[Scripting Question] How to track players steps with a script

class PTracker
attr_accessor :decision
attr_accessor :steps

def initialize
@start = nil
@BeingTracked = false
@steps = 0
@decision = 0
end

def pbReceptionMap
return @BeingTracked ? @start[0] : 0
end

def BeingTracked?
return @BeingTracked
end

def pbKickedOut
if $scene.is_a?(Scene_Map)
pbFadeOutIn {
$game_temp.player_transferring = true
$game_temp.transition_processing = true
$game_temp.player_new_map_id = @start[0]
$game_temp.player_new_x = @start[1]
$game_temp.player_new_y = @start[2]
$game_temp.player_new_direction = 2
$scene.transfer_player
}
end
end

def pbTrack(steps)
@start = [$game_map.map_id,$game_player.x,$game_player.y,$game_player.direction]
@BeingTracked = true
@steps = steps
end

def pbStopTrack
@start = nil
@BeingTracked = false
@steps = 0
@decision = 0
$game_map.need_refresh = true
end
end



Events.onMapChange += proc { |_sender,*args|
pbPTracker.pbStopTrack if !pbTrackMap?
}

def pbTrackMap?
if pbPTracker.BeingTracked?
# Reception map is handled separately from safari map since the reception
# map can be outdoors, with its own grassy patches.
reception = pbPTracker.pbReceptionMap
return true if $game_map.map_id == reception
map_metadata = GameData::MapMetadata.try_get($game_map.map_id)
return true if map_metadata && map_metadata.safari_map
end
return false
end

def pbPTracker
$PokemonGlobal.PTracker = PTracker.new if !$PokemonGlobal.PTracker
return $PokemonGlobal.PTracker
end

Events.onStepTakenTransferPossible += proc { |_sender,e|
handled = e[0]
next if handled[0]
if pbTrackMap? && pbPTracker.decision==0
pbPTracker.steps -= 1
if pbPTracker.steps<=0
pbMessage(_INTL("PA: Test complete!\1"))
pbMessage(_INTL("PA: You are no longer being tracked!"))
pbPTracker.decision = 1
handled[0] = true
end
end
}