/*
Calculate smooth lighting at the given corner of p.
Both light banks.
*/
u16 getSmoothLight(v3s16 p, v3s16 corner, MeshMakeData *data)
{
if(corner.X == 1) p.X += 1;
else assert(corner.X == -1);
if(corner.Y == 1) p.Y += 1;
else assert(corner.Y == -1);
if(corner.Z == 1) p.Z += 1;
else assert(corner.Z == -1);
return getSmoothLight(p, data);
}
// Calculate lighting at the given corner of p
u8 getSmoothLight(v3s16 p, v3s16 corner,
VoxelManipulator &vmanip, u32 daynight_ratio)
{
if(corner.X == 1) p.X += 1;
else assert(corner.X == -1);
if(corner.Y == 1) p.Y += 1;
else assert(corner.Y == -1);
if(corner.Z == 1) p.Z += 1;
else assert(corner.Z == -1);
return getSmoothLight(p, vmanip, daynight_ratio);
}
static void getTileInfo(
// Input:
MeshMakeData *data,
v3s16 p,
v3s16 face_dir,
// Output:
bool &makes_face,
v3s16 &p_corrected,
v3s16 &face_dir_corrected,
u16 *lights,
TileSpec &tile,
u8 &light_source
)
{
VoxelManipulator &vmanip = data->m_vmanip;
INodeDefManager *ndef = data->m_gamedef->ndef();
v3s16 blockpos_nodes = data->m_blockpos * MAP_BLOCKSIZE;
MapNode n0 = vmanip.getNodeNoEx(blockpos_nodes + p);
MapNode n1 = vmanip.getNodeNoEx(blockpos_nodes + p + face_dir);
TileSpec tile0 = getNodeTile(n0, p, face_dir, data);
TileSpec tile1 = getNodeTile(n1, p + face_dir, -face_dir, data);
// This is hackish
bool equivalent = false;
u8 mf = face_contents(n0.getContent(), n1.getContent(),
&equivalent, ndef);
if(mf == 0)
{
makes_face = false;
return;
}
makes_face = true;
if(mf == 1)
{
tile = tile0;
p_corrected = p;
face_dir_corrected = face_dir;
light_source = ndef->get(n0).light_source;
}
else
{
tile = tile1;
p_corrected = p + face_dir;
face_dir_corrected = -face_dir;
light_source = ndef->get(n1).light_source;
}
// eg. water and glass
if(equivalent)
tile.material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
if(data->m_smooth_lighting == false)
{
lights[0] = lights[1] = lights[2] = lights[3] =
getFaceLight(n0, n1, face_dir, data);
}
else
{
v3s16 vertex_dirs[4];
getNodeVertexDirs(face_dir_corrected, vertex_dirs);
for(u16 i=0; i<4; i++)
{
lights[i] = getSmoothLight(
blockpos_nodes + p_corrected,
vertex_dirs[i], data);
}
}
return;
}
/*
Calculate smooth lighting at the XYZ- corner of p.
Both light banks.
*/
static u16 getSmoothLight(v3s16 p, MeshMakeData *data)
{
u16 day = getSmoothLight(LIGHTBANK_DAY, p, data);
u16 night = getSmoothLight(LIGHTBANK_NIGHT, p, data);
return day | (night << 8);
}
void getTileInfo(
// Input:
v3s16 blockpos_nodes,
v3s16 p,
v3s16 face_dir,
u32 daynight_ratio,
VoxelManipulator &vmanip,
NodeModMap &temp_mods,
bool smooth_lighting,
// Output:
bool &makes_face,
v3s16 &p_corrected,
v3s16 &face_dir_corrected,
u8 *lights,
TileSpec &tile
)
{
MapNode n0 = vmanip.getNodeNoEx(blockpos_nodes + p);
MapNode n1 = vmanip.getNodeNoEx(blockpos_nodes + p + face_dir);
TileSpec tile0 = getNodeTile(n0, p, face_dir, temp_mods);
TileSpec tile1 = getNodeTile(n1, p + face_dir, -face_dir, temp_mods);
// This is hackish
u8 content0 = getNodeContent(p, n0, temp_mods);
u8 content1 = getNodeContent(p + face_dir, n1, temp_mods);
u8 mf = face_contents(content0, content1);
if(mf == 0)
{
makes_face = false;
return;
}
makes_face = true;
if(mf == 1)
{
tile = tile0;
p_corrected = p;
face_dir_corrected = face_dir;
}
else
{
tile = tile1;
p_corrected = p + face_dir;
face_dir_corrected = -face_dir;
}
if(smooth_lighting == false)
{
lights[0] = lights[1] = lights[2] = lights[3] =
decode_light(getFaceLight(daynight_ratio, n0, n1, face_dir));
}
else
{
v3s16 vertex_dirs[4];
getNodeVertexDirs(face_dir_corrected, vertex_dirs);
for(u16 i=0; i<4; i++)
{
lights[i] = getSmoothLight(blockpos_nodes + p_corrected,
vertex_dirs[i], vmanip, daynight_ratio);
}
}
return;
}
static void getTileInfo(
// Input:
MeshMakeData *data,
v3s16 p,
v3s16 face_dir,
// Output:
bool &makes_face,
v3s16 &p_corrected,
v3s16 &face_dir_corrected,
u16 *lights,
TileSpec &tile,
u8 &light_source
,int step
)
{
auto &vmanip = data->m_vmanip;
INodeDefManager *ndef = data->m_gamedef->ndef();
v3s16 blockpos_nodes = data->m_blockpos * MAP_BLOCKSIZE;
MapNode n0 = vmanip.getNodeNoEx(blockpos_nodes + p*step);
// Don't even try to get n1 if n0 is already CONTENT_IGNORE
if (n0.getContent() == CONTENT_IGNORE ) {
makes_face = false;
return;
}
MapNode n1 = vmanip.getNodeNoEx(blockpos_nodes + p*step + face_dir*step);
// if(data->debug) infostream<<" GN "<<n0<< n1<< blockpos_nodes<<blockpos_nodes + p*step<<blockpos_nodes + p*step + face_dir*step<<std::endl;
// This is hackish
bool equivalent = false;
u8 mf = face_contents(n0.getContent(), n1.getContent(),
&equivalent, ndef);
if(mf == 0)
{
makes_face = false;
return;
}
makes_face = true;
if(mf == 1)
{
tile = getNodeTile(n0, p, face_dir, data);
p_corrected = p;
face_dir_corrected = face_dir;
light_source = ndef->get(n0).light_source;
}
else
{
tile = getNodeTile(n1, p + face_dir, -face_dir, data);
p_corrected = p + face_dir;
face_dir_corrected = -face_dir;
light_source = ndef->get(n1).light_source;
}
// eg. water and glass
if(equivalent)
tile.material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
if(data->m_smooth_lighting == false || step > 1)
{
lights[0] = lights[1] = lights[2] = lights[3] =
getFaceLight(n0, n1, face_dir, ndef);
}
else
{
v3s16 vertex_dirs[4];
getNodeVertexDirs(face_dir_corrected, vertex_dirs);
for(u16 i=0; i<4; i++)
{
lights[i] = getSmoothLight(
blockpos_nodes + p_corrected,
vertex_dirs[i], data);
}
}
return;
}