GameUI refactor (part 1/X): GameUI object creation + GameUIFlags move to GameUI

Game class is too huge and has too specialization on various subjects, like UI, formspecs, client, renderer. Start to move UI related things to GameUI object and cleanup them

Other improvements:
* updateChat: more performance on error messages by remove string copies
* Initialize all game class members in definition instead of constructor (with nullptr instead of NULL)
* Drop unused Client::show{GameChat,GameHud,Profiler,GameFog}
* Add GameUI unittests

1 files changed, 60 insertions, 0 deletions

diff --git a/src/client/gameui.h b/src/client/gameui.h
new file mode 100644
index 000000000..bd9c0f626
--- /dev/null
+++ b/src/client/gameui.h
@@ -0,0 +1,60 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2018 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include "IGUIEnvironment.h"
+
+using namespace irr;
+
+class GameUI
+{
+	// Temporary between coding time to move things here
+	friend class Game;
+
+public:
+	// Flags that can, or may, change during main game loop
+	struct Flags
+	{
+		bool show_chat;
+		bool show_hud;
+		bool show_minimap;
+		bool force_fog_off;
+		bool show_debug;
+		bool show_profiler_graph;
+		bool disable_camera_update;
+	};
+
+	void initFlags();
+	const Flags &getFlags() const { return m_flags; }
+
+	void showMinimap(const bool show);
+
+private:
+	Flags m_flags;
+
+	// @TODO future move
+	//	gui::IGUIStaticText *m_guitext;          // First line of debug text
+	//	gui::IGUIStaticText *m_guitext2;         // Second line of debug text
+	//	gui::IGUIStaticText *m_guitext_info;     // At the middle of the screen
+	//	gui::IGUIStaticText *m_guitext_status;
+	//	gui::IGUIStaticText *m_guitext_chat;	 // Chat text
+	//	gui::IGUIStaticText *m_guitext_profiler; // Profiler text
+};