Setudef

Eggdrop users often like a script's functionality to work on only some of the channels the Eggdrop resides on. For example, an Eggdrop running a Tcl script that greets every user is nice on a small channel, but would quickly become annoying on a busy channel where users are joining every 30 seconds. There are two ways you can enable a script to work on only some channels the Eggdrop resides on.

User-defined Channel Flags (Preferred)

Adding a channel flag

From doc/tcl-commands.doc, you can use the setudef command:

setudef <flag/int/str> <name>

    Description: initializes a user defined channel flag, string or integer setting. You can use it like any other flag/setting. IMPORTANT: Don’t forget to reinitialize your flags/settings after a restart, or it’ll be lost.

This command creates a new flag setting that can be used via the

.chanset

command, and viewed via the

.chaninfo

command. To create a custom flag that a script can check, create it by adding the setudef command:

setudef flag myscript

This will add a flag that can be viewed, enabled or disabled via the partyline:

User defined channel flags:
     -myscript

As with any other Eggdrop channel flag, it can be enabled or disabled with the .chanset command:

.chanset #test +myscript
Successfully set modes { +myscript  } on #test.
[22:42:18] #-HQ# chanset #test +myscript 

.chaninfo #test
User defined channel flags:
     +myscript

Checking a channel flag

So now that you've added a channel flag that the user can interact with, how does a script use that information? The answer is the channel get Tcl command.

channel get <name> [setting]

    Returns: The value of the setting you specify. For flags, a value of 0 means it is disabled (-), and non-zero means enabled (+). If no setting is specified, a flat list of all available settings and their values will be returned.

To check if a flag is enabled for a flag, you would use:

channel get #test myscript

Or, perhaps a more useful example:

if [channel get #test myscript] {
  putserv "PRIVMSG #test :This is a message that is only sent if the myscript flag is enabled"
}

Example Tcl script

So now, let's write a simple greet script that can be turned on and off via the partyline for each channel:

bind join * * greetNewUser

setudef flag greetScript
proc greetNewUser {nick user hand chan} {
  if {[channel get $chan greetScript]} {
    putserv "PRIVMSG $chan :Hello $nick, welcome to $chan!"
  }
}

Bind Mask (less preferred)

If your script uses a bind to trigger an action, it probably incorporates a mask that specifies which users or conditions are allowed to trigger the bind. For example, the documentation for a JOIN bind states:

    JOIN (stackable)

    bind join <flags> <mask> <proc>

    procname <nick> <user@host> <handle> <channel>

    Description: triggered by someone joining the channel. The mask in the bind is matched against “#channel nick!user@host” and can contain wildcards.

From that, we can see here that a mask that would trigger only on channel #test would take the form of

"channel nick!user@host"

You can choose a mask such as

"#test *"

that could be triggered by any user on #test, but this is considered less user-friendly to maintain, as the user would have to edit the Tcl file and then restart the Eggdrop in order to enable or disable the script on a channel.

Example Tcl Script

bind join "#test *" * greetNewUser
bind join "#other channel *" * greetNewUser
# Each channel requires its own bind that will call the greetNewUser script

setudef flag greetScript
proc greetNewUser {nick user hand chan} {
  putserv "PRIVMSG $chan :Hello $nick, welcome to $chan!"
}