1 files changed, 98 insertions, 0 deletions

diff --git a/2023/02/src/game.cpp b/2023/02/src/game.cpp
new file mode 100644
index 0000000..a99b8a2
--- /dev/null
+++ b/2023/02/src/game.cpp
@@ -0,0 +1,98 @@
+#include "game.h"
+
+#include <iostream>
+#include <sstream>
+
+Game::Game(int id) : id_{ id }
+{
+}
+
+void Game::push_back(const std::vector<int>& draw)
+{
+    draws.push_back(draw);
+}
+
+bool Game::is_valid(int blue, int red, int green) const
+{
+    for (const auto& draw : draws)
+    {
+        if (draw[0] > blue or draw[1] > red or draw[2] > green)
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+int Game::power() const
+{
+    int blue{}, red{}, green{};
+    for (const auto& draw : draws)
+    {
+        blue  = std::max(draw[0], blue);
+        red   = std::max(draw[1], red);
+        green = std::max(draw[2], green);
+    }
+
+    return blue * red * green;
+}
+
+std::string Game::to_string() const
+{
+    std::ostringstream out;
+    out << "Game " << id_ << ": ";
+    for (const auto& draw : draws)
+    {
+        out << draw[0] << " " << draw[1] << " " << draw[2] << ";";
+    }
+
+    return out.str();
+}
+
+Game Game::from_string(const std::string& line)
+{
+    std::istringstream in(line);
+
+    std::string id;
+    in >> skip<game_t> >> id;
+    id.pop_back();
+    Game game{ std::stoi(id) };
+
+    int n;
+    std::string kind;
+    std::vector<int> draw{ 0, 0, 0};
+
+    while (in >> n >> kind)
+    {
+        char sep{ kind.back() };
+        if (sep == ';' or sep == ',')
+        {
+            kind.pop_back();
+        }
+        else
+        {
+            sep = ';';
+        }
+
+        if (kind == "blue")
+        {
+            draw[0] += n;
+        }
+        else if (kind == "red")
+        {
+            draw[1] += n;
+        }
+        else if (kind == "green")
+        {
+            draw[2] += n;
+        }
+
+        if (sep == ';')
+        {
+            game.push_back(draw);
+            draw = { 0, 0, 0 };
+        }
+    }
+
+    return game;
+}