Plugin to auto-generate regionlist file?

[huanga]

Might be over-kill on server resources with a plugin that'd keep track of region changes, so I don't think that is a viable solution.
But, at the same time, I find it annoying and difficult to maintain regionlist file manually.

It'd be really nice and cool if you can do this:

1. At end of each generation, in the folder the command was executed from, touch .pigmap-lastsuccess
2. At a potential increment build run (ie: incomplete info for full build, but also lacking -c and -r), look at the file date of .pigmap-lastsuccess, compare each file in region / chunk directory with the time of last success to see if newer (ie: if a save have been done on the same file)
3. Automatically build the list of files pigmap needs to visit to perform an incremental update

Hope my pseudo steps make sense and get considered :)

[huanga]

Okay, I got bored and wrote a small bash script...
I am not familiar with other shells, and this have only been tested lightly for myself.
Only thing I've noticed is my regions -1,-1; -1,0; 0,-1; and 0,0 are always updatd. I don't know the cause to this. Also, this ONLY works with the region save format. Since I am not old school enough to have a chunk based save, I do not even know how to begin. Aside from those, I'm not aware of any issues, and I am most likely not able to provide any support.

#! /bin/sh
# Some configurations
pigmap="/user/minecraft/mcscripts/pigmap"
i_path="/user/minecraft/mcramdisk/world"
o_path="/var/www/minecraft.site.com/map"
g_path="/user/minecraft/mcscripts/images"
b_param=6
t_param=1
z_param=10
h_param=3
working_path="/user/minecraft/mcramdisk"

# Don't touch anything else down here
# Switch to working directory as needed
if [ ! -z "$working_path" ]
    then
        cd $working_path
fi
# Verify if we have had previous runs
if [ -e .pigmap-lastsuccess ]
    then
        # Incremental Build
        for filename in $i_path/region/*
        do
            if [ $filename -nt .pigmap-lastsuccess ]
                then
                    # this file is newer!
                    echo $filename requires rendering!
                    echo $filename >> regionlist
            fi
        done
        # Issue the incremental build command
        $pigmap -i $i_path -o $o_path -r regionlist -g $g_path -h $h_param -x
    else
        # Initial Build
        $pigmap -B $b_param -T $t_param -Z $z_param -i $i_path -o $o_path -g $g_path -h $h_param
fi

# DONE! Remove regionlist (for next run) and touch .pigmap-lastsuccess
rm regionlist
touch .pigmap-lastsuccess

I'm keeping this issue open for now so other users can provide comments on how to improve this... If this is not the appropriate action, please feel free to adjust as you see fit.

[tdebarochez]

I made this little script for my server : https://gist.github.com/922978
and hope it will be useful.
Put it in the Minecraft root path and pigmap just below. The result will be stored in pigmap/output/ path

[equalpants]

I'll probably add an option eventually to detect changed regions/chunks by timestamp; since it's so easy to do this with a script, though, it's not a high priority.

P.S. pigmap.params is already touched on every map generation (full or incremental); no need for another file.
P.P.S. Check out "find -newer"; you can probably use it to simplify your script.

[equalpants]

...uh, I see tdebarochez beat me to it! Be sure to look at his script; it's very nice.

[florianbeisel]

Just in case you might make use of my script I put it on gist: https://gist.github.com/944469