#----TITLE-------------------------------------------------------------------#
# A simple script to trigger events based on circular proximity from
#   the player.
#                   Disclaimer? Give credit where credit is due      
#-------------------------Code by: Vlue L.

#----USE---------------------------------------------------------------------#
# Used by inserting a conditional branch script call from within any event
#  (Usually one running by parallel process) or however you want
# Script call: Proxy.inprox?(@event_id, distance)
#                      -or-
#              Proxy.inprox?(nil, distance, x, y)
#
#              $PROXYRANGE = distance
#   where:
#   -> "@event_id" is equal to the id of the event if not called from
#        within the event itself or nil if being called for a set position
#   -> "distance" is equal to the radius of the proximity range
#   -> "x" and "y" are equal to the location for proximity if being called
#        for a set position
#-----------------------------------#

#----EXAMPLE-----------------------------------------------------------------#
#  Based on call within specific event with default range:
#            Proxy.inprox?(@event_id)
#  Based on a radius of 5, called within the specific event:
#            Proxy.inprox?(@event_id, 3)
#  Based on a radius of 3 called from Common Event or similar for Event 0003:
#            Proxy.inprox?(3, 3)
#  Based on a radius of 2 for specific point (7, 8) on map:
#            Proxy.inprox?(nil, 2, 7, 8)
#-----------------------------------#

#Default radius of detection:
$PROXYRANGE = 3
#----#

class Proxy
  def self.inprox?(id, distance = $PROXYRANGE, x = 0, y = 0)
    if id != nil
      x = $game_map.events[id].x
      y = $game_map.events[id].y
    end
    iter = x + distance + 1 #find max iterations
    iter2 = 0
    half = x
    x = x - distance
    while x < iter
      ylow = y - iter2  #<>Define range
      yhigh = y + iter2
      if $game_player.x == x and $game_player.y >= ylow and $game_player.y <= yhigh
        return true
      end
      x += 1 #change x iteration
      if x > half then iter2 -= 1 else iter2 += 1 end #change y iteration
    end
    return false
  end
end