.\" Copyright (c) 2009, Charles McGarvey
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-.hy
.TH YOINK 6 "July 24, 2009"
.SH NAME
Yoink \- An alien-smashing action game.
.SH SYNOPSIS
.B yoink [-h|--help] [-i|--info] [OPTION=VALUE]...
-.br
.SH DESCRIPTION
-.PP
Leap tall buildings! Crush stupid robots beneath your feet! Wield your
extra-terrestrial powers in the defence of humanity, and send those alien
invaders back from whence they came! This is Yoink.
-.PP
-You play the part of a flying alien heroine who must defend her home on Earth
-from other airborne alien invaders. The game draws inspiration from classic
-arcade games like Joust, Bombjack, Rampage, and Defender--simple, fast-moving
-action. Basic arguments include:
+
+You play the part of a flying alien heroine who must defend her home on
+Earth from other airborne alien invaders. The game draws inspiration from
+classic arcade games like Joust, Bombjack, Rampage, and Defender--simple,
+fast-moving action. Basic arguments include:
.TP
.B -h, --help
Display basic usage information, and exit immediately.
.TP
.B -i, --info
Display build and environment details, and exit immediately.
-.br
.SH TIPS
-.PP
To attack, you must dive on the enemy at high speed. If you're going too
slowly, you'll just drift harmlessly by. Diving from above gives different
-results from swooping in and hitting them from the side. If you're too close to
-attack, try to build up speed by running away and bouncing off a nearby
-building!
-.PP
-By charging your special alien powers, you can throw fireballs. The orange bar
-at the top of the screen represents your power level--at maximum, you can
-destroy almost anything. Aiming can be tricky, but with a little practice it's
-quite easy to launch them in the right direction. Try doing a little swoop or
-circle in the air to line yourself up before releasing your fireball.
-.PP
+results from swooping in and hitting them from the side. If you're too
+close to attack, try to build up speed by running away and bouncing off a
+nearby building!
+
+By charging your special alien powers, you can throw fireballs. The orange
+bar at the top of the screen represents your power level--at maximum, you
+can destroy almost anything. Aiming can be tricky, but with a little
+practice it's quite easy to launch them in the right direction. Try doing
+a little swoop or circle in the air to line yourself up before releasing
+your fireball.
+
The heroine has limited energy, measured by the blue bar at the top of the
screen. When it runs out, it's game over! She can regain lost energy by
picking up bonuses dropped by enemies.
-.PP
-To complete the current attack wave, you must destroy all the enemies. Hunt
-around, especially in the sky, if you can't find the last few.
-.br
+
+To complete the current attack wave, you must destroy all the enemies.
+Hunt around, especially in the sky, if you can't find the last few.
.SH OPTIONS
-.PP
-Options are set from config files and command-line arguments. A
-.B yoink
-configfile ("yoinkrc") consists of key-value pairs. They are loaded in this
-order:
+You have a certain level of control over the operation of \fByoink\fP
+through options passed as program arguments or given in config files.
+\fByoink\fP looks for config files in several locations and in this order:
.TP
-1. @DATADIR@/yoinkrc
-This is the base config file which should be considered read-only. Look to this
-file as an example of the format used for config files.
+1. \fI@DATADIR@/yoinkrc\fP
+This is the base config file which should be considered read-only. Look to
+this file as an example of the format used for config files.
.TP
-2. /etc/yoinkrc
-This is the system-wide config file. Not available on Windows.
+2. \fI/etc/yoinkrc\fP
+This is the system-wide config file.
.TP
-3. $HOME/.yoinkrc
+3. \fI$HOME/.yoinkrc\fP
This is your own personal config file.
.TP
-4. $YOINKRC
-This is an optional environment variable you can set to the path of a config
-file at a non-standard location.
+4. \fI$YOINKRC\fP
+This is an optional environment variable you can set to the path of a
+config file at a non-standard location. See the \fBENVIRONMENT\fP section
+below for more information.
.PP
As usual, options that are passed as arguments take precedence over options
-loaded from the config file(s). Here is a list of some of the options available
-at your disposal:
+loaded from any config file. Here is a list of some of the options
+available at your disposal:
.TP
.B detail
-The level of detail. Possible values are 1, 2, or 3 where 1 means the least
-amount of detail and 3 means the most. This effects the number of objects drawn
-to the screen. A high level of detail will draw everything but could cause poor
-frame rates if the graphics driver can't keep up with the load. Lower levels
-will omit certain details which aren't crucial for playing the game with the
-possible benefit of higher frame rates. See the Notes for more ways to increase
-the game's performance. The default value is 3.
+The level of detail. Possible values are 1, 2, or 3 where 1 means the
+least amount of detail and 3 means the most. This effects the number of
+objects drawn to the screen. A high level of detail will draw everything
+but could cause poor frame rates if the graphics driver can't keep up with
+the load. Lower levels will omit certain details which aren't crucial for
+playing the game with the possible benefit of higher frame rates. See the
+Notes for more ways to increase the game's performance. The default value
+is 3.
.TP
.B doublebuffer
-If true, double-buffering will be used to help minimize distortion and artifacts
-caused by the animation of the game. Otherwise, a single buffer will be used.
-The default value is true.
+If true, double-buffering will be used to help minimize distortion and
+artifacts caused by the animation of the game. Otherwise, a single buffer
+will be used. The default value is true.
.TP
.B fullscreen
-If true, the window will capture the display and render the game in full screen
-splendor. A value of false means the game will run in a window. The default
-value is false.
+If true, the window will capture the display and render the game in full
+screen splendor. A value of false means the game will run in a window.
+The default value is false.
.TP
.B maxfps
-The maximum number of frames to be drawn per second. If your computer is really
-old, you can get away with decreasing this value and still have reasonably
-smooth animation. You can set this to a very high number to effectively render
-as many frames as is possible, but the actual rate could be limited by vertical
-display synchronization, depending on the X11 driver and settings used. You
-should not set this option higher than the point where the vertical
-synchronization effectively limits the draw rate or else the game may not be
-able to update the physics on schedule which could actually significantly lower
-the quality of the animation. The default value is 40.
+The maximum number of frames to be drawn per second. If your computer is
+really old, you can get away with decreasing this value and still have
+reasonably smooth animation. You can set this to a very high number to
+effectively render as many frames as is possible, but the actual rate could
+be limited by vertical display synchronization, depending on the X11 driver
+and settings used. You should not set this option higher than the point
+where the vertical synchronization effectively limits the draw rate or else
+the game may not be able to update the physics on schedule which could
+actually significantly lower the quality of the animation. The default
+value is 40.
.TP
.B printfps
-If true, the current number of frames being drawn per second will be printed to
-the console. The default value is false.
+If true, the current number of frames being drawn per second will be
+printed to the console. The default value is false.
.TP
.B resizable
-If true, the window will be resizable by the window manager. This option is
-meaningless if the game is drawing to the full screen. The default option is
-true.
-.TP
-.B showcursor
-This option effects the visibility of the cursor while it is "hovering" over the
-display. If the value is true, the cursor will be visible. Otherwise, the
-cursor will be hidden. The default value is true.
+If true, the window will be resizable by the window manager. This option
+is meaningless if the game is drawing to the full screen. The default
+option is true.
.TP
.B timestep
-The number of times per second the simulation state will be updated. A value
-of 100 or higher is ideal for a better physical simulation. Values that are
-much lower cause the CPU to do less work, but accuracy will suffer. Errors
-could be introduced in the game with extremely low values. The default value
-is 80.
+The number of times per second the simulation state will be updated. A
+value of 100 or higher is ideal for a better physical simulation. Values
+that are much lower cause the CPU to do less work, but accuracy will
+suffer. Errors could be introduced in the game with extremely low values.
+The default value is 80.
.TP
.B videomode
-The resolution or size of the window. The value is an array with three number
-elements representing the width, height, and bits per pixel that make up the
-video mode. The third number is optional. The default value is {800,600}. You
-may need to escape the curly braces so the shell doesn't parse them.
-.PP
-This is only a list of the more useful options. You'll have to use the source
-to find out about the more esoteric options, but you probably won't need to.
-.br
+The resolution or size of the window. The value is an array with three
+number elements representing the width, height, and bits per pixel that
+make up the video mode. The third number is optional. The default value
+is {800,600}. If passing on the command-line, you may need to escape the
+curly braces so the shell doesn't parse them.
+.PP
+This is only a list of the more useful options. You'll have to use the
+source to find out about the more esoteric options, but you probably won't
+need to.
.SH EXAMPLES
-.PP
Here are some examples of typical usage:
-.PP
-.TP
-yoink fullscreen=true
-Run Yoink in full-screen mode.
.TP
-yoink maxfps=60
+$ yoink maxfps=60
Cap the allowable frame-rate to 60Hz.
.TP
-yoink videomode=\\{1024,768\\}
-Run yoink with a resultion of 1024x768. Notice the escapes for the curly
-braces so the shell doesn't parse them.
+$ yoink fullscreen=true
+Run \fByoink\fP in full-screen mode.
+.TP
+$ yoink videomode=\\{1024,768\\}
+Run \fByoink\fP with a resolution of 1024x768. Notice the escapes for the
+curly braces so the shell doesn't parse them.
.SH ENVIRONMENT
-.PP
-.B yoink
-responds to some variables in the environment:
+\fByoink\fP responds to some variables in the environment:
.TP
-HOME
+.I HOME
If set to a path of a valid directory (presumably a user's home directory),
-.B yoink
-will look for a file at
-.I $HOME/.yoinkrc
-and load it as a config file.
-.TP
-USER
-.B yoink
-uses this variable to guess the user's nickname, for a high score entry or
-whatever.
-.TP
-YOINK_DATADIR
-If set to a path of a valid directory,
-.B yoink
-will look in this directory first when it is loading game assets. Set this
-variable if you move the game's assets to another directory or perhaps want to
-load your own custom assets rather than the defaults.
-.TP
-YOINKRC
-If set to a path of a valid config file,
-.B yoink
-will load the options from that file, and those options will take precedence
-over options loaded from other config files.
-.br
+\fByoink\fP will look for a file at \fI$HOME/.yoinkrc\fP and load it as a
+config file.
+.TP
+.I USER
+\fByoink\fP uses this variable to guess the user's nickname, for a high
+score entry or whatever.
+.TP
+.I YOINK_DATADIR
+If set to a path of a valid directory, \fByoink\fP will look in this
+directory first when it is loading game assets. Set this variable if you
+move the game's assets to another directory or perhaps want to load your
+own custom assets rather than the defaults.
+.TP
+.I YOINKRC
+If set to a path of a valid config file, \fByoink\fP will load the options
+from that file, and those options will take precedence over options loaded
+from other config files.
.SH NOTES
-.PP
-Yoink may or may not be playable with acceptable frame rates without a hardware
-accelerated OpenGL driver installed and working, depending on how fast your CPU
-is. Yoink is really not all that heavy on graphics, but it doesn't take much to
-overload a software implementation. If you're stuck without hardware
-acceleration, there are some things you can do to get better frame rates, in
-order of effectiveness:
+\fByoink\fP may or may not be playable with acceptable frame rates without
+a hardware accelerated GL driver installed and working, depending on how
+fast your CPU is. \fByoink\fP is really not all that heavy on graphics,
+but it doesn't take much to overload a software implementation. You should
+first check the documentation provided by your OS provider to see how to
+enable direct rendering. If you're really stuck without hardware
+acceleration, there are some things you can do to get marginally better
+frame rates:
.TP
1. Decrease the resolution.
-Use the
-.I videomode
-option or just resize the window if the
-.I fullscreen
-option is false and the
-.I resizable
-option is true. This speeds up software renderers considerably.
-.TP
-2. Decrease the timestep.
-Use the
-.I timestep
-option. You can set the timestep to be as low as the your
-.I maxfps
-option, but it is not recommended to set this lower than the target frame rate.
-Remember the trade-off here is decreased simulation accuracy. Try to set your
-maxfps to 30Hz and your timestep to 60Hz:
-.PP
-yoink maxfps=30 timestep=60
-.TP
-3. Decrease the level of rendering detail.
-Use the
-.I detail
-option. The game world may look sparse or incomplete, but that may be better
-than choppy animation.
-.br
+Use the \fBvideomode\fP option or just resize the window if the
+\fBfullscreen\fP option is false and the \fBresizable\fP option is true.
+This can speed up a software renderer considerably.
+.TP
+2. Decrease the level of rendering detail.
+Use the \fBdetail\fP option. The game world may look sparse or incomplete,
+but that's probably better than choppy animation.
+.TP
+3. Decrease the timestep.
+You can set the \fBtimestep\fP to be as low as the your \fBmaxfps\fP
+option. Remember the trade-off here is decreased simulation accuracy.
.SH BUGS
-.PP
+.IP \(bu 3
+The robots are currently lacking in intelligence.
+.IP \(bu
Although the pixelated graphics are intentional, there are some unintended
artifacts which are more obvious with certain video drivers.
.PP
-The robots are not very bright.
-.PP
Send bug reports, patches, and love notes to:
-.br
+.IP
Charles McGarvey <@PACKAGE_BUGREPORT@>
.SH AUTHOR
.PP
Neil Carter was the original creator of Yoink, his winning entry in the
-uDevGames 2003 Mac game development contest. Charles McGarvey restored the game
-and is the current maintainer.
+uDevGames 2003 Mac game development contest. Charles McGarvey restored the
+game and is the current maintainer.
projects / chaz / yoink / commitdiff
