X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Fserialization.h;h=01d37d3632fb0e5f3985d42c0e7737edb59e1c0a;hb=006ef5b4a5e362eed848ca26b411a8059d74b965;hp=0d74ccf48fb7ba280ce101416dfa992180638022;hpb=fd845f27f5b3e3c6587c472be76235567a7b934d;p=oweals%2Fminetest.git

diff --git a/src/serialization.h b/src/serialization.h
index 0d74ccf48..01d37d363 100644
--- a/src/serialization.h
+++ b/src/serialization.h
@@ -1,6 +1,6 @@
 /*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
@@ -30,11 +30,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	--------------------------------
 
 	For map data (blocks, nodes, sectors).
-	
+
 	NOTE: The goal is to increment this so that saved maps will be
 	      loadable by any version. Other compatibility is not
 		  maintained.
-		  
+
 	0: original networked test with 1-byte nodes
 	1: update with 2-byte nodes
 	2: lighting is transmitted in param
@@ -59,23 +59,33 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 	21: dynamic content type allocation
 	22: minerals removed, facedir & wallmounted changed
 	23: new node metadata format
-	24: 16-bit node ids and node timers
+	24: 16-bit node ids and node timers (never released as stable)
+	25: Improved node timer format
+	26: Never written; read the same as 25
 */
 // This represents an uninitialized or invalid format
 #define SER_FMT_VER_INVALID 255
 // Highest supported serialization version
-#define SER_FMT_VER_HIGHEST 24
+#define SER_FMT_VER_HIGHEST_READ 26
+// Saved on disk version
+#define SER_FMT_VER_HIGHEST_WRITE 25
 // Lowest supported serialization version
-#define SER_FMT_VER_LOWEST 0
+#define SER_FMT_VER_LOWEST_READ 0
+// Lowest serialization version for writing
+// Can't do < 24 anymore; we have 16-bit dynamically allocated node IDs
+// in memory; conversion just won't work in this direction.
+#define SER_FMT_VER_LOWEST_WRITE 24
 
-#define ser_ver_supported(v) (v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST)
+inline bool ser_ver_supported(s32 v) {
+	return v >= SER_FMT_VER_LOWEST_READ && v <= SER_FMT_VER_HIGHEST_READ;
+}
 
 /*
 	Misc. serialization functions
 */
 
-void compressZlib(SharedBuffer<u8> data, std::ostream &os);
-void compressZlib(const std::string &data, std::ostream &os);
+void compressZlib(SharedBuffer<u8> data, std::ostream &os, int level = -1);
+void compressZlib(const std::string &data, std::ostream &os, int level = -1);
 void decompressZlib(std::istream &is, std::ostream &os);
 
 // These choose between zlib and a self-made one according to version