Automatically load towns from .OTBM file

Takes up to 10 seconds for otservbr on my PC Taken from old Smart AAC - class SpawnsReader.php
2025-10-14 09:44:55 +02:00 · 2020-10-09 00:12:07 +02:00
parent ae7350e3a0
commit a52396008d
3 changed files with 117 additions and 27 deletions
--- a/system/libs/TownsReader.php
+++ b/system/libs/TownsReader.php
@@ -0,0 +1,82 @@
+<?php
+/*
+    This file is part of OTSCMS (http://www.otscms.com/) project.
+
+    Copyright (C) 2005 - 2007 Wrzasq (wrzasq@gmail.com)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/*
+    This code bases on oryginal OTServ code for .otbm files - file iomapotbm.cpp rev.2141
+*/
+class TownsReader
+{
+	// node bytes
+	const ESCAPE_CHAR = 0xFD;
+	const NODE_START = 0xFE;
+
+	// map node types
+	const OTBM_TOWN = 13;
+
+	// file handler
+	protected $file;
+
+	// towns
+	private $towns = [];
+
+	// loads map .otbm file
+	public function __construct($file)
+	{
+		// opens file for reading
+		$this->file = fopen($file, 'rb');
+	}
+
+	public function load()
+	{
+		// checks if file is opened correctly
+		if ($this->file) {
+			// skips version
+			fseek($this->file, 4);
+
+			// reads nodes chain
+			while (!feof($this->file)) {
+				// reads byte
+				switch (ord(fgetc($this->file))) {
+					// maybe a town node
+					case self::NODE_START:
+						// reads node type
+						if (ord(fgetc($this->file)) == self::OTBM_TOWN) {
+							$id = unpack('L', fread($this->file, 4));
+							$length = unpack('S', fread($this->file, 2));
+
+							// reads town name
+							$this->towns[$id[1]] = fread($this->file, $length[1]);
+						}
+						break;
+
+					// escape next character - it might be NODE_START character which is in fact not
+					case self::ESCAPE_CHAR:
+						fgetc($this->file);
+						break;
+				}
+			}
+		}
+	}
+
+	public function get() {
+		return $this->towns;
+	}
+}