// Calculate lighting at the XYZ- corner of p
u8 getSmoothLight(v3s16 p, VoxelManipulator &vmanip, u32 daynight_ratio)
{
u16 ambient_occlusion = 0;
u16 light = 0;
u16 light_count = 0;
for(u32 i=0; i<8; i++)
{
MapNode n = vmanip.getNodeNoEx(p - dirs8[i]);
if(content_features(n.d).param_type == CPT_LIGHT
// Fast-style leaves look better this way
&& content_features(n.d).solidness != 2)
{
light += decode_light(n.getLightBlend(daynight_ratio));
light_count++;
}
else
{
if(n.d != CONTENT_IGNORE)
ambient_occlusion++;
}
}
if(light_count == 0)
return 255;
light /= light_count;
if(ambient_occlusion > 4)
{
ambient_occlusion -= 4;
light = (float)light / ((float)ambient_occlusion * 0.5 + 1.0);
}
return light;
}
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;
}
