Moving parts for minecraft map with mapcrafter and player markers, powered by cron!

get_player_icon.php

#!/usr/bin/php -f
<?php
// original version was from TJ09
// forum link: http://forums.bukkit.org/threads/info-mapmarkers-v0-3-4-1-1r6.843/

$sizefactor = 1.5;
$cachetime = 60*60*24;
$destination = "/var/www/html/map2/static/markers/";

if(sizeof($argv) > 1) {
    $username = preg_replace("/[^a-zA-Z0-9_]/", "", $argv[1]);
} else {
    die("No username provided\n");
}


// If it's cached, then yay.
$filename = "$destination/$username.png";
if(file_exists($filename) && filemtime($filename) > time() - $cachetime) {
    echo "Cached\n";
    exit(0);
}

if (file_exists("$filename.fail") && filemtime("$filename.fail") > time() - (60 * 60 * 4)) {
    die("Failed to get user icon previously, waiting to retry...\n");
}

$src = @imagecreatefrompng("http://skins.minecraft.net/MinecraftSkins/{$username}.png");
if(!$src) {
    touch("$filename.fail");
    die("Failed to get skin for $username\n");
}

$img = imagecreatetruecolor(16, 32);
imagealphablending($img, false);
imagesavealpha($img, true);

imagefill($img, 0, 0, imagecolorallocatealpha($img, 255, 0, 255, 127));

imagecopy($img, $src, 4, 0, 8, 8, 8, 8);                      //Head
imagecopy($img, $src, 4, 8, 20, 20, 8, 12);                   //Body
imagecopy($img, $src, 0, 8, 44, 20, 4, 12);                   //Arm-L
imagecopyresampled($img, $src, 12, 8, 47, 20, 4, 12, -4, 12); //Arm-R
imagecopy($img, $src, 4, 20, 4, 20, 4, 12);                   //Leg-L
imagecopyresampled($img, $src, 8, 20, 7, 20, 4, 12, -4, 12);  //Leg-R

// Enable alpha blending so hat blends with face.
imagealphablending($img, true);
imagecopy($img, $src,   4, 0, 40, 8, 8, 8);    //Hat

$img_big = imagecreatetruecolor(16*$sizefactor, 32*$sizefactor);
imagealphablending($img_big, false);
imagesavealpha($img_big, true);
imagecopyresampled($img_big, $img, 0, 0, 0, 0, 16*$sizefactor, 32*$sizefactor, 16, 32);
imagepng($img_big, $filename);
echo "Created\n";
?>

make_markers.pl

#!/usr/bin/perl

use strict;
use YAML::XS;
use Data::Dumper;

my %players;
my $NBT = "/usr/bin/nbt2yaml";

foreach my $f (glob("/opt/minecraft_server/world/playerdata/*.dat")) {
    my ($uuid) = $f =~ /\/([^\/]+?)\.dat$/;
    my $data = `$NBT $f`;
    my $yaml = Load($data);
    my $pos;
    my $dim;
    foreach my $h (@{$yaml->{""}}) {
        if (defined $h->{Pos}) {
            $pos = $h;
        }
        if (defined $h->{Dimension}) {
            $dim = $h->{Dimension};
        }
    }
    my $name = `zgrep $uuid /opt/minecraft_server/logs/*.log* | head -1 | grep -oE 'player [^ ]* ' | cut -d' ' -f2`;
    chomp($name);
    # check that we have an icon...
    my $res = `/home/minecraft/get_player_icon.php $name`;
    $players{$name} = { x => $pos->{Pos}->[0], y => $pos->{Pos}->[1], z => $pos->{Pos}->[2], dimension => $dim };
}

my $TEMPLATE = <<'TEMPL';
{ "players": [
PLAYMARKS
]
}
TEMPL

my $markers = "";
my $pcnt = scalar(keys %players);
my $c = 1;
foreach my $p (keys %players) {
    my $icon = "player";
    if (-e "/var/www/html/map2/static/markers/$p.png") {
        $icon = $p;
    }
    my $world = $players{$p}{dimension} == 0 ? "world" : "nether";
    my $mark = <<MARKER;
        {
                "username": "$p",
                "icon": "$icon",
                "world": "$world",
                "x": ${$players{$p}{x}},
                "y": ${$players{$p}{y}},
                "z": ${$players{$p}{z}}
        }
MARKER
    $markers .= $mark;
    $markers .= "," if ++$c <= $pcnt;
}

$TEMPLATE =~ s/PLAYMARKS/$markers/m;

if (open(my $fh,">/var/www/html/map2/players.json")) {
    print $fh $TEMPLATE;
    close $fh;
} else {
    print "Failed to open marker file: $!\n";
}

playermarkers.js

.....

var INTERVAL = 60 * 1000;
var ANIMATED = true;

var JSON_PATH = "players.json";
var IMG_PATH = "static/markers/{icon}.png";
var IMG_SIZE_FACTOR = 1.5;

function PlayerMarker(ui, username, icon, world, pos) {
	this.ui = ui;

	this.username = username;
	this.world = world;
	this.active = true;

	this.marker = L.marker(this.ui.mcToLatLng(pos.x, pos.z, pos.y), {
		title: this.username,
		icon: L.icon({
			iconUrl: IMG_PATH.replace("{icon}", icon),
			iconSize: [16 * IMG_SIZE_FACTOR, 32 * IMG_SIZE_FACTOR],
		}),
	});
	this.marker.addTo(this.ui.lmap);

	this.moveCounter = 0;
	this.start = null;
	this.destination = pos;
}

......

MapPlayerMarkerHandler.prototype.create = function() {
	ui = this.ui;

	var handler = function(self) {
		return function() {
			$.ajax({
				dataType: "json",
				url: JSON_PATH,
				success: function(data) {
					self.updatePlayers(data);
				},
				error: function(xhr,err,txt) {
					console.log('player error: '+err+' -> '+txt);
				}
			});
			// I was getting errors, but they were never reported, so black hole of doom
			//$.getJSON(JSON_PATH, function(data) { console.log('wtf...');self.updatePlayers(data); });
		};
	}(this);

	window.setTimeout(handler, 500);
	window.setInterval(handler, INTERVAL);
};

....

MapPlayerMarkerHandler.prototype.updatePlayers = function(data) {
	if(!data)
		return;

	var globalPlayersOnline = [];
	var worldPlayersOnline = 0;
	for(var i = 0; i < data["players"].length; i++) {
		var user = data["players"][i];
		var username = user.username;
		var pos = {x: user.x, z: user.z, y: user.y};

		var player;

		if(user.username in this.players) {
			player = this.players[username];
		} else {
			player = new PlayerMarker(ui, username, user.icon, user.world, pos);
			this.players[username] = player;
		}

		player.setActive(user.world == this.currentWorld);

		if(player.active) {
			worldPlayersOnline++;
			player.move(pos);
		}
		globalPlayersOnline.push(username);
	}

	for(var name in this.players) {
		if(globalPlayersOnline.indexOf(name) == -1) {
			this.players[name].setActive(false);
			delete this.players[name];
		}
	}

	document.title = "(" + worldPlayersOnline + "/" + globalPlayersOnline.length + ") " + this.documentTitle;
};

....