Difference between revisions of "Robot gallery"

From Bitfighter
(New page: =Coming soon... A gallery of working bots!=)
 
(Added more instructions)
 
(15 intermediate revisions by 8 users not shown)
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=Coming soon... A gallery of working bots!=
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For reference information on how these robots work, see the [[Programming_robots|Programming Robots]] section.
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<source lang="lua">
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
 +
--
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-- OrbitBot, a simple robot that finds the nearest TestItem and orbits it
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-- Note that this relies on line-of-sight navigation, so only good for open levels
 +
--
 +
-- !!! WILL ONLY WORK WITH RELEASE VERSION OF BITFIGHTER 011 AND ABOVE !!!
 +
--
 +
-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-- This is called by the robot's idle routine each tick.
 +
-- This function must be present for the robot to work!
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function getMove()
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    if(targetItem == nil) then
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        targetItem = findClosest(bot:findGlobalItems(TestItemType))
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    end
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    if(targetItem == nil) then return end
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    local botLoc = bot:getLoc()
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    local itemLoc = targetItem:getLoc()
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    local dist = botLoc:distanceTo( itemLoc )
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    -- Here we use the getTime() function to make the motion look smooth.
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    -- If we just advanced orbitAng by a fixed amount each frame, it would
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    -- appear jerky, as each frame is a slightly different length.
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    -- .0015 determined experimentally
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    orbitAng = orbitAng + .0015 * bot:getTime()
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    local dest
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    if( dist <= orbitRadius * 1.1 ) then    -- Close enough to enter orbit
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        dest = itemLoc
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        dest:setxy( itemLoc:x() + orbitRadius * math.cos (orbitAng),
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                    itemLoc:y() + orbitRadius * math.sin (orbitAng)  )
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        if( not isInOrbit ) then
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            orbitAng = botLoc:angleTo( dest ) - math.pi / 2
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        end   
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        isInOrbit = true
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    else                                    -- Travel directly toward object
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        dest = itemLoc
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        orbitAng = botLoc:angleTo( dest )
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        isInOrbit = false
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    end
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    bot:setThrustToPt( dest )                  -- Travel towards calculated point
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    bot:setAngle( botLoc:angleTo( itemLoc ) )  -- Aim ship that way too
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end
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-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
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-- This function is called once and should return the robot's name
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function getName()
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    return( "OrbitBot" )
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end
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-------------------------------------------------------------------------------
 +
-- Setup code here: this is run once when the robot is initialized, and
 +
-- any variables set here will persist throughout the robot's life.  These
 +
-- variables can be accessed from various functions defined in this file.
 +
-------------------------------------------------------------------------------
 +
-- Global variables must be declared here before they can be used elsewhere
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orbitAng = 0
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orbitRadius = 300
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isInOrbit = false
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targetItem = nil
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</source>
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 +
You can use the above bot with the following level file.  Copy the robot code into a file called "orbitbot.bot" in your robots folder, then copy the following code into a file called "orbitbotdemo.level" in your levels file.  The Robot line in the level file tells Bitfighter to load a robot called orbitbot.bot from the robots folder, and assign it to Team 1.
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When you play the level, you should see a functional orbitbot!
 +
 
 +
<source lang="levelcode">
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GameType 10 10
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LevelName OrbitBot Home
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LevelDescription Robot demo level
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LevelCredits
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Robot 1 orbitbot.bot
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GridSize 255
 +
MinPlayers 0
 +
MaxPlayers 0
 +
Team Blue 0 0 1
 +
Team Red 1 0 0
 +
BarrierMaker 50 1 -2  1 6  9 6  9 -2  1 -2
 +
Spawn 0 3 2
 +
Spawn 1 7 2
 +
TestItem 5 2
 +
</source>

Latest revision as of 18:38, 12 February 2010

For reference information on how these robots work, see the Programming Robots section. 


-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
--
-- OrbitBot, a simple robot that finds the nearest TestItem and orbits it
-- Note that this relies on line-of-sight navigation, so only good for open levels
--
-- !!! WILL ONLY WORK WITH RELEASE VERSION OF BITFIGHTER 011 AND ABOVE !!!
--
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- This is called by the robot's idle routine each tick.
-- This function must be present for the robot to work!
 
function getMove()
 
    if(targetItem == nil) then
        targetItem = findClosest(bot:findGlobalItems(TestItemType))
    end
 
    if(targetItem == nil) then return end
 
 
    local botLoc = bot:getLoc()
    local itemLoc = targetItem:getLoc()
 
    local dist = botLoc:distanceTo( itemLoc )
 
    -- Here we use the getTime() function to make the motion look smooth.
    -- If we just advanced orbitAng by a fixed amount each frame, it would
    -- appear jerky, as each frame is a slightly different length.
 
    -- .0015 determined experimentally
    orbitAng = orbitAng + .0015 * bot:getTime()
 
 
    local dest
 
    if( dist <= orbitRadius * 1.1 ) then    -- Close enough to enter orbit
        dest = itemLoc
        dest:setxy( itemLoc:x() + orbitRadius * math.cos (orbitAng),
                    itemLoc:y() + orbitRadius * math.sin (orbitAng)  )
        if( not isInOrbit ) then
            orbitAng = botLoc:angleTo( dest ) - math.pi / 2
        end    
 
        isInOrbit = true
 
    else                                    -- Travel directly toward object
        dest = itemLoc
        orbitAng = botLoc:angleTo( dest )
        isInOrbit = false
    end
 
    bot:setThrustToPt( dest )                  -- Travel towards calculated point
    bot:setAngle( botLoc:angleTo( itemLoc ) )  -- Aim ship that way too
end
 
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- This function is called once and should return the robot's name
 
function getName()
    return( "OrbitBot" )
end
 
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
-- Setup code here: this is run once when the robot is initialized, and
-- any variables set here will persist throughout the robot's life.  These
-- variables can be accessed from various functions defined in this file.
-------------------------------------------------------------------------------
-- Global variables must be declared here before they can be used elsewhere
orbitAng = 0
orbitRadius = 300
isInOrbit = false
targetItem = nil

You can use the above bot with the following level file. Copy the robot code into a file called "orbitbot.bot" in your robots folder, then copy the following code into a file called "orbitbotdemo.level" in your levels file. The Robot line in the level file tells Bitfighter to load a robot called orbitbot.bot from the robots folder, and assign it to Team 1.

When you play the level, you should see a functional orbitbot!

Invalid language.

You need to specify a language like this: <source lang="html4strict">...</source>

Supported languages for syntax highlighting:

4cs, 6502acme, 6502kickass, 6502tasm, 68000devpac, abap, actionscript, actionscript3, ada, algol68, apache, applescript, apt_sources, arm, asm, asp, asymptote, autoconf, autohotkey, autoit, avisynth, awk, bascomavr, bash, basic4gl, bf, bibtex, blitzbasic, bnf, boo, c, c_loadrunner, c_mac, caddcl, cadlisp, cfdg, cfm, chaiscript, cil, clojure, cmake, cobol, coffeescript, cpp, cpp-qt, csharp, css, cuesheet, d, dcl, dcpu16, dcs, delphi, diff, div, dos, dot, e, ecmascript, eiffel, email, epc, erlang, euphoria, f1, falcon, fo, fortran, freebasic, freeswitch, fsharp, gambas, gdb, genero, genie, gettext, glsl, gml, gnuplot, go, groovy, gwbasic, haskell, haxe, hicest, hq9plus, html4strict, html5, icon, idl, ini, inno, intercal, io, j, java, java5, javascript, jquery, kixtart, klonec, klonecpp, latex, lb, ldif, lisp, llvm, locobasic, logtalk, lolcode, lotusformulas, lotusscript, lscript, lsl2, lua, m68k, magiksf, make, mapbasic, matlab, mirc, mmix, modula2, modula3, mpasm, mxml, mysql, nagios, netrexx, newlisp, nsis, oberon2, objc, objeck, ocaml, ocaml-brief, octave, oobas, oorexx, oracle11, oracle8, oxygene, oz, parasail, parigp, pascal, pcre, per, perl, perl6, pf, php, php-brief, pic16, pike, pixelbender, pli, plsql, postgresql, povray, powerbuilder, powershell, proftpd, progress, prolog, properties, providex, purebasic, pycon, pys60, python, q, qbasic, rails, rebol, reg, rexx, robots, rpmspec, rsplus, ruby, sas, scala, scheme, scilab, sdlbasic, smalltalk, smarty, spark, sparql, sql, stonescript, systemverilog, tcl, teraterm, text, thinbasic, tsql, typoscript, unicon, upc, urbi, uscript, vala, vb, vbnet, vedit, verilog, vhdl, vim, visualfoxpro, visualprolog, whitespace, whois, winbatch, xbasic, xml, xorg_conf, xpp, yaml, z80, zxbasic


GameType 10 10
LevelName OrbitBot Home
LevelDescription Robot demo level
LevelCredits
Robot 1 orbitbot.bot
GridSize 255
MinPlayers 0
MaxPlayers 0
Team Blue 0 0 1
Team Red 1 0 0
BarrierMaker 50 1 -2  1 6  9 6  9 -2  1 -2 
Spawn 0 3 2 
Spawn 1 7 2 
TestItem 5 2
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