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399 lines
7.4 KiB
C++
399 lines
7.4 KiB
C++
/*
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* CDrawRoadsOperation.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "CDrawRoadsOperation.h"
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#include "CMap.h"
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#include "../RoadHandler.h"
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#include "../RiverHandler.h"
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VCMI_LIB_NAMESPACE_BEGIN
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const std::vector<CDrawLinesOperation::LinePattern> CDrawLinesOperation::patterns =
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{
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//single tile. fall-back pattern
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{
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{
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"-","-","-",
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"-","+","-",
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"-","-","-"
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},
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{14,14},
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{9,9},
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false,
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false
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},
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//Road straight with angle
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{
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{
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"?","-","+",
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"-","+","+",
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"+","+","?"
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},
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{2,5},
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{-1,-1},
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true,
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true
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},
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//Turn
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{
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{
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"?","-","?",
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"-","+","+",
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"?","+","?"
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},
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{0,1},
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{0,3},
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true,
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true
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},
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//Dead end horizontal
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{
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{
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"?","-","?",
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"-","+","+",
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"?","-","?"
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},
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{15,15},{11,12},
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true,
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false
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},
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//Dead end vertical
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{
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{
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"?","-","?",
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"-","+","-",
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"?","+","?"
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},
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{14,14},{9,10},
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false,
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true
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},
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//T-cross horizontal
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{
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{
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"?","+","?",
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"-","+","+",
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"?","+","?"
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},
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{6,7},{7,8},
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true,
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false
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},
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//T-cross vertical
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{
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{
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"?","-","?",
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"+","+","+",
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"?","+","?"
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},
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{8,9},{5,6},
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false,
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true
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},
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//Straight Horizontal
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{
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{
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"?","-","?",
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"+","+","+",
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"?","-","?"
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},
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{12,13},{11,12},
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false,
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false
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},
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//Straight Vertical
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{
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{
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"?","+","?",
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"-","+","-",
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"?","+","?"
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},
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{10,11},{9,10},
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false,
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false
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},
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//X-cross
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{
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{
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"?","+","?",
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"+","+","+",
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"?","+","?"
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},
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{16,16},{4,4},
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false,
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false
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}
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};
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static bool ruleIsNone(const std::string & rule)
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{
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return rule == "-";
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}
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static bool ruleIsSomething(const std::string & rule)
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{
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return rule == "+";
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}
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#ifndef NDEBUG
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static bool ruleIsAny(const std::string & rule)
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{
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return rule == "?";
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}
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#endif
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///CDrawLinesOperation
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CDrawLinesOperation::CDrawLinesOperation(CMap * map, CTerrainSelection terrainSel, CRandomGenerator * gen):
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CMapOperation(map),
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terrainSel(std::move(terrainSel)),
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gen(gen)
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{
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}
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///CDrawRoadsOperation
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CDrawRoadsOperation::CDrawRoadsOperation(CMap * map, const CTerrainSelection & terrainSel, RoadId roadType, CRandomGenerator * gen):
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CDrawLinesOperation(map, terrainSel,gen),
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roadType(roadType)
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{
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}
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///CDrawRiversOperation
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CDrawRiversOperation::CDrawRiversOperation(CMap * map, const CTerrainSelection & terrainSel, RiverId riverType, CRandomGenerator * gen):
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CDrawLinesOperation(map, terrainSel, gen),
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riverType(riverType)
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{
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}
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void CDrawLinesOperation::execute()
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{
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std::set<int3> invalidated;
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for(const auto & pos : terrainSel.getSelectedItems())
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{
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executeTile(map->getTile(pos));
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auto rect = extendTileAroundSafely(pos);
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rect.forEach([&invalidated](const int3 & pos)
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{
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invalidated.insert(pos);
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});
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}
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updateTiles(invalidated);
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}
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void CDrawLinesOperation::undo()
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{
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//TODO
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}
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void CDrawLinesOperation::redo()
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{
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//TODO
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}
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void CDrawLinesOperation::flipPattern(LinePattern& pattern, int flip) const
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{
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//todo: use cashing here and also in terrain patterns
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if(flip == 0)
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{
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return;
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}
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if(flip == FLIP_PATTERN_HORIZONTAL || flip == FLIP_PATTERN_BOTH)
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{
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for(int i = 0; i < 3; ++i)
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{
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int y = i * 3;
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std::swap(pattern.data[y], pattern.data[y + 2]);
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}
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}
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if(flip == FLIP_PATTERN_VERTICAL || flip == FLIP_PATTERN_BOTH)
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{
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for(int i = 0; i < 3; ++i)
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{
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std::swap(pattern.data[i], pattern.data[6 + i]);
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}
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}
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}
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void CDrawLinesOperation::updateTiles(std::set<int3> & invalidated)
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{
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for(const int3 & coord : invalidated)
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{
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TerrainTile & tile = map->getTile(coord);
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ValidationResult result(false);
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if(!needUpdateTile(tile))
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continue;
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int bestPattern = -1;
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for(int k = 0; k < patterns.size(); ++k)
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{
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result = validateTile(patterns[k], coord);
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if(result.result)
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{
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bestPattern = k;
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break;
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}
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}
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if(bestPattern != -1)
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{
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updateTile(tile, patterns[bestPattern], result.flip);
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}
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}
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}
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CDrawLinesOperation::ValidationResult CDrawLinesOperation::validateTile(const LinePattern & pattern, const int3 & pos)
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{
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ValidationResult result(false);
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if(!canApplyPattern(pattern))
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return result;
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for(int flip = 0; flip < 4; ++flip)
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{
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if((flip == FLIP_PATTERN_BOTH) && !(pattern.hasHFlip && pattern.hasVFlip))
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continue;
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if((flip == FLIP_PATTERN_HORIZONTAL) && !pattern.hasHFlip)
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continue;
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if((flip == FLIP_PATTERN_VERTICAL) && !(pattern.hasVFlip))
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continue;
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LinePattern flipped = pattern;
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flipPattern(flipped, flip);
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bool validated = true;
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for(int i = 0; i < 9; ++i)
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{
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if(4 == i)
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continue;
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int cx = pos.x + (i % 3) - 1;
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int cy = pos.y + (i / 3) - 1;
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int3 currentPos(cx, cy, pos.z);
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bool hasSomething = map->isInTheMap(currentPos) && tileHasSomething(currentPos);
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if(ruleIsSomething(flipped.data[i]))
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{
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if(!hasSomething)
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{
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validated = false;
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break;
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}
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}
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else if(ruleIsNone(flipped.data[i]))
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{
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if(hasSomething)
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{
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validated = false;
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break;
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}
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}
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else
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{
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assert(ruleIsAny(flipped.data[i]));
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}
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}
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if(validated)
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{
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result.result = true;
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result.flip = flip;
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return result;
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}
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}
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return result;
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}
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std::string CDrawRoadsOperation::getLabel() const
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{
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return "Draw Roads";
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}
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std::string CDrawRiversOperation::getLabel() const
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{
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return "Draw Rivers";
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}
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void CDrawRoadsOperation::executeTile(TerrainTile & tile)
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{
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tile.roadType = const_cast<RoadType*>(VLC->roadTypeHandler->getByIndex(roadType.getNum()));
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}
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void CDrawRiversOperation::executeTile(TerrainTile & tile)
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{
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tile.riverType = const_cast<RiverType*>(VLC->riverTypeHandler->getByIndex(riverType.getNum()));
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}
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bool CDrawRoadsOperation::canApplyPattern(const LinePattern & pattern) const
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{
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return pattern.roadMapping.first >= 0;
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}
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bool CDrawRiversOperation::canApplyPattern(const LinePattern & pattern) const
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{
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return pattern.riverMapping.first >= 0;
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}
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bool CDrawRoadsOperation::needUpdateTile(const TerrainTile & tile) const
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{
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return tile.roadType->getId() != Road::NO_ROAD;
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}
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bool CDrawRiversOperation::needUpdateTile(const TerrainTile & tile) const
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{
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return tile.riverType->getId() != River::NO_RIVER;
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}
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bool CDrawRoadsOperation::tileHasSomething(const int3& pos) const
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{
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return map->getTile(pos).roadType->getId() != Road::NO_ROAD;
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}
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bool CDrawRiversOperation::tileHasSomething(const int3& pos) const
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{
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return map->getTile(pos).riverType->getId() != River::NO_RIVER;
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}
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void CDrawRoadsOperation::updateTile(TerrainTile & tile, const LinePattern & pattern, const int flip)
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{
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const std::pair<int, int> & mapping = pattern.roadMapping;
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tile.roadDir = gen->nextInt(mapping.first, mapping.second);
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tile.extTileFlags = (tile.extTileFlags & 0b11001111) | (flip << 4);
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}
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void CDrawRiversOperation::updateTile(TerrainTile & tile, const LinePattern & pattern, const int flip)
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{
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const std::pair<int, int> & mapping = pattern.riverMapping;
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tile.riverDir = gen->nextInt(mapping.first, mapping.second);
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tile.extTileFlags = (tile.extTileFlags & 0b00111111) | (flip << 2);
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}
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VCMI_LIB_NAMESPACE_END
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