/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

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 <iomanip>
#include <cmath>
#include "client/renderingengine.h"
#include "camera.h"
#include "client.h"
#include "client/clientevent.h"
//#include "client/gameui.h"
#include "client/inputhandler.h"
#include "client/sound.h"
#include "client/tile.h"     // For TextureSource
#include "client/keys.h"
#include "client/joystick_controller.h"
#include "clientmap.h"
#include "clouds.h"
#include "config.h"
#include "content_cao.h"
#include "client/event_manager.h"
#include "fontengine.h"
#include "itemdef.h"
#include "log.h"
#include "filesys.h"
#include "gettext.h"
#include "gui/cheatMenu.h"
#include "gui/guiChatConsole.h"
#include "gui/guiConfirmRegistration.h"
#include "gui/guiFormSpecMenu.h"
#include "gui/guiKeyChangeMenu.h"
#include "gui/guiPasswordChange.h"
#include "gui/guiVolumeChange.h"
#include "gui/mainmenumanager.h"
#include "gui/profilergraph.h"
#include "mapblock.h"
#include "minimap.h"
#include "nodedef.h"         // Needed for determining pointing to nodes
#include "nodemetadata.h"
#include "particles.h"
#include "porting.h"
#include "profiler.h"
#include "raycast.h"
#include "server.h"
#include "settings.h"
#include "shader.h"
#include "sky.h"
#include "translation.h"
#include "util/basic_macros.h"
#include "util/directiontables.h"
#include "util/pointedthing.h"
#include "util/quicktune_shortcutter.h"
#include "irrlicht_changes/static_text.h"
#include "version.h"
#include "script/scripting_client.h"
#include "hud.h"
#include "irrlichttypes.h"
#include <string>

class InputHandler;
class ChatBackend;  /* to avoid having to include chat.h */
struct SubgameSpec;
struct GameStartData;

struct Jitter {
	f32 max, min, avg, counter, max_sample, min_sample, max_fraction;
};

struct RunStats {
	u32 drawtime;

	Jitter dtime_jitter, busy_time_jitter;
};

struct CameraOrientation {
	f32 camera_yaw;    // "right/left"
	f32 camera_pitch;  // "up/down"
};

/*
	Text input system
*/

struct TextDestNodeMetadata : public TextDest
{
	TextDestNodeMetadata(v3s16 p, Client *client)
	{
		m_p = p;
		m_client = client;
	}
	// This is deprecated I guess? -celeron55
	void gotText(const std::wstring &text)
	{
		std::string ntext = wide_to_utf8(text);
		infostream << "Submitting 'text' field of node at (" << m_p.X << ","
			   << m_p.Y << "," << m_p.Z << "): " << ntext << std::endl;
		StringMap fields;
		fields["text"] = ntext;
		m_client->sendNodemetaFields(m_p, "", fields);
	}
	void gotText(const StringMap &fields)
	{
		m_client->sendNodemetaFields(m_p, "", fields);
	}

	v3s16 m_p;
	Client *m_client;
};

struct TextDestPlayerInventory : public TextDest
{
	TextDestPlayerInventory(Client *client)
	{
		m_client = client;
		m_formname = "";
	}
	TextDestPlayerInventory(Client *client, const std::string &formname)
	{
		m_client = client;
		m_formname = formname;
	}
	void gotText(const StringMap &fields)
	{
		m_client->sendInventoryFields(m_formname, fields);
	}

	Client *m_client;
};

struct LocalFormspecHandler : public TextDest
{
	LocalFormspecHandler(const std::string &formname)
	{
		m_formname = formname;
	}

	LocalFormspecHandler(const std::string &formname, Client *client):
		m_client(client)
	{
		m_formname = formname;
	}

	void gotText(const StringMap &fields)
	{
		if (m_formname == "MT_PAUSE_MENU") {
			if (fields.find("btn_sound") != fields.end()) {
				g_gamecallback->changeVolume();
				return;
			}

			if (fields.find("btn_key_config") != fields.end()) {
				g_gamecallback->keyConfig();
				return;
			}

			if (fields.find("btn_exit_menu") != fields.end()) {
				g_gamecallback->disconnect();
				return;
			}

			if (fields.find("btn_exit_os") != fields.end()) {
				g_gamecallback->exitToOS();
#ifndef __ANDROID__
				RenderingEngine::get_raw_device()->closeDevice();
#endif
				return;
			}

			if (fields.find("btn_change_password") != fields.end()) {
				g_gamecallback->changePassword();
				return;
			}

			return;
		}

		if (m_formname == "MT_DEATH_SCREEN") {
			assert(m_client != 0);
			m_client->sendRespawn();
			return;
		}

		if (m_client->modsLoaded())
			m_client->getScript()->on_formspec_input(m_formname, fields);
	}

	Client *m_client = nullptr;
};

/* Form update callback */

class NodeMetadataFormSource: public IFormSource
{
public:
	NodeMetadataFormSource(ClientMap *map, v3s16 p):
		m_map(map),
		m_p(p)
	{
	}
	const std::string &getForm() const
	{
		static const std::string empty_string = "";
		NodeMetadata *meta = m_map->getNodeMetadata(m_p);

		if (!meta)
			return empty_string;

		return meta->getString("formspec");
	}

	virtual std::string resolveText(const std::string &str)
	{
		NodeMetadata *meta = m_map->getNodeMetadata(m_p);

		if (!meta)
			return str;

		return meta->resolveString(str);
	}

	ClientMap *m_map;
	v3s16 m_p;
};

class PlayerInventoryFormSource: public IFormSource
{
public:
	PlayerInventoryFormSource(Client *client):
		m_client(client)
	{
	}

	const std::string &getForm() const
	{
		LocalPlayer *player = m_client->getEnv().getLocalPlayer();
		return player->inventory_formspec;
	}

	Client *m_client;
};

class NodeDugEvent: public MtEvent
{
public:
	v3s16 p;
	MapNode n;

	NodeDugEvent(v3s16 p, MapNode n):
		p(p),
		n(n)
	{}
	MtEvent::Type getType() const
	{
		return MtEvent::NODE_DUG;
	}
};

class SoundMaker
{
	ISoundManager *m_sound;
	const NodeDefManager *m_ndef;
public:
	bool makes_footstep_sound;
	float m_player_step_timer;
	float m_player_jump_timer;

	SimpleSoundSpec m_player_step_sound;
	SimpleSoundSpec m_player_leftpunch_sound;
	SimpleSoundSpec m_player_rightpunch_sound;

	SoundMaker(ISoundManager *sound, const NodeDefManager *ndef):
		m_sound(sound),
		m_ndef(ndef),
		makes_footstep_sound(true),
		m_player_step_timer(0.0f),
		m_player_jump_timer(0.0f)
	{
	}

	void playPlayerStep()
	{
		if (m_player_step_timer <= 0 && m_player_step_sound.exists()) {
			m_player_step_timer = 0.03;
			if (makes_footstep_sound)
				m_sound->playSound(m_player_step_sound, false);
		}
	}

	void playPlayerJump()
	{
		if (m_player_jump_timer <= 0.0f) {
			m_player_jump_timer = 0.2f;
			m_sound->playSound(SimpleSoundSpec("player_jump", 0.5f), false);
		}
	}

	static void viewBobbingStep(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->playPlayerStep();
	}

	static void playerRegainGround(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->playPlayerStep();
	}

	static void playerJump(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->playPlayerJump();
	}

	static void cameraPunchLeft(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->m_sound->playSound(sm->m_player_leftpunch_sound, false);
	}

	static void cameraPunchRight(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->m_sound->playSound(sm->m_player_rightpunch_sound, false);
	}

	static void nodeDug(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		NodeDugEvent *nde = (NodeDugEvent *)e;
		sm->m_sound->playSound(sm->m_ndef->get(nde->n).sound_dug, false);
	}

	static void playerDamage(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->m_sound->playSound(SimpleSoundSpec("player_damage", 0.5), false);
	}

	static void playerFallingDamage(MtEvent *e, void *data)
	{
		SoundMaker *sm = (SoundMaker *)data;
		sm->m_sound->playSound(SimpleSoundSpec("player_falling_damage", 0.5), false);
	}

	void registerReceiver(MtEventManager *mgr)
	{
		mgr->reg(MtEvent::VIEW_BOBBING_STEP, SoundMaker::viewBobbingStep, this);
		mgr->reg(MtEvent::PLAYER_REGAIN_GROUND, SoundMaker::playerRegainGround, this);
		mgr->reg(MtEvent::PLAYER_JUMP, SoundMaker::playerJump, this);
		mgr->reg(MtEvent::CAMERA_PUNCH_LEFT, SoundMaker::cameraPunchLeft, this);
		mgr->reg(MtEvent::CAMERA_PUNCH_RIGHT, SoundMaker::cameraPunchRight, this);
		mgr->reg(MtEvent::NODE_DUG, SoundMaker::nodeDug, this);
		mgr->reg(MtEvent::PLAYER_DAMAGE, SoundMaker::playerDamage, this);
		mgr->reg(MtEvent::PLAYER_FALLING_DAMAGE, SoundMaker::playerFallingDamage, this);
	}

	void step(float dtime)
	{
		m_player_step_timer -= dtime;
		m_player_jump_timer -= dtime;
	}
};

// Locally stored sounds don't need to be preloaded because of this
class GameOnDemandSoundFetcher: public OnDemandSoundFetcher
{
	std::set<std::string> m_fetched;
private:
	void paths_insert(std::set<std::string> &dst_paths,
		const std::string &base,
		const std::string &name)
	{
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".0.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".1.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".2.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".3.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".4.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".5.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".6.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".7.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".8.ogg");
		dst_paths.insert(base + DIR_DELIM + "sounds" + DIR_DELIM + name + ".9.ogg");
	}
public:
	void fetchSounds(const std::string &name,
		std::set<std::string> &dst_paths,
		std::set<std::string> &dst_datas)
	{
		if (m_fetched.count(name))
			return;

		m_fetched.insert(name);

		paths_insert(dst_paths, porting::path_share, name);
		paths_insert(dst_paths, porting::path_user,  name);
	}
};


// before 1.8 there isn't a "integer interface", only float
#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
typedef f32 SamplerLayer_t;
#else
typedef s32 SamplerLayer_t;
#endif


class GameGlobalShaderConstantSetter : public IShaderConstantSetter
{
	Sky *m_sky;
	bool *m_force_fog_off;
	f32 *m_fog_range;
	bool m_fog_enabled;
	CachedPixelShaderSetting<float, 4> m_sky_bg_color;
	CachedPixelShaderSetting<float> m_fog_distance;
	CachedVertexShaderSetting<float> m_animation_timer_vertex;
	CachedPixelShaderSetting<float> m_animation_timer_pixel;
	CachedPixelShaderSetting<float, 3> m_day_light;
	CachedPixelShaderSetting<float, 4> m_star_color;
	CachedPixelShaderSetting<float, 3> m_eye_position_pixel;
	CachedVertexShaderSetting<float, 3> m_eye_position_vertex;
	CachedPixelShaderSetting<float, 3> m_minimap_yaw;
	CachedPixelShaderSetting<float, 3> m_camera_offset_pixel;
	CachedPixelShaderSetting<float, 3> m_camera_offset_vertex;
	CachedPixelShaderSetting<SamplerLayer_t> m_base_texture;
	Client *m_client;

public:
	void onSettingsChange(const std::string &name)
	{
		if (name == "enable_fog")
			m_fog_enabled = g_settings->getBool("enable_fog");
	}

	static void settingsCallback(const std::string &name, void *userdata)
	{
		reinterpret_cast<GameGlobalShaderConstantSetter*>(userdata)->onSettingsChange(name);
	}

	void setSky(Sky *sky) { m_sky = sky; }

	GameGlobalShaderConstantSetter(Sky *sky, bool *force_fog_off,
			f32 *fog_range, Client *client) :
		m_sky(sky),
		m_force_fog_off(force_fog_off),
		m_fog_range(fog_range),
		m_sky_bg_color("skyBgColor"),
		m_fog_distance("fogDistance"),
		m_animation_timer_vertex("animationTimer"),
		m_animation_timer_pixel("animationTimer"),
		m_day_light("dayLight"),
		m_star_color("starColor"),
		m_eye_position_pixel("eyePosition"),
		m_eye_position_vertex("eyePosition"),
		m_minimap_yaw("yawVec"),
		m_camera_offset_pixel("cameraOffset"),
		m_camera_offset_vertex("cameraOffset"),
		m_base_texture("baseTexture"),
		m_client(client)
	{
		g_settings->registerChangedCallback("enable_fog", settingsCallback, this);
		m_fog_enabled = g_settings->getBool("enable_fog");
	}

	~GameGlobalShaderConstantSetter()
	{
		g_settings->deregisterChangedCallback("enable_fog", settingsCallback, this);
	}

	void onSetConstants(video::IMaterialRendererServices *services) override
	{
		// Background color
		video::SColor bgcolor = m_sky->getBgColor();
		video::SColorf bgcolorf(bgcolor);
		float bgcolorfa[4] = {
			bgcolorf.r,
			bgcolorf.g,
			bgcolorf.b,
			bgcolorf.a,
		};
		m_sky_bg_color.set(bgcolorfa, services);

		// Fog distance
		float fog_distance = 10000 * BS;

		if (m_fog_enabled && !*m_force_fog_off)
			fog_distance = *m_fog_range;

		m_fog_distance.set(&fog_distance, services);

		u32 daynight_ratio = (float)m_client->getEnv().getDayNightRatio();
		video::SColorf sunlight;
		get_sunlight_color(&sunlight, daynight_ratio);
		float dnc[3] = {
			sunlight.r,
			sunlight.g,
			sunlight.b };
		m_day_light.set(dnc, services);

		video::SColorf star_color = m_sky->getCurrentStarColor();
		float clr[4] = {star_color.r, star_color.g, star_color.b, star_color.a};
		m_star_color.set(clr, services);

		u32 animation_timer = porting::getTimeMs() % 1000000;
		float animation_timer_f = (float)animation_timer / 100000.f;
		m_animation_timer_vertex.set(&animation_timer_f, services);
		m_animation_timer_pixel.set(&animation_timer_f, services);

		float eye_position_array[3];
		v3f epos = m_client->getEnv().getLocalPlayer()->getEyePosition();
#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
		eye_position_array[0] = epos.X;
		eye_position_array[1] = epos.Y;
		eye_position_array[2] = epos.Z;
#else
		epos.getAs3Values(eye_position_array);
#endif
		m_eye_position_pixel.set(eye_position_array, services);
		m_eye_position_vertex.set(eye_position_array, services);

		if (m_client->getMinimap()) {
			float minimap_yaw_array[3];
			v3f minimap_yaw = m_client->getMinimap()->getYawVec();
#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
			minimap_yaw_array[0] = minimap_yaw.X;
			minimap_yaw_array[1] = minimap_yaw.Y;
			minimap_yaw_array[2] = minimap_yaw.Z;
#else
			minimap_yaw.getAs3Values(minimap_yaw_array);
#endif
			m_minimap_yaw.set(minimap_yaw_array, services);
		}

		float camera_offset_array[3];
		v3f offset = intToFloat(m_client->getCamera()->getOffset(), BS);
#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
		camera_offset_array[0] = offset.X;
		camera_offset_array[1] = offset.Y;
		camera_offset_array[2] = offset.Z;
#else
		offset.getAs3Values(camera_offset_array);
#endif
		m_camera_offset_pixel.set(camera_offset_array, services);
		m_camera_offset_vertex.set(camera_offset_array, services);

		SamplerLayer_t base_tex = 0;
		m_base_texture.set(&base_tex, services);
	}
};


class GameGlobalShaderConstantSetterFactory : public IShaderConstantSetterFactory
{
	Sky *m_sky;
	bool *m_force_fog_off;
	f32 *m_fog_range;
	Client *m_client;
	std::vector<GameGlobalShaderConstantSetter *> created_nosky;
public:
	GameGlobalShaderConstantSetterFactory(bool *force_fog_off,
			f32 *fog_range, Client *client) :
		m_sky(NULL),
		m_force_fog_off(force_fog_off),
		m_fog_range(fog_range),
		m_client(client)
	{}

	void setSky(Sky *sky) {
		m_sky = sky;
		for (GameGlobalShaderConstantSetter *ggscs : created_nosky) {
			ggscs->setSky(m_sky);
		}
		created_nosky.clear();
	}

	virtual IShaderConstantSetter* create()
	{
		auto *scs = new GameGlobalShaderConstantSetter(
				m_sky, m_force_fog_off, m_fog_range, m_client);
		if (!m_sky)
			created_nosky.push_back(scs);
		return scs;
	}
};

#ifdef __ANDROID__
#define SIZE_TAG "size[11,5.5]"
#else
#define SIZE_TAG "size[11,5.5,true]" // Fixed size on desktop
#endif

/****************************************************************************
 ****************************************************************************/

const float object_hit_delay = 0.2;

struct FpsControl {
	u32 last_time, busy_time, sleep_time;
};


/* The reason the following structs are not anonymous structs within the
 * class is that they are not used by the majority of member functions and
 * many functions that do require objects of thse types do not modify them
 * (so they can be passed as a const qualified parameter)
 */

struct GameRunData {
	u16 dig_index;
	u16 new_playeritem;
	PointedThing pointed_old;
	bool digging;
	bool punching;
	bool btn_down_for_dig;
	bool dig_instantly;
	bool digging_blocked;
	bool reset_jump_timer;
	float nodig_delay_timer;
	float dig_time;
	float dig_time_complete;
	float repeat_place_timer;
	float object_hit_delay_timer;
	float time_from_last_punch;
	ClientActiveObject *selected_object;

	float jump_timer;
	float damage_flash;
	float update_draw_list_timer;

	f32 fog_range;

	v3f update_draw_list_last_cam_dir;

	float time_of_day_smooth;
};

class Game;

struct ClientEventHandler
{
	void (Game::*handler)(ClientEvent *, CameraOrientation *);
};

class Game {
public:
	Game();
	~Game();

	bool startup(bool *kill,
			InputHandler *input,
			const GameStartData &game_params,
			std::string &error_message,
			bool *reconnect,
			ChatBackend *chat_backend);


	void run();
	void shutdown();

	void extendedResourceCleanup();

	// Basic initialisation
	bool init(const std::string &map_dir, const std::string &address,
			u16 port, const SubgameSpec &gamespec);
	bool initSound();
	bool createSingleplayerServer(const std::string &map_dir,
			const SubgameSpec &gamespec, u16 port);

	// Client creation
	bool createClient(const GameStartData &start_data);
	bool initGui();

	// Client connection
	bool connectToServer(const GameStartData &start_data,
			bool *connect_ok, bool *aborted);
	bool getServerContent(bool *aborted);

	// Main loop

	void updateInteractTimers(f32 dtime);
	bool checkConnection();
	bool handleCallbacks();
	void processQueues();
	void updateProfilers(const RunStats &stats, const FpsControl &draw_times, f32 dtime);
	void updateStats(RunStats *stats, const FpsControl &draw_times, f32 dtime);
	void updateProfilerGraphs(ProfilerGraph *graph);

	// Input related
	void processUserInput(f32 dtime);
	void processKeyInput();
	void processItemSelection(u16 *new_playeritem);

	void dropSelectedItem(bool single_item = false);
	void openInventory();
	void openEnderchest();
	void openConsole(float scale, const wchar_t *line=NULL);
	void toggleFreeMove();
	void toggleFreeMoveAlt();
	void togglePitchMove();
	void toggleFast();
	void toggleNoClip();
	void toggleKillaura();
	void toggleFreecam();
	void toggleScaffold();
	void toggleNextItem();
	void toggleCinematic();
	void toggleAutoforward();

	void toggleMinimap(bool shift_pressed);
	void toggleFog();
	void toggleDebug();
	void toggleUpdateCamera();
	void updatePlayerCAOVisibility();

	void increaseViewRange();
	void decreaseViewRange();
	void toggleFullViewRange();
	void checkZoomEnabled();

	void updateCameraDirection(CameraOrientation *cam, float dtime);
	void updateCameraOrientation(CameraOrientation *cam, float dtime);
	void updatePlayerControl(const CameraOrientation &cam);
	void step(f32 *dtime);
	void processClientEvents(CameraOrientation *cam);
	void updateCamera(u32 busy_time, f32 dtime);
	void updateSound(f32 dtime);
	void processPlayerInteraction(f32 dtime, bool show_hud, bool show_debug);
	/*!
	 * Returns the object or node the player is pointing at.
	 * Also updates the selected thing in the Hud.
	 *
	 * @param[in]  shootline         the shootline, starting from
	 * the camera position. This also gives the maximal distance
	 * of the search.
	 * @param[in]  liquids_pointable if false, liquids are ignored
	 * @param[in]  look_for_object   if false, objects are ignored
	 * @param[in]  camera_offset     offset of the camera
	 * @param[out] selected_object   the selected object or
	 * NULL if not found
	 */
	PointedThing updatePointedThing(
			const core::line3d<f32> &shootline, bool liquids_pointable,
			bool look_for_object, const v3s16 &camera_offset);
	void handlePointingAtNothing(const ItemStack &playerItem);
	void handlePointingAtNode(const PointedThing &pointed,
			const ItemStack &selected_item, const ItemStack &hand_item, f32 dtime);
	void handlePointingAtObject(const PointedThing &pointed, const ItemStack &playeritem,
			const v3f &player_position, bool show_debug);
	void handleDigging(const PointedThing &pointed, const v3s16 &nodepos,
			const ItemStack &selected_item, const ItemStack &hand_item, f32 dtime);
	void updateFrame(ProfilerGraph *graph, RunStats *stats, f32 dtime,
			const CameraOrientation &cam);

	// Misc
	void limitFps(FpsControl *fps_timings, f32 *dtime);

	void showOverlayMessage(const char *msg, float dtime, int percent,
			bool draw_clouds = true);

	static void freecamChangedCallback(const std::string &setting_name, void *data);
	static void settingChangedCallback(const std::string &setting_name, void *data);
	static void updateAllMapBlocksCallback(const std::string &setting_name, void *data);
	void readSettings();

	bool isKeyDown(GameKeyType k);
	bool wasKeyDown(GameKeyType k);
	bool wasKeyPressed(GameKeyType k);
	bool wasKeyReleased(GameKeyType k);

#ifdef __ANDROID__
	void handleAndroidChatInput();
#endif

	struct Flags {
		bool force_fog_off = false;
		bool disable_camera_update = false;
	};

	void showDeathFormspec();
	void showPauseMenu();

	// ClientEvent handlers
	void handleClientEvent_None(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_PlayerDamage(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_PlayerForceMove(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_Deathscreen(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_ShowFormSpec(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_ShowLocalFormSpec(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_HandleParticleEvent(ClientEvent *event,
		CameraOrientation *cam);
	void handleClientEvent_HudAdd(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_HudRemove(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_HudChange(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_SetSky(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_SetSun(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_SetMoon(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_SetStars(ClientEvent *event, CameraOrientation *cam);
	void handleClientEvent_OverrideDayNigthRatio(ClientEvent *event,
		CameraOrientation *cam);
	void handleClientEvent_CloudParams(ClientEvent *event, CameraOrientation *cam);

	void updateChat(f32 dtime, const v2u32 &screensize);

	bool nodePlacement(const ItemDefinition &selected_def, const ItemStack &selected_item,
		const v3s16 &nodepos, const v3s16 &neighbourpos, const PointedThing &pointed,
		const NodeMetadata *meta);
	static const ClientEventHandler clientEventHandler[CLIENTEVENT_MAX];

	InputHandler *input = nullptr;

	Client *client = nullptr;
	Server *server = nullptr;

	IWritableTextureSource *texture_src = nullptr;
	IWritableShaderSource *shader_src = nullptr;

	// When created, these will be filled with data received from the server
	IWritableItemDefManager *itemdef_manager = nullptr;
	NodeDefManager *nodedef_manager = nullptr;

	GameOnDemandSoundFetcher soundfetcher; // useful when testing
	ISoundManager *sound = nullptr;
	bool sound_is_dummy = false;
	SoundMaker *soundmaker = nullptr;

	ChatBackend *chat_backend = nullptr;
	LogOutputBuffer m_chat_log_buf;

	EventManager *eventmgr = nullptr;
	QuicktuneShortcutter *quicktune = nullptr;
	bool registration_confirmation_shown = false;

	std::unique_ptr<GameUI> m_game_ui;
	GUIChatConsole *gui_chat_console = nullptr; // Free using ->Drop()
	CheatMenu *m_cheat_menu = nullptr;
	MapDrawControl *draw_control = nullptr;
	Camera *camera = nullptr;
	Clouds *clouds = nullptr;	                  // Free using ->Drop()
	Sky *sky = nullptr;                         // Free using ->Drop()
	Hud *hud = nullptr;
	Minimap *mapper = nullptr;

	GameRunData runData;
	Flags m_flags;

	/* 'cache'
	   This class does take ownership/responsibily for cleaning up etc of any of
	   these items (e.g. device)
	*/
	IrrlichtDevice *device;
	video::IVideoDriver *driver;
	scene::ISceneManager *smgr;
	bool *kill;
	std::string *error_message;
	bool *reconnect_requested;
	scene::ISceneNode *skybox;

	bool simple_singleplayer_mode;
	/* End 'cache' */

	/* Pre-calculated values
	 */
	int crack_animation_length;

	IntervalLimiter profiler_interval;

	/*
	 * TODO: Local caching of settings is not optimal and should at some stage
	 *       be updated to use a global settings object for getting thse values
	 *       (as opposed to the this local caching). This can be addressed in
	 *       a later release.
	 */
	bool m_cache_doubletap_jump;
	bool m_cache_enable_clouds;
	bool m_cache_enable_joysticks;
	bool m_cache_enable_particles;
	bool m_cache_enable_fog;
	bool m_cache_enable_noclip;
	bool m_cache_enable_free_move;
	f32  m_cache_mouse_sensitivity;
	f32  m_cache_joystick_frustum_sensitivity;
	f32  m_repeat_place_time;
	f32  m_cache_cam_smoothing;
	f32  m_cache_fog_start;

	bool m_invert_mouse = false;
	bool m_first_loop_after_window_activation = false;
	bool m_camera_offset_changed = false;

	bool m_does_lost_focus_pause_game = false;

	CameraOrientation cam_view_target  = { 0 };
	CameraOrientation cam_view  = { 0 };

	int m_reset_HW_buffer_counter = 0;
#ifdef __ANDROID__
	bool m_cache_hold_aux1;
	bool m_android_chat_open;
#endif
};
extern Game *g_game;

void the_game(bool *kill,
		InputHandler *input,
		const GameStartData &start_data,
		std::string &error_message,
		ChatBackend &chat_backend,
		bool *reconnect_requested);