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-rw-r--r--src/CMakeLists.txt1
-rw-r--r--src/test.cpp114
-rw-r--r--src/voxel.cpp24
-rw-r--r--src/voxel.h35
-rw-r--r--src/voxelalgorithms.cpp126
-rw-r--r--src/voxelalgorithms.h50
6 files changed, 337 insertions, 13 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 47ff5cbb0..2f963e24d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -153,6 +153,7 @@ configure_file(
)
set(common_SRCS
+ voxelalgorithms.cpp
sound.cpp
quicktune.cpp
subgame.cpp
diff --git a/src/test.cpp b/src/test.cpp
index 1b9dfcb5d..ecced33c3 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -36,6 +36,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "settings.h"
#include "log.h"
#include "utility_string.h"
+#include "voxelalgorithms.h"
/*
Asserts that the exception occurs
@@ -483,6 +484,118 @@ struct TestVoxelManipulator
}
};
+struct TestVoxelAlgorithms
+{
+ void Run(INodeDefManager *ndef)
+ {
+ {
+ VoxelManipulator v;
+ for(u16 z=0; z<3; z++)
+ for(u16 y=0; y<3; y++)
+ for(u16 x=0; x<3; x++)
+ {
+ v3s16 p(x,y,z);
+ v.setNodeNoRef(p, MapNode(CONTENT_AIR));
+ }
+ VoxelArea a(v3s16(0,0,0), v3s16(2,2,2));
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ //v.print(dstream, ndef, VOXELPRINT_LIGHT_DAY);
+ assert(res.bottom_sunlight_valid == true);
+ assert(v.getNode(v3s16(1,1,1)).getLight(LIGHTBANK_DAY, ndef)
+ == LIGHT_SUN);
+ }
+ v.setNodeNoRef(v3s16(0,0,0), MapNode(CONTENT_STONE));
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ assert(v.getNode(v3s16(1,1,1)).getLight(LIGHTBANK_DAY, ndef)
+ == LIGHT_SUN);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, false, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ assert(v.getNode(v3s16(2,0,2)).getLight(LIGHTBANK_DAY, ndef)
+ == 0);
+ }
+ v.setNodeNoRef(v3s16(1,3,2), MapNode(CONTENT_STONE));
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ assert(v.getNode(v3s16(1,1,2)).getLight(LIGHTBANK_DAY, ndef)
+ == 0);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, false, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ assert(v.getNode(v3s16(1,0,2)).getLight(LIGHTBANK_DAY, ndef)
+ == 0);
+ }
+ {
+ MapNode n(CONTENT_AIR);
+ n.setLight(LIGHTBANK_DAY, 10, ndef);
+ v.setNodeNoRef(v3s16(1,-1,2), n);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, false, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ }
+ {
+ MapNode n(CONTENT_AIR);
+ n.setLight(LIGHTBANK_DAY, LIGHT_SUN, ndef);
+ v.setNodeNoRef(v3s16(1,-1,2), n);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == false);
+ }
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, false, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == false);
+ }
+ v.setNodeNoRef(v3s16(1,3,2), MapNode(CONTENT_IGNORE));
+ {
+ core::map<v3s16, bool> light_sources;
+ voxalgo::setLight(v, a, 0, ndef);
+ voxalgo::SunlightPropagateResult res = voxalgo::propagateSunlight(
+ v, a, true, light_sources, ndef);
+ assert(res.bottom_sunlight_valid == true);
+ }
+ }
+ }
+};
+
/*
NOTE: These tests became non-working then NodeContainer was removed.
These should be redone, utilizing some kind of a virtual
@@ -1279,6 +1392,7 @@ void run_tests()
TEST(TestSerialization);
TESTPARAMS(TestMapNode, ndef);
TESTPARAMS(TestVoxelManipulator, ndef);
+ TESTPARAMS(TestVoxelAlgorithms, ndef);
//TEST(TestMapBlock);
//TEST(TestMapSector);
if(INTERNET_SIMULATOR == false){
diff --git a/src/voxel.cpp b/src/voxel.cpp
index bd06be877..34faccb19 100644
--- a/src/voxel.cpp
+++ b/src/voxel.cpp
@@ -63,7 +63,7 @@ void VoxelManipulator::clear()
m_flags = NULL;
}
-void VoxelManipulator::print(std::ostream &o, INodeDefManager *nodemgr,
+void VoxelManipulator::print(std::ostream &o, INodeDefManager *ndef,
VoxelPrintMode mode)
{
v3s16 em = m_area.getExtent();
@@ -94,8 +94,9 @@ void VoxelManipulator::print(std::ostream &o, INodeDefManager *nodemgr,
else
{
c = 'X';
- content_t m = m_data[m_area.index(x,y,z)].getContent();
- u8 pr = m_data[m_area.index(x,y,z)].param2;
+ MapNode n = m_data[m_area.index(x,y,z)];
+ content_t m = n.getContent();
+ u8 pr = n.param2;
if(mode == VOXELPRINT_MATERIAL)
{
if(m <= 9)
@@ -103,7 +104,7 @@ void VoxelManipulator::print(std::ostream &o, INodeDefManager *nodemgr,
}
else if(mode == VOXELPRINT_WATERPRESSURE)
{
- if(nodemgr->get(m).isLiquid())
+ if(ndef->get(m).isLiquid())
{
c = 'w';
if(pr <= 9)
@@ -118,6 +119,21 @@ void VoxelManipulator::print(std::ostream &o, INodeDefManager *nodemgr,
c = '#';
}
}
+ else if(mode == VOXELPRINT_LIGHT_DAY)
+ {
+ if(ndef->get(m).light_source != 0)
+ c = 'S';
+ else if(ndef->get(m).light_propagates == false)
+ c = 'X';
+ else
+ {
+ u8 light = n.getLight(LIGHTBANK_DAY, ndef);
+ if(light < 10)
+ c = '0' + light;
+ else
+ c = 'a' + (light-10);
+ }
+ }
}
o<<c;
}
diff --git a/src/voxel.h b/src/voxel.h
index 291b51e03..237366756 100644
--- a/src/voxel.h
+++ b/src/voxel.h
@@ -20,7 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifndef VOXEL_HEADER
#define VOXEL_HEADER
-#include "common_irrlicht.h"
+#include "irrlichttypes.h"
#include <iostream>
#include "debug.h"
#include "mapnode.h"
@@ -333,6 +333,7 @@ enum VoxelPrintMode
VOXELPRINT_NOTHING,
VOXELPRINT_MATERIAL,
VOXELPRINT_WATERPRESSURE,
+ VOXELPRINT_LIGHT_DAY,
};
class VoxelManipulator /*: public NodeContainer*/
@@ -394,24 +395,37 @@ public:
return MapNode(CONTENT_IGNORE);
return m_data[m_area.index(p)];
}
+ // Stuff explodes if non-emerged area is touched with this.
+ // Emerge first, and check VOXELFLAG_INEXISTENT if appropriate.
+ MapNode & getNodeRefUnsafe(v3s16 p)
+ {
+ return m_data[m_area.index(p)];
+ }
+ u8 & getFlagsRefUnsafe(v3s16 p)
+ {
+ return m_flags[m_area.index(p)];
+ }
+ bool exists(v3s16 p)
+ {
+ return m_area.contains(p) &&
+ !(getFlagsRefUnsafe(p) & VOXELFLAG_INEXISTENT);
+ }
MapNode & getNodeRef(v3s16 p)
{
emerge(p);
-
- if(m_flags[m_area.index(p)] & VOXELFLAG_INEXISTENT)
+ if(getFlagsRefUnsafe(p) & VOXELFLAG_INEXISTENT)
{
/*dstream<<"EXCEPT: VoxelManipulator::getNode(): "
<<"p=("<<p.X<<","<<p.Y<<","<<p.Z<<")"
<<", index="<<m_area.index(p)
- <<", flags="<<(int)m_flags[m_area.index(p)]
+ <<", flags="<<(int)getFlagsRefUnsafe(p)
<<" is inexistent"<<std::endl;*/
throw InvalidPositionException
("VoxelManipulator: getNode: inexistent");
}
-
- return m_data[m_area.index(p)];
+ return getNodeRefUnsafe(p);
}
- void setNode(v3s16 p, MapNode &n)
+ void setNode(v3s16 p, const MapNode &n)
{
emerge(p);
@@ -419,7 +433,8 @@ public:
m_flags[m_area.index(p)] &= ~VOXELFLAG_INEXISTENT;
m_flags[m_area.index(p)] &= ~VOXELFLAG_NOT_LOADED;
}
- void setNodeNoRef(v3s16 p, MapNode n)
+ // TODO: Should be removed and replaced with setNode
+ void setNodeNoRef(v3s16 p, const MapNode &n)
{
setNode(p, n);
}
@@ -498,7 +513,9 @@ public:
*/
void clearFlag(u8 flag);
-
+
+ // TODO: Move to voxelalgorithms.h
+
void unspreadLight(enum LightBank bank, v3s16 p, u8 oldlight,
core::map<v3s16, bool> & light_sources, INodeDefManager *nodemgr);
void unspreadLight(enum LightBank bank,
diff --git a/src/voxelalgorithms.cpp b/src/voxelalgorithms.cpp
new file mode 100644
index 000000000..ae609e96a
--- /dev/null
+++ b/src/voxelalgorithms.cpp
@@ -0,0 +1,126 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 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
+(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.
+
+You should have received a copy of the GNU 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.
+*/
+
+#include "voxelalgorithms.h"
+#include "nodedef.h"
+
+namespace voxalgo
+{
+
+void setLight(VoxelManipulator &v, VoxelArea a, u8 light,
+ INodeDefManager *ndef)
+{
+ 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);
+ n.setLight(LIGHTBANK_DAY, light, ndef);
+ n.setLight(LIGHTBANK_NIGHT, light, ndef);
+ }
+}
+
+SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
+ bool inexistent_top_provides_sunlight,
+ core::map<v3s16, bool> & light_sources,
+ INodeDefManager *ndef)
+{
+ // Return values
+ bool bottom_sunlight_valid = true;
+
+ // The full area we shall touch extends one extra at top and bottom
+ VoxelArea required_a = a;
+ 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++)
+ {
+ v3s16 p_overtop(x, max_y+1, z);
+ bool overtop_has_sunlight = false;
+ // If overtop node does not exist, trust heuristics
+ if(!v.exists(p_overtop))
+ overtop_has_sunlight = inexistent_top_provides_sunlight;
+ else if(v.getNodeRefUnsafe(p_overtop).getContent() == CONTENT_IGNORE)
+ overtop_has_sunlight = inexistent_top_provides_sunlight;
+ // Otherwise refer to it's light value
+ else
+ 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--)
+ {
+ v3s16 p(x,y,z);
+ MapNode &n = v.getNodeRefUnsafe(p);
+ if(incoming_light == 0){
+ // Do nothing
+ } else if(incoming_light == LIGHT_SUN &&
+ ndef->get(n).sunlight_propagates){
+ // Do nothing
+ } else if(ndef->get(n).sunlight_propagates == false){
+ incoming_light = 0;
+ } else {
+ incoming_light = diminish_light(incoming_light);
+ }
+ u8 old_light = n.getLight(LIGHTBANK_DAY, ndef);
+
+ if(incoming_light > old_light)
+ n.setLight(LIGHTBANK_DAY, incoming_light, ndef);
+
+ if(diminish_light(incoming_light) != 0)
+ light_sources.insert(p, true);
+ }
+
+ // Check validity of sunlight at top of block below if it
+ // hasn't already been proven invalid
+ if(bottom_sunlight_valid)
+ {
+ bool sunlight_should_continue_down = (incoming_light == LIGHT_SUN);
+ v3s16 p_overbottom(x, min_y-1, z);
+ if(!v.exists(p_overbottom) ||
+ v.getNodeRefUnsafe(p_overbottom
+ ).getContent() == CONTENT_IGNORE){
+ // Is not known, cannot compare
+ } else {
+ bool overbottom_has_sunlight = (v.getNodeRefUnsafe(p_overbottom
+ ).getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN);
+ if(sunlight_should_continue_down != overbottom_has_sunlight){
+ bottom_sunlight_valid = false;
+ }
+ }
+ }
+ }
+
+ return SunlightPropagateResult(bottom_sunlight_valid);
+}
+
+} // namespace voxalgo
+
diff --git a/src/voxelalgorithms.h b/src/voxelalgorithms.h
new file mode 100644
index 000000000..3dea233dc
--- /dev/null
+++ b/src/voxelalgorithms.h
@@ -0,0 +1,50 @@
+/*
+Minetest-c55
+Copyright (C) 2010-2012 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
+(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.
+
+You should have received a copy of the GNU 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.
+*/
+
+#ifndef VOXELALGORITHMS_HEADER
+#define VOXELALGORITHMS_HEADER
+
+#include "voxel.h"
+
+namespace voxalgo
+{
+
+// TODO: Move unspreadLight and spreadLight from VoxelManipulator to here
+
+void setLight(VoxelManipulator &v, VoxelArea a, u8 light,
+ INodeDefManager *ndef);
+
+struct SunlightPropagateResult
+{
+ bool bottom_sunlight_valid;
+
+ SunlightPropagateResult(bool bottom_sunlight_valid_):
+ bottom_sunlight_valid(bottom_sunlight_valid_)
+ {}
+};
+
+SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
+ bool inexistent_top_provides_sunlight,
+ core::map<v3s16, bool> & light_sources,
+ INodeDefManager *ndef);
+
+} // namespace voxalgo
+
+#endif
+
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