Changing an Entry in Gubid's Enemy Detection System

[Sooth]

Hello folks,

I am using Gubid's Enemy Detection System, which causes enemies to chase the player when they come within a certain distance (and mosey about their own business otherwise). The script allows for one to easily set the enemy's effective "sight range", chase speed, etc - within the script itself.

I would like to be able to, through event processing, access and change these values in the middle of the game - so that, say, enemies can see you from farther away in different conditions and locations. My coding knowledge is extremely minimal. How would I go about doing this?

Thanks for your time,

- Kriss

#--------------------------------------------------------------------------

# Enemy Detection System

# by Gubid - 8/12/07

# 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

#--------------------------------------------------------------------------

 

#--------------------------------------------------------------------------

#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

 

#--------------------------------------------------------------------------

#RETURN TO POSITION

#--------------------------------------------------------------------------

#Use this to determine if you would like the event to return to its original

#position or not.

#--------------------------------------------------------------------------

RETURN_TO_POSITION = false

 

#--------------------------------------------------------------------------

#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 = 4

ENABLE_SPEED_CHANGE = true

 

#--------------------------------------------------------------------------

#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 = 3

 

#--------------------------------------------------------------------------

#ESCAPE_RANGE

#--------------------------------------------------------------------------

#Use this to set the distance in which you must escape to stop the detection process

#--------------------------------------------------------------------------

ESCAPE_RANGE = 8

 

#--------------------------------------------------------------------------

#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.

 

class Game_Map

#--------------------------------------------------------------------------

# * Frame Update

#--------------------------------------------------------------------------

alias en_detect_gm_update update

def update

en_detect_gm_update

 

# 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

 

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

 

if range <= VIEW_RANGE and range > 0

return true

elsif range <= ESCAPE_RANGE and range > 0 and event.exclamation

return true

end

end

end

 

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

 

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

 

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

 

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

 

 

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

 

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

end

 

def stop_detect?

return @stop_trigger

end

 

def restore_route

@move_type = @old_type

@move_route_index = @original_move_route_index

@move_speed = @old_speed

refresh

return

end

 

def name

return @name

end

 

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

en_det_update

end

 

def run_route(route)

@f_route = route

@step = 0

end

 

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

end

 

class Interpreter

def update_detect(id, set = false)

$game_map.events[id].stop_trigger = set

end

 

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

 

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