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README.rdoc

RRobots

RRobots is a simulation environment for robots, these robots have a scanner and a gun, can move forward and backwards and are entirely controlled by ruby scripts.

Example script

require 'robot'

class NervousDuck include Robot

def tick events turn_radar 1 if time == 0 turn_gun 30 if time < 3 accelerate 1 turn 2 fire 3 unless events['robot_scanned'].empty? end end

All you need to implement is the tick method which should accept a hash of events that occurred during the last tick.

The following methods are available to your bot:

battlefield_height  #the height of the battlefield
battlefield_width   #the width of the battlefield
energy              #your remaining energy (if this drops below 0 you are dead)
gun_heading         #the heading of your gun, 0 pointing east, 90 pointing 
                    #north, 180 pointing west, 270 pointing south
gun_heat            #your gun heat, if this is above 0 you can't shoot
heading             #your robots heading, 0 pointing east, 90 pointing north,
                    #180 pointing west, 270 pointing south
size                #your robots radius, if x <= size you hit the left wall
radar_heading       #the heading of your radar, 0 pointing east, 
                    #90 pointing north, 180 pointing west, 270 pointing south
time                #ticks since match start
speed               #your speed (-8/8)
x                   #your x coordinate, 0...battlefield_width
y                   #your y coordinate, 0...battlefield_height
accelerate(param)   #accelerate (max speed is 8, max accelerate is 1/-1, 
                    #negativ speed means moving backwards)
stop                #accelerates negativ if moving forward (and vice versa), 
                    #may take 8 ticks to stop (and you have to call it every tick)
fire(power)         #fires a bullet in the direction of your gun, 
                    #power is 0.1 - 3, this power will heat your gun
turn(degrees)       #turns the robot (and the gun and the radar), 
                    #max 10 degrees per tick
turn_gun(degrees)   #turns the gun (and the radar), max 30 degrees per tick
turn_radar(degrees) #turns the radar, max 60 degrees per tick
dead                #true if you are dead
say(msg)            #shows msg above the robot on screen
broadcast(msg)      #broadcasts msg to all bots (they recieve 'broadcasts'
                    #events with the msg and rough direction)

These methods are intentionally of very basic nature, you are free to unleash the whole power of ruby to create higher level functions. (e.g. move_to, fire_at and so on)

Some words of explanation: The gun is mounted on the body, if you turn the body the gun will follow. In a simmilar way the radar is mounted on the gun. The radar scans everything it sweeps over in a single tick (100 degrees if you turn your body, gun and radar in the same direction) but will report only the distance of scanned robots, not the angle. If you want more precission you have to turn your radar slower.

RRobots is implemented in pure ruby using a tk ui and should run on all platforms that have ruby and tk. (until now it's tested on windows, OS X and several linux distributions)

Usage

To start a match call:

ruby rrobots.rb [resolution] [#match] [-nogui] [-speed=<N>] [-timeout=<N>]

<FirstRobotClassName[.rb]> <SecondRobotClassName[.rb]> <...>

[resolution] (optional) should be of the form 640x480 or 800*600. 
  default is 800x800
[match] (optional) to replay a match, put the match# here, including 
  the #sign.
[-nogui] (optional) run the match without the gui, for highest possible 
  speed.(ignores speed value if present)
[-speed=<N>] (optional, defaults to 1) updates GUI after every N ticks.  
  The higher the N, the faster the match will play.
[-timeout=<N>] (optional, default 50000) number of ticks a match will 
  last at most.

the names of the rb files have to match the class names of the robots
(up to 8 robots)
e.g. 'ruby rrobots.rb SittingDuck NervousDuck'
or 'ruby rrobots.rb 600x600 #1234567890 SittingDuck NervousDuck'

If you want to run a tournament call:

ruby tournament.rb [-timeout=<N>] [-matches=<N>]

    (-dir=<Directory> | <RobotClassName[.rb]>+)

[-timeout=<N>] (optional, default 10000) number of ticks a match 
  will last at most.
[-matches=<N>] (optional, default 2) how many times each robot 
  fights every other robot.
-dir=<Directory> All .rb files from that directory will be 
  matched against each other.

the names of the rb files have to match the class names of the robots.

Each robot is matched against each other 1on1. The results are available as yaml or html files.

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