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minetest-engine-minecheat
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initial steps in doing content type extension

stable-0.2
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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1
src/content_mapnode.cpp
View File

@ -151,7 +151,6 @@ void content_mapnode_init()
// Deprecated
i = CONTENT_COALSTONE;
f = &content_features(i);
//f->translate_to = new MapNode(CONTENT_STONE, MINERAL_COAL);
f->setAllTextures("stone.png^mineral_coal.png");
f->is_ground_content = true;
setStoneLikeDiggingProperties(f->digging_properties, 1.5);

63
src/mapblock.cpp
View File

@ -607,24 +607,20 @@ void MapBlock::serialize(std::ostream &os, u8 version)
Get data
*/
// Serialize nodes
SharedBuffer<u8> databuf_nodelist(nodecount*3);
for(u32 i=0; i<nodecount; i++)
{
data[i].serialize(&databuf_nodelist[i*3], version);
}
// Create buffer with different parameters sorted
SharedBuffer<u8> databuf(nodecount*3);
// Get contents
for(u32 i=0; i<nodecount; i++)
{
databuf[i] = data[i].d;
}
// Get params
for(u32 i=0; i<nodecount; i++)
{
databuf[i+nodecount] = data[i].param;
}
// Get param2
for(u32 i=0; i<nodecount; i++)
{
databuf[i+nodecount*2] = data[i].param2;
databuf[i] = databuf_nodelist[i*3];
databuf[i+nodecount] = databuf_nodelist[i*3+1];
databuf[i+nodecount*2] = databuf_nodelist[i*3+2];
}
/*
@ -773,20 +769,14 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
("MapBlock::deSerialize: decompress resulted in size"
" other than nodecount*3");
// Set contents
// deserialize nodes from buffer
for(u32 i=0; i<nodecount; i++)
{
data[i].d = s[i];
}
// Set params
for(u32 i=0; i<nodecount; i++)
{
data[i].param = s[i+nodecount];
}
// Set param2
for(u32 i=0; i<nodecount; i++)
{
data[i].param2 = s[i+nodecount*2];
u8 buf[3];
buf[0] = s[i];
buf[1] = s[i+nodecount];
buf[2] = s[i+nodecount*2];
data[i].deSerialize(buf, version);
}
/*
@ -818,25 +808,6 @@ void MapBlock::deSerialize(std::istream &is, u8 version)
}
}
}
/*
Translate nodes as specified in the translate_to fields of
node features
NOTE: This isn't really used. Should it be removed?
*/
for(u32 i=0; i<MAP_BLOCKSIZE*MAP_BLOCKSIZE*MAP_BLOCKSIZE; i++)
{
MapNode &n = data[i];
MapNode *translate_to = content_features(n.d).translate_to;
if(translate_to)
{
dstream<<"MapBlock: WARNING: Translating node "<<n.d<<" to "
<<translate_to->d<<std::endl;
n = *translate_to;
}
}
}
void MapBlock::serializeDiskExtra(std::ostream &os, u8 version)

92
src/mapnode.cpp
View File

@ -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

138
src/mapnode.h
View File

@ -36,6 +36,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
- Tile = TileSpec at some side of a node of some content type
*/
/*
Ranges:
0x000...0x07f: param2 is fully usable
0x800...0xfff: param2 lower 4 bytes are free
*/
typedef u16 content_t;
/*
Initializes all kind of stuff in here.
Many things depend on this.
@ -59,14 +66,16 @@ void init_mapnode();
Doesn't create faces with anything and is considered being
out-of-map in the game map.
*/
#define CONTENT_IGNORE 255
//#define CONTENT_IGNORE 255
#define CONTENT_IGNORE 127
#define CONTENT_IGNORE_DEFAULT_PARAM 0
/*
The common material through which the player can walk and which
is transparent to light
*/
#define CONTENT_AIR 254
//#define CONTENT_AIR 254
#define CONTENT_AIR 126
/*
Content feature list
@ -94,7 +103,7 @@ class NodeMetadata;
struct ContentFeatures
{
// If non-NULL, content is translated to this when deserialized
MapNode *translate_to;
//MapNode *translate_to;
// Type of MapNode::param
ContentParamType param_type;
@ -154,7 +163,7 @@ struct ContentFeatures
void reset()
{
translate_to = NULL;
//translate_to = NULL;
param_type = CPT_NONE;
inventory_texture = NULL;
is_ground_content = false;
@ -399,20 +408,30 @@ enum LightBank
struct MapNode
{
// Content
u8 d;
/*
Main content
0x00-0x7f: Short content type
0x80-0xff: Long content type (param2>>4 makes up low bytes)
*/
union
{
u8 param0;
u8 d;
};
/*
Misc parameter. Initialized to 0.
- For light_propagates() blocks, this is light intensity,
stored logarithmically from 0 to LIGHT_MAX.
Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
- Contains 2 values, day- and night lighting. Each takes 4 bits.
- Contains 2 values, day- and night lighting. Each takes 4 bits.
- Mineral content (should be removed from here)
- Uhh... well, most blocks have light or nothing in here.
*/
union
{
s8 param;
u8 param1;
s8 param;
};
/*
@ -437,14 +456,6 @@ struct MapNode
param2 = a_param2;
}
/*MapNode & operator=(const MapNode &other)
{
d = other.d;
param = other.param;
param2 = other.param2;
return *this;
}*/
bool operator==(const MapNode &other)
{
return (d == other.d
@ -452,6 +463,16 @@ struct MapNode
&& param2 == other.param2);
}
// To be used everywhere
content_t getContent()
{
return d;
}
void setContent(content_t c)
{
d = c;
}
/*
These four are DEPRECATED I guess. -c55
*/
@ -566,88 +587,15 @@ struct MapNode
MINERAL_NONE if doesn't contain or isn't able to contain mineral.
*/
u8 getMineral();
/*
These serialization functions are used when informing client
of a single node add.
NOTE: When loading a MapBlock, these are not used. Should they?
Serialization functions
*/
static u32 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 serialize(u8 *dest, u8 version)
{
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapNode format not supported");
if(version == 0)
{
dest[0] = d;
}
else if(version <= 9)
{
dest[0] = d;
dest[1] = param;
}
else
{
dest[0] = d;
dest[1] = param;
dest[2] = param2;
}
}
void 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];
}
// Translate deprecated stuff
// NOTE: This doesn't get used because MapBlock handles node
// parameters directly
MapNode *translate_to = content_features(d).translate_to;
if(translate_to)
{
dstream<<"MapNode: WARNING: Translating "<<d<<" to "
<<translate_to->d<<std::endl;
*this = *translate_to;
}
}
static u32 serializedLength(u8 version);
void serialize(u8 *dest, u8 version);
void deSerialize(u8 *source, u8 version);
};
/*

5
src/serialization.h
View File

@ -53,12 +53,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
15: StaticObjects
16: larger maximum size of node metadata, and compression
17: MapBlocks contain timestamp
18: sqlite/new generator/whatever
18: new generator (not really necessary, but it's there)
19: new content type handling
*/
// This represents an uninitialized or invalid format
#define SER_FMT_VER_INVALID 255
// Highest supported serialization version
#define SER_FMT_VER_HIGHEST 18
#define SER_FMT_VER_HIGHEST 19
// Lowest supported serialization version
#define SER_FMT_VER_LOWEST 0