cmdline.cpp

/*
 * Copyright (C) Volition, Inc. 1999.  All rights reserved.
 *
 * All source code herein is the property of Volition, Inc. You may not sell 
 * or otherwise commercially exploit the source or things you created based on the 
 * source.
 *
*/

#include "cmdline/cmdline.h"
#include "camera/camera.h" //VIEWER_ZOOM_DEFAULT
#include "cfile/cfilesystem.h"
#include "fireball/fireballs.h"
#include "globalincs/linklist.h"
#include "globalincs/pstypes.h"
#include "globalincs/systemvars.h"
#include "globalincs/version.h"
#include "graphics/2d.h"
#include "graphics/openxr.h"
#include "graphics/shadows.h"
#include "hud/hudconfig.h"
#include "io/joy.h"
#include "network/multi.h"
#include "network/multi_log.h"
#include "options/OptionsManager.h"
#include "osapi/osapi.h"
#include "osapi/dialogs.h"
#include "parse/sexp.h"
#include "scripting/scripting.h"
#include "sound/openal.h"
#include "sound/speech.h"
#include "starfield/starfield.h"

#ifdef _WIN32
#include <io.h>
#include <direct.h>
#elif defined(APPLE_APP)
#include <CoreFoundation/CoreFoundation.h>
#endif

#ifdef SCP_UNIX
#include "osapi/osapi.h"
#include <dirent.h>
#include <sys/stat.h>
#endif

#include <cstring>
#include <cstdlib>
#include <cstdio>
#include <sstream>

#include <jansson.h>

// Stupid windows workaround...
#ifdef MessageBox
#undef MessageBox
#endif

enum cmdline_arg_type
{
	AT_NONE       =0,
	AT_INT,
	AT_FLOAT,
	AT_STRING
};
// values and order MUST match cmdline_arg_type
const char *cmdline_arg_types[] =
{
	"NONE",
	"INT",
	"FLOAT",
	"STRING",
};

enum class flag_output_type {
	Binary,
	Json_V1,
};

// variables
class cmdline_parm {
public:
	cmdline_parm *next, *prev;
	const char *name;						// name of parameter, must start with '-' char
	const char *help;						// help text for this parameter
	const bool stacks;					// whether this arg stacks with each use or is replaced by newest use (should only be used for strings!!)
	char *args;						// string value for parameter arguments (NULL if no arguments)
	int name_found;				// true if parameter on command line, otherwise false
	const int arg_type;					// from enum cmdline_arg_type; used for help

	cmdline_parm(const char *name, const char *help, const int arg_type, const bool stacks = false) noexcept;
	~cmdline_parm() noexcept;
	int found();
	int get_int();
	float get_float();
	char *str();
	bool check_if_args_is_valid();
	bool has_param();
};

static cmdline_parm Parm_list(NULL, NULL, AT_NONE);
static int Parm_list_inited = 0;

extern int Show_framerate;	// from freespace.cpp

enum
{
	// DO NOT CHANGE ANYTHING ABOUT THESE FIRST TWO OR WILL MESS UP THE LAUNCHER
	EASY_DEFAULT  =  1 << 1,		// Default FS2 (All features off)
	EASY_ALL_ON   =  1 << 2,		// All features on

	EASY_HI_MEM_ON   =  1 << 3,		// High memory usage features on
	EASY_HI_MEM_OFF  =  1 << 4,		// High memory usage features off

	// Add new flags here
};

enum BuildCaps
{
	BUILD_CAPS_OPENAL = (1<<0),
	BUILD_CAPS_NO_D3D = (1<<1),
	BUILD_CAPS_NEW_SND = (1<<2),
	BUILD_CAPS_SDL = (1<<3)
};

#define PARSE_COMMAND_LINE_STRING	"-parse_cmdline_only"
#define GET_FLAGS_STRING			"-get_flags"

typedef struct
{
	// DO NOT CHANGE THE SIZE OF THIS AT_STRING!
	char name[32];

} EasyFlag;

EasyFlag easy_flags[] =
{
	{ "Custom" },
	{ "Default FS2 (All features off)" },
	{ "All features on" },
	{ "High memory usage features on" },
	{ "High memory usage features off" }
};

// DO NOT CHANGE **ANYTHING** ABOUT THIS STRUCTURE AND ITS CONTENT
typedef struct
{
	char  name[20];		// The actual flag
	char  desc[40];		// The text that will appear in the launcher (unless its blank, other name is shown)
	bool  fso_only;		// true if this is a fs2_open only feature
	int   on_flags;		// "Easy setting" which will turn this option on
	int   off_flags;	// "Easy setting" which will turn this option off
	char  type[16];		// Launcher uses this to put flags under different headings
	char  web_url[256];	// Link to documentation of feature (please use wiki or somewhere constant)

} Flag;

// clang-format off
// Please group them by type, ie graphics, gameplay etc, maximum 20 different types
Flag exe_params[] = 
{
	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-nospec",			"Disable specular",							true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON  | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nospec", },
	{ "-noglow",			"Disable glow maps",						true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON  | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noglow", },
	{ "-noenv",				"Disable environment maps",					true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON  | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noenv", },
	{ "-nonormal",			"Disable normal maps",						true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON  | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nonormal" },
	{ "-emissive_light",	"Enable emissive light from ships",			true,	0,									EASY_DEFAULT,					"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-emissive_light" },
	{ "-noheight",			"Disable height/parallax maps",				true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON  | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noheight" },
	{ "-no_post_process",	"Disable post-processing",					true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_post_process" },
	{ "-soft_particles",	"Enable soft particles",					true,	EASY_ALL_ON,						EASY_DEFAULT,					"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-soft_particles" },
	{ "-aa",				"Enable Post-process anti-aliasing",		true,	EASY_ALL_ON  | EASY_HI_MEM_ON,		EASY_DEFAULT | EASY_HI_MEM_OFF,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-aa" },
	{ "-fb_explosions",		"Enable Framebuffer Shockwaves",			true,	EASY_ALL_ON,						EASY_DEFAULT,					"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fb_explosions", },
    { "-fb_thrusters",      "Enable Framebuffer Thrusters",             true,   EASY_ALL_ON,						EASY_DEFAULT,					"Graphics",     "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fb_thrusters", },
	{ "-no_deferred",		"Disable Deferred Lighting",				true,	EASY_DEFAULT | EASY_HI_MEM_OFF,		EASY_ALL_ON | EASY_HI_MEM_ON,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_deferred"},
	{ "-enable_shadows",	"Enable Shadows",							true,	EASY_ALL_ON  | EASY_HI_MEM_ON,		EASY_DEFAULT | EASY_HI_MEM_OFF,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-enable_shadows"},
	{ "-deferred_cockpit",	"Enable Deferred Lighting for Cockpits",	true,	EASY_ALL_ON	 | EASY_HI_MEM_ON,		EASY_DEFAULT | EASY_HI_MEM_OFF,	"Graphics",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-deferred_cockpit"},

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-no_vsync",			"Disable vertical sync",					true,	0,									EASY_DEFAULT,					"Game Speed",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_vsync", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-fps",				"Show frames per second on HUD",			false,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fps", },
	{ "-dualscanlines",		"Add another pair of scanning lines",		true,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-dualscanlines", },
	{ "-targetinfo",		"Enable info next to target",				true,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-targetinfo", },
	{ "-orbradar",			"Enable 3D radar",							true,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-orbradar", },
	{ "-rearm_timer",		"Enable rearm/repair completion timer",		true,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-rearm_timer", },
	{ "-ballistic_gauge",	"Enable analog ballistic ammo gauge",		true,	0,									EASY_DEFAULT,					"HUD",			"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-ballistic_gauge", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-window",			"Run in window",							true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-window", },
	{ "-fullscreen_window",	"Run in fullscreen window",					false,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fullscreen_window", },
	{ "-capture_mouse",		"Capture the mouse within the window",		true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-capture_mouse", },
	{ "-stretch_menu",		"Stretch interface to fill screen",			true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-stretch_menu", },
	{ "-noscalevid",		"Disable scale-to-window for movies",		true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noscalevid", },
	{ "-no_ap_interrupt",	"Disable interrupting autopilot",			true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_ap_interrupt", },
	{ "-vr",				"Enable Virtual Reality Mode",				true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-vr", },
	{ "-no_unfocused_pause","Don't pause if the window isn't focused",	true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_unfocused_pause", },
	{ "-orig_speedx_range", "Restrict speedup/slowdown (1x to 4x)", 	true,	0,									EASY_DEFAULT,					"Gameplay",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-orig_speedx_range", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-nosound",			"Disable all sound",						false,	0,									EASY_DEFAULT,					"Audio",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nosound", },
	{ "-nomusic",			"Disable music",							false,	0,									EASY_DEFAULT,					"Audio",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nomusic", },
	{ "-no_enhanced_sound",	"Disable enhanced sound",					false,	0,									EASY_DEFAULT,					"Audio",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_enhanced_sound", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-portable_mode",		"Store config in portable location",		false,	0,									EASY_DEFAULT,					"Launcher",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-portable_mode", },
	{ "-joy_info",			"Outputs SDL joystick info",				true,	0,									EASY_DEFAULT,					"Launcher",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-joy_info",},

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-standalone",		"Run as standalone server",					false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-standalone", },
	{ "-startgame",			"Skip mainhall and start hosting",			false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-startgame", },
	{ "-closed",			"Start hosted server as closed",			false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-closed", },
	{ "-restricted",		"Host confirms join requests",				false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-restricted", },
	{ "-multilog",			"",											false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-multilog", },
	{ "-clientdamage",		"",											false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-clientdamage", },
	{ "-mpnoreturn",		"Disable flight deck option",				true,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-mpnoreturn", },
	{ "-gateway_ip",		"Set gateway IP address",					false,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-gateway_ip", },
	{ "-ingame_join",		"Disable in-game joining",					true,	0,									EASY_DEFAULT,					"Multiplayer",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-ingame_join", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-no_set_gamma",		"Disable setting of gamma",					true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_set_gamma", },
	{ "-no_ingame_options",	"Disable using ingame options",				true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_ingame_options", },
	{ "-nomovies",			"Disable video playback",					true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nomovies", },
	{ "-noparseerrors",		"Disable parsing errors",					true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noparseerrors", },
	{ "-loadallweps",		"Load all weapons, even those not used",	true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-loadallweps", },
	{ "-disable_fbo",		"Disable OpenGL RenderTargets",				true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-disable_fbo", },
	{ "-disable_pbo",		"Disable OpenGL Pixel Buffer Objects",		true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-disable_pbo", },
	{ "-ati_swap",			"Fix colour issues on some ATI cards",		true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-ati_swap", },
	{ "-no_3d_sound",		"Use only 2D/stereo for sound effects",		true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_3d_sound", },
	{ "-mipmap",			"Enable mipmapping",						true,	0,									EASY_DEFAULT | EASY_HI_MEM_OFF,	"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-mipmap", },
	{ "-use_gldrawelements","Don't use glDrawRangeElements",			true,	0,									EASY_DEFAULT,					"Troubleshoot",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-use_gldrawelements", },
	{ "-gl_finish",			"Fix input lag on some ATI+Linux systems",	true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-gl_finish", },
	{ "-no_geo_effects",	"Disable geometry shader for effects",		true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_geo_effects", },
	{ "-set_cpu_affinity",	"Sets processor affinity to config value",	true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-set_cpu_affinity", },
	{ "-nograb",			"Disables mouse grabbing",					true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-nograb", },
	{ "-noshadercache",		"Disables the shader cache",				true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noshadercache", },
	{ "-prefer_ipv4",		"Prefer IPv4 DNS lookups",					true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-prefer_ipv4", },
	{ "-prefer_ipv6",		"Prefer IPv6 DNS lookups",					true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-prefer_ipv6", },
	{ "-log_multi_packet",	"Log multi packet types ",					true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-log_multi_packet",},
	{ "-no_bsp_align",		"Disable pof BSP data alignment",			true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_bsp_align", },
    { "-no_large_shaders",	"Split large shader into smaller shaders",		true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_large_shaders", },

#ifdef WIN32
	{ "-fix_registry",	"Use a different registry path",				true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fix_registry", },
#endif

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-voicer",			"Enable voice recognition",					true,	0,									EASY_DEFAULT,					"Experimental",	"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-voicer", },

	//flag					launcher text								FSO		on_flags							off_flags						category		reference URL
	{ "-override_data",		"Enable override directory",				false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-override_data", },
	{ "-bmpmanusage",		"Show how many BMPMAN slots are in use",	false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-bmpmanusage", },
	{ "-pos",				"Show position of camera",					false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-pos", },
	{ "-stats",				"Show statistics",							true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-stats", },
	{ "-coords",			"Show coordinates",							false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-coords", },
	{ "-pofspew",			"Dump model information to pofspew.txt",	false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-pofspew", },
	{ "-weaponspew",		"Dump weapon stats and spreadsheets",		true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-weaponspew", },
	{ "-tablecrcs",			"Dump table CRCs for multi validation",		true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-tablecrcs", },
	{ "-missioncrcs",		"Dump mission CRCs for multi validation",	true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-missioncrcs", },
	{ "-dis_collisions",	"Disable collisions",						true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-dis_collisions", },
	{ "-dis_weapons",		"Disable weapon rendering",					true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-dis_weapons", },
	{ "-output_sexps",		"Output SEXPs to sexps.html",				true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-output_sexps", },
	{ "-output_scripting",	"Output scripting to scripting.html",		true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-output_scripting", },
	{ "-output_script_json",	"Output scripting doc to scripting.json",	true,	0,								EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-output_script_json", },
	{ "-output_script_lua",	"Output scripting doc to scripting.lua",	true,	0,								EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-output_script_luastub", },
	{ "-controlconfig_tbl",	"Save control presets to table",			true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-controlconfig_tbl", },
	{ "-save_render_target",	"Save render targets to file",			true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-save_render_target", },
	{ "-verify_vps",		"Spew VP CRCs to vp_crcs.txt",				true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-verify_vps", },
	{ "-reparse_mainhall",	"Reparse mainhall.tbl when loading halls",	false,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-reparse_mainhall", },
	{ "-noninteractive",	"Disables interactive dialogs",				true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-noninteractive", },
	{ "-benchmark_mode",	"Puts the game into benchmark mode",		true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-benchmark_mode", },
	{ "-profile_frame_time","Profile frame time",						true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-profile_frame_time", },
	{ "-profile_write_file", "Write profiling information to file",		true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-profile_write_file", },
	{ "-json_profiling",	"Generate JSON profiling output",			true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-json_profiling", },
	{ "-debug_window",		"Enable the debug window",					true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-debug_window", },
	{ "-gr_debug",		"Output graphics debug information",			true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-gr_debug", },
	{ "-stdout_log",		"Output log file to stdout",				true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-stdout_log", },
	{ "-slow_frames_ok",	"Don't adjust timestamps for slow frames",	true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-slow_frames_ok", },
	{ "-imgui_debug",		"Show imgui debug/demo window in the lab",  true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-imgui_debug", },
	{ "-luadev",			"Make lua errors non-fatal",				true,	0,									EASY_DEFAULT,					"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-luadev", },
	{"-vulkan",			"Use vulkan render backend",				true,	0,									  EASY_DEFAULT,				"Dev Tool",		"http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-vulkan", },
};
// clang-format on

// forward declaration
const char * get_param_desc(const char *flag_name);

// here are the command line parameters that we will be using for FreeSpace

// RETAIL options ----------------------------------------------
cmdline_parm connect_arg("-connect", "Automatically connect to multiplayer IP:PORT", AT_STRING);			// Cmdline_connect_addr
cmdline_parm gamename_arg("-gamename", "Set multiplayer game name", AT_STRING);		// Cmdline_game_name
cmdline_parm gamepassword_arg("-password", "Set multiplayer game password", AT_STRING);	// Cmdline_game_password
cmdline_parm allowabove_arg("-allowabove", "Ranks above this can join multi", AT_STRING);	// Cmdline_rank_above
cmdline_parm allowbelow_arg("-allowbelow", "Ranks below this can join multi", AT_STRING);	// Cmdline_rank_below
cmdline_parm standalone_arg("-standalone", NULL, AT_NONE);
cmdline_parm nosound_arg("-nosound", NULL, AT_NONE);			// Cmdline_freespace_no_sound
cmdline_parm nomusic_arg("-nomusic", NULL, AT_NONE);			// Cmdline_freespace_no_music
cmdline_parm noenhancedsound_arg("-no_enhanced_sound", NULL, AT_NONE);	// Cmdline_no_enhanced_sound
cmdline_parm startgame_arg("-startgame", NULL, AT_NONE);		// Cmdline_start_netgame
cmdline_parm gameclosed_arg("-closed", NULL, AT_NONE);		// Cmdline_closed_game
cmdline_parm gamerestricted_arg("-restricted", NULL, AT_NONE);	// Cmdline_restricted_game
cmdline_parm port_arg("-port", "Multiplayer network port", AT_INT);
cmdline_parm multilog_arg("-multilog", NULL, AT_NONE);		// Cmdline_multi_log
cmdline_parm pof_spew("-pofspew", NULL, AT_NONE);			// Cmdline_spew_pof_info
cmdline_parm weapon_spew("-weaponspew", nullptr, AT_STRING);			// Cmdline_spew_weapon_stats
cmdline_parm mouse_coords("-coords", NULL, AT_NONE);			// Cmdline_mouse_coords
cmdline_parm timeout("-timeout", "Multiplayer network timeout (secs)", AT_INT);				// Cmdline_timeout
cmdline_parm bit32_arg("-32bit", "Deprecated", AT_NONE);				// (only here for retail compatibility reasons, doesn't actually do anything)

char *Cmdline_connect_addr = NULL;
char *Cmdline_game_name = NULL;
char *Cmdline_game_password = NULL;
char *Cmdline_rank_above = NULL;
char *Cmdline_rank_below = NULL;
int Cmdline_cd_check = 1;
int Cmdline_closed_game = 0;
int Cmdline_freespace_no_music = 0;
int Cmdline_freespace_no_sound = 0;
int Cmdline_mouse_coords = 0;
int Cmdline_multi_log = 0;
int Cmdline_multi_stream_chat_to_file = 0;
int Cmdline_network_port = -1;
int Cmdline_restricted_game = 0;
int Cmdline_spew_pof_info = 0;
WeaponSpewType Cmdline_spew_weapon_stats = WeaponSpewType::NONE;
int Cmdline_start_netgame = 0;
int Cmdline_timeout = -1;
int Cmdline_use_last_pilot = 0;


// FSO options -------------------------------------------------

// Graphics related
cmdline_parm fov_arg("-fov", "Vertical field-of-view factor", AT_FLOAT);					// Cmdline_fov  -- comand line FOV -Bobboau
cmdline_parm fov_cockpit_arg("-fov_cockpit", "Vertical field-of-view factor for Cockpits", AT_FLOAT);
cmdline_parm ambient_power_arg("-ambient", "Multiplies the brightness of all ambient light", AT_FLOAT);
cmdline_parm light_power_arg("-light", "Multiplies the brightness of all light", AT_FLOAT);
cmdline_parm emissive_power_arg("-emissive", "Multiplies the brightness of all ambient light", AT_FLOAT);
cmdline_parm emissive_arg("-emissive_light", "Enable emissive light from ships", AT_NONE);		// semi-deprecated but still functional
cmdline_parm env("-noenv", NULL, AT_NONE);								// Cmdline_env
cmdline_parm glow_arg("-noglow", NULL, AT_NONE); 						// Cmdline_glow  -- use Bobs glow code
cmdline_parm noscalevid_arg("-noscalevid", NULL, AT_NONE);				// Cmdline_noscalevid  -- disable video scaling that fits to window
cmdline_parm spec_arg("-nospec", NULL, AT_NONE);			// Cmdline_spec  --
cmdline_parm normal_arg("-nonormal", NULL, AT_NONE);						// Cmdline_normal  -- disable normal mapping
cmdline_parm height_arg("-noheight", NULL, AT_NONE);						// Cmdline_height  -- enable support for parallax mapping
cmdline_parm softparticles_arg("-soft_particles", NULL, AT_NONE);
cmdline_parm no_postprocess_arg("-no_post_process", "Disables post-processing", AT_NONE);
cmdline_parm post_process_aa_arg("-aa", "Enables post-process antialiasing", AT_NONE);
cmdline_parm post_process_aa_preset_arg("-aa_preset", "Sets the AA effect to use. See the wiki for details", AT_INT);
cmdline_parm deprecated_fxaa_arg("-fxaa", nullptr, AT_NONE);
cmdline_parm deprecated_fxaa_preset_arg("-fxaa_preset", "FXAA quality (0-2), requires post-processing and -fxaa", AT_INT);
cmdline_parm deprecated_smaa_arg("-smaa", nullptr, AT_NONE);
cmdline_parm deprecated_smaa_preset_arg("-smaa_preset", "SMAA quality (0-3), requires post-processing and -smaa", AT_INT);
cmdline_parm msaa_enabled_arg("-msaa", nullptr, AT_INT);
cmdline_parm fb_explosions_arg("-fb_explosions", NULL, AT_NONE);
cmdline_parm fb_thrusters_arg("-fb_thrusters", NULL, AT_NONE);
cmdline_parm shadow_quality_arg("-shadow_quality", NULL, AT_INT);
cmdline_parm enable_shadows_arg("-enable_shadows", NULL, AT_NONE);
cmdline_parm rt_shadows_arg("-rt_shadows", nullptr, AT_NONE);
cmdline_parm no_deferred_lighting_arg("-no_deferred", NULL, AT_NONE);	// Cmdline_no_deferred
cmdline_parm deferred_lighting_cockpit_arg("-deferred_cockpit", nullptr, AT_NONE);
cmdline_parm anisotropy_level_arg("-anisotropic_filter", NULL, AT_INT);

float Cmdline_ambient_power = 1.0f;
float Cmdline_emissive_power = 0.0f;
float Cmdline_light_power = 1.0f;
int Cmdline_env = 1;
int Cmdline_mipmap = 0;
int Cmdline_glow = 1;
int Cmdline_noscalevid = 0;
int Cmdline_spec = 1;
int Cmdline_emissive = 0;
int Cmdline_normal = 1;
int Cmdline_height = 1;
int Cmdline_softparticles = 0;
int Cmdline_no_deferred_lighting = 0;
bool Cmdline_deferred_lighting_cockpit = false;
int Cmdline_aniso_level = 0;
int Cmdline_msaa_enabled = 0;

// Game Speed related
cmdline_parm no_fpscap("-no_fps_capping", "Don't limit frames-per-second", AT_NONE);	// Cmdline_NoFPSCap
cmdline_parm no_vsync_arg("-no_vsync", NULL, AT_NONE);		// Cmdline_no_vsync

int Cmdline_NoFPSCap = 0; // Disable FPS capping - kazan
bool Cmdline_no_vsync = false;

// HUD related
cmdline_parm ballistic_gauge("-ballistic_gauge", NULL, AT_NONE);	// Cmdline_ballistic_gauge
cmdline_parm dualscanlines_arg("-dualscanlines", NULL, AT_NONE); // Cmdline_dualscanlines  -- Change to phreaks options including new targeting code; semi-deprecated but still functional
cmdline_parm orb_radar("-orbradar", NULL, AT_NONE);			// Cmdline_orb_radar
cmdline_parm rearm_timer_arg("-rearm_timer", NULL, AT_NONE);	// Cmdline_rearm_timer; semi-deprecated but still functional-Mjn
cmdline_parm targetinfo_arg("-targetinfo", NULL, AT_NONE);	// Cmdline_targetinfo  -- Adds ship name/class to right of target box -C; semi-deprecated but still functional-Mjn

int Cmdline_ballistic_gauge = 0;	// WMCoolmon's gauge thingy
int Cmdline_dualscanlines = 0;
int Cmdline_orb_radar = 0;
int Cmdline_rearm_timer = 0;

// Gameplay related
cmdline_parm allow_autpilot_interrupt("-no_ap_interrupt", nullptr, AT_NONE);
cmdline_parm stretch_menu("-stretch_menu", nullptr, AT_NONE);	// Cmdline_stretch_menu
cmdline_parm capture_mouse("-capture_mouse", nullptr, AT_NONE);	// Cmdline_capture_mouse
cmdline_parm vr("-vr", nullptr, AT_NONE);
cmdline_parm deadzone("-deadzone", 
"Sets the joystick deadzone. Integer value from 0 to 100 as a percentage of the joystick's range (100% would make the stick do nothing). Disables deadzone slider in the in-game Options menu.", AT_INT); //Cmdline_deadzone

int Cmdline_autopilot_interruptable = 1;
bool Cmdline_stretch_menu = false;
bool Cmdline_capture_mouse = false;
int Cmdline_deadzone = -1;
bool Cmdline_enable_vr = false;

// Audio related
cmdline_parm voice_recognition_arg("-voicer", NULL, AT_NONE);	// Cmdline_voice_recognition

int Cmdline_voice_recognition = 0;
int Cmdline_no_enhanced_sound = 0;

// MOD related
cmdline_parm mod_arg("-mod", "List of folders to overwrite/add-to the default data", AT_STRING, true);	// Cmdline_mod  -- DTP modsupport
cmdline_parm campaign_arg("-campaign", "Set current campaign", AT_STRING);	// Cmdline_campaign

char *Cmdline_mod = NULL; //DTP for mod argument
char *Cmdline_campaign = nullptr; // for campaign argument

// Multiplayer/Network related
cmdline_parm almission_arg("-almission", "Autoload multiplayer mission", AT_STRING);		// Cmdline_almission  -- DTP for autoload Multi mission
cmdline_parm ingamejoin_arg("-ingame_join", NULL, AT_NONE);	// Cmdline_ingamejoin
cmdline_parm mpnoreturn_arg("-mpnoreturn", NULL, AT_NONE);	// Cmdline_mpnoreturn  -- Removes 'Return to Flight Deck' in respawn dialog -C
cmdline_parm objupd_arg("-cap_object_update", "Multiplayer object update cap (0-3)", AT_INT);
cmdline_parm gateway_ip_arg("-gateway_ip", "Set gateway IP address", AT_STRING);

char *Cmdline_almission = nullptr;	//DTP for autoload multi mission.
int Cmdline_ingamejoin = 1;
int Cmdline_mpnoreturn = 0;
int Cmdline_objupd = 3;		// client object updates on LAN by default
char *Cmdline_gateway_ip = nullptr;

// Launcher related options
cmdline_parm portable_mode("-portable_mode", NULL, AT_NONE);
cmdline_parm joy_info("-joy_info", "Outputs SDL joystick info", AT_NONE);
cmdline_parm lang_arg("-language", "Language name as defined in strings.tbl", AT_STRING);

bool Cmdline_portable_mode = false;
SCP_string Cmdline_lang;

// Troubleshooting
cmdline_parm loadallweapons_arg("-loadallweps", NULL, AT_NONE);	// Cmdline_load_all_weapons
cmdline_parm nomovies_arg("-nomovies", NULL, AT_NONE);		// Cmdline_nomovies  -- Allows video streaming
cmdline_parm no_set_gamma_arg("-no_set_gamma", NULL, AT_NONE);	// Cmdline_no_set_gamma
cmdline_parm no_ingame_options_arg("-no_ingame_options", NULL, AT_NONE); // Cmdline_no_ingame_options
cmdline_parm no_fbo_arg("-disable_fbo", NULL, AT_NONE);		// Cmdline_no_fbo
cmdline_parm no_pbo_arg("-disable_pbo", NULL, AT_NONE);		// Cmdline_no_pbo
cmdline_parm mipmap_arg("-mipmap", NULL, AT_NONE);			// Cmdline_mipmap
cmdline_parm atiswap_arg("-ati_swap", NULL, AT_NONE);        // Cmdline_atiswap - Fix ATI color swap issue for screenshots.
cmdline_parm no3dsound_arg("-no_3d_sound", NULL, AT_NONE);		// Cmdline_no_3d_sound - Disable use of full 3D sounds
cmdline_parm no_drawrangeelements("-use_gldrawelements", NULL, AT_NONE); // Cmdline_drawelements -- Uses glDrawElements instead of glDrawRangeElements
cmdline_parm keyboard_layout("-keyboard_layout", "Specify keyboard layout (qwertz or azerty)", AT_STRING);
cmdline_parm gl_finish ("-gl_finish", NULL, AT_NONE);
cmdline_parm no_geo_sdr_effects("-no_geo_effects", NULL, AT_NONE);
cmdline_parm set_cpu_affinity("-set_cpu_affinity", NULL, AT_NONE);
cmdline_parm nograb_arg("-nograb", NULL, AT_NONE);
cmdline_parm noshadercache_arg("-noshadercache", NULL, AT_NONE);
cmdline_parm prefer_ipv4_arg("-prefer_ipv4", nullptr, AT_NONE);
cmdline_parm prefer_ipv6_arg("-prefer_ipv6", nullptr, AT_NONE);
cmdline_parm log_multi_packet_arg("-log_multi_packet", nullptr, AT_NONE);
cmdline_parm no_bsp_align_arg("-no_bsp_align", nullptr, AT_NONE);
cmdline_parm no_large_shaders("-no_large_shaders", NULL, AT_NONE);
#ifdef WIN32
cmdline_parm fix_registry("-fix_registry", NULL, AT_NONE);
#endif

int Cmdline_load_all_weapons = 0;
int Cmdline_nomovies = 0;
int Cmdline_no_set_gamma = 0;
bool Cmdline_no_ingame_options = false;
int Cmdline_no_fbo = 0;
int Cmdline_no_pbo = 0;
int Cmdline_ati_color_swap = 0;
int Cmdline_no_3d_sound = 0;
int Cmdline_drawelements = 0;
char* Cmdline_keyboard_layout = NULL;
bool Cmdline_gl_finish = false;
bool Cmdline_no_geo_sdr_effects = false;
bool Cmdline_set_cpu_affinity = false;
bool Cmdline_nograb = false;
bool Cmdline_noshadercache = false;
bool Cmdline_prefer_ipv4 = false;
bool Cmdline_prefer_ipv6 = false;
bool Cmdline_dump_packet_type = false;
bool Cmdline_no_bsp_align = false;
bool Cmdline_no_large_shaders = false;
#ifdef WIN32
bool Cmdline_alternate_registry_path = false;
#endif
uint Cmdline_rng_seed = 0;
bool Cmdline_reuse_rng_seed = false;

// Developer/Testing related
cmdline_parm start_mission_arg("-start_mission", "Skip mainhall and run this mission", AT_STRING);	// Cmdline_start_mission
cmdline_parm dis_collisions("-dis_collisions", NULL, AT_NONE);	// Cmdline_dis_collisions
cmdline_parm dis_weapons("-dis_weapons", NULL, AT_NONE);		// Cmdline_dis_weapons
cmdline_parm noparseerrors_arg("-noparseerrors", NULL, AT_NONE);	// Cmdline_noparseerrors  -- turns off parsing errors -C
cmdline_parm extra_warn_arg("-extra_warn", "Enable 'extra' warnings", AT_NONE);	// Cmdline_extra_warn
cmdline_parm fps_arg("-fps", NULL, AT_NONE);					// Cmdline_show_fps
cmdline_parm bmpmanusage_arg("-bmpmanusage", NULL, AT_NONE);	// Cmdline_bmpman_usage
cmdline_parm pos_arg("-pos", NULL, AT_NONE);					// Cmdline_show_pos
cmdline_parm stats_arg("-stats", NULL, AT_NONE);				// Cmdline_show_stats
cmdline_parm save_render_targets_arg("-save_render_target", NULL, AT_NONE);	// Cmdline_save_render_targets
cmdline_parm window_arg("-window", NULL, AT_NONE);				// Cmdline_window
cmdline_parm fullscreen_window_arg("-fullscreen_window", "Fullscreen/borderless window (Windows only)", AT_NONE);
cmdline_parm deprecated_res_arg("-res", "Deprecated, resolution, formatted like 1600x900", AT_STRING);
cmdline_parm render_res_arg("-render_res", "Resolution, formatted like 1600x900", AT_STRING);
cmdline_parm window_res_arg("-window_res", "Window resolution, formatted like 1600x900.", AT_STRING);
cmdline_parm center_res_arg("-center_res", "Resolution of center monitor, formatted like 1600x900", AT_STRING);
cmdline_parm hdr_nits_arg("-hdr", "Forces HDR output on, overriding the in-game HDR setting. Optionally takes paper white and peak luminance in nits, formatted like 400,1500, overriding the in-game HDR nits settings.", AT_STRING);
cmdline_parm verify_vps_arg("-verify_vps", NULL, AT_NONE);	// Cmdline_verify_vps  -- spew VP crcs to vp_crcs.txt
cmdline_parm parse_cmdline_only(PARSE_COMMAND_LINE_STRING, "Ignore any cmdline_fso.cfg files", AT_NONE);
cmdline_parm reparse_mainhall_arg("-reparse_mainhall", NULL, AT_NONE); //Cmdline_reparse_mainhall
cmdline_parm frame_profile_write_file("-profile_write_file", NULL, AT_NONE); // Cmdline_profile_write_file
cmdline_parm no_unfocused_pause_arg("-no_unfocused_pause", NULL, AT_NONE); //Cmdline_no_unfocus_pause
cmdline_parm retail_time_compression_range_arg("-orig_speedx_range", NULL, AT_NONE); //Cmdline_retail_time_compression_range
cmdline_parm benchmark_mode_arg("-benchmark_mode", NULL, AT_NONE); //Cmdline_benchmark_mode
cmdline_parm pilot_arg("-pilot", nullptr, AT_STRING); //Cmdline_pilot
cmdline_parm noninteractive_arg("-noninteractive", NULL, AT_NONE); //Cmdline_noninteractive
cmdline_parm json_profiling("-json_profiling", NULL, AT_NONE); //Cmdline_json_profiling
cmdline_parm show_video_info("-show_video_info", NULL, AT_NONE); //Cmdline_show_video_info
cmdline_parm frame_profile_arg("-profile_frame_time", NULL, AT_NONE); //Cmdline_frame_profile
cmdline_parm debug_window_arg("-debug_window", NULL, AT_NONE);	// Cmdline_debug_window
cmdline_parm graphics_debug_output_arg("-gr_debug", nullptr, AT_NONE); // Cmdline_graphics_debug_output
cmdline_parm gr_sync_validation_arg("-gr_sync_validation", nullptr, AT_NONE); // Cmdline_gr_sync_validation (implies -gr_debug)
cmdline_parm log_to_stdout_arg("-stdout_log", nullptr, AT_NONE); // Cmdline_log_to_stdout
cmdline_parm slow_frames_ok_arg("-slow_frames_ok", nullptr, AT_NONE);	// Cmdline_slow_frames_ok
cmdline_parm fixed_seed_rand("-seed", nullptr, AT_INT);	// Cmdline_rng_seed,Cmdline_reuse_rng_seed;
cmdline_parm luadev_arg("-luadev", "Make lua errors non-fatal", AT_NONE);	// Cmdline_lua_devmode
cmdline_parm override_arg("-override_data", "Enable override directory", AT_NONE);	// Cmdline_override_data
cmdline_parm imgui_debug_arg("-imgui_debug", nullptr, AT_NONE);
cmdline_parm vulkan("-vulkan", nullptr, AT_NONE);
cmdline_parm opengl("-opengl", nullptr, AT_NONE);
cmdline_parm multithreading("-threads", nullptr, AT_INT);

char *Cmdline_start_mission = NULL;
int Cmdline_dis_collisions = 0;
int Cmdline_dis_weapons = 0;
bool Cmdline_output_sexp_info = false;
int Cmdline_noparseerrors = 0;
#ifdef Allow_NoWarn
int Cmdline_nowarn = 0; // turn warnings off in FRED
#endif
int Cmdline_extra_warn = 0;
int Cmdline_bmpman_usage = 0;
int Cmdline_show_pos = 0;
int Cmdline_show_stats = 0;
int Cmdline_save_render_targets = 0;
bool Cmdline_window = false;
bool Cmdline_fullscreen_window = false;
std::optional<std::pair<uint16_t, uint16_t>>Cmdline_window_res = std::nullopt;
char *Cmdline_res = 0;
char *Cmdline_center_res = 0;
int Cmdline_verify_vps = 0;
int Cmdline_reparse_mainhall = 0;
bool Cmdline_profile_write_file = false;
bool Cmdline_no_unfocus_pause = false;
bool Cmdline_retail_time_compression_range = false;
bool Cmdline_benchmark_mode = false;
const char *Cmdline_pilot = nullptr;
bool Cmdline_noninteractive = false;
bool Cmdline_json_profiling = false;
bool Cmdline_frame_profile = false;
bool Cmdline_show_video_info = false;
bool Cmdline_debug_window = false;
bool Cmdline_graphics_debug_output = false;
bool Cmdline_gr_sync_validation = false;
bool Cmdline_log_to_stdout = false;
bool Cmdline_slow_frames_ok = false;
bool Cmdline_lua_devmode = false;
bool Cmdline_override_data = false;
bool Cmdline_show_imgui_debug = false;
GraphicsAPI Cmdline_graphics_api = GraphicsAPI::Default;
int Cmdline_multithreading = 1;

// Other
cmdline_parm get_flags_arg(GET_FLAGS_STRING, "Output the launcher flags file", AT_STRING);
cmdline_parm output_sexp_arg("-output_sexps", NULL, AT_NONE); //WMC - outputs all SEXPs to sexps.html
cmdline_parm output_scripting_arg("-output_scripting", NULL, AT_NONE);	//WMC
cmdline_parm output_script_json_arg("-output_script_json", nullptr, AT_NONE);	// m!m
cmdline_parm output_script_luastub_arg("-output_script_lua", nullptr, AT_NONE); // mjnmixael
cmdline_parm generate_controlconfig_arg("-controlconfig_tbl", nullptr, AT_NONE);	

// Deprecated flags - CommanderDJ
cmdline_parm deprecated_spec_arg("-spec", "Deprecated", AT_NONE);
cmdline_parm deprecated_glow_arg("-glow", "Deprecated", AT_NONE);
cmdline_parm deprecated_normal_arg("-normal", "Deprecated", AT_NONE);
cmdline_parm deprecated_env_arg("-env", "Deprecated", AT_NONE);
cmdline_parm deprecated_tbp_arg("-tbp", "Deprecated", AT_NONE);
cmdline_parm deprecated_jpgtga_arg("-jpgtga", "Deprecated", AT_NONE);
cmdline_parm deprecated_htl_arg("-nohtl", "Deprecated", AT_NONE);
cmdline_parm deprecated_brieflighting_arg("-brief_lighting", "Deprecated", AT_NONE);
cmdline_parm deprecated_sndpreload_arg("-snd_preload", "Deprecated", AT_NONE);
cmdline_parm deprecated_missile_lighting_arg("-missile_lighting", "Deprecated", AT_NONE);
cmdline_parm deprecated_cache_bitmaps_arg("-cache_bitmaps", "Deprecated", AT_NONE);
cmdline_parm deprecated_no_emissive_arg("-no_emissive_light", "Deprecated", AT_NONE);
cmdline_parm deprecated_postprocess_arg("-post_process", "Deprecated", AT_NONE);
cmdline_parm deprecated_spec_static_arg("-spec_static", "Deprecated", AT_NONE);
cmdline_parm deprecated_spec_point_arg("-spec_point", "Deprecated", AT_NONE);
cmdline_parm deprecated_spec_tube_arg("-spec_tube", "Deprecated", AT_NONE);
cmdline_parm deprecated_ambient_factor_arg("-ambient_factor", "Deprecated", AT_NONE);	//
cmdline_parm deprecated_ship_choice_3d_arg("-ship_choice_3d", "Deprecated", AT_NONE);
cmdline_parm deprecated_weapon_choice_3d_arg("-weapon_choice_3d", "Deprecated", AT_NONE);
cmdline_parm deprecated_no_screenshake("-no_screenshake", "Deprecated", AT_NONE);
cmdline_parm deprecated_bloom_intensity_arg("-bloom_intensity", "Deprecated", AT_INT);
cmdline_parm deprecated_nomotiondebris_arg("-nomotiondebris", "Deprecated", AT_NONE);
cmdline_parm deprecated_flightshaftsoff_arg("-nolightshafts", "Deprecated", AT_NONE);
cmdline_parm deprecated_use_warp_flash("-warp_flash", "Deprecated", AT_NONE);
cmdline_parm deprecated_use_3dwarp("-3dwarp", "Deprecated", AT_NONE);
cmdline_parm deprecated_enable_3d_shockwave_arg("-3dshockwave", "Deprecated", AT_NONE);

#ifndef NDEBUG
// NOTE: this assumes that os_init() has already been called but isn't a fatal error if it hasn't
void cmdline_debug_print_cmdline()
{
	cmdline_parm *parmp;
	int found = 0;
	mprintf(("Passed cmdline options:"));

	for (parmp = GET_FIRST(&Parm_list); parmp !=END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp) ) {
		if ( parmp->name_found ) {
			if ( parmp->args != NULL ) {
				mprintf(("\n  %s %s", parmp->name, parmp->args));
			} else {
				mprintf(("\n  %s", parmp->name));
			}
			found++;
		}
	}

	if ( !found )
		mprintf(("\n  <none>"));

	mprintf(("\n"));

	//Print log messages about any deprecated flags we found - CommanderDJ
	//Do it programmatically, rather than enumerating them by hand - MageKing17
	for (parmp = GET_FIRST(&Parm_list); parmp != END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp)) {
		if (parmp->name_found && !stricmp("deprecated", parmp->help)) {
			mprintf(("Deprecated flag '%s' found. Please remove from your cmdline.\n", parmp->name));
		}
	}
}
#endif

// builds simple cmdline
SCP_string cmdline_build_string()
{
	cmdline_parm *parmp;
	int found = 0;
	std::ostringstream cmdline;

	for (parmp = GET_FIRST(&Parm_list); parmp !=END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp) ) {
		if ( parmp->name_found ) {
			cmdline << " " << parmp->name;

			if (parmp->args) {
				cmdline << " " << parmp->args;
			}

			found++;
		}
	}

	if ( !found ) {
		return "";
	}

	return cmdline.str();
}

// prints simple cmdline to multi.log
void cmdline_print_cmdline_multi()
{
	auto str = cmdline_build_string();

	ml_printf("Command line:%s", str.empty() ? " <none>" : str.c_str());
}

//	Return true if this character is an extra char (white space and quotes)
int is_extra_space(char ch)
{
	return ((ch == ' ') || (ch == '\t') || (ch == 0x0a) || (ch == '\'') || (ch == '\"'));
}

// eliminates all leading and trailing extra chars from a string.  Returns pointer passed in.
char *drop_extra_chars(char *str)
{
	size_t s;
	size_t e;

	s = 0;
	while (str[s] && is_extra_space(str[s]))
		s++;

	e = strlen(str);

	if (e > 0) {
		// we already account for NULL later on, so the -1 is here to make
		// sure we do our math without taking it into consideration
		e -= 1;
	}

	while (e > s) {
		if (!is_extra_space(str[e])){
			break;
		}

		e--;
	}

	if (e >= s && e !=0 ){
		memmove(str, str + s, e - s + 1);
	}

	str[e - s + 1] = 0;
	return str;
}


/*
 * @brief Processes one argument for the given parameter
 *
 * @param param The parameter to check
 * @param argc The argument count
 * @param argc The argument values
 * @param argc The current index
 * @return @c true when an extra parameter was found, @c false otherwise
 */
bool parm_stuff_args(cmdline_parm *parm, int argc, char *argv[], int index)
{
	Assert(index < argc);

	if (index + 1 < argc)
	{
		char* value = argv[index + 1];
		if (value[0] == '-')
		{
			// Found another argument, just return
			return false;
		}
		else
		{
			char* saved_args = NULL;

			if (parm->args != NULL) {
				if (parm->stacks) {
					saved_args = parm->args;
				}
				else {
					delete[] parm->args;
				}

				parm->args = NULL;
			}

			size_t argsize = strlen(argv[index + 1]);
			size_t buffersize = argsize;

			if (saved_args != NULL)
			{
				// Add one for the , separating args
				buffersize += strlen(saved_args) + 1;
			}

			buffersize += 1; // Null-terminator

			parm->args = new char[buffersize];
			memset(parm->args, 0, buffersize);

			if (saved_args != NULL)
			{
				// saved args go first, then new arg
				strcpy_s(parm->args, buffersize, saved_args);
				// add a separator too, so that we can tell the args apart
				strcat_s(parm->args, buffersize, ",");
				// now the new arg
				strcat_s(parm->args, buffersize, argv[index + 1]);

				delete[] saved_args;
			}
			else
			{
				strcpy_s(parm->args, buffersize, argv[index + 1]);
			}

			return true;
		}
	}
	else
	{
		// Last argument, can't have any values
		return false;
	}
}


// internal function - parse the command line, extracting parameter arguments if they exist
// cmdline - command line string passed to the application
void os_parse_parms(int argc, char *argv[])
{
	// locate command line parameters
	cmdline_parm *parmp;

	for (int i = 0; i < argc; i++)
	{
		// On OS X this gets passed if the application was launched by double-clicking in the Finder
		if (i == 1 && strncmp(argv[i], "-psn", 4) == 0)
		{
			continue;
		}

		for (parmp = GET_FIRST(&Parm_list); parmp != END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp)) {
			if (!stricmp(parmp->name, argv[i]))
			{
				parmp->name_found = 1;
				if (parm_stuff_args(parmp, argc, argv, i))
				{
					i++;
				}
			}
		}
	}
}


// validate the command line parameters.  Display an error if an unrecognized parameter is located.
void os_validate_parms(int argc, char *argv[])
{
	cmdline_parm *parmp;
	char *token;
	int parm_found;

	for (int i = 0; i < argc; i++)
	{
		token = argv[i];

		// On OS X this gets passed if the application was launched by double-clicking in the Finder
		if (i == 1 && strncmp(token, "-psn", 4) == 0) {
			continue;
		}

		if (token[0] == '-') {
			parm_found = 0;

			for (parmp = GET_FIRST(&Parm_list); parmp != END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp)) {
				if (!stricmp(parmp->name, token)) {
					parm_found = 1;
					break;
				}
			}

			if (parm_found == 0) {
				// if we got a -help, --help, -h, or -? then show the help text, otherwise show unknown option
				if (!stricmp(token, "-help") || !stricmp(token, "--help") || !stricmp(token, "-h") || !stricmp(token, "-?")) {
					printf("FreeSpace 2 Open, version %s\n", FS_VERSION_FULL);
					printf("Website: https://scp.indiegames.us\n");
					printf("Github (bug reporting): https://github.com/scp-fs2open/fs2open.github.com/issues\n\n");
					printf("Usage: fs2_open [options]\n");

					// not the prettiest thing but the job gets done
					static const int STR_SIZE = 25;  // max len of exe_params.name + 5 spaces
					const int AT_SIZE = 8;  // max len of cmdline_arg_types[] + 2 spaces
					size_t atp = 0;
					size_t sp = 0;
					for (parmp = GET_FIRST(&Parm_list); parmp !=END_OF_LIST(&Parm_list); parmp = GET_NEXT(parmp) ) {
						// don't output deprecated flags
						if (stricmp("deprecated", parmp->help) != 0) {
							sp = strlen(parmp->name);
							if (parmp->arg_type != AT_NONE) {
								atp = strlen(cmdline_arg_types[parmp->arg_type]);
								printf("    [ %s ]%*s[ %s ]%*s- %s\n", parmp->name, (int)(STR_SIZE - sp -1), NOX(" "), cmdline_arg_types[parmp->arg_type], (int)(AT_SIZE-atp), NOX(" "), parmp->help);
							} else {
								printf("    [ %s ]%*s- %s\n", parmp->name, (int)(STR_SIZE - sp -1 +AT_SIZE+4), NOX(" "), parmp->help);
							}
						}
					}

					printf("\n");
					exit(0);
				}
				else {
					char buffer[128];
					sprintf(buffer, "Unrecognized command line parameter %s.", token);

					os::dialogs::Message(os::dialogs::MESSAGEBOX_INFORMATION, buffer);
				}
			}
		}
	}
}

int parse_cmdline_string(char* cmdline, char** argv)
{
	size_t length = strlen(cmdline);

	bool start_found = false;
	bool quoted = false;

	size_t argc = 0;
	char* current_argv = NULL;
	for (size_t i = 0; i < length; i++)
	{
		if (!start_found && !isspace(cmdline[i]))
		{
			start_found = true;
			current_argv = (cmdline + i);
		}
		else if (start_found)
		{
			if (cmdline[i] == '"')
			{
				quoted = !quoted;

				if (!quoted && current_argv != NULL)
				{
					if (argv != NULL)
					{
						// Terminate string at quote
						cmdline[i] = '\0';
						argv[argc] = current_argv;
						current_argv = NULL;
					}

					argc++;
				}
			}
			else if (isspace(cmdline[i]) && !quoted)
			{
				// Parameter terminated by space
				if (current_argv != NULL) // == NULL means that we currently don't have a parameter
				{
					if (argv != NULL)
					{
						// Terminate string at quote
						cmdline[i] = '\0';
						argv[argc] = current_argv;
						current_argv = NULL;
					}

					argc++;
				}
			}
			else if (current_argv == NULL)
			{
				current_argv = cmdline + i;
			}
		}
	}

	if (current_argv != NULL)
	{
		if (argv != NULL)
		{
			// Terminate string at quote
			argv[argc] = current_argv;
			current_argv = NULL;
		}

		argc++;
	}

	return (int)argc;
}

void os_process_cmdline(char* cmdline)
{
	int argc = parse_cmdline_string(cmdline, NULL);

	char** argv = new char*[argc];

	argc = parse_cmdline_string(cmdline, argv);

	os_parse_parms(argc, argv);
	os_validate_parms(argc, argv);

	delete[] argv;
}

bool has_cmdline_only_or_get_flags(int argc, char *argv[])
{
	for (int i = 0; i < argc; ++i)
	{
		if (!strcmp(argv[i], PARSE_COMMAND_LINE_STRING) || !strcmp(argv[i], GET_FLAGS_STRING))
		{
			return true;
		}
	}

	return false;
}