From 56496ad5d8a7662b0ae5c9f25d1348cb7b677b65 Mon Sep 17 00:00:00 2001 From: Perttu Ahola Date: Fri, 27 Jan 2012 12:58:52 +0200 Subject: [PATCH] Implement propagateSunlight for VoxelManipulator --- src/CMakeLists.txt | 1 + src/test.cpp | 114 ++++++++++++++++++++++++++++++++++++ src/voxel.cpp | 24 ++++++-- src/voxel.h | 35 ++++++++--- src/voxelalgorithms.cpp | 126 ++++++++++++++++++++++++++++++++++++++++ src/voxelalgorithms.h | 50 ++++++++++++++++ 6 files changed, 337 insertions(+), 13 deletions(-) create mode 100644 src/voxelalgorithms.cpp create mode 100644 src/voxelalgorithms.h diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index 47ff5cb..2f963e2 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 1b9dfcb..ecced33 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 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 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 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 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 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 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 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 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 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 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 bd06be8..34faccb 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< #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=("< & light_sources, INodeDefManager *nodemgr); void unspreadLight(enum LightBank bank, diff --git a/src/voxelalgorithms.cpp b/src/voxelalgorithms.cpp new file mode 100644 index 0000000..ae609e9 --- /dev/null +++ b/src/voxelalgorithms.cpp @@ -0,0 +1,126 @@ +/* +Minetest-c55 +Copyright (C) 2010-2012 celeron55, Perttu Ahola + +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 & 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=" + < & light_sources, + INodeDefManager *ndef); + +} // namespace voxalgo + +#endif +