/*
-Minetest-c55
-Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GNU Lesser General Public License for more details.
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
}
}
+void clearLightAndCollectSources(VoxelManipulator &v, VoxelArea a,
+ enum LightBank bank, INodeDefManager *ndef,
+ std::set<v3s16> & light_sources,
+ std::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.insert(p);
+
+ // 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[p] = oldlight;
+ }
+ }
+}
+
SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
bool inexistent_top_provides_sunlight,
- core::map<v3s16, bool> & light_sources,
+ std::set<v3s16> & light_sources,
INodeDefManager *ndef)
{
// Return values
required_a.pad(v3s16(0,1,0));
// Make sure we have access to it
v.emerge(a);
-
+
s16 max_y = a.MaxEdge.Y;
s16 min_y = a.MinEdge.Y;
-
+
for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
{
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--)
if(incoming_light > old_light)
n.setLight(LIGHTBANK_DAY, incoming_light, ndef);
-
+
if(diminish_light(incoming_light) != 0)
- light_sources.insert(p, true);
+ light_sources.insert(p);
}
-
+
// Check validity of sunlight at top of block below if it
// hasn't already been proven invalid
if(bottom_sunlight_valid)