/**
 * @file diablo.cpp
 *
 * Implementation of the main game initialization functions.
 */
#include "all.h"
#include "paths.h"
#include "console.h"
#include "options.h"
#include "../3rdParty/Storm/Source/storm.h"
#include "../DiabloUI/diabloui.h"
#include <config.h>

DEVILUTION_BEGIN_NAMESPACE

SDL_Window *ghMainWnd;
DWORD glSeedTbl[NUMLEVELS];
dungeon_type gnLevelTypeTbl[NUMLEVELS];
int glEndSeed[NUMLEVELS];
int glMid1Seed[NUMLEVELS];
int glMid2Seed[NUMLEVELS];
int glMid3Seed[NUMLEVELS];
int MouseX;
int MouseY;
BOOL gbGameLoopStartup;
BOOL gbRunGame;
BOOL gbRunGameResult;
BOOL zoomflag;
/** Enable updating of player character, set to false once Diablo dies */
BOOL gbProcessPlayers;
bool gbLoadGame;
BOOLEAN cineflag;
int force_redraw;
BOOL light4flag;
int setseed;
int PauseMode;
bool forceSpawn;
bool forceDiablo;
bool gbTheoQuest;
bool gbCowQuest;
bool gbNestArt;
bool gbBard;
bool gbBarbarian;
int sgnTimeoutCurs;
char sgbMouseDown;
int color_cycle_timer;
int gnTickRate;
WORD gnTickDelay = 50;
/** Game options */
Options sgOptions;

/* rdata */

bool gbForceWindowed = false;
bool gbShowIntro = true;
bool leveldebug = false;
#ifdef _DEBUG
bool monstdebug = false;
_monster_id DebugMonsters[10];
int debugmonsttypes = 0;
bool visiondebug = false;
int questdebug = -1;
bool debug_mode_key_s = false;
bool debug_mode_key_w = false;
bool debug_mode_key_inverted_v = false;
bool debug_mode_dollar_sign = false;
bool debug_mode_key_d = false;
bool debug_mode_key_i = false;
int debug_mode_key_j = 0;
int arrowdebug = 0;
#endif
/** Specifies whether players are in non-PvP mode. */
bool gbFriendlyMode = true;
/** Specifies players will still damage other players in non-PvP mode. */
bool gbFriendlyFire;
/** Default quick messages */
const char *const spszMsgTbl[] = {
	"I need help! Come Here!",
	"Follow me.",
	"Here's something for you.",
	"Now you DIE!"
};
/** INI files variable names for quick message keys */
const char *const spszMsgHotKeyTbl[] = { "F9", "F10", "F11", "F12" };

/** To know if these things have been done when we get to the diablo_deinit() function */
bool was_archives_init = false;
/** To know if surfaces have been initialized or not */
bool was_window_init = false;
bool was_ui_init = false;
bool was_snd_init = false;
bool sbWasOptionsLoaded = false;

// Controller support:
extern void plrctrls_every_frame();
extern void plrctrls_after_game_logic();

[[noreturn]] static void print_help_and_exit()
{
	printInConsole("Options:\n");
	printInConsole("    %-20s %-30s\n", "-h, --help", "Print this message and exit");
	printInConsole("    %-20s %-30s\n", "--version", "Print the version and exit");
	printInConsole("    %-20s %-30s\n", "--data-dir", "Specify the folder of diabdat.mpq");
	printInConsole("    %-20s %-30s\n", "--save-dir", "Specify the folder of save files");
	printInConsole("    %-20s %-30s\n", "--config-dir", "Specify the location of diablo.ini");
	printInConsole("    %-20s %-30s\n", "--ttf-dir", "Specify the location of the .ttf font");
	printInConsole("    %-20s %-30s\n", "--ttf-name", "Specify the name of a custom .ttf font");
	printInConsole("    %-20s %-30s\n", "-n", "Skip startup videos");
	printInConsole("    %-20s %-30s\n", "-f", "Display frames per second");
	printInConsole("    %-20s %-30s\n", "-x", "Run in windowed mode");
	printInConsole("    %-20s %-30s\n", "--spawn", "Force spawn mode even if diabdat.mpq is found");
	printInConsole("\nHellfire options:\n");
	printInConsole("    %-20s %-30s\n", "--diablo", "Force diablo mode even if hellfire.mpq is found");
	printInConsole("    %-20s %-30s\n", "--nestart", "Use alternate nest palette");
#ifdef _DEBUG
	printInConsole("\nDebug options:\n");
	printInConsole("    %-20s %-30s\n", "-d", "Increaased item drops");
	printInConsole("    %-20s %-30s\n", "-w", "Enable cheats");
	printInConsole("    %-20s %-30s\n", "-$", "Enable god mode");
	printInConsole("    %-20s %-30s\n", "-^", "Enable god mode and debug tools");
	printInConsole("    %-20s %-30s\n", "-v", "Highlight visibility");
	printInConsole("    %-20s %-30s\n", "-i", "Ignore network timeout");
	printInConsole("    %-20s %-30s\n", "-j <##>", "Mausoleum warps to given level");
	printInConsole("    %-20s %-30s\n", "-l <##> <##>", "Start in level as type");
	printInConsole("    %-20s %-30s\n", "-m <##>", "Add debug monster, up to 10 allowed");
	printInConsole("    %-20s %-30s\n", "-q <#>", "Force a certain quest");
	printInConsole("    %-20s %-30s\n", "-r <##########>", "Set map seed");
	printInConsole("    %-20s %-30s\n", "-t <##>", "Set current quest level");
#endif
	printInConsole("\nReport bugs at https://github.com/diasurgical/devilutionX/\n");
	diablo_quit(0);
}

static void diablo_parse_flags(int argc, char **argv)
{
	for (int i = 1; i < argc; i++) {
		if (strcasecmp("-h", argv[i]) == 0 || strcasecmp("--help", argv[i]) == 0) {
			print_help_and_exit();
		} else if (strcasecmp("--version", argv[i]) == 0) {
			printInConsole("%s v%s\n", PROJECT_NAME, PROJECT_VERSION);
			diablo_quit(0);
		} else if (strcasecmp("--data-dir", argv[i]) == 0) {
			SetBasePath(argv[++i]);
		} else if (strcasecmp("--save-dir", argv[i]) == 0) {
			SetPrefPath(argv[++i]);
		} else if (strcasecmp("--config-dir", argv[i]) == 0) {
			SetConfigPath(argv[++i]);
		} else if (strcasecmp("--ttf-dir", argv[i]) == 0) {
			SetTtfPath(argv[++i]);
		} else if (strcasecmp("--ttf-name", argv[i]) == 0) {
			SetTtfName(argv[++i]);
		} else if (strcasecmp("-n", argv[i]) == 0) {
			gbShowIntro = false;
		} else if (strcasecmp("-f", argv[i]) == 0) {
			EnableFrameCount();
		} else if (strcasecmp("-x", argv[i]) == 0) {
			gbForceWindowed = true;
		} else if (strcasecmp("--spawn", argv[i]) == 0) {
			forceSpawn = true;
		} else if (strcasecmp("--diablo", argv[i]) == 0) {
			forceDiablo = true;
		} else if (strcasecmp("--nestart", argv[i]) == 0) {
			gbNestArt = true;
		} else if (strcasecmp("--vanilla", argv[i]) == 0) {
			gbVanilla = true;
#ifdef _DEBUG
		} else if (strcasecmp("-^", argv[i]) == 0) {
			debug_mode_key_inverted_v = true;
		} else if (strcasecmp("-$", argv[i]) == 0) {
			debug_mode_dollar_sign = true;
		} else if (strcasecmp("-d", argv[i]) == 0) {
			debug_mode_key_d = true;
		} else if (strcasecmp("-i", argv[i]) == 0) {
			debug_mode_key_i = true;
		} else if (strcasecmp("-j", argv[i]) == 0) {
			debug_mode_key_j = SDL_atoi(argv[++i]);
		} else if (strcasecmp("-l", argv[i]) == 0) {
			setlevel = FALSE;
			leveldebug = true;
			leveltype = (dungeon_type)SDL_atoi(argv[++i]);
			currlevel = SDL_atoi(argv[++i]);
			plr[0].plrlevel = currlevel;
		} else if (strcasecmp("-m", argv[i]) == 0) {
			monstdebug = true;
			DebugMonsters[debugmonsttypes++] = (_monster_id)SDL_atoi(argv[++i]);
		} else if (strcasecmp("-q", argv[i]) == 0) {
			questdebug = SDL_atoi(argv[++i]);
		} else if (strcasecmp("-r", argv[i]) == 0) {
			setseed = SDL_atoi(argv[++i]);
		} else if (strcasecmp("-s", argv[i]) == 0) {
			debug_mode_key_s = true;
		} else if (strcasecmp("-t", argv[i]) == 0) {
			leveldebug = true;
			setlevel = true;
			setlvlnum = SDL_atoi(argv[++i]);
		} else if (strcasecmp("-v", argv[i]) == 0) {
			visiondebug = true;
		} else if (strcasecmp("-w", argv[i]) == 0) {
			debug_mode_key_w = true;
#endif
		} else {
			printInConsole("unrecognized option '%s'\n", argv[i]);
			print_help_and_exit();
		}
	}
}

void FreeGameMem()
{
	music_stop();

	MemFreeDbg(pDungeonCels);
	MemFreeDbg(pMegaTiles);
	MemFreeDbg(pLevelPieces);
	MemFreeDbg(pSpecialCels);

	FreeMissiles();
	FreeMonsters();
	FreeObjectGFX();
	FreeMonsterSnd();
	FreeTownerGFX();
}

static void start_game(interface_mode uMsg)
{
	zoomflag = TRUE;
	CalcViewportGeometry();
	cineflag = FALSE;
	InitCursor();
	InitLightTable();
#ifdef _DEBUG
	LoadDebugGFX();
#endif
	assert(ghMainWnd);
	music_stop();
	InitQol();
	ShowProgress(uMsg);
	gmenu_init_menu();
	InitLevelCursor();
	sgnTimeoutCurs = CURSOR_NONE;
	sgbMouseDown = CLICK_NONE;
	track_repeat_walk(FALSE);
}

static void free_game()
{
	int i;

	FreeQol();
	FreeControlPan();
	FreeInvGFX();
	FreeGMenu();
	FreeQuestText();
	FreeStoreMem();

	for (i = 0; i < MAX_PLRS; i++)
		FreePlayerGFX(i);

	FreeItemGFX();
	FreeCursor();
	FreeLightTable();
#ifdef _DEBUG
	FreeDebugGFX();
#endif
	FreeGameMem();
}

// Controller support: Actions to run after updating the cursor state.
// Defined in SourceX/controls/plctrls.cpp.
extern void finish_simulated_mouse_clicks(int current_mouse_x, int current_mouse_y);
extern void plrctrls_after_check_curs_move();

static bool ProcessInput()
{
	if (PauseMode == 2) {
		return false;
	}

	plrctrls_every_frame();

	if (!gbIsMultiplayer && gmenu_is_active()) {
		force_redraw |= 1;
		return false;
	}

	if (!gmenu_is_active() && sgnTimeoutCurs == CURSOR_NONE) {
#ifndef USE_SDL1
		finish_simulated_mouse_clicks(MouseX, MouseY);
#endif
		CheckCursMove();
		plrctrls_after_check_curs_move();
		track_process();
	}

	return true;
}

static void run_game_loop(interface_mode uMsg)
{
	WNDPROC saveProc;
	MSG msg;

	nthread_ignore_mutex(TRUE);
	start_game(uMsg);
	assert(ghMainWnd);
	saveProc = SetWindowProc(GM_Game);
	control_update_life_mana();
	run_delta_info();
	gbRunGame = TRUE;
	gbProcessPlayers = TRUE;
	gbRunGameResult = TRUE;
	force_redraw = 255;
	DrawAndBlit();
	LoadPWaterPalette();
	PaletteFadeIn(8);
	force_redraw = 255;
	gbGameLoopStartup = TRUE;
	nthread_ignore_mutex(FALSE);

	while (gbRunGame) {
		while (FetchMessage(&msg)) {
			if (msg.message == DVL_WM_QUIT) {
				gbRunGameResult = FALSE;
				gbRunGame = FALSE;
				break;
			}
			TranslateMessage(&msg);
			PushMessage(&msg);
		}
		if (!gbRunGame)
			break;
		if (!nthread_has_500ms_passed()) {
			ProcessInput();
			force_redraw |= 1;
			DrawAndBlit();
			continue;
		}
		diablo_color_cyc_logic();
		multi_process_network_packets();
		game_loop(gbGameLoopStartup);
		gbGameLoopStartup = FALSE;
		DrawAndBlit();
	}

	if (gbIsMultiplayer) {
		pfile_write_hero();
	}

	pfile_flush_W();
	PaletteFadeOut(8);
	NewCursor(CURSOR_NONE);
	ClearScreenBuffer();
	force_redraw = 255;
	scrollrt_draw_game_screen(TRUE);
	saveProc = SetWindowProc(saveProc);
	assert(saveProc == GM_Game);
	free_game();

	if (cineflag) {
		cineflag = FALSE;
		DoEnding();
	}
}

BOOL StartGame(BOOL bNewGame, BOOL bSinglePlayer)
{
	BOOL fExitProgram;

	gbSelectProvider = TRUE;

	do {
		fExitProgram = FALSE;
		gbLoadGame = false;

		if (!NetInit(bSinglePlayer, &fExitProgram)) {
			gbRunGameResult = !fExitProgram;
			break;
		}

		// Save 2.8 MiB of RAM by freeing all main menu resources
		// before starting the game.
		UiDestroy();

		gbSelectProvider = FALSE;

		if (bNewGame || !gbValidSaveFile) {
			InitLevels();
			InitQuests();
			InitPortals();
			InitDungMsgs(myplr);
		}
		interface_mode uMsg = WM_DIABNEWGAME;
		if (gbValidSaveFile && gbLoadGame) {
			uMsg = WM_DIABLOADGAME;
		}
		run_game_loop(uMsg);
		NetClose();
		pfile_create_player_description();

		// If the player left the game into the main menu,
		// initialize main menu resources.
		if (gbRunGameResult)
			UiInitialize();
	} while (gbRunGameResult);

	SNetDestroy();
	return gbRunGameResult;
}

/**
 * @brief Save game configurations to ini file
 */
static void SaveOptions()
{
	setIniInt("Diablo", "Intro", sgOptions.Diablo.bIntro);
	setIniInt("Hellfire", "Intro", sgOptions.Hellfire.bIntro);
	setIniValue("Hellfire", "SItem", sgOptions.Hellfire.szItem);

	setIniInt("Audio", "Sound Volume", sgOptions.Audio.nSoundVolume);
	setIniInt("Audio", "Music Volume", sgOptions.Audio.nMusicVolume);
	setIniInt("Audio", "Walking Sound", sgOptions.Audio.bWalkingSound);
	setIniInt("Audio", "Auto Equip Sound", sgOptions.Audio.bAutoEquipSound);

#ifndef __vita__
	setIniInt("Graphics", "Width", sgOptions.Graphics.nWidth);
	setIniInt("Graphics", "Height", sgOptions.Graphics.nHeight);
#endif
	setIniInt("Graphics", "Fullscreen", sgOptions.Graphics.bFullscreen);
#ifndef __vita__
	setIniInt("Graphics", "Upscale", sgOptions.Graphics.bUpscale);
#endif
	setIniInt("Graphics", "Fit to Screen", sgOptions.Graphics.bFitToScreen);
	setIniValue("Graphics", "Scaling Quality", sgOptions.Graphics.szScaleQuality);
	setIniInt("Graphics", "Integer Scaling", sgOptions.Graphics.bIntegerScaling);
	setIniInt("Graphics", "Vertical Sync", sgOptions.Graphics.bVSync);
	setIniInt("Graphics", "Blended Transparency", sgOptions.Graphics.bBlendedTransparancy);
	setIniInt("Graphics", "Gamma Correction", sgOptions.Graphics.nGammaCorrection);
	setIniInt("Graphics", "Color Cycling", sgOptions.Graphics.bColorCycling);
	setIniInt("Graphics", "FPS Limiter", sgOptions.Graphics.bFPSLimit);

	setIniInt("Game", "Speed", sgOptions.Gameplay.nTickRate);
	setIniInt("Game", "Run in Town", sgOptions.Gameplay.bRunInTown);
	setIniInt("Game", "Grab Input", sgOptions.Gameplay.bGrabInput);
	setIniInt("Game", "Theo Quest", sgOptions.Gameplay.bTheoQuest);
	setIniInt("Game", "Cow Quest", sgOptions.Gameplay.bCowQuest);
	setIniInt("Game", "Friendly Fire", sgOptions.Gameplay.bFriendlyFire);
	setIniInt("Game", "Test Bard", sgOptions.Gameplay.bTestBard);
	setIniInt("Game", "Test Barbarian", sgOptions.Gameplay.bTestBarbarian);
	setIniInt("Game", "Experience Bar", sgOptions.Gameplay.bExperienceBar);
	setIniInt("Game", "Enemy Health Bar", sgOptions.Gameplay.bEnemyHealthBar);
	setIniInt("Game", "Auto Gold Pickup", sgOptions.Gameplay.bAutoGoldPickup);
	setIniInt("Game", "Adria Refills Mana", sgOptions.Gameplay.bAdriaRefillsMana);
	setIniInt("Game", "Auto Equip Weapons", sgOptions.Gameplay.bAutoEquipWeapons);
	setIniInt("Game", "Auto Equip Armor", sgOptions.Gameplay.bAutoEquipArmor);
	setIniInt("Game", "Auto Equip Helms", sgOptions.Gameplay.bAutoEquipHelms);
	setIniInt("Game", "Auto Equip Shields", sgOptions.Gameplay.bAutoEquipShields);
	setIniInt("Game", "Auto Equip Jewelry", sgOptions.Gameplay.bAutoEquipJewelry);
	setIniInt("Game", "Randomize Quests", sgOptions.Gameplay.bRandomizeQuests);
	setIniInt("Game", "Show Monster Type", sgOptions.Gameplay.bShowMonsterType);

	setIniValue("Network", "Bind Address", sgOptions.Network.szBindAddress);
	setIniInt("Network", "Port", sgOptions.Network.nPort);
	setIniValue("Network", "Previous Host", sgOptions.Network.szPreviousHost);

	for (int i = 0; i < sizeof(spszMsgTbl) / sizeof(spszMsgTbl[0]); i++)
		setIniValue("NetMsg", spszMsgHotKeyTbl[i], sgOptions.Chat.szHotKeyMsgs[i]);

	setIniValue("Controller", "Mapping", sgOptions.Controller.szMapping);
	setIniInt("Controller", "Swap Shoulder Button Mode", sgOptions.Controller.bSwapShoulderButtonMode);
	setIniInt("Controller", "Dpad Hotkeys", sgOptions.Controller.bDpadHotkeys);
#ifdef __vita__
	setIniInt("Controller", "Enable Rear Touchpad", sgOptions.Controller.bRearTouch);
#endif

	SaveIni();
}

/**
 * @brief Load game configurations from ini file
 */
static void LoadOptions()
{
	sgOptions.Diablo.bIntro = getIniBool("Diablo", "Intro", true);
	sgOptions.Hellfire.bIntro = getIniBool("Hellfire", "Intro", true);
	getIniValue("Hellfire", "SItem", sgOptions.Hellfire.szItem, sizeof(sgOptions.Hellfire.szItem), "");

	sgOptions.Audio.nSoundVolume = getIniInt("Audio", "Sound Volume", VOLUME_MAX);
	sgOptions.Audio.nMusicVolume = getIniInt("Audio", "Music Volume", VOLUME_MAX);
	sgOptions.Audio.bWalkingSound = getIniBool("Audio", "Walking Sound", true);
	sgOptions.Audio.bAutoEquipSound = getIniBool("Audio", "Auto Equip Sound", false);

#ifndef __vita__
	sgOptions.Graphics.nWidth = getIniInt("Graphics", "Width", DEFAULT_WIDTH);
	sgOptions.Graphics.nHeight = getIniInt("Graphics", "Height", DEFAULT_HEIGHT);
#else
	sgOptions.Graphics.nWidth = DEFAULT_WIDTH;
	sgOptions.Graphics.nHeight = DEFAULT_HEIGHT;
#endif
	sgOptions.Graphics.bFullscreen = getIniBool("Graphics", "Fullscreen", true);
#if !defined(USE_SDL1) && !defined(__vita__)
	sgOptions.Graphics.bUpscale = getIniBool("Graphics", "Upscale", true);
#else
	sgOptions.Graphics.bUpscale = false;
#endif
	sgOptions.Graphics.bFitToScreen = getIniBool("Graphics", "Fit to Screen", true);
	getIniValue("Graphics", "Scaling Quality", sgOptions.Graphics.szScaleQuality, sizeof(sgOptions.Graphics.szScaleQuality), "2");
	sgOptions.Graphics.bIntegerScaling = getIniBool("Graphics", "Integer Scaling", false);
	sgOptions.Graphics.bVSync = getIniBool("Graphics", "Vertical Sync", true);
	sgOptions.Graphics.bBlendedTransparancy = getIniBool("Graphics", "Blended Transparency", true);
	sgOptions.Graphics.nGammaCorrection = getIniInt("Graphics", "Gamma Correction", 100);
	sgOptions.Graphics.bColorCycling = getIniBool("Graphics", "Color Cycling", true);
	sgOptions.Graphics.bFPSLimit = getIniBool("Graphics", "FPS Limiter", true);

	sgOptions.Gameplay.nTickRate = getIniInt("Game", "Speed", 20);
	sgOptions.Gameplay.bRunInTown = getIniBool("Game", "Run in Town", false);
	sgOptions.Gameplay.bGrabInput = getIniBool("Game", "Grab Input", false);
	sgOptions.Gameplay.bTheoQuest = getIniBool("Game", "Theo Quest", false);
	sgOptions.Gameplay.bCowQuest = getIniBool("Game", "Cow Quest", false);
	sgOptions.Gameplay.bFriendlyFire = getIniBool("Game", "Friendly Fire", true);
	sgOptions.Gameplay.bTestBard = getIniBool("Game", "Test Bard", false);
	sgOptions.Gameplay.bTestBarbarian = getIniBool("Game", "Test Barbarian", false);
	sgOptions.Gameplay.bExperienceBar = getIniBool("Game", "Experience Bar", false);
	sgOptions.Gameplay.bEnemyHealthBar = getIniBool("Game", "Enemy Health Bar", false);
	sgOptions.Gameplay.bAutoGoldPickup = getIniBool("Game", "Auto Gold Pickup", false);
	sgOptions.Gameplay.bAdriaRefillsMana = getIniBool("Game", "Adria Refills Mana", false);
	sgOptions.Gameplay.bAutoEquipWeapons = getIniBool("Game", "Auto Equip Weapons", true);
	sgOptions.Gameplay.bAutoEquipArmor = getIniBool("Game", "Auto Equip Armor", false);
	sgOptions.Gameplay.bAutoEquipHelms = getIniBool("Game", "Auto Equip Helms", false);
	sgOptions.Gameplay.bAutoEquipShields = getIniBool("Game", "Auto Equip Shields", false);
	sgOptions.Gameplay.bAutoEquipJewelry = getIniBool("Game", "Auto Equip Jewelry", false);
	sgOptions.Gameplay.bRandomizeQuests = getIniBool("Game", "Randomize Quests", true);
	sgOptions.Gameplay.bShowMonsterType = getIniBool("Game", "Show Monster Type", false);

	getIniValue("Network", "Bind Address", sgOptions.Network.szBindAddress, sizeof(sgOptions.Network.szBindAddress), "0.0.0.0");
	sgOptions.Network.nPort = getIniInt("Network", "Port", 6112);
	getIniValue("Network", "Previous Host", sgOptions.Network.szPreviousHost, sizeof(sgOptions.Network.szPreviousHost), "");

	for (int i = 0; i < sizeof(spszMsgTbl) / sizeof(spszMsgTbl[0]); i++)
		getIniValue("NetMsg", spszMsgHotKeyTbl[i], sgOptions.Chat.szHotKeyMsgs[i], MAX_SEND_STR_LEN, spszMsgTbl[i]);

	getIniValue("Controller", "Mapping", sgOptions.Controller.szMapping, sizeof(sgOptions.Controller.szMapping), "");
	sgOptions.Controller.bSwapShoulderButtonMode = getIniBool("Controller", "Swap Shoulder Button Mode", false);
	sgOptions.Controller.bDpadHotkeys = getIniBool("Controller", "Dpad Hotkeys", false);
#ifdef __vita__
	sgOptions.Controller.bRearTouch = getIniBool("Controller", "Enable Rear Touchpad", true);
#endif

	sbWasOptionsLoaded = true;
}

static void diablo_init_screen()
{
	MouseX = gnScreenWidth / 2;
	MouseY = gnScreenHeight / 2;
	if (!sgbControllerActive)
		SetCursorPos(MouseX, MouseY);
	ScrollInfo._sdx = 0;
	ScrollInfo._sdy = 0;
	ScrollInfo._sxoff = 0;
	ScrollInfo._syoff = 0;
	ScrollInfo._sdir = SDIR_NONE;

	ClrDiabloMsg();
}

static void diablo_init()
{
	init_create_window();
	was_window_init = true;

	SFileEnableDirectAccess(TRUE);
	init_archives();
	was_archives_init = true;

	if (forceSpawn)
		gbIsSpawn = true;
	if (forceDiablo)
		gbIsHellfire = false;

	UiInitialize();
	UiSetSpawned(gbIsSpawn);
	was_ui_init = true;

	ReadOnlyTest();

	InitHash();

	diablo_init_screen();

	snd_init();
	was_snd_init = true;

	ui_sound_init();
}

static void diablo_splash()
{
	if (!gbShowIntro)
		return;

	play_movie("gendata\\logo.smk", TRUE);

	if (gbIsHellfire && sgOptions.Hellfire.bIntro) {
		play_movie("gendata\\Hellfire.smk", TRUE);
		sgOptions.Hellfire.bIntro = false;
	}
	if (!gbIsHellfire && !gbIsSpawn && sgOptions.Diablo.bIntro) {
		play_movie("gendata\\diablo1.smk", TRUE);
		sgOptions.Diablo.bIntro = false;
	}

	UiTitleDialog();
}

static void diablo_deinit()
{
	if (sbWasOptionsLoaded)
		SaveOptions();
	if (was_snd_init) {
		effects_cleanup_sfx();
	}
	if (was_ui_init)
		UiDestroy();
	if (was_archives_init)
		init_cleanup();
	if (was_window_init)
		dx_cleanup(); // Cleanup SDL surfaces stuff, so we have to do it before SDL_Quit().
	if (was_fonts_init)
		FontsCleanup();
	if (SDL_WasInit(SDL_INIT_EVERYTHING & ~SDL_INIT_HAPTIC))
		SDL_Quit();
}

void diablo_quit(int exitStatus)
{
	diablo_deinit();
	exit(exitStatus);
}

int DiabloMain(int argc, char **argv)
{
	diablo_parse_flags(argc, argv);
	LoadOptions();
	diablo_init();
	diablo_splash();
	mainmenu_loop();
	diablo_deinit();

	return 0;
}

static BOOL LeftMouseCmd(BOOL bShift)
{
	BOOL bNear;

	assert(MouseY < PANEL_TOP || MouseX < PANEL_LEFT || MouseX >= PANEL_LEFT + PANEL_WIDTH);

	if (leveltype == DTYPE_TOWN) {
		if (pcursitem != -1 && pcurs == CURSOR_HAND)
			NetSendCmdLocParam1(TRUE, invflag ? CMD_GOTOGETITEM : CMD_GOTOAGETITEM, cursmx, cursmy, pcursitem);
		if (pcursmonst != -1)
			NetSendCmdLocParam1(TRUE, CMD_TALKXY, cursmx, cursmy, pcursmonst);
		if (pcursitem == -1 && pcursmonst == -1 && pcursplr == -1)
			return TRUE;
	} else {
		bNear = abs(plr[myplr]._px - cursmx) < 2 && abs(plr[myplr]._py - cursmy) < 2;
		if (pcursitem != -1 && pcurs == CURSOR_HAND && !bShift) {
			NetSendCmdLocParam1(TRUE, invflag ? CMD_GOTOGETITEM : CMD_GOTOAGETITEM, cursmx, cursmy, pcursitem);
		} else if (pcursobj != -1 && (!bShift || (bNear && object[pcursobj]._oBreak == 1))) {
			NetSendCmdLocParam1(TRUE, pcurs == CURSOR_DISARM ? CMD_DISARMXY : CMD_OPOBJXY, cursmx, cursmy, pcursobj);
		} else if (plr[myplr]._pwtype == WT_RANGED) {
			if (bShift) {
				NetSendCmdLoc(TRUE, CMD_RATTACKXY, cursmx, cursmy);
			} else if (pcursmonst != -1) {
				if (CanTalkToMonst(pcursmonst)) {
					NetSendCmdParam1(TRUE, CMD_ATTACKID, pcursmonst);
				} else {
					NetSendCmdParam1(TRUE, CMD_RATTACKID, pcursmonst);
				}
			} else if (pcursplr != -1 && !gbFriendlyMode) {
				NetSendCmdParam1(TRUE, CMD_RATTACKPID, pcursplr);
			}
		} else {
			if (bShift) {
				if (pcursmonst != -1) {
					if (CanTalkToMonst(pcursmonst)) {
						NetSendCmdParam1(TRUE, CMD_ATTACKID, pcursmonst);
					} else {
						NetSendCmdLoc(TRUE, CMD_SATTACKXY, cursmx, cursmy);
					}
				} else {
					NetSendCmdLoc(TRUE, CMD_SATTACKXY, cursmx, cursmy);
				}
			} else if (pcursmonst != -1) {
				NetSendCmdParam1(TRUE, CMD_ATTACKID, pcursmonst);
			} else if (pcursplr != -1 && !gbFriendlyMode) {
				NetSendCmdParam1(TRUE, CMD_ATTACKPID, pcursplr);
			}
		}
		if (!bShift && pcursitem == -1 && pcursobj == -1 && pcursmonst == -1 && pcursplr == -1)
			return TRUE;
	}

	return FALSE;
}

BOOL TryIconCurs()
{
	if (pcurs == CURSOR_RESURRECT) {
		NetSendCmdParam1(TRUE, CMD_RESURRECT, pcursplr);
		return TRUE;
	}

	if (pcurs == CURSOR_HEALOTHER) {
		NetSendCmdParam1(TRUE, CMD_HEALOTHER, pcursplr);
		return TRUE;
	}

	if (pcurs == CURSOR_TELEKINESIS) {
		DoTelekinesis();
		return TRUE;
	}

	if (pcurs == CURSOR_IDENTIFY) {
		if (pcursinvitem != -1)
			CheckIdentify(myplr, pcursinvitem);
		else
			NewCursor(CURSOR_HAND);
		return TRUE;
	}

	if (pcurs == CURSOR_REPAIR) {
		if (pcursinvitem != -1)
			DoRepair(myplr, pcursinvitem);
		else
			NewCursor(CURSOR_HAND);
		return TRUE;
	}

	if (pcurs == CURSOR_RECHARGE) {
		if (pcursinvitem != -1)
			DoRecharge(myplr, pcursinvitem);
		else
			NewCursor(CURSOR_HAND);
		return TRUE;
	}

	if (pcurs == CURSOR_OIL) {
		if (pcursinvitem != -1)
			DoOil(myplr, pcursinvitem);
		else
			NewCursor(CURSOR_HAND);
		return TRUE;
	}

	if (pcurs == CURSOR_TELEPORT) {
		if (pcursmonst != -1)
			NetSendCmdParam3(TRUE, CMD_TSPELLID, pcursmonst, plr[myplr]._pTSpell, GetSpellLevel(myplr, plr[myplr]._pTSpell));
		else if (pcursplr != -1)
			NetSendCmdParam3(TRUE, CMD_TSPELLPID, pcursplr, plr[myplr]._pTSpell, GetSpellLevel(myplr, plr[myplr]._pTSpell));
		else
			NetSendCmdLocParam2(TRUE, CMD_TSPELLXY, cursmx, cursmy, plr[myplr]._pTSpell, GetSpellLevel(myplr, plr[myplr]._pTSpell));
		NewCursor(CURSOR_HAND);
		return TRUE;
	}

	if (pcurs == CURSOR_DISARM && pcursobj == -1) {
		NewCursor(CURSOR_HAND);
		return TRUE;
	}

	return FALSE;
}

static BOOL LeftMouseDown(int wParam)
{
	if (gmenu_left_mouse(TRUE))
		return FALSE;

	if (control_check_talk_btn())
		return FALSE;

	if (sgnTimeoutCurs != CURSOR_NONE)
		return FALSE;

	if (deathflag) {
		control_check_btn_press();
		return FALSE;
	}

	if (PauseMode == 2) {
		return FALSE;
	}
	if (doomflag) {
		doom_close();
		return FALSE;
	}

	if (spselflag) {
		SetSpell();
		return FALSE;
	}

	if (stextflag != STORE_NONE) {
		CheckStoreBtn();
		return FALSE;
	}

	bool isShiftHeld = wParam & DVL_MK_SHIFT;

	if (MouseY < PANEL_TOP || MouseX < PANEL_LEFT || MouseX >= PANEL_LEFT + PANEL_WIDTH) {
		if (!gmenu_is_active() && !TryIconCurs()) {
			if (questlog && MouseX > 32 && MouseX < 288 && MouseY > 32 && MouseY < 308) {
				QuestlogESC();
			} else if (qtextflag) {
				qtextflag = FALSE;
				stream_stop();
			} else if (chrflag && MouseX < SPANEL_WIDTH && MouseY < SPANEL_HEIGHT) {
				CheckChrBtns();
			} else if (invflag && MouseX > RIGHT_PANEL && MouseY < SPANEL_HEIGHT) {
				if (!dropGoldFlag)
					CheckInvItem(isShiftHeld);
			} else if (sbookflag && MouseX > RIGHT_PANEL && MouseY < SPANEL_HEIGHT) {
				CheckSBook();
			} else if (pcurs >= CURSOR_FIRSTITEM) {
				if (TryInvPut()) {
					NetSendCmdPItem(TRUE, CMD_PUTITEM, cursmx, cursmy);
					NewCursor(CURSOR_HAND);
				}
			} else {
				if (plr[myplr]._pStatPts != 0 && !spselflag)
					CheckLvlBtn();
				if (!lvlbtndown)
					return LeftMouseCmd(isShiftHeld);
			}
		}
	} else {
		if (!talkflag && !dropGoldFlag && !gmenu_is_active())
			CheckInvScrn(isShiftHeld);
		DoPanBtn();
		if (pcurs > CURSOR_HAND && pcurs < CURSOR_FIRSTITEM)
			NewCursor(CURSOR_HAND);
	}

	return FALSE;
}

static void LeftMouseUp(int wParam)
{
	gmenu_left_mouse(FALSE);
	control_release_talk_btn();
	bool isShiftHeld = wParam & (DVL_MK_SHIFT | DVL_MK_LBUTTON);
	if (panbtndown)
		CheckBtnUp();
	if (chrbtnactive)
		ReleaseChrBtns(isShiftHeld);
	if (lvlbtndown)
		ReleaseLvlBtn();
	if (stextflag != STORE_NONE)
		ReleaseStoreBtn();
}

static void RightMouseDown()
{
	if (!gmenu_is_active() && sgnTimeoutCurs == CURSOR_NONE && PauseMode != 2 && !plr[myplr]._pInvincible) {
		if (doomflag) {
			doom_close();
		} else if (stextflag == STORE_NONE) {
			if (spselflag) {
				SetSpell();
			} else if (MouseY >= SPANEL_HEIGHT
			    || (!sbookflag || MouseX <= RIGHT_PANEL)
			        && !TryIconCurs()
			        && (pcursinvitem == -1 || !UseInvItem(myplr, pcursinvitem))) {
				if (pcurs == CURSOR_HAND) {
					if (pcursinvitem == -1 || !UseInvItem(myplr, pcursinvitem))
						CheckPlrSpell();
				} else if (pcurs > CURSOR_HAND && pcurs < CURSOR_FIRSTITEM) {
					NewCursor(CURSOR_HAND);
				}
			}
		}
	}
}

void diablo_pause_game()
{
	if (!gbIsMultiplayer) {
		if (PauseMode) {
			PauseMode = 0;
		} else {
			PauseMode = 2;
			sound_stop();
			track_repeat_walk(FALSE);
		}
		force_redraw = 255;
	}
}

static void diablo_hotkey_msg(DWORD dwMsg)
{
	if (!gbIsMultiplayer) {
		return;
	}

	assert(dwMsg < sizeof(spszMsgTbl) / sizeof(spszMsgTbl[0]));

	NetSendCmdString(-1, sgOptions.Chat.szHotKeyMsgs[dwMsg]);
}

static BOOL PressSysKey(int wParam)
{
	if (gmenu_is_active() || wParam != DVL_VK_F10)
		return FALSE;
	diablo_hotkey_msg(1);
	return TRUE;
}

static void ReleaseKey(int vkey)
{
	if (vkey == DVL_VK_SNAPSHOT)
		CaptureScreen();
}

static void ClosePanels()
{
	if (PANELS_COVER) {
		if (!chrflag && !questlog && (invflag || sbookflag) && MouseX < 480 && MouseY < PANEL_TOP) {
			SetCursorPos(MouseX + 160, MouseY);
		} else if (!invflag && !sbookflag && (chrflag || questlog) && MouseX > 160 && MouseY < PANEL_TOP) {
			SetCursorPos(MouseX - 160, MouseY);
		}
	}
	invflag = FALSE;
	chrflag = FALSE;
	sbookflag = FALSE;
	questlog = FALSE;
}

bool PressEscKey()
{
	bool rv = false;

	if (doomflag) {
		doom_close();
		rv = true;
	}

	if (helpflag) {
		helpflag = FALSE;
		rv = true;
	}

	if (qtextflag) {
		qtextflag = FALSE;
		stream_stop();
		rv = true;
	}

	if (stextflag) {
		STextESC();
		rv = true;
	}

	if (msgflag) {
		msgdelay = 0;
		rv = true;
	}

	if (talkflag) {
		control_reset_talk();
		rv = true;
	}

	if (dropGoldFlag) {
		control_drop_gold(DVL_VK_ESCAPE);
		rv = true;
	}

	if (spselflag) {
		spselflag = FALSE;
		rv = true;
	}

	if (invflag || chrflag || sbookflag || questlog) {
		ClosePanels();
		rv = true;
	}

	return rv;
}

static void PressKey(int vkey)
{
	if (gmenu_presskeys(vkey) || control_presskeys(vkey)) {
		return;
	}

	if (deathflag) {
		if (sgnTimeoutCurs != CURSOR_NONE) {
			return;
		}
		if (vkey == DVL_VK_F9) {
			diablo_hotkey_msg(0);
		}
		if (vkey == DVL_VK_F10) {
			diablo_hotkey_msg(1);
		}
		if (vkey == DVL_VK_F11) {
			diablo_hotkey_msg(2);
		}
		if (vkey == DVL_VK_F12) {
			diablo_hotkey_msg(3);
		}
		if (vkey == DVL_VK_RETURN) {
			if (GetAsyncKeyState(DVL_VK_MENU) & 0x8000)
				dx_reinit();
			else
				control_type_message();
		}
		if (vkey != DVL_VK_ESCAPE) {
			return;
		}
	}
	if (vkey == DVL_VK_ESCAPE) {
		if (!PressEscKey()) {
			track_repeat_walk(FALSE);
			gamemenu_on();
		}
		return;
	}

	if (sgnTimeoutCurs != CURSOR_NONE || dropGoldFlag) {
		return;
	}
	if (vkey == DVL_VK_PAUSE) {
		diablo_pause_game();
		return;
	}
	if (PauseMode == 2) {
		if ((vkey == DVL_VK_RETURN) && (GetAsyncKeyState(DVL_VK_MENU) & 0x8000))
			dx_reinit();
		return;
	}

	if (vkey == DVL_VK_RETURN) {
		if (GetAsyncKeyState(DVL_VK_MENU) & 0x8000) {
			dx_reinit();
		} else if (stextflag) {
			STextEnter();
		} else if (questlog) {
			QuestlogEnter();
		} else {
			control_type_message();
		}
	} else if (vkey == DVL_VK_F1) {
		if (helpflag) {
			helpflag = FALSE;
		} else if (stextflag != STORE_NONE) {
			ClearPanel();
			AddPanelString("No help available", TRUE); /// BUGFIX: message isn't displayed
			AddPanelString("while in stores", TRUE);
			track_repeat_walk(FALSE);
		} else {
			invflag = FALSE;
			chrflag = FALSE;
			sbookflag = FALSE;
			spselflag = FALSE;
			if (qtextflag && leveltype == DTYPE_TOWN) {
				qtextflag = FALSE;
				stream_stop();
			}
			questlog = FALSE;
			automapflag = FALSE;
			msgdelay = 0;
			gamemenu_off();
			DisplayHelp();
			doom_close();
		}
	}
#ifdef _DEBUG
	else if (vkey == DVL_VK_F2) {
	}
#endif
#ifdef _DEBUG
	else if (vkey == DVL_VK_F3) {
		if (pcursitem != -1) {
			sprintf(
			    tempstr,
			    "IDX = %i  :  Seed = %i  :  CF = %i",
			    items[pcursitem].IDidx,
			    items[pcursitem]._iSeed,
			    items[pcursitem]._iCreateInfo);
			NetSendCmdString(1 << myplr, tempstr);
		}
		sprintf(tempstr, "Numitems : %i", numitems);
		NetSendCmdString(1 << myplr, tempstr);
	}
#endif
#ifdef _DEBUG
	else if (vkey == DVL_VK_F4) {
		PrintDebugQuest();
	}
#endif
	else if (vkey == DVL_VK_F5) {
		if (spselflag) {
			SetSpeedSpell(0);
			return;
		}
		ToggleSpell(0);
		return;
	} else if (vkey == DVL_VK_F6) {
		if (spselflag) {
			SetSpeedSpell(1);
			return;
		}
		ToggleSpell(1);
		return;
	} else if (vkey == DVL_VK_F7) {
		if (spselflag) {
			SetSpeedSpell(2);
			return;
		}
		ToggleSpell(2);
		return;
	} else if (vkey == DVL_VK_F8) {
		if (spselflag) {
			SetSpeedSpell(3);
			return;
		}
		ToggleSpell(3);
		return;
	} else if (vkey == DVL_VK_F9) {
		diablo_hotkey_msg(0);
	} else if (vkey == DVL_VK_F10) {
		diablo_hotkey_msg(1);
	} else if (vkey == DVL_VK_F11) {
		diablo_hotkey_msg(2);
	} else if (vkey == DVL_VK_F12) {
		diablo_hotkey_msg(3);
	} else if (vkey == DVL_VK_UP) {
		if (stextflag) {
			STextUp();
		} else if (questlog) {
			QuestlogUp();
		} else if (helpflag) {
			HelpScrollUp();
		} else if (automapflag) {
			AutomapUp();
		}
	} else if (vkey == DVL_VK_DOWN) {
		if (stextflag) {
			STextDown();
		} else if (questlog) {
			QuestlogDown();
		} else if (helpflag) {
			HelpScrollDown();
		} else if (automapflag) {
			AutomapDown();
		}
	} else if (vkey == DVL_VK_PRIOR) {
		if (stextflag) {
			STextPrior();
		}
	} else if (vkey == DVL_VK_NEXT) {
		if (stextflag) {
			STextNext();
		}
	} else if (vkey == DVL_VK_LEFT) {
		if (automapflag && !talkflag) {
			AutomapLeft();
		}
	} else if (vkey == DVL_VK_RIGHT) {
		if (automapflag && !talkflag) {
			AutomapRight();
		}
	} else if (vkey == DVL_VK_TAB) {
		DoAutoMap();
	} else if (vkey == DVL_VK_SPACE) {
		ClosePanels();
		helpflag = FALSE;
		spselflag = FALSE;
		if (qtextflag && leveltype == DTYPE_TOWN) {
			qtextflag = FALSE;
			stream_stop();
		}
		automapflag = FALSE;
		msgdelay = 0;
		gamemenu_off();
		doom_close();
	}
}

/**
 * @internal `return` must be used instead of `break` to be bin exact as C++
 */
static void PressChar(WPARAM vkey)
{
	if (gmenu_is_active() || control_talk_last_key(vkey) || sgnTimeoutCurs != CURSOR_NONE || deathflag) {
		return;
	}
	if ((char)vkey == 'p' || (char)vkey == 'P') {
		diablo_pause_game();
		return;
	}
	if (PauseMode == 2) {
		return;
	}
	if (doomflag) {
		doom_close();
		return;
	}
	if (dropGoldFlag) {
		control_drop_gold(vkey);
		return;
	}

	switch (vkey) {
	case 'G':
	case 'g':
		DecreaseGamma();
		return;
	case 'F':
	case 'f':
		IncreaseGamma();
		return;
	case 'I':
	case 'i':
		if (stextflag == STORE_NONE) {
			invflag = !invflag;
			if (!chrflag && !questlog && PANELS_COVER) {
				if (!invflag) { // We closed the invetory
					if (MouseX < 480 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX + 160, MouseY);
					}
				} else if (!sbookflag) { // We opened the invetory
					if (MouseX > 160 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX - 160, MouseY);
					}
				}
			}
			sbookflag = FALSE;
		}
		return;
	case 'C':
	case 'c':
		if (stextflag == STORE_NONE) {
			chrflag = !chrflag;
			if (!invflag && !sbookflag && PANELS_COVER) {
				if (!chrflag) { // We closed the character sheet
					if (MouseX > 160 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX - 160, MouseY);
					}
				} else if (!questlog) { // We opened the character sheet
					if (MouseX < 480 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX + 160, MouseY);
					}
				}
			}
			questlog = FALSE;
		}
		return;
	case 'Q':
	case 'q':
		if (stextflag == STORE_NONE) {
			if (!questlog) {
				StartQuestlog();
			} else {
				questlog = FALSE;
			}
			if (!invflag && !sbookflag && PANELS_COVER) {
				if (!questlog) { // We closed the quest log
					if (MouseX > 160 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX - 160, MouseY);
					}
				} else if (!chrflag) { // We opened the character quest log
					if (MouseX < 480 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX + 160, MouseY);
					}
				}
			}
			chrflag = FALSE;
		}
		return;
	case 'Z':
	case 'z':
		zoomflag = !zoomflag;
		CalcViewportGeometry();
		return;
	case 'S':
	case 's':
		if (stextflag == STORE_NONE) {
			chrflag = FALSE;
			questlog = FALSE;
			invflag = FALSE;
			sbookflag = FALSE;
			if (!spselflag) {
				DoSpeedBook();
			} else {
				spselflag = FALSE;
			}
			track_repeat_walk(FALSE);
		}
		return;
	case 'B':
	case 'b':
		if (stextflag == STORE_NONE) {
			sbookflag = !sbookflag;
			if (!chrflag && !questlog && PANELS_COVER) {
				if (!sbookflag) { // We closed the invetory
					if (MouseX < 480 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX + 160, MouseY);
					}
				} else if (!invflag) { // We opened the invetory
					if (MouseX > 160 && MouseY < PANEL_TOP) {
						SetCursorPos(MouseX - 160, MouseY);
					}
				}
			}
			invflag = FALSE;
		}
		return;
	case '+':
	case '=':
		if (automapflag) {
			AutomapZoomIn();
		}
		return;
	case '-':
	case '_':
		if (automapflag) {
			AutomapZoomOut();
		}
		return;
	case 'v': {
		char pszStr[120];
		const char *difficulties[3] = {
			"Normal",
			"Nightmare",
			"Hell",
		};
		sprintf(pszStr, "%s, mode = %s", gszProductName, difficulties[gnDifficulty]);
		NetSendCmdString(1 << myplr, pszStr);
		return;
	}
	case 'V':
		NetSendCmdString(1 << myplr, gszVersionNumber);
		return;
	case '!':
	case '1':
		if (!plr[myplr].SpdList[0].isEmpty() && plr[myplr].SpdList[0]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST);
		}
		return;
	case '@':
	case '2':
		if (!plr[myplr].SpdList[1].isEmpty() && plr[myplr].SpdList[1]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 1);
		}
		return;
	case '#':
	case '3':
		if (!plr[myplr].SpdList[2].isEmpty() && plr[myplr].SpdList[2]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 2);
		}
		return;
	case '$':
	case '4':
		if (!plr[myplr].SpdList[3].isEmpty() && plr[myplr].SpdList[3]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 3);
		}
		return;
	case '%':
	case '5':
		if (!plr[myplr].SpdList[4].isEmpty() && plr[myplr].SpdList[4]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 4);
		}
		return;
	case '^':
	case '6':
		if (!plr[myplr].SpdList[5].isEmpty() && plr[myplr].SpdList[5]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 5);
		}
		return;
	case '&':
	case '7':
		if (!plr[myplr].SpdList[6].isEmpty() && plr[myplr].SpdList[6]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 6);
		}
		return;
	case '*':
	case '8':
#ifdef _DEBUG
		if (debug_mode_key_inverted_v || debug_mode_key_w) {
			NetSendCmd(TRUE, CMD_CHEAT_EXPERIENCE);
			return;
		}
#endif
		if (!plr[myplr].SpdList[7].isEmpty() && plr[myplr].SpdList[7]._itype != ITYPE_GOLD) {
			UseInvItem(myplr, INVITEM_BELT_FIRST + 7);
		}
		return;
#ifdef _DEBUG
	case ')':
	case '0':
		if (debug_mode_key_inverted_v) {
			if (arrowdebug > 2) {
				arrowdebug = 0;
			}
			if (arrowdebug == 0) {
				plr[myplr]._pIFlags &= ~ISPL_FIRE_ARROWS;
				plr[myplr]._pIFlags &= ~ISPL_LIGHT_ARROWS;
			}
			if (arrowdebug == 1) {
				plr[myplr]._pIFlags |= ISPL_FIRE_ARROWS;
			}
			if (arrowdebug == 2) {
				plr[myplr]._pIFlags |= ISPL_LIGHT_ARROWS;
			}
			arrowdebug++;
		}
		return;
	case ':':
		if (currlevel == 0 && debug_mode_key_w) {
			SetAllSpellsCheat();
		}
		return;
	case '[':
		if (currlevel == 0 && debug_mode_key_w) {
			TakeGoldCheat();
		}
		return;
	case ']':
		if (currlevel == 0 && debug_mode_key_w) {
			MaxSpellsCheat();
		}
		return;
	case 'a':
		if (debug_mode_key_inverted_v) {
			spelldata[SPL_TELEPORT].sTownSpell = 1;
			plr[myplr]._pSplLvl[plr[myplr]._pSpell]++;
		}
		return;
	case 'D':
		PrintDebugPlayer(TRUE);
		return;
	case 'd':
		PrintDebugPlayer(FALSE);
		return;
	case 'L':
	case 'l':
		if (debug_mode_key_inverted_v) {
			ToggleLighting();
		}
		return;
	case 'M':
		NextDebugMonster();
		return;
	case 'm':
		GetDebugMonster();
		return;
	case 'R':
	case 'r':
		sprintf(tempstr, "seed = %i", glSeedTbl[currlevel]);
		NetSendCmdString(1 << myplr, tempstr);
		sprintf(tempstr, "Mid1 = %i : Mid2 = %i : Mid3 = %i", glMid1Seed[currlevel], glMid2Seed[currlevel], glMid3Seed[currlevel]);
		NetSendCmdString(1 << myplr, tempstr);
		sprintf(tempstr, "End = %i", glEndSeed[currlevel]);
		NetSendCmdString(1 << myplr, tempstr);
		return;
	case 'T':
	case 't':
		if (debug_mode_key_inverted_v) {
			sprintf(tempstr, "PX = %i  PY = %i", plr[myplr]._px, plr[myplr]._py);
			NetSendCmdString(1 << myplr, tempstr);
			sprintf(tempstr, "CX = %i  CY = %i  DP = %i", cursmx, cursmy, dungeon[cursmx][cursmy]);
			NetSendCmdString(1 << myplr, tempstr);
		}
		return;
	case '|':
		if (currlevel == 0 && debug_mode_key_w) {
			GiveGoldCheat();
		}
		return;
#endif
	}
}

static void GetMousePos(LPARAM lParam)
{
	MouseX = (short)(lParam & 0xffff);
	MouseY = (short)((lParam >> 16) & 0xffff);
}

void DisableInputWndProc(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {
	case DVL_WM_KEYDOWN:
	case DVL_WM_KEYUP:
	case DVL_WM_CHAR:
	case DVL_WM_SYSKEYDOWN:
	case DVL_WM_SYSCOMMAND:
		return;
	case DVL_WM_MOUSEMOVE:
		GetMousePos(lParam);
		return;
	case DVL_WM_LBUTTONDOWN:
		if (sgbMouseDown != CLICK_NONE)
			return;
		sgbMouseDown = CLICK_LEFT;
		return;
	case DVL_WM_LBUTTONUP:
		if (sgbMouseDown != CLICK_LEFT)
			return;
		sgbMouseDown = CLICK_NONE;
		return;
	case DVL_WM_RBUTTONDOWN:
		if (sgbMouseDown != CLICK_NONE)
			return;
		sgbMouseDown = CLICK_RIGHT;
		return;
	case DVL_WM_RBUTTONUP:
		if (sgbMouseDown != CLICK_RIGHT)
			return;
		sgbMouseDown = CLICK_NONE;
		return;
	case DVL_WM_CAPTURECHANGED:
		sgbMouseDown = CLICK_NONE;
		return;
	}

	MainWndProc(uMsg, wParam, lParam);
}

void GM_Game(UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {
	case DVL_WM_KEYDOWN:
		PressKey(wParam);
		return;
	case DVL_WM_KEYUP:
		ReleaseKey(wParam);
		return;
	case DVL_WM_CHAR:
		PressChar(wParam);
		return;
	case DVL_WM_SYSKEYDOWN:
		if (PressSysKey(wParam))
			return;
		break;
	case DVL_WM_SYSCOMMAND:
		if (wParam == DVL_SC_CLOSE) {
			gbRunGame = FALSE;
			gbRunGameResult = FALSE;
			return;
		}
		break;
	case DVL_WM_MOUSEMOVE:
		GetMousePos(lParam);
		gmenu_on_mouse_move();
		return;
	case DVL_WM_LBUTTONDOWN:
		GetMousePos(lParam);
		if (sgbMouseDown == CLICK_NONE) {
			sgbMouseDown = CLICK_LEFT;
			track_repeat_walk(LeftMouseDown(wParam));
		}
		return;
	case DVL_WM_LBUTTONUP:
		GetMousePos(lParam);
		if (sgbMouseDown == CLICK_LEFT) {
			sgbMouseDown = CLICK_NONE;
			LeftMouseUp(wParam);
			track_repeat_walk(FALSE);
		}
		return;
	case DVL_WM_RBUTTONDOWN:
		GetMousePos(lParam);
		if (sgbMouseDown == CLICK_NONE) {
			sgbMouseDown = CLICK_RIGHT;
			RightMouseDown();
		}
		return;
	case DVL_WM_RBUTTONUP:
		GetMousePos(lParam);
		if (sgbMouseDown == CLICK_RIGHT) {
			sgbMouseDown = CLICK_NONE;
		}
		return;
	case DVL_WM_CAPTURECHANGED:
		sgbMouseDown = CLICK_NONE;
		track_repeat_walk(FALSE);
		break;
	case WM_DIABNEXTLVL:
	case WM_DIABPREVLVL:
	case WM_DIABRTNLVL:
	case WM_DIABSETLVL:
	case WM_DIABWARPLVL:
	case WM_DIABTOWNWARP:
	case WM_DIABTWARPUP:
	case WM_DIABRETOWN:
		if (gbIsMultiplayer)
			pfile_write_hero();
		nthread_ignore_mutex(TRUE);
		PaletteFadeOut(8);
		sound_stop();
		music_stop();
		track_repeat_walk(FALSE);
		sgbMouseDown = CLICK_NONE;
		ShowProgress((interface_mode)uMsg);
		force_redraw = 255;
		DrawAndBlit();
		LoadPWaterPalette();
		if (gbRunGame)
			PaletteFadeIn(8);
		nthread_ignore_mutex(FALSE);
		gbGameLoopStartup = TRUE;
		return;
	}

	MainWndProc(uMsg, wParam, lParam);
}

void LoadLvlGFX()
{
	assert(!pDungeonCels);

	switch (leveltype) {
	case DTYPE_TOWN:
		if (gbIsHellfire) {
			pDungeonCels = LoadFileInMem("NLevels\\TownData\\Town.CEL", NULL);
			pMegaTiles = LoadFileInMem("NLevels\\TownData\\Town.TIL", NULL);
			pLevelPieces = LoadFileInMem("NLevels\\TownData\\Town.MIN", NULL);
		} else {
			pDungeonCels = LoadFileInMem("Levels\\TownData\\Town.CEL", NULL);
			pMegaTiles = LoadFileInMem("Levels\\TownData\\Town.TIL", NULL);
			pLevelPieces = LoadFileInMem("Levels\\TownData\\Town.MIN", NULL);
		}
		pSpecialCels = LoadFileInMem("Levels\\TownData\\TownS.CEL", NULL);
		break;
	case DTYPE_CATHEDRAL:
		if (currlevel < 21) {
			pDungeonCels = LoadFileInMem("Levels\\L1Data\\L1.CEL", NULL);
			pMegaTiles = LoadFileInMem("Levels\\L1Data\\L1.TIL", NULL);
			pLevelPieces = LoadFileInMem("Levels\\L1Data\\L1.MIN", NULL);
			pSpecialCels = LoadFileInMem("Levels\\L1Data\\L1S.CEL", NULL);
		} else {
			pDungeonCels = LoadFileInMem("NLevels\\L5Data\\L5.CEL", NULL);
			pMegaTiles = LoadFileInMem("NLevels\\L5Data\\L5.TIL", NULL);
			pLevelPieces = LoadFileInMem("NLevels\\L5Data\\L5.MIN", NULL);
			pSpecialCels = LoadFileInMem("NLevels\\L5Data\\L5S.CEL", NULL);
		}
		break;
	case DTYPE_CATACOMBS:
		pDungeonCels = LoadFileInMem("Levels\\L2Data\\L2.CEL", NULL);
		pMegaTiles = LoadFileInMem("Levels\\L2Data\\L2.TIL", NULL);
		pLevelPieces = LoadFileInMem("Levels\\L2Data\\L2.MIN", NULL);
		pSpecialCels = LoadFileInMem("Levels\\L2Data\\L2S.CEL", NULL);
		break;
	case DTYPE_CAVES:
		if (currlevel < 17) {
			pDungeonCels = LoadFileInMem("Levels\\L3Data\\L3.CEL", NULL);
			pMegaTiles = LoadFileInMem("Levels\\L3Data\\L3.TIL", NULL);
			pLevelPieces = LoadFileInMem("Levels\\L3Data\\L3.MIN", NULL);
		} else {
			pDungeonCels = LoadFileInMem("NLevels\\L6Data\\L6.CEL", NULL);
			pMegaTiles = LoadFileInMem("NLevels\\L6Data\\L6.TIL", NULL);
			pLevelPieces = LoadFileInMem("NLevels\\L6Data\\L6.MIN", NULL);
		}
		pSpecialCels = LoadFileInMem("Levels\\L1Data\\L1S.CEL", NULL);
		break;
	case DTYPE_HELL:
		pDungeonCels = LoadFileInMem("Levels\\L4Data\\L4.CEL", NULL);
		pMegaTiles = LoadFileInMem("Levels\\L4Data\\L4.TIL", NULL);
		pLevelPieces = LoadFileInMem("Levels\\L4Data\\L4.MIN", NULL);
		pSpecialCels = LoadFileInMem("Levels\\L2Data\\L2S.CEL", NULL);
		break;
	default:
		app_fatal("LoadLvlGFX");
	}
}

void LoadAllGFX()
{
	IncProgress();
	IncProgress();
	InitObjectGFX();
	IncProgress();
	InitMissileGFX();
	IncProgress();
}

/**
 * @param lvldir method of entry
 */
void CreateLevel(int lvldir)
{
	switch (leveltype) {
	case DTYPE_TOWN:
		CreateTown(lvldir);
		InitTownTriggers();
		LoadRndLvlPal(0);
		break;
	case DTYPE_CATHEDRAL:
		CreateL5Dungeon(glSeedTbl[currlevel], lvldir);
		InitL1Triggers();
		Freeupstairs();
		if (currlevel < 21) {
			LoadRndLvlPal(1);
		} else {
			LoadRndLvlPal(5);
		}
		break;
	case DTYPE_CATACOMBS:
		CreateL2Dungeon(glSeedTbl[currlevel], lvldir);
		InitL2Triggers();
		Freeupstairs();
		LoadRndLvlPal(2);
		break;
	case DTYPE_CAVES:
		CreateL3Dungeon(glSeedTbl[currlevel], lvldir);
		InitL3Triggers();
		Freeupstairs();
		if (currlevel < 17) {
			LoadRndLvlPal(3);
		} else {
			LoadRndLvlPal(6);
		}
		break;
	case DTYPE_HELL:
		CreateL4Dungeon(glSeedTbl[currlevel], lvldir);
		InitL4Triggers();
		Freeupstairs();
		LoadRndLvlPal(4);
		break;
	default:
		app_fatal("CreateLevel");
	}
}

static void UpdateMonsterLights()
{
	for (int i = 0; i < nummonsters; i++) {
		MonsterStruct *mon = &monster[monstactive[i]];
		if (mon->mlid != NO_LIGHT) {
			if (mon->mlid == plr[myplr]._plid) { // Fix old saves where some monsters had 0 instead of NO_LIGHT
				mon->mlid = NO_LIGHT;
				continue;
			}

			LightListStruct *lid = &LightList[mon->mlid];
			if (mon->_mx != lid->_lx || mon->_my != lid->_ly) {
				ChangeLightXY(mon->mlid, mon->_mx, mon->_my);
			}
		}
	}
}

void LoadGameLevel(BOOL firstflag, int lvldir)
{
	int i, j;
	BOOL visited;

	if (setseed)
		glSeedTbl[currlevel] = setseed;

	music_stop();
	if (pcurs > CURSOR_HAND && pcurs < CURSOR_FIRSTITEM) {
		NewCursor(CURSOR_HAND);
	}
	SetRndSeed(glSeedTbl[currlevel]);
	IncProgress();
	MakeLightTable();
	LoadLvlGFX();
	IncProgress();

	if (firstflag) {
		InitInv();
		InitItemGFX();
		InitQuestText();

		int players = gbIsMultiplayer ? MAX_PLRS : 1;
		for (i = 0; i < players; i++)
			InitPlrGFXMem(i);

		InitStores();
		InitAutomapOnce();
		InitHelp();
	}

	SetRndSeed(glSeedTbl[currlevel]);

	if (leveltype == DTYPE_TOWN)
		SetupTownStores();

	IncProgress();
	InitAutomap();

	if (leveltype != DTYPE_TOWN && lvldir != ENTRY_LOAD) {
		InitLighting();
		InitVision();
	}

	InitLevelMonsters();
	IncProgress();

	if (!setlevel) {
		CreateLevel(lvldir);
		IncProgress();
		FillSolidBlockTbls();
		SetRndSeed(glSeedTbl[currlevel]);

		if (leveltype != DTYPE_TOWN) {
			GetLevelMTypes();
			InitThemes();
			LoadAllGFX();
		} else {
			IncProgress();
			IncProgress();
			InitMissileGFX();
			IncProgress();
			IncProgress();
		}

		IncProgress();

		if (lvldir == ENTRY_RTNLVL)
			GetReturnLvlPos();
		if (lvldir == ENTRY_WARPLVL)
			GetPortalLvlPos();

		IncProgress();

		for (i = 0; i < MAX_PLRS; i++) {
			if (plr[i].plractive && currlevel == plr[i].plrlevel) {
				InitPlayerGFX(i);
				if (lvldir != ENTRY_LOAD)
					InitPlayer(i, firstflag);
			}
		}

		PlayDungMsgs();
		InitMultiView();
		IncProgress();

		visited = FALSE;
		int players = gbIsMultiplayer ? MAX_PLRS : 1;
		for (i = 0; i < players; i++) {
			if (plr[i].plractive)
				visited = visited || plr[i]._pLvlVisited[currlevel];
		}

		SetRndSeed(glSeedTbl[currlevel]);

		if (leveltype != DTYPE_TOWN) {
			if (firstflag || lvldir == ENTRY_LOAD || !plr[myplr]._pLvlVisited[currlevel] || gbIsMultiplayer) {
				HoldThemeRooms();
				glMid1Seed[currlevel] = GetRndSeed();
				InitMonsters();
				glMid2Seed[currlevel] = GetRndSeed();
				IncProgress();
				InitObjects();
				InitItems();
				if (currlevel < 17)
					CreateThemeRooms();
				IncProgress();
				glMid3Seed[currlevel] = GetRndSeed();
				InitMissiles();
				InitDead();
				glEndSeed[currlevel] = GetRndSeed();

				if (gbIsMultiplayer)
					DeltaLoadLevel();

				IncProgress();
				SavePreLighting();
			} else {
				HoldThemeRooms();
				InitMonsters();
				InitMissiles();
				InitDead();
				IncProgress();
				LoadLevel();
				IncProgress();
			}
		} else {
			for (i = 0; i < MAXDUNX; i++) {
				for (j = 0; j < MAXDUNY; j++)
					dFlags[i][j] |= BFLAG_LIT;
			}

			InitTowners();
			InitItems();
			InitMissiles();
			IncProgress();

			if (!firstflag && lvldir != ENTRY_LOAD && plr[myplr]._pLvlVisited[currlevel] && !gbIsMultiplayer)
				LoadLevel();
			if (gbIsMultiplayer)
				DeltaLoadLevel();

			IncProgress();
		}
		if (!gbIsMultiplayer)
			ResyncQuests();
		else
			ResyncMPQuests();
	} else {
		LoadSetMap();
		IncProgress();
		GetLevelMTypes();
		IncProgress();
		InitMonsters();
		IncProgress();
		InitMissileGFX();
		IncProgress();
		InitDead();
		IncProgress();
		FillSolidBlockTbls();
		IncProgress();

		if (lvldir == ENTRY_WARPLVL)
			GetPortalLvlPos();
		IncProgress();

		for (i = 0; i < MAX_PLRS; i++) {
			if (plr[i].plractive && currlevel == plr[i].plrlevel) {
				InitPlayerGFX(i);
				if (lvldir != ENTRY_LOAD)
					InitPlayer(i, firstflag);
			}
		}
		IncProgress();

		InitMultiView();
		IncProgress();

		if (firstflag || lvldir == ENTRY_LOAD || !plr[myplr]._pSLvlVisited[setlvlnum]) {
			InitItems();
			SavePreLighting();
		} else {
			LoadLevel();
		}

		InitMissiles();
		IncProgress();
	}

	SyncPortals();

	for (i = 0; i < MAX_PLRS; i++) {
		if (plr[i].plractive && plr[i].plrlevel == currlevel && (!plr[i]._pLvlChanging || i == myplr)) {
			if (plr[i]._pHitPoints > 0) {
				if (!gbIsMultiplayer)
					dPlayer[plr[i]._px][plr[i]._py] = i + 1;
				else
					SyncInitPlrPos(i);
			} else {
				dFlags[plr[i]._px][plr[i]._py] |= BFLAG_DEAD_PLAYER;
			}
		}
	}

	SetDungeonMicros();

	InitLightMax();
	IncProgress();
	IncProgress();

	if (firstflag) {
		InitControlPan();
	}
	IncProgress();
	UpdateMonsterLights();
	if (leveltype != DTYPE_TOWN) {
		ProcessLightList();
		ProcessVisionList();
	}

	if (currlevel >= 21) {
		if (currlevel == 21) {
			items_427ABA(CornerStone.x, CornerStone.y);
		}
		if (quests[Q_NAKRUL]._qactive == QUEST_DONE && currlevel == 24) {
			objects_454BA8();
		}
	}

	if (currlevel >= 17)
		music_start(currlevel > 20 ? TMUSIC_L5 : TMUSIC_L6);
	else
		music_start(leveltype);

	while (!IncProgress())
		;

	if (!gbIsSpawn && setlevel && setlvlnum == SL_SKELKING && quests[Q_SKELKING]._qactive == QUEST_ACTIVE)
		PlaySFX(USFX_SKING1);
}

static void game_logic()
{
	if (!ProcessInput()) {
		return;
	}
	if (gbProcessPlayers) {
		ProcessPlayers();
	}
	if (leveltype != DTYPE_TOWN) {
		ProcessMonsters();
		ProcessObjects();
		ProcessMissiles();
		ProcessItems();
		ProcessLightList();
		ProcessVisionList();
	} else {
		ProcessTowners();
		ProcessItems();
		ProcessMissiles();
	}

#ifdef _DEBUG
	if (debug_mode_key_inverted_v && GetAsyncKeyState(DVL_VK_SHIFT) & 0x8000) {
		ScrollView();
	}
#endif

	sound_update();
	ClearPlrMsg();
	CheckTriggers();
	CheckQuests();
	force_redraw |= 1;
	pfile_update(false);

	plrctrls_after_game_logic();
}

static void timeout_cursor(BOOL bTimeout)
{
	if (bTimeout) {
		if (sgnTimeoutCurs == CURSOR_NONE && sgbMouseDown == CLICK_NONE) {
			sgnTimeoutCurs = pcurs;
			multi_net_ping();
			ClearPanel();
			AddPanelString("-- Network timeout --", TRUE);
			AddPanelString("-- Waiting for players --", TRUE);
			NewCursor(CURSOR_HOURGLASS);
			force_redraw = 255;
		}
		scrollrt_draw_game_screen(TRUE);
	} else if (sgnTimeoutCurs != CURSOR_NONE) {
		NewCursor(sgnTimeoutCurs);
		sgnTimeoutCurs = CURSOR_NONE;
		ClearPanel();
		force_redraw = 255;
	}
}

/**
 * @param bStartup Process additional ticks before returning
 */
void game_loop(BOOL bStartup)
{
	int i;

	i = bStartup ? gnTickRate * 3 : 3;

	while (i--) {
		if (!multi_handle_delta()) {
			timeout_cursor(TRUE);
			break;
		} else {
			timeout_cursor(FALSE);
			game_logic();
		}
		if (!gbRunGame || !gbIsMultiplayer || !nthread_has_500ms_passed())
			break;
	}
}

void diablo_color_cyc_logic()
{
	if (!sgOptions.Graphics.bColorCycling)
		return;

	if (leveltype == DTYPE_HELL) {
		lighting_color_cycling();
	} else if (currlevel >= 21) {
		palette_update_crypt();
	} else if (currlevel >= 17) {
		palette_update_hive();
	} else if (leveltype == DTYPE_CAVES) {
		palette_update_caves();
	}
}

DEVILUTION_END_NAMESPACE