[XP] One Game Instance

One Game Instance
Authors: game_guy
Version: 1.0
Type: System Utility

Introduction

This script is to prevent multiple instances of your game. This is really only for online games so players can't cheat and PvP each other or whatever.
Features

• Prevents Multiple Instances
• Custom File/Error
• XP/VX/VX Ace Compatible

Screenshots

N/A
Demo

N/A
Script

Place at very top!

Spoiler for:

Code: [Select]

#===============================================================================
# One Game Instance
# Version 1.0
# Author game_guy
#-------------------------------------------------------------------------------
# Intro:
# Prevents players from opening multiple instances of your games.
#
# Features:
# Prevents Multiple Instances
# Custom File/Error
# XP/VX Compatible
#
# Instructions:
# Place as first script.
# Configure the 2 variables and thats all!
#
# Compatibility:
# Works with everything.
#
# Credits:
# game_guy ~ For creating it.
# ZenVirZan ~ For requesting it.
#===============================================================================

# Custom error message.
ERROR = "Instance already running."
# Custom file name, I'd recommend leaving the ENV[Appdata]
TOKEN_FILE = ENV['APPDATA'] + "game_name.token"

begin
  if FileTest.exists?(TOKEN_FILE)
    begin
      File.delete(TOKEN_FILE)
    rescue Errno::EACCES
      if !DEBUG && !$TEST
        print ERROR
        exit
      end
    end
  end
  $token = File.open(TOKEN_FILE, "w")
end


Instructions

In script.
Compatibility

Works with everything.
XP/VX/VX Ace compatibility.
Credits and Thanks

• game_guy ~ For creating it.
• ZenVirZan ~ For requesting it.

Author's Notes

Prevent dem hackahs! >:U

Nice and simple ^^
Just one question. What happens if the user has strange signs in their user name such as í or ö?