minetest/minetest
1
0
Fork 0
mirror of https://github.com/minetest/minetest.git synced 2024-11-13 05:50:28 +01:00
Code Issues Releases Wiki Activity

Implement propagateSunlight for VoxelManipulator

Browse Source
This commit is contained in:
Perttu Ahola 2012-01-27 12:58:52 +02:00
parent e15dca2a9f
commit 56496ad5d8
6 changed files with 337 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/CMakeLists.txt
View File

@ -153,6 +153,7 @@ configure_file(
)
set(common_SRCS
voxelalgorithms.cpp
sound.cpp
quicktune.cpp
subgame.cpp

114
src/test.cpp
View File

@ -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){

24
src/voxel.cpp
View File

@ -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;
}

35
src/voxel.h
View File

@ -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,

126
src/voxelalgorithms.cpp Normal file
View File

@ -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

50
src/voxelalgorithms.h Normal file
View File

@ -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