Ok, i realy don't know if it will be of any help but perhaps someone gets inspired. (i will continue this if i have time but someone else could think of a frontend - start with the graphics from robocode...)
Here is my first approach ... very unfinished, more like an idea than the real thing:
(for now, there is a stupid robot running in circles shooting nonestisting bullets in every direction - there is plenty of room for improvements 
)
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$stdout.sync = true
class Numeric
def to_rad
self / 180.0 * Math::PI
end
end
module Battlefield
HEIGHT = 1600
WIDTH = 1600
end
module Robot
#the height of the battlefield
attr_reader :battlefield_height
#the width of the battlefield
attr_reader :battlefield_width
#your remaining energy (if this drops below 0 you are dead)
attr_reader :energy
#the heading of your gun, 0 pointing east, 90 pointing north, 180 pointing west, 270 pointing south
attr_reader :gun_heading
#your gun heat, if this is above 0 you can't shoot
attr_reader :gun_heat
#your robots heading, 0 pointing east, 90 pointing north, 180 pointing west, 270 pointing south
attr_reader :heading
#your robots radius, if x <= size you hit the left wall
attr_reader :size
#the heading of your radar, 0 pointing east, 90 pointing north, 180 pointing west, 270 pointing south
attr_reader :radar_heading
#ticks since match start
attr_reader :time
#your velocity (-8/8)
attr_reader :velocity
#your x coordinate, 0...battlefield_width
attr_reader :x
#your y coordinate, 0...battlefield_height
attr_reader :y
#accelerate (max speed is 8, max accelerate is 1/-1, negativ speed means moving backwards)
def accelerate param
@actions[:accelerate] = param
end
#accelerates negativ if moving forward (and vice versa), may take 8 ticks to stop (and you have to call it every tick)
def stop
@actions[:accelerate] = (velocity > 0) ? -1 : ((velocity < 0) ? 1 :0)
end
#fires a bullet in the direction of your gun, power is 0.1 - 3, this power is taken from your energy
def fire power
@actions[:fire] = power
end
#turns the robot (and the gun and the radar), max 10 degrees per tick
def turn degrees
@actions[:turn] = degrees
end
#turns the gun (and the radar), max 30 degrees per tick
def turn_gun degrees
@actions[:turn_gun] = degrees
end
#turns the radar, max 60 degrees per tick
def turn_radar degrees
@actions[:turn_radar] = degrees
end
private
def initialize bf_height, bf_width
@battlefield_height = bf_height
@battlefield_width = bf_width
@x = (rand * bf_width).to_i
@y = (rand * bf_height).to_i
@gun_heat = 3
@heading = (rand * 360).to_i
@gun_heading = @heading
@radar_heading = @heading
@time = 0
@velocity = 0
@energy = 100
@events = Hash.new{[]}
@@robots ||= []
@@robots << self
end
def Robot.robots
@@robots
end
def internal_tick
@actions = Hash.new(0)
tick @events
@actions[:fire] = 3 if @actions[:fire] > 3
@actions[:fire] = 0 if @actions[:fire] < 0
@actions[:turn] = 10 if @actions[:turn] > 10
@actions[:turn] = -10 if @actions[:turn] < -10
@actions[:turn_gun] = 30 if @actions[:turn_gun] > 30
@actions[:turn_gun] = -30 if @actions[:turn_gun] < -30
@actions[:turn_radar] = 60 if @actions[:turn_radar] > 60
@actions[:turn_radar] = -60 if @actions[:turn_radar] < -60
@actions[:accelerate] = 1 if @actions[:accelerate] > 1
@actions[:accelerate] = -1 if @actions[:accelerate] > -1
old_radar_heading = @radar_heading
@heading += @actions[:turn]
@gun_heading += @actions[:turn] + @actions[:turn_radar]
@radar_heading += @actions[:turn] + @actions[:turn_radar] + @actions[:turn_radar]
@velocity += @actions[:accelerate]
@velocity = 8 if @velocity > 8
@velocity = -8 if @velocity < -8
@x += Math::cos(@heading.to_rad) * @velocity
@y -= Math::sin(@heading.to_rad) * @velocity
@@robots.each do |other|
if other != self
#if old_radar_heading < angle_to_other < @radar_heading
# @events['robot_scanned'] << [angle_to_other, distance_to_other]
#end
end
end
@time += 1
end
end
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# robot code (will be dynamicaly required)
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class MyRobot
include Robot
def tick events
accelerate 1
turn 5
fire 3
end
end
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# arena
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w, h = Battlefield::WIDTH, Battlefield::HEIGHT
robot1 = MyRobot.new w, h
#robot2 = MyRobot.new w, h
loop do
Robot.robots.each do |robot|
robot.send :internal_tick
if robot.energy < 0
puts "robot died"
break
end
puts robot.x.to_i.to_s + ', ' + robot.y.to_i.to_s
end
sleep 0.1
end
)