mark1

superjustin.rb

require 'pry'

class SuperJustin < RTanque::Bot::Brain
  include RTanque::Bot::BrainHelper

  NAME = 'superjustin'
  TURRET_FIRE_RANGE = RTanque::Heading::ONE_DEGREE * 15.0
  WALL_DETECTION_DISTANCE = 50

  def tick!
    # binding.pry
    check_hit!

    if (target = get_nearest_target)
      fire_on(target)
    else
      seek_target
    end

    command.speed = RTanque::Bot::MAX_SPEED*rand

    change_angle = heading_toward_nearest_wall?
    if change_angle
      @target_heading = sensors.heading + MAX_BOT_ROTATION
    end
    command.heading = @target_heading
  end

  def heading_toward_nearest_wall?
    heading_toward_wall?(closest_wall)
  end

  HEADINGS = [:west, :east, :north, :south]

  def heading_toward_wall?(direction)
    heading = sensors.heading.to_degrees
    case direction
    when :north
      heading >= 260 || heading < 100
    when :east
     heading >= 350 || heading < 190
    when :south
      heading >= 80 && heading < 280
    when :west
      heading >= 170 || heading < 10
    end
  end

  def closest_wall
    distances = [sensors.position.x, sensors.position.arena.width - sensors.position.x, sensors.position.arena.height - sensors.position.y, sensors.position.y]
    index = distances.index(distances.min)
    HEADINGS[index]
  end

  def seek_target
    command.radar_heading = sensors.radar_heading + MAX_RADAR_ROTATION
    command.turret_heading = sensors.radar_heading
  end

  def get_nearest_target
    reflections = sensors.radar
    reflections = reflections.reject{|r| r.name == NAME } unless @friendly_fire
    target = reflections.sort_by{|r| r.distance }.first
    command.radar_heading = sensors.radar_heading + MAX_RADAR_ROTATION
    target
  end

  def check_hit!

    @hit_check = (@last_health && @last_health != sensors.health).tap do |h|
    end
    @last_health = sensors.health
    command.radar_heading = sensors.radar_heading - MAX_RADAR_ROTATION
  end

  def hit?
    @hit_check
  end

  def fire_on(reflection)
    command.radar_heading = reflection.heading
    command.turret_heading = @turret_heading || reflection.heading
    # credits to Seek&Destroy
    if (reflection.heading.delta(sensors.turret_heading)).abs < TURRET_FIRE_RANGE
      command.fire(reflection.distance > 200 ? MAX_FIRE_POWER : MIN_FIRE_POWER)
    end
    command.radar_heading = sensors.heading + MAX_BOT_ROTATION
  end
end