#--------------------------------------------------------------------------
# Â Â Â Â Â Â Enemy Detection System
# Â Â Â Â Â Â by Gubid - 8/12/07
# Â Â Â Â Â Â v 1.2.2 Updated 10/2/07
#--------------------------------------------------------------------------
#Description:
#This system allows events that are named something including "ENEMY" then
#that event will be told to approach Game_Player, until Game_Player has gotten
#a specified distance away. At that time event will return to its original
#position if desired. If you happen to get close enough to the returning event
#it will begin to follow you again.
#
#Thanks to Near Fantasia for supplying the slightly modified path finding script.
#--------------------------------------------------------------------------
#if there are any questions as to the use of this script or
#modifications/additions/etc, please post it to the thread on CreationAyslum.net
#--------------------------------------------------------------------------
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#--------------------------------------------------------------------------
#Update_Detect - How to Stop Detection if desired
#--------------------------------------------------------------------------
#1. Within a event, add a SCRIPT (3rd page)
#2. type "update_detect(EVENT_ID, TRUE/FALSE)" -Note: it defaults to false
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#--------------------------------------------------------------------------
#RETURN TO POSITION
#--------------------------------------------------------------------------
#Use this to determine if you would like the event to return to its original
#position or not.
#--------------------------------------------------------------------------
RETURN_TO_POSITION = true
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#--------------------------------------------------------------------------
#CHASE_SPEED and ENABLE_SPEED_CHANGE
#--------------------------------------------------------------------------
#Use this to set the speed in which enemies will approach after spotting you
#and whether or not their speed will change.
#--------------------------------------------------------------------------
CHASE_SPEED = 3
ENABLE_SPEED_CHANGE = true
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#--------------------------------------------------------------------------
#VIEW_RANGE
#--------------------------------------------------------------------------
#Use this to set the distance in which you must be in order to start the detection
#process, or escape to stop.
#--------------------------------------------------------------------------
VIEW_RANGE = 5
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#--------------------------------------------------------------------------
#ESCAPE_RANGE
#--------------------------------------------------------------------------
#Use this to set the distance in which you must escape to stop the detection process
#--------------------------------------------------------------------------
ESCAPE_RANGE = 9
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#--------------------------------------------------------------------------
#Other Notes
#--------------------------------------------------------------------------
#If the event has a custom move route, they will resume that route when finished
#chasing you, but if you dont set RETURN_TO_POSITION, then they will resume
#their custom route at the location they stopped chasing you.
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class Game_Map
#--------------------------------------------------------------------------
# * Frame Update
#--------------------------------------------------------------------------
 alias en_detect_gm_update update
 def update
  en_detect_gm_update
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  # Update map event
  for event in @events.values
   if !event.name.include?("enemy")
    next
   else
    if event.character_name != ""
     if event.stop_detect?
      next
     end
     if check_distance(event.id) == true
      if event.exclamation == false
       event.old_type = event.move_type
       event.move_type = 2
       if ENABLE_SPEED_CHANGE
        event.old_speed = event.move_speed
        event.move_speed = CHASE_SPEED
       end
       event.exclamation = true
       event.animation_id = 98 #98 happens to be the exclamation animation
       event.f_route.clear
      end
     else
      if event.exclamation == true
       event.exclamation = false
       if RETURN_TO_POSITION == true
        if event.x != @map.events[event.id].x or event.y != @map.events[event.id].y
         route = get_route(event, @map.events[event.id].x, @map.events[event.id].y)
         event.run_route(route)
        end
       else
        event.restore_route
       end
      end
     end
    end
   end
  end
 end
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 def check_distance(id = nil)
  unless id == nil
   event = $game_map.events[id]
   range = ($game_player.x - event.x).abs + ($game_player.y - event.y).abs
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   if range <= VIEW_RANGE and range > 0
    return true
   elsif range <= ESCAPE_RANGE and range > 0 and event.exclamation
    return true
   end
  end
 end
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 def get_route(event, x=0, y=0)
  target_x = x
  target_y = y
  max = (target_x - event.x).abs + (target_y - event.y).abs + 5
  position = [[event.x, event.y]]
  route = [[]]
  more_step = [0]
  for i in more_step
   x = position[i][0]
   y = position[i][1]
   if !position.include?([x, y + 1]) and event.passable?(x, y, 2)
    position.push([x, y + 1])
    route.push(route[i] + [2])
    if route[i].size + 1 < max
     more_step.push(route.index(route[i] + [2]))
    end
   end
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   if !position.include?([x - 1, y]) and event.passable?(x, y, 4)
    position.push([x - 1, y])
    route.push(route[i] + [4])
    if route[i].size + 1 < max
     more_step.push(route.index(route[i] + [4]))
    end
   end
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   if !position.include?([x + 1, y]) and event.passable?(x, y, 6)
    position.push([x + 1, y])
    route.push(route[i] + [6])
    if route[i].size + 1 < max
     more_step.push(route.index(route[i] + [6]))
    end
   end
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   if !position.include?([x, y - 1]) and event.passable?(x, y, 8)
    position.push([x, y - 1])
    route.push(route[i] + [8])
    if route[i].size + 1 < max
     more_step.push(route.index(route[i] + [8]))
    end
   end
  end
  if position.index([target_x, target_y]) == false
   return [2]
  else
   return route[position.index([target_x, target_y])]
  end
 end
end
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class Game_Event
 attr_accessor :move_type
 attr_accessor :move_speed
 attr_accessor :old_speed
 attr_accessor :exclamation
 attr_accessor :old_type
 attr_accessor :stop_trigger
 attr_reader  :f_route
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 def initialize(map_id, event)
  super()
  @map_id = map_id
  @event = event
  @id = @event.id
  @erased = false
  @starting = false
  @through = true
  @name = @event.name
  @exclamation = false
  @f_route = []
  @step = 0
  @old_type = @move_type
  @old_move_route =  @move_route
  @old_speed = @move_speed
  @stop_trigger = false
  moveto(@event.x, @event.y)
  refresh  Â
 end
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 def stop_detect?
  return @stop_trigger
 end
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 def restore_route
  @move_type = @old_type
  @move_route_index = @original_move_route_index
  @move_speed = @old_speed
  refresh
  return
 end
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 def name
  return @name
 end
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 alias en_det_update update
 def update
  if @f_route.size > 0
   run_path unless self.moving?
   if @f_route.size == 0
    restore_route
   end
  end  Â
  en_det_update
 end
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 def run_route(route)
  @f_route = route
  @step = 0
 end
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 def run_path
  if @f_route.size > 0
   if @f_route[@step] == nil
    @f_route = []
   end
   action = @f_route[@step]
   @step += 1
   case action
   when 2
    self.move_down
   when 4
    self.move_left
   when 6
    self.move_right
   when 8
    self.move_up
   end
  end
 end Â
end
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class Interpreter
 def update_detect(id, set = false)
  $game_map.events[id].stop_trigger = set
 end
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 def spotted?
  is_true = 0
  for event in $game_map.events.values
   if event.exclamation
    is_true += 1
   end
  end
  if is_true > 0
   return true
  else
   return false
  end
 end
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 def change_switch(id = 0, value = false, type = 0, switch = "A")
  if id > 0
   if type == 0 #for use of main switches
    #id is switch_id and value should set to true or false
    $game_switches[id] = value
   elsif type == 1 #For use of self switches
    #id is event.id and switch is the desired selfswitch. It must be text!
    #value is true or false
    key = [$game_map.map_id, id, switch]
    # Updates self switch
    $game_self_switches[key] = value
   end
   # Refresh map
   $game_map.need_refresh = true
   return true
  end
 end
end
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