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sopwith(6)			 Games Manual			    sopwith(6)

NAME
       sopwith - classic aerial	combat shoot em	up game

SYNOPSIS
       sopwith	[  -n  | -s | -c | -l |	-j host	] [-f] [-glevel] [-m filename]
       [-q]

DESCRIPTION
       Sopwith is a modern port	of the classic 1980s shoot 'em up game of  the
       same  name.  The	 game  has a World War I aviation theme. The object of
       Sopwith is to destroy all enemy targets with a  somewhat	 limited  air-
       force.

       It  can	be  played  both  in single player and multiplayer mode	over a
       TCP/IP network.

       Sopwith looks for a configuration file in the user's home directory  at
       ~/.local/share/SDL  Sopwith/sopwith.cfg;	the configuration file is only
       generated after the user	changes	one of the settings from  the  in-game
       options	menu.  Details about the contents of this file can be found in
       sopwith.cfg(5).

OPTIONS
       -n     Start a single player game in novice mode. In novice mode	 there
	      are  no  oxen or birds, you have infinite	ammo and bombs,	and it
	      is not possible to stall the plane. This is a good option	if you
	      are new to the game, or if you're	just interested	in more	casual
	      gameplay without so much of a challenge.

       -s     Start a single player in expert mode

       -c     Start a single player vs.	computer game

       -l     Start a network game listening for a  network  connection.   See
	      the section "MULTIPLAYER SERVERS"	below for more details.

       -p     Use  a different TCP port	for multiplayer	games than the default
	      (3847).

       -j host:port
	      Start a network game, connecting to another  listening  host  as
	      specified	by host:port. If the port number is not	specified then
	      TCP port 3847 is used.

       -f     Start in full screen mode	if possible.

       -glevel
	      Start  the game on the indicated difficulty level. For instance,
	      use -g2 to start the game	on level 2. The	default	is level 0.

       -q     Turn off sound (quiet)

       -m filename
	      Load new mission (level) from the	given filename.	 See  sopwith-
	      mission(5) for details of	the level format.

       -v or --version
	      Show version number and exit.

EXAMPLES
       sopwith -c -q
	      Start a single player game vs. the computer with sound disabled.

       sopwith -g 3 -p 9999 -l
	      Start  a	game  server,  listening  on TCP port 9999, playing on
	      level three difficulty.

       sopwith -j example.com:9999
	      Connect to a game	server at example.com on TCP port 9999.

CONTROLS
       The standard controls on	a US layout keyboard are as follows:

       comma  pull up

       slash  pull down

       period flip plane

       Z      decrease speed

       X      increase speed

       space  fire machine gun

       B      drop bomb

       H      autopilot	plane to home base

       S      turn on sound effects

       Ctrl+R restart the current game,	only works in single player mode

       Ctrl+Q quit the current game, only works	in single player mode

       Ctrl+C quit

       Ctrl+C Ctrl+C Ctrl+C
	      quit immediately

DASHBOARD
       At the bottom of	the screen, the	plane's	dashboard is shown. This  con-
       sists of	several	components:

       Score  Your  current score, which is accumulated	from the enemy targets
	      and planes you have successfully destroyed. In  multiplayer  two
	      scores  are  shown,  so  that  both players can see each others'
	      scores.

       Lives (Cyan)
	      Number of	lives remaining. You have five lives.

       Fuel (Cyan)
	      Amount of	fuel remaining in your	aircraft.  Once	 this  becomes
	      empty,  you  need	to return to your home base to refuel, or your
	      plane will crash.

       Bombs (Magenta)
	      Number of	bombs remaining. You  can  carry  a  maximum  of  five
	      bombs.  Once  you	 have  dropped all of them, you	must return to
	      your home	base to	get more.

       Bullets (White)
	      Number of	bullets	left for your machine gun. Once	you have  used
	      up  all your ammunition, you mut return to your home base	to get
	      more.

       Map    Shows the	contents of the	level. Cyan and	magenta	dots  indicate
	      the positions of allied and enemy	planes and ground targets.

TIPS
       The following are some tips for playing the game:

             Start  off  by  playing  in  single  player  mode	before playing
	      against the computer.  This will allow you to "get the  feel  of
	      the  stick"  without  being  attacked  by	enemy planes. Practice
	      dropping bombs on	ground targets,	as this	is a key skill.

             Accelerate to maximum speed on takeoff, otherwise	you may	 stall
	      the plane.  Moving at speed is particularly important when play-
	      ing against the computer,	as you are otherwise likely to be out-
	      manuevered by the	enemy planes.

             Bombs  can  be used against planes as well as ground targets. It
	      can sometimes be easier to hit a plane with a  bomb  instead  of
	      the machine gun.

             The machine gun can be used to destroy ground targets as well as
	      planes.  This  can  save	time if	you run	out of bombs, and some
	      targets at the edges of the map are even easier to destroy  this
	      way.  Since  the	machine	gun has	a limited range, reducing your
	      speed when attacking a ground target can give you	more  time  to
	      aim  and	attack	before you have	to pull	away. But don't	reduce
	      the speed	too much or the	plane may stall.

             Computer planes will try to tail you so that they	can shoot  you
	      down. Don't allow	them to	get a clear shot. "Wiggling" the plane
	      by  repeatedly  pulling  up and down can be an effective evasive
	      maneuver.

             Firing your machine gun through a	flock of birds will cause  the
	      birds  to	disperse, and the computer planes will sometimes hit a
	      bird and crash. However, this tactic can also backfire for obvi-
	      ous reasons.

             Each computer plane has a	"territory" and	 if  you  escape  that
	      territory	they will break	off their pursuit. At the boundary be-
	      tween territories	you can	sometimes trick	two planes into	crash-
	      ing into each other.

             When  your plane is crashing, the	pull up/down keys still	have a
	      small effect on your trajectory. You can	use  this  to  try  to
	      crash your plane into a ground target.

             Hitting  the top of your screen stalls your plane. Hold down the
	      pull up key to break out of the stall before your	plane  crashes
	      into the ground.

             The  autopilot  can  make	mistakes that lead to a	crash. This is
	      particularly a risk in higher levels if you're  flying  at  very
	      high speed. To avoid crashing, make sure that you're as close as
	      possible to your home base before	hitting	the home key, and that
	      you have a clear path to the runway.

             It's possible to fly upside down,	but trying to drop bombs while
	      inverted is usually unwise.

MEDALS
       If  the	"medals" game option is	turned on, the player is rewarded with
       ribbons and medals for the following:

       Flying Ace Ribbon (cyan with a single white stripe)
	      Shooting down 5 planes

       Top Flying Ace Ribbon (cyan with	two white stripes)
	      Shooting down 25 planes (difficult!)

       Service Ribbon (cyan with white edges)
	      Three successful raids

       Perfect Ribbon (white with two magenta stripes)
	      Finishing	a level	with no	planes lost

       Competence Medal	(white medal on	a cyan ribbon)
	      Gaining 25 points	in a single flight, where 3 points are awarded
	      per plane	and 4 per building

       Ribbon of Competence (white with	magenta	stripe)
	      As above,	a second time

       Purple Heart (magenta heart on a	cyan ribbon)
	      Returning	to base	after having been damaged. This	medal  is  im-
	      possible to attain if wounded planes are turned off.

       Ribbon of Valour	(magenta with white stripe)
	      Gaining  a  certain  number  of  points for destroyed planes and
	      buildings; the points depend on whether the player  was  damaged
	      at that point in time, and how far away the destroyed object was
	      from the player's	base

       Victoria	Cross (cyan cross on a magenta ribbon)
	      As above,	but a few more points

       Medals are only awarded if you get back to base safely. For example, if
       you  destroy  some targets but then crash, or if	you shoot down a plane
       but get shot down yourself, it doesn't count.

MULTIPLAYER SERVERS
       When run	in "listen" mode with the -l command line  flag	 (see  above),
       sopwith	runs  as a server that listens for an incoming connection.  To
       make this server	available from a home Internet	connection,  you  will
       typically  have to set up a port	forward	from your Internet router. The
       port to forward is TCP port 3847. You will also need to find  out  your
       public IP address so that the other player can connect.

       Alternatively, if you have access to a *nix-based server	then it	may be
       preferable  to  run  something  like a dedicated	server that avoids the
       hassle of port forwarding and dynamic IPs. All that is needed in	 order
       to do this is to	run a TCP server that forwards connections between two
       clients.	This can be done using nc(1); for example:
	      nc -l -p 3847 -c "nc -l -p 3847"
       Developing the above command into a complete shell script for a contin-
       ually-active dedicated server is	left as	an exercise for	the reader.

WWW
       <https://fragglet.github.io/sdl-sopwith>

BUGS
             Multiplayer is currently very limited; only two player games are
	      supported.   The	original  game	allowed	up to four players per
	      game when	using the Imaginet network hardware.

             Planes fly increasingly fast at higher levels and	the game even-
	      tually becomes unplayable.

             The plane	AI (used for computer planes and  for  the  autopilot)
	      sometimes	does very stupid things.

             There is only one	level.

BUG REPORTS
       Bugs    can    be    reported	to    the    GitHub   issue   tracker:
       <https://github.com/fragglet/sdl-sopwith>

SEE ALSO
       sopwith.cfg(5),	sopwith-mission(5),  triplane(6),  airstrike(6),  piu-
       piu(1)

AUTHORS
       Originally written by David L. Clark for	BMB Compuscience
       Modern SDL port By Simon	Howard <fraggle@gmail.com>, Jesse Smith

HISTORY
       Sopwith	was  originally	 developed  by BMB Compuscience	of Canada as a
       demonstration game for their Imaginet Networking	System.	The system was
       not commercially	successful but Sopwith became a	popular	game  for  the
       IBM  PC	and compatibles. A sequel that is referred to by fans as "Sop-
       with 2" was actually a newer version rather than	a different game,  but
       included	 extra features, such as oxen and birds	(the oxen being	an in-
       joke reference to a BMB employee	who was	nicknamed "Ox").

       The original author, David L. Clark, later released "Sopwith - The Net-
       work Edition" with several extra	features  including  comical  heads-up
       "splats"	 and wounded planes; a follow-up titled	"The Author's Edition"
       contained the same features. This version of Sopwith is	based  on  the
       released	source code to the Author's Edition.

       The real	Sopwith	Camel F.1 was one of the most famous fighter planes of
       World  War  I;  Camel  pilots  shot  down 1,294 enemy aircraft over the
       course of the war, more than any	other aircraft.	 The  plane  gained  a
       reputation  for	being  agile  but difficult to fly; many novice	pilots
       crashed the plane on takeoff. The Camel was designed  and  manufactured
       by  the	Sopwith	 Aviation  Company, founded by aviation	pioneer	Thomas
       Sopwith;	5,490 aircraft were produced. In popular culture the Camel  is
       known for being the biplane flown by the	protagonist in the Biggles se-
       ries of novels, and by Snoopy in	the Peanuts comic strip.

COPYRIGHT
       Copyright (C) 1984, 1985, 1987 BMB Compuscience Inc.
       Copyright (C) 1984-2000 David L.	Clark
       Copyright (C) 2001-2024 Simon Howard, Jesse Smith

       This program is free software; you can redistribute it and/or modify it
       under  the  terms of the	GNU General Public License as published	by the
       Free Software Foundation; either	version	2 of the License, or (at  your
       option) any later version.

       This  program  is  distributed  in the hope that	it will	be useful, but
       WITHOUT ANY  WARRANTY;  without	even  the  implied  warranty  of  MER-
       CHANTABILITY  or	 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
       Public License for more details.

								    sopwith(6)

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