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-rw-r--r--src/mapblock.cpp6
-rw-r--r--src/serialization.h6
2 files changed, 9 insertions, 3 deletions
diff --git a/src/mapblock.cpp b/src/mapblock.cpp
index c22096562..4cc0abc81 100644
--- a/src/mapblock.cpp
+++ b/src/mapblock.cpp
@@ -526,6 +526,12 @@ void MapBlock::serialize(std::ostream &os, u8 version, bool disk)
throw SerializationError("ERROR: Not writing dummy block.");
}
+ // Can't do this anymore; we have 16-bit dynamically allocated node IDs
+ // in memory; conversion just won't work in this direction.
+ if(version < 24)
+ throw SerializationError("MapBlock::serialize: serialization to "
+ "version < 24 not possible");
+
// First byte
u8 flags = 0;
if(is_underground)
diff --git a/src/serialization.h b/src/serialization.h
index 6bc4cdc53..caa1a66da 100644
--- a/src/serialization.h
+++ b/src/serialization.h
@@ -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
@@ -70,7 +70,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
// Saved on disk version
#define SER_FMT_VER_HIGHEST_WRITE 25
// Lowest supported serialization version
-#define SER_FMT_VER_LOWEST 24
+#define SER_FMT_VER_LOWEST 0
inline bool ser_ver_supported(s32 v) {
return v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST_READ;