1 files changed, 146 insertions, 0 deletions
diff --git a/src/graphcoloring/graphcoloring.cpp b/src/graphcoloring/graphcoloring.cpp
new file mode 100644
index 0000000..246bfd0
--- /dev/null
+++ b/src/graphcoloring/graphcoloring.cpp
@@ -0,0 +1,146 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "graphcoloring.hpp"
+
+#include "utils/windows.hpp"
+#include "utils/filesystem.hpp"
+
+#include <sstream>
+
+namespace graphcoloring {
+
+namespace filesystem = utils::filesystem;
+
+const std::string GraphColoring::TITLE = "Graph Coloring";
+
+GraphColoring::GraphColoring()
+	: state(State::MAIN_MENU)
+{
+	window = new gui::Window("Graph Coloring", 800, 600);
+	CheckSaves();
+	window->OnActivate([this] (){ SwitchToMainMenu(); });
+}
+
+GraphColoring::~GraphColoring()
+{
+	DeleteAll();
+	delete window;
+}
+
+void GraphColoring::CheckSaves()
+{
+
+	if (filesystem::directory_exists("saves"))
+	{
+		// Check for version mismatch
+		pugi::xml_document saves_document;
+		saves_document.load_file(LevelSelect::LEVEL_LISTING_PATH);
+		pugi::xml_document assets_document;
+		assets_document.load_file("assets/levels/level-list.xml");
+		std::string saves_version(
+			saves_document.child("category-listing")
+						  .attribute("version").value());
+		std::string assets_version(
+				assets_document.child("category-listing")
+							   .attribute("version").value());
+
+		if (saves_version != assets_version)
+		{
+			// Copy new level list.
+			filesystem::remove_file(LevelSelect::LEVEL_LISTING_PATH);
+			filesystem::copy_file(
+				"assets/levels/level-list.xml",
+				LevelSelect::LEVEL_LISTING_PATH);
+		}
+		return;
+	}
+
+	// Create saves directory
+	filesystem::create_directory("saves");
+	filesystem::copy_file(
+		"assets/levels/level-list.xml", LevelSelect::LEVEL_LISTING_PATH);
+
+	pugi::xml_document document;
+	document.load_file(LevelSelect::LEVEL_LISTING_PATH);
+	for (pugi::xml_node category
+		: document.child("category-listing").children("category"))
+	{
+		std::stringstream filename;
+		filename << "saves/" << category.attribute("id").value();
+		filesystem::create_directory(filename.str());
+	}
+}
+
+void GraphColoring::DeleteAll()
+{
+	mainMenu = nullptr;
+	levelSelect = nullptr;
+	level = nullptr;
+	window->RemoveAllCallbacks();
+}
+
+void GraphColoring::SwitchToMainMenu()
+{
+	DeleteAll();
+	mainMenu = std::make_unique<MainMenu>(window,
+		[this] (){ SwitchToLevelSelect(); });
+
+	window->SetKeyupCallback([this] (gui::Window*){ // Press Escape to quit
+		window->Quit();
+	}, GDK_KEY_Escape);
+}
+
+void GraphColoring::SwitchToLevelSelect()
+{
+	DeleteAll();
+	auto callback = [this](std::string category_id,std::string level_id) {
+		SwitchToLevel(category_id, level_id);
+	};
+	levelSelect = std::make_unique<LevelSelect>(window, callback);
+	window->SetKeyupCallback([this] (gui::Window*){ // Press Escape to go back to menu
+		SwitchToMainMenu();
+	}, GDK_KEY_Escape);
+}
+
+void GraphColoring::SwitchToLevel(std::string category_id, std::string level_id)
+{
+	DeleteAll();
+	level = std::make_unique<Level>(window, category_id, level_id);
+	window->SetKeyupCallback([this] (gui::Window*) { // Press Escape to go back to level selection
+		level->Save();
+		SwitchToLevelSelect();
+	}, GDK_KEY_Escape);
+	window->SetKeyupCallback([this] (gui::Window*) { // Press Control-N to go to the next level
+		if (!window->IsControlDown()) return;
+		level->Save();
+		std::pair<std::string,std::string> next_level = level->NextLevel();
+		if (next_level.first.empty()) // No next level
+			SwitchToLevelSelect();
+		else
+			SwitchToLevel(next_level.first, next_level.second);
+	}, GDK_KEY_n);
+}
+
+void GraphColoring::Start()
+{
+	window->Mainloop();
+}
+
+
+} // namespace graphcoloring