Difference between revisions of "Robot gallery"
From Bitfighter
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end | end | ||
− | + | type = item:getClassID() | |
if(type == nil) then | if(type == nil) then | ||
return nil | return nil |
Revision as of 07:39, 14 June 2009
For reference information on how these robots work, see the Programming Robots section.
IMPORTANT: In order for these bots to work with Bitfighter 011 alpha 2, you will need to update the file "robot_helper_functions.lua" in your Bitfighter install folder. Replace the file's contents with the following:
bot = LuaRobot(Robot) -- This is a reference to our bot. function getFiringSolution(item) if(item == nil) then return nil end type = item:getClassID() if(type == nil) then return nil end return bot:getFiringSolution(type, item) end function logprint(msg) bot:logprint(msg) end
OrbitBot
------------------------------------------------------------------------------- ------------------------------------------------------------------------------- -- -- 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 -- -- Works with Bitfighter 011 alpha 2 -- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- -- This is called by the robot's idle routine each tick. -- This function must be present for the robot to work! function getMove() local loc = bot:getLoc() local items = bot:findGlobalItems(TestItemType) -- Find a TestItem local minDist = 999999 local closestItem = nil local found = false for indx, item in ipairs(items) do -- Iterate over our list -- Use distSquared because it is less computationally expensive -- and works great for comparing distances local d = loc:distSquared(item:getLoc()) -- Dist btwn robot and item if(d < minDist) then -- Is it the closest yet? closestItem = item minDist = d end end -- closestItem will be nil if the bot can't find any. This may happen -- if the level has no TestItems, or if they are beyond the robot's -- range to know about them. if(closestItem == nil) then return end local botLoc = bot:getLoc() local itemLoc = closestItem:getLoc() 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 dest = itemLoc dest:setxy(itemLoc:x() + orbitRadius * math.cos(orbitAng), itemLoc:y() + orbitRadius * math.sin(orbitAng)) else dest = itemLoc orbitAng = botLoc:angleTo(dest) end bot:setThrustToPt(dest) -- travel towards calculated point bot:setAngle(botLoc:angleTo(itemLoc)) 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 -- Other initialization code logprint("Hello, I'm " .. getName()) -- Print a message to the game log orbitRadius = 300 -- How far from object will we orbit? orbitAng = 0