oss/luanti
oss/luanti
1
0
Fork 0
mirror of https://github.com/luanti-org/luanti.git synced 2025-08-11 17:51:04 +00:00
Code Wiki Activity

voxalgo::clearLightAndCollectSources

Browse source
This commit is contained in:
Perttu Ahola 2012-01-27 13:24:06 +02:00
parent 56496ad5d8
commit 0f3c2f6541
5 changed files with 112 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

41
src/voxelalgorithms.cpp
View file

@ -37,6 +37,42 @@ void setLight(VoxelManipulator &v, VoxelArea a, u8 light,
}
}
void clearLightAndCollectSources(VoxelManipulator &v, VoxelArea a,
enum LightBank bank, INodeDefManager *ndef,
core::map<v3s16, bool> & light_sources,
core::map<v3s16, u8> & unlight_from)
{
// The full area we shall touch
VoxelArea required_a = a;
required_a.pad(v3s16(0,0,0));
// Make sure we have access to it
v.emerge(a);
for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
{
v3s16 p(x,y,z);
MapNode &n = v.getNodeRefUnsafe(p);
u8 oldlight = n.getLight(bank, ndef);
n.setLight(bank, 0, ndef);
// If node sources light, add to list
u8 source = ndef->get(n).light_source;
if(source != 0)
light_sources[p] = true;
// Collect borders for unlighting
if((x==a.MinEdge.X || x == a.MaxEdge.X
|| y==a.MinEdge.Y || y == a.MaxEdge.Y
|| z==a.MinEdge.Z || z == a.MaxEdge.Z)
&& oldlight != 0)
{
unlight_from.insert(p, oldlight);
}
}
}
SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
bool inexistent_top_provides_sunlight,
core::map<v3s16, bool> & light_sources,
@ -69,11 +105,6 @@ SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
overtop_has_sunlight = (v.getNodeRefUnsafe(p_overtop).getLight(
LIGHTBANK_DAY, ndef) == LIGHT_SUN);
dstream<<"inexistent_top_provides_sunlight="
<<inexistent_top_provides_sunlight<<std::endl;
dstream<<"v.exists(p_overtop)="
<<v.exists(p_overtop)<<std::endl;
// Copy overtop's sunlight all over the place
u8 incoming_light = overtop_has_sunlight ? LIGHT_SUN : 0;
for(s32 y=max_y; y>=min_y; y--)