ No newline at end of file