mirror of https://github.com/dirtbags/tanks.git
73 lines
2.7 KiB
Markdown
73 lines
2.7 KiB
Markdown
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# Tanks Introduction
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Tanks is a game in which you pit your coding abilities against
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other hackers. You write a program for your tank, set it out on
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the battlefield, and watch how it fares against other tanks while
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running your program.
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Each tank has a turret-mounted laser, two treads, up to ten
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sensors, and a diagnostic LED. Sensors are used to detect when
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other tanks are inside a given arc. In the examples on this page,
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"triggered" sensors turn black. Most tanks will take some action
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if a sensor is triggered, such as changing speed of the treads,
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turning the turret, or firing.
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Tanks are programmed in Forf, a stack-based language similar to
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PostScript. Please read the [Forf manual](forf.md) to learn more
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about forf, and the [Tanks procedure reference](procs.html) for a
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description of Tanks extensions.
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## Quick Start for the Impatient
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To get started, head over to the designer for your game,
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and use the following example tank. This tank will
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move around, turn the turret, and fire if there's something in
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front of it.
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Sensor 0: 50 0 7 ☑
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Sensor 1: 30 0 90 ☐
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get-turret 12 + set-turret! ( Rotate turret )
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37 40 set-speed! ( Go in circles )
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0 sensor? { fire! } if ( Fire if turret sensor triggered )
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1 sensor? { -50 50 set-speed! } if ( Turn if collision sensor triggered )
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Obviously, this tank could be improved.
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Watch other tanks in your game to get ideas about how to improve yours.
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Don't forget the [Forf manual](forf.md) and the
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[Tank procedure reference](procs.html).
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## Tank Specifications
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Your PF-255 autonomous tank is built to the exacting
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specifications sent to our factory in New Khavistan. All
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distances are in meters, angles in degrees.
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Tank size
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: The targettable area of the tank—the part which can be hit by a cannon—is a circle about 7½ meters in radius.
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Speed
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: Each tread can have a speed between -100 and 100. This is in
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percentage of total speed for that tread, where total speed is
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roughly 7 meters per turn.
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Sensors
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: Each sensor has a maximum range of 100 meters. Of course, you
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don't have to use the full range. Sensors may be attached to
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the turret (they turn along with the turret), or left fixed to
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the tank.
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Turret
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: Turret angle can be set between -359° and 359°, with 0° directly
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in front of the tank. Be aware that it takes time for the
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turret to swing around: the turret can swing about 45° per turn.
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Cannon range and recharging
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: When the cannon is fired, it obliterates everything for 50
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meters in front of it. It takes around 20 turns for your cannon
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to recharge after it's been fired, so only shoot when you feel
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like you're going to hit something.
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Good luck blowing everybody up!
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