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initial steps in doing content type extension

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This commit is contained in:
Perttu Ahola 2011-07-02 01:07:54 +03:00
parent 7b290660ea
commit 8f742855a1
5 changed files with 153 additions and 146 deletions
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92
src/mapnode.cpp
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@ -30,8 +30,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
ContentFeatures::~ContentFeatures()
{
if(translate_to)
delete translate_to;
/*if(translate_to)
delete translate_to;*/
if(initial_metadata)
delete initial_metadata;
}
@ -241,6 +241,94 @@ u8 MapNode::getMineral()
return MINERAL_NONE;
}
u32 MapNode::serializedLength(u8 version)
{
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapNode format not supported");
if(version == 0)
return 1;
else if(version <= 9)
return 2;
else
return 3;
}
void MapNode::serialize(u8 *dest, u8 version)
{
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapNode format not supported");
u8 actual_d = d;
// Convert from new version to old
if(version <= 18)
{
// In these versions, CONTENT_IGNORE and CONTENT_AIR
// are 255 and 254
if(d == CONTENT_IGNORE)
d = 255;
else if(d == CONTENT_AIR)
d = 254;
}
if(version == 0)
{
dest[0] = actual_d;
}
else if(version <= 9)
{
dest[0] = actual_d;
dest[1] = param;
}
else
{
dest[0] = actual_d;
dest[1] = param;
dest[2] = param2;
}
}
void MapNode::deSerialize(u8 *source, u8 version)
{
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapNode format not supported");
if(version == 0)
{
d = source[0];
}
else if(version == 1)
{
d = source[0];
// This version doesn't support saved lighting
if(light_propagates() || light_source() > 0)
param = 0;
else
param = source[1];
}
else if(version <= 9)
{
d = source[0];
param = source[1];
}
else
{
d = source[0];
param = source[1];
param2 = source[2];
// Convert from old version to new
if(version <= 18)
{
// In these versions, CONTENT_IGNORE and CONTENT_AIR
// are 255 and 254
if(d == 255)
d = CONTENT_IGNORE;
else if(d == 254)
d = CONTENT_AIR;
}
}
}
/*
Gets lighting value at face of node