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automapper.cpp
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automapper.cpp
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/*
* automapper.cpp
* Copyright 2010-2016, Stefan Beller <stefanbeller@googlemail.com>
* Copyright 2016-2022, Thorbjørn Lindijer <bjorn@lindeijer.nl>
*
* This file is part of Tiled.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "automapper.h"
#include "automappingutils.h"
#include "containerhelpers.h"
#include "geometry.h"
#include "logginginterface.h"
#include "map.h"
#include "mapdocument.h"
#include "mapobject.h"
#include "maprenderer.h"
#include "objectgroup.h"
#include "tile.h"
#include <QDebug>
#include <QRandomGenerator>
#include <QtConcurrent>
#include <algorithm>
#include <random>
namespace Tiled {
static int wrap(int value, int bound)
{
return (value % bound + bound) % bound;
}
static const Cell &getWrappedCell(int x, int y, const TileLayer &tileLayer)
{
return tileLayer.cellAt(wrap(x, tileLayer.width()),
wrap(y, tileLayer.height()));
}
static const Cell &getBoundCell(int x, int y, const TileLayer &tileLayer)
{
return tileLayer.cellAt(qBound(0, x, tileLayer.width() - 1),
qBound(0, y, tileLayer.height() - 1));
}
static const Cell &getCell(int x, int y, const TileLayer &tileLayer)
{
return tileLayer.cellAt(x, y);
}
static double randomDouble()
{
thread_local std::mt19937 engine(std::random_device{}());
std::uniform_real_distribution<double> dist(0, 1);
return dist(engine);
}
template<typename Type, typename Container, typename Pred, typename... Args>
static inline Type &find_or_emplace(Container &container, Pred pred, Args&&... args)
{
auto it = std::find_if(container.begin(), container.end(), pred);
if (it != container.end())
return *it;
return container.emplace_back(std::forward<Args>(args)...);
}
enum class MatchType {
Unknown,
Tile,
Empty,
NonEmpty,
Other,
Negate,
Ignore,
};
static MatchType matchType(const Tile *tile)
{
if (!tile)
return MatchType::Unknown;
const QString matchType = tile->resolvedProperty(QStringLiteral("MatchType")).toString();
if (matchType == QLatin1String("Empty"))
return MatchType::Empty;
if (matchType == QLatin1String("NonEmpty"))
return MatchType::NonEmpty;
if (matchType == QLatin1String("Other"))
return MatchType::Other;
if (matchType == QLatin1String("Negate"))
return MatchType::Negate;
if (matchType == QLatin1String("Ignore"))
return MatchType::Ignore;
return MatchType::Tile;
}
/**
* The compile context enables re-using temporarily allocated memory while
* compiling the rules.
*/
struct CompileContext
{
QVector<Cell> anyOf;
QVector<Cell> noneOf;
QVector<Cell> inputCells;
};
struct ApplyContext
{
ApplyContext(QRegion *appliedRegion)
: appliedRegion(appliedRegion)
{}
// These regions store which parts of the map have already been altered by
// exactly this rule. We store all the altered parts to make sure there are
// no overlaps of the same rule applied to (neighbouring) places.
QHash<const Layer*, QRegion> appliedRegions;
QRegion *appliedRegion;
};
AutoMappingContext::AutoMappingContext(MapDocument *mapDocument)
: targetDocument(mapDocument)
, targetMap(targetDocument->map())
{
}
AutoMapper::AutoMapper(std::unique_ptr<Map> rulesMap, const QRegularExpression &mapNameFilter)
: mRulesMap(std::move(rulesMap))
, mRulesMapRenderer(MapRenderer::create(mRulesMap.get()))
, mMapNameFilter(mapNameFilter)
{
setupRuleMapProperties();
if (setupRuleMapLayers())
setupRules();
}
AutoMapper::~AutoMapper() = default;
QString AutoMapper::rulesMapFileName() const
{
return mRulesMap->fileName;
}
bool AutoMapper::ruleLayerNameUsed(const QString &ruleLayerName) const
{
return mRuleMapSetup.mInputLayerNames.contains(ruleLayerName);
}
template<typename Type>
bool checkOption(const QString &propertyName,
const QVariant &propertyValue,
const QLatin1String optionName,
Type &member)
{
if (propertyName.compare(optionName, Qt::CaseInsensitive) == 0) {
if (propertyValue.canConvert<Type>()) {
member = propertyValue.value<Type>();
return true;
}
}
return false;
}
template<typename Type>
bool checkRuleOption(const QString &propertyName,
const QVariant &propertyValue,
const QLatin1String optionName,
Type &member,
unsigned &setOptions,
RuleOptions::Enum optionFlag)
{
if (checkOption(propertyName, propertyValue, optionName, member)) {
setOptions |= optionFlag;
return true;
}
return false;
}
static bool checkRuleOptions(const QString &name,
const QVariant &value,
RuleOptions &options,
unsigned &setOptions)
{
if (checkRuleOption(name, value, QLatin1String("Probability"), options.skipChance, setOptions, RuleOptions::SkipChance)) {
options.skipChance = 1.0 - options.skipChance; // inverted so we don't have to keep inverting it later
return true;
}
if (checkRuleOption(name, value, QLatin1String("ModX"), options.modX, setOptions, RuleOptions::ModX)) {
options.modX = qMax<unsigned>(1, options.modX); // modulo 0 would crash
return true;
}
if (checkRuleOption(name, value, QLatin1String("ModY"), options.modY, setOptions, RuleOptions::ModY)) {
options.modY = qMax<unsigned>(1, options.modY); // modulo 0 would crash
return true;
}
if (checkRuleOption(name, value, QLatin1String("OffsetX"), options.offsetX, setOptions, RuleOptions::OffsetX))
return true;
if (checkRuleOption(name, value, QLatin1String("OffsetY"), options.offsetY, setOptions, RuleOptions::OffsetY))
return true;
if (checkRuleOption(name, value, QLatin1String("NoOverlappingOutput"), options.noOverlappingOutput, setOptions, RuleOptions::NoOverlappingOutput))
return true;
if (checkRuleOption(name, value, QLatin1String("Disabled"), options.disabled, setOptions, RuleOptions::Disabled))
return true;
if (checkRuleOption(name, value, QLatin1String("IgnoreLock"), options.ignoreLock, setOptions, RuleOptions::IgnoreLock))
return true;
return false;
}
void AutoMapper::setupRuleMapProperties()
{
unsigned setRuleOptions = 0;
bool noOverlappingRules = false;
QMapIterator<QString, QVariant> it(mRulesMap->properties());
while (it.hasNext()) {
it.next();
const QString &name = it.key();
const QVariant &value = it.value();
if (checkOption(name, value, QLatin1String("DeleteTiles"), mOptions.deleteTiles))
continue;
if (checkOption(name, value, QLatin1String("MatchOutsideMap"), mOptions.matchOutsideMap))
continue;
if (checkOption(name, value, QLatin1String("OverflowBorder"), mOptions.overflowBorder))
continue;
if (checkOption(name, value, QLatin1String("WrapBorder"), mOptions.wrapBorder))
continue;
if (checkOption(name, value, QLatin1String("AutomappingRadius"), mOptions.autoMappingRadius))
continue;
if (checkOption(name, value, QLatin1String("NoOverlappingRules"), noOverlappingRules))
continue;
if (checkOption(name, value, QLatin1String("MatchInOrder"), mOptions.matchInOrder)) {
mOptions.matchInOrderWasSet = true;
continue;
}
if (checkRuleOptions(name, value, mRuleOptions, setRuleOptions))
continue;
addWarning(tr("Ignoring unknown property '%2' = '%3' (rule map '%1')")
.arg(rulesMapFileName(),
name,
value.toString()),
SelectCustomProperty { rulesMapFileName(), name, mRulesMap.get() });
}
// Each of the border options imply MatchOutsideMap
if (mOptions.overflowBorder || mOptions.wrapBorder)
mOptions.matchOutsideMap = true;
// For backwards compatibility
if (!(setRuleOptions & RuleOptions::NoOverlappingOutput))
mRuleOptions.noOverlappingOutput = noOverlappingRules;
}
void AutoMapper::setupInputLayerProperties(InputLayer &inputLayer)
{
inputLayer.strictEmpty = false;
QMapIterator<QString, QVariant> it(inputLayer.tileLayer->properties());
while (it.hasNext()) {
it.next();
const QString &name = it.key();
const QVariant &value = it.value();
if (name.compare(QLatin1String("strictempty"), Qt::CaseInsensitive) == 0 ||
name.compare(QLatin1String("autoempty"), Qt::CaseInsensitive) == 0) {
if (value.canConvert(QMetaType::Bool)) {
inputLayer.strictEmpty = value.toBool();
continue;
}
}
addWarning(tr("Ignoring unknown property '%2' = '%3' on layer '%4' (rule map '%1')")
.arg(rulesMapFileName(),
name,
value.toString(),
inputLayer.tileLayer->name()),
SelectCustomProperty { rulesMapFileName(), name, inputLayer.tileLayer });
}
}
void AutoMapper::setupOutputSetProperties(OutputSet &outputSet, RuleMapSetup &setup)
{
for (const auto &outputLayer : outputSet.layers) {
const Layer *layer = outputLayer.layer;
Properties outputProperties;
QMapIterator<QString, QVariant> properiesIterator(layer->properties());
while (properiesIterator.hasNext()) {
properiesIterator.next();
const QString &name = properiesIterator.key();
const QVariant &value = properiesIterator.value();
if (name.compare(QLatin1String("probability"), Qt::CaseInsensitive) == 0) {
bool ok;
if (const qreal probability = value.toReal(&ok); ok) {
outputSet.probability = probability;
continue;
}
}
// Unrecognized properties are copied to target map when a related rule matches
outputProperties.insert(name, value);
}
if (!outputProperties.isEmpty())
setup.mOutputLayerProperties[layer] = std::move(outputProperties);
}
}
void AutoMapper::setupRuleOptionsArea(RuleOptionsArea &optionsArea, const MapObject *mapObject)
{
QMapIterator<QString, QVariant> it(mapObject->properties());
while (it.hasNext()) {
it.next();
const QString &name = it.key();
const QVariant &value = it.value();
if (checkRuleOptions(name, value, optionsArea.options, optionsArea.setOptions))
continue;
addWarning(tr("Ignoring unknown property '%2' = '%3' for rule options (rule map '%1')")
.arg(rulesMapFileName(),
name,
value.toString()),
SelectCustomProperty { rulesMapFileName(), name, mapObject });
}
}
bool AutoMapper::setupRuleMapLayers()
{
auto &setup = mRuleMapSetup;
Q_ASSERT(!setup.mLayerRegions);
Q_ASSERT(!setup.mLayerInputRegions);
Q_ASSERT(!setup.mLayerOutputRegions);
Q_ASSERT(setup.mInputSets.empty());
Q_ASSERT(setup.mOutputSets.empty());
Q_ASSERT(setup.mInputLayerNames.isEmpty());
QString error;
for (Layer *layer : mRulesMap->allLayers()) {
if (layer->isGroupLayer() || layer->isImageLayer())
continue;
const QString &ruleMapLayerName = layer->name();
// Ignore commented out layers
if (ruleMapLayerName.startsWith(QLatin1String("//")))
continue;
if (ruleMapLayerName.startsWith(QLatin1String("regions"), Qt::CaseInsensitive)) {
QString layerKind;
const TileLayer** layerPointer = nullptr;
if (ruleMapLayerName.compare(QLatin1String("regions"), Qt::CaseInsensitive) == 0) {
layerKind = QLatin1String("regions");
layerPointer = &setup.mLayerRegions;
} else if (ruleMapLayerName.endsWith(QLatin1String("input"), Qt::CaseInsensitive)) {
layerKind = QLatin1String("regions_input");
layerPointer = &setup.mLayerInputRegions;
} else if (ruleMapLayerName.endsWith(QLatin1String("output"), Qt::CaseInsensitive)) {
layerKind = QLatin1String("regions_output");
layerPointer = &setup.mLayerOutputRegions;
} else {
addWarning(tr("Layer '%1' is not recognized as a valid layer for Automapping.").arg(ruleMapLayerName),
SelectLayer { layer });
continue;
}
if (*layerPointer) {
error += tr("'%1' layer must not occur more than once.").arg(layerKind);
error += QLatin1Char('\n');
}
if (TileLayer *tileLayer = layer->asTileLayer()) {
*layerPointer = tileLayer;
} else {
error += tr("'regions_*' layers must be tile layers.");
error += QLatin1Char('\n');
}
continue;
}
if (ruleMapLayerName.compare(QLatin1String("rule_options"), Qt::CaseInsensitive) == 0) {
if (const ObjectGroup *objectGroup = layer->asObjectGroup()) {
for (const MapObject *mapObject : *objectGroup) {
if (mapObject->shape() != MapObject::Rectangle || !mapObject->cell().isEmpty()) {
addWarning(tr("Only rectangle objects are supported on 'rule_options' layers."),
JumpToObject { mapObject });
continue;
}
if (mapObject->rotation() != 0.0) {
addWarning(tr("Rotated rectangles are not supported on 'rule_options' layers."),
JumpToObject { mapObject });
continue;
}
RuleOptionsArea &optionsArea = setup.mRuleOptionsAreas.emplace_back();
optionsArea.area = objectTileRect(*mRulesMapRenderer, *mapObject);
setupRuleOptionsArea(optionsArea, mapObject);
}
} else {
error += tr("'rule_options' layers must be object layers.");
error += QLatin1Char('\n');
}
continue;
}
const int layerNameStartPosition = ruleMapLayerName.indexOf(QLatin1Char('_')) + 1;
// both 'rule' and 'output' layers will require and underscore and
// rely on the correct position detected of the underscore
if (layerNameStartPosition == 0) {
error += tr("Did you forget an underscore in layer '%1'?").arg(ruleMapLayerName);
error += QLatin1Char('\n');
continue;
}
const QString layerName = ruleMapLayerName.mid(layerNameStartPosition); // all characters behind the underscore (excluded)
QString setName = ruleMapLayerName.left(layerNameStartPosition); // all before the underscore (included)
if (setName.startsWith(QLatin1String("output"), Qt::CaseInsensitive))
setName.remove(0, 6);
else if (setName.startsWith(QLatin1String("inputnot"), Qt::CaseInsensitive))
setName.remove(0, 8);
else if (setName.startsWith(QLatin1String("input"), Qt::CaseInsensitive))
setName.remove(0, 5);
if (ruleMapLayerName.startsWith(QLatin1String("input"), Qt::CaseInsensitive)) {
const TileLayer *tileLayer = layer->asTileLayer();
if (!tileLayer) {
error += tr("'input_*' and 'inputnot_*' layers must be tile layers.");
error += QLatin1Char('\n');
continue;
}
setup.mInputLayerNames.insert(layerName);
InputLayer inputLayer;
inputLayer.tileLayer = tileLayer;
setupInputLayerProperties(inputLayer);
InputSet &inputSet = find_or_emplace<InputSet>(setup.mInputSets, [&setName] (const InputSet &set) {
return set.name == setName;
}, setName);
InputConditions &conditions = find_or_emplace<InputConditions>(inputSet.layers, [&layerName] (const InputConditions &conditions) {
return conditions.layerName == layerName;
}, layerName);
const bool isNotList = ruleMapLayerName.startsWith(QLatin1String("inputnot"), Qt::CaseInsensitive);
if (isNotList)
conditions.listNo.append(inputLayer);
else
conditions.listYes.append(inputLayer);
continue;
}
if (ruleMapLayerName.startsWith(QLatin1String("output"), Qt::CaseInsensitive)) {
if (layer->isTileLayer())
setup.mOutputTileLayerNames.insert(layerName);
else if (layer->isObjectGroup())
setup.mOutputObjectGroupNames.insert(layerName);
OutputSet &outputSet = find_or_emplace<OutputSet>(setup.mOutputSets, [&setName] (const OutputSet &set) {
return set.name == setName;
}, setName);
outputSet.layers.append({ layer, layerName });
continue;
}
addWarning(tr("Layer '%1' is not recognized as a valid layer for Automapping.").arg(ruleMapLayerName),
SelectLayer { layer });
}
if (setup.mInputSets.empty())
error += tr("No input_<name> or inputnot_<name> layer found!") + QLatin1Char('\n');
if (setup.mOutputSets.empty())
error += tr("No output_<name> layer found!") + QLatin1Char('\n');
// Make sure the input layers are always matched in the same order, which
// significantly speeds up the matching logic.
for (InputSet &set : setup.mInputSets) {
std::sort(set.layers.begin(), set.layers.end(),
[] (const InputConditions &a, const InputConditions &b) { return a.layerName < b.layerName; });
}
for (OutputSet &set : setup.mOutputSets)
setupOutputSetProperties(set, setup);
if (!error.isEmpty()) {
error = rulesMapFileName() + QLatin1Char('\n') + error;
mError += error;
return false;
}
return true;
}
static bool compareRuleRegion(const QRegion &r1, const QRegion &r2)
{
const QPoint p1 = r1.boundingRect().topLeft();
const QPoint p2 = r2.boundingRect().topLeft();
return p1.y() < p2.y() || (p1.y() == p2.y() && p1.x() < p2.x());
}
static void mergeRuleOptions(RuleOptions &self, const RuleOptions &other,
const unsigned setOptions)
{
if (setOptions & RuleOptions::SkipChance)
self.skipChance = other.skipChance;
if (setOptions & RuleOptions::ModX)
self.modX = other.modX;
if (setOptions & RuleOptions::ModY)
self.modY = other.modY;
if (setOptions & RuleOptions::OffsetX)
self.offsetX = other.offsetX;
if (setOptions & RuleOptions::OffsetY)
self.offsetY = other.offsetY;
if (setOptions & RuleOptions::NoOverlappingOutput)
self.noOverlappingOutput = other.noOverlappingOutput;
if (setOptions & RuleOptions::Disabled)
self.disabled = other.disabled;
if (setOptions & RuleOptions::IgnoreLock)
self.ignoreLock = other.ignoreLock;
}
void AutoMapper::setupRules()
{
const auto &setup = mRuleMapSetup;
Q_ASSERT(mRules.empty());
QRegion regionInput;
QRegion regionOutput;
if (setup.mLayerRegions)
regionInput = regionOutput = setup.mLayerRegions->region();
if (setup.mLayerInputRegions)
regionInput |= setup.mLayerInputRegions->region();
if (setup.mLayerOutputRegions)
regionOutput |= setup.mLayerOutputRegions->region();
const bool ignoreEmptyOutputs = !(mRuleMapSetup.mLayerRegions ||
mRuleMapSetup.mLayerInputRegions);
// When no input regions have been defined at all, derive them from the
// "input" and "inputnot" layers.
if (!setup.mLayerRegions && !setup.mLayerInputRegions) {
for (const InputSet &inputSet : std::as_const(mRuleMapSetup.mInputSets)) {
for (const InputConditions &conditions : inputSet.layers) {
for (const InputLayer &inputLayer : conditions.listNo)
regionInput |= inputLayer.tileLayer->region();
for (const InputLayer &inputLayer : conditions.listYes)
regionInput |= inputLayer.tileLayer->region();
}
}
} else if (!mOptions.matchInOrderWasSet) {
// For backwards compatibility, when the input regions have been
// explicitly defined, we default MatchInOrder to true.
mOptions.matchInOrder = true;
}
// When no output regions have been defined at all, derive them from the
// "output" layers.
if (!setup.mLayerRegions && !setup.mLayerOutputRegions) {
for (const OutputSet &outputSet : std::as_const(mRuleMapSetup.mOutputSets)) {
std::for_each(outputSet.layers.begin(),
outputSet.layers.end(),
[&] (const OutputLayer &outputLayer) {
const Layer *layer = outputLayer.layer;
if (layer->isTileLayer()) {
auto tileLayer = static_cast<const TileLayer*>(layer);
regionOutput |= tileLayer->region();
} else if (layer->isObjectGroup()) {
auto objectGroup = static_cast<const ObjectGroup*>(layer);
regionOutput |= tileRegionOfObjectGroup(*mRulesMapRenderer,
objectGroup);
}
});
}
}
QVector<QRegion> combinedRegions = coherentRegions(regionInput + regionOutput);
// Combined regions are sorted, in order to have a deterministic order in
// which the rules are applied.
std::sort(combinedRegions.begin(), combinedRegions.end(), compareRuleRegion);
// Then, they are split up in input and output region for each rule.
mRules.reserve(combinedRegions.size());
for (const QRegion &combinedRegion : combinedRegions) {
Rule &rule = mRules.emplace_back();
rule.inputRegion = combinedRegion & regionInput;
rule.outputRegion = combinedRegion & regionOutput;
rule.options = mRuleOptions;
for (const auto &optionsArea : setup.mRuleOptionsAreas)
if (combinedRegion.intersected(optionsArea.area) == combinedRegion)
mergeRuleOptions(rule.options, optionsArea.options, optionsArea.setOptions);
for (const OutputSet &outputSet : std::as_const(mRuleMapSetup.mOutputSets)) {
RuleOutputSet index;
if (compileOutputSet(index, outputSet, rule.outputRegion) || !ignoreEmptyOutputs)
rule.outputSets.add(index, outputSet.probability);
}
}
#ifndef QT_NO_DEBUG
for (const Rule &rule : mRules) {
const QRegion checkCoherent = rule.inputRegion.united(rule.outputRegion);
Q_ASSERT(coherentRegions(checkCoherent).size() == 1);
}
#endif
}
void AutoMapper::prepareAutoMap(AutoMappingContext &context)
{
setupWorkMapLayers(context);
context.targetDocument->unifyTilesets(*mRulesMap, context.newTilesets);
}
/**
* Makes sure all needed output layers are present in the working map.
*/
void AutoMapper::setupWorkMapLayers(AutoMappingContext &context) const
{
// Set up pointers to output tile layers in the target map.
// They are cloned when found in the target map, or created otherwise.
for (const QString &name : std::as_const(mRuleMapSetup.mOutputTileLayerNames)) {
auto &outputTileLayer = context.outputTileLayers[name];
if (outputTileLayer)
continue;
if (const auto layer = context.targetMap->findLayer(name, Layer::TileLayerType)) {
auto tileLayer = static_cast<TileLayer*>(layer);
auto clone = std::unique_ptr<TileLayer>(tileLayer->clone());
outputTileLayer = clone.get();
context.originalToOutputLayerMapping[tileLayer] = std::move(clone);
} else {
auto newLayer = std::make_unique<TileLayer>(name, QPoint(), context.targetMap->size());
outputTileLayer = newLayer.get();
context.newLayers.push_back(std::move(newLayer));
}
}
// Set up pointers to output object layers in the target map.
// They are created when they are not present, but not cloned since objects
// are not added directly.
for (const QString &name : std::as_const(mRuleMapSetup.mOutputObjectGroupNames)) {
auto &objectGroup = context.outputObjectGroups[name];
if (objectGroup)
continue;
objectGroup = static_cast<ObjectGroup*>(context.targetMap->findLayer(name, Layer::ObjectGroupType));
if (!objectGroup) {
auto newLayer = std::make_unique<ObjectGroup>(name, 0, 0);
objectGroup = newLayer.get();
context.newLayers.push_back(std::move(newLayer));
}
}
// Set up pointers to "set" layers (input layers in the target map). They
// don't need to be created if not present.
for (const QString &name : std::as_const(mRuleMapSetup.mInputLayerNames)) {
// Check whether this input layer is also an output layer, in which
// case we want to use its copy so we can see changes applied by
// earlier rules.
if (auto tileLayer = context.outputTileLayers.value(name))
context.inputLayers.insert(name, tileLayer);
else if (auto tileLayer = static_cast<TileLayer*>(context.targetMap->findLayer(name, Layer::TileLayerType)))
context.inputLayers.insert(name, tileLayer);
}
}
template<typename T>
static void appendUnique(QVector<T> &values, const T &value)
{
if (!values.contains(value))
values.append(value);
}
template<typename Callback>
static void forEachPointInRegion(const QRegion ®ion, Callback callback)
{
for (const QRect &rect : region)
for (int y = rect.top(); y <= rect.bottom(); ++y)
for (int x = rect.left(); x <= rect.right(); ++x)
callback(x, y);
}
/**
* Fills \a cells with the list of all cells which can be found within all
* tile layers within the given region.
*
* Only collects tiles with MatchType::Tile.
*/
static void collectCellsInRegion(const QVector<InputLayer> &list,
const QRegion &r,
QVector<Cell> &cells)
{
for (const InputLayer &inputLayer : list) {
forEachPointInRegion(r, [&] (int x, int y) {
const Cell &cell = inputLayer.tileLayer->cellAt(x, y);
switch (matchType(cell.tile())) {
case MatchType::Tile:
appendUnique(cells, cell);
break;
case MatchType::Empty:
appendUnique(cells, Cell());
break;
default:
break;
}
});
}
}
static bool isEmptyRegion(const TileLayer &tileLayer,
const QRegion ®ion)
{
for (const QRect &rect : region)
for (int y = rect.top(); y <= rect.bottom(); ++y)
for (int x = rect.left(); x <= rect.right(); ++x)
if (!tileLayer.cellAt(x, y).isEmpty())
return false;
return true;
}
/**
* Sets up a small data structure for this rule that is optimized for matching.
*/
bool AutoMapper::compileRule(QVector<RuleInputSet> &inputSets,
const Rule &rule,
const AutoMappingContext &context) const
{
CompileContext compileContext;
for (const InputSet &inputSet : std::as_const(mRuleMapSetup.mInputSets)) {
RuleInputSet index;
if (compileInputSet(index, inputSet, rule.inputRegion, compileContext, context))
inputSets.append(std::move(index));
}
return !inputSets.isEmpty();
}
/**
* After optimization, only one of \a anyOf or \a noneOf can contain any cells.
*
* Returns whether this combination can match at all. A match is not possible,
* when \a anyOf is non-empty, but all cells in \a anyOf are also in \a noneOf.
*/
static bool optimizeAnyNoneOf(QVector<Cell> &anyOf, QVector<Cell> &noneOf)
{
auto compareCell = [] (const Cell &a, const Cell &b) {
if (a.tileset() != b.tileset())
return a.tileset() < b.tileset();
if (a.tileId() != b.tileId())
return a.tileId() < b.tileId();
return a.flags() < b.flags();
};
// First sort and erase duplicates
if (!noneOf.isEmpty()) {
std::stable_sort(noneOf.begin(), noneOf.end(), compareCell);
noneOf.erase(std::unique(noneOf.begin(), noneOf.end()), noneOf.end());
}
// If there are any specific tiles desired, we don't need the noneOf
if (!anyOf.isEmpty()) {
std::stable_sort(anyOf.begin(), anyOf.end(), compareCell);
anyOf.erase(std::unique(anyOf.begin(), anyOf.end()), anyOf.end());
// Remove all "noneOf" tiles from "anyOf" and clear "noneOf"
for (auto i = anyOf.begin(), j = noneOf.begin(); i != anyOf.end() && j != noneOf.end();) {
if (compareCell(*i, *j)) {
++i;
} else if (compareCell(*j, *i)) {
++j;
} else {
i = anyOf.erase(i);
++j;
}
}
noneOf.clear();
// If now no tiles are allowed anymore, this rule can never match
if (anyOf.isEmpty())
return false;
}
return true;
}
/**
* Compiles one of a rule's input sets.
*
* Returns false when it detects a missing input layer would prevent the input
* set from ever matching, or when a rule contradicts itself.
*/
bool AutoMapper::compileInputSet(RuleInputSet &index,
const InputSet &inputSet,
const QRegion &inputRegion,
CompileContext &compileContext,
const AutoMappingContext &context) const
{
const QPoint topLeft = inputRegion.boundingRect().topLeft();
QVector<Cell> &anyOf = compileContext.anyOf;
QVector<Cell> &noneOf = compileContext.noneOf;
QVector<Cell> &inputCells = compileContext.inputCells;
for (const InputConditions &conditions : inputSet.layers) {
inputCells.clear();
bool canMatch = true;
RuleInputLayer layer;
layer.targetLayer = context.inputLayers.value(conditions.layerName, &dummy);
forEachPointInRegion(inputRegion, [&] (int x, int y) {
anyOf.clear();
noneOf.clear();
bool negate = false;
for (const InputLayer &inputLayer : conditions.listYes) {
const Cell &cell = inputLayer.tileLayer->cellAt(x, y);
switch (matchType(cell.tile())) {
case MatchType::Unknown:
if (inputLayer.strictEmpty)
anyOf.append(cell);
break;
case MatchType::Tile:
anyOf.append(cell);
break;
case MatchType::Empty:
anyOf.append(Cell());
break;
case MatchType::NonEmpty:
noneOf.append(Cell());
break;
case MatchType::Other:
// The "any other tile" case is implemented as "none of the
// used tiles".
if (inputCells.isEmpty())
collectCellsInRegion(conditions.listYes, inputRegion, inputCells);
noneOf.append(inputCells);
break;
case MatchType::Negate:
negate = true;
break;
case MatchType::Ignore:
break;
}
}
for (const InputLayer &inputLayer : conditions.listNo) {
const Cell &cell = inputLayer.tileLayer->cellAt(x, y);
switch (matchType(cell.tile())) {
case MatchType::Unknown:
if (inputLayer.strictEmpty)
noneOf.append(cell);
break;
case MatchType::Tile:
noneOf.append(cell);
break;
case MatchType::Empty:
noneOf.append(Cell());
break;
case MatchType::NonEmpty:
anyOf.append(Cell());
break;
case MatchType::Other:
// This is the "not any other tile" case, which is
// implemented as "any of the used tiles"
if (inputCells.isEmpty())
collectCellsInRegion(conditions.listYes, inputRegion, inputCells);
anyOf.append(inputCells);
break;
case MatchType::Negate:
negate = true;
break;
case MatchType::Ignore:
break;
}
}
// For backwards compatibility, when the input regions have been
// explicitly defined and no "any" and no "none" tiles are defined
// at this location, the rule will not accept any of the "any"
// tiles used elsewhere in this rule, nor the empty tile.
if (mRuleMapSetup.mLayerRegions || mRuleMapSetup.mLayerInputRegions) {
if (anyOf.isEmpty() && conditions.listNo.isEmpty()) {
if (inputCells.isEmpty())
collectCellsInRegion(conditions.listYes, inputRegion, inputCells);
noneOf.append(inputCells);
noneOf.append(Cell());
}
}
if (negate)
std::swap(anyOf, noneOf);
if (!optimizeAnyNoneOf(anyOf, noneOf)) {
canMatch = false;
return;
}
// When the input layer is missing, it is considered empty. In this
// case, we can drop this input set when empty tiles are not
// allowed here.
if (layer.targetLayer == &dummy) {
const bool emptyAllowed = (anyOf.isEmpty() ||
std::any_of(anyOf.cbegin(),
anyOf.cend(),
[] (const Cell &cell) { return cell.isEmpty(); }))
&& std::none_of(noneOf.cbegin(),
noneOf.cend(),
[] (const Cell &cell) { return cell.isEmpty(); });
if (!emptyAllowed)
canMatch = false;
}
if (anyOf.size() > 0 || noneOf.size() > 0) {
index.cells.append(anyOf);
index.cells.append(noneOf);
RuleInputLayerPos pos;
pos.x = x - topLeft.x();
pos.y = y - topLeft.y();
pos.anyCount = anyOf.size();
pos.noneCount = noneOf.size();
index.positions.append(pos);
++layer.posCount;
}
});
if (!canMatch)
return false;
if (layer.posCount > 0)
index.layers.append(layer);
}
return true;
}
bool AutoMapper::compileOutputSet(RuleOutputSet &index,
const OutputSet &outputSet,
const QRegion &outputRegion) const
{
for (const OutputLayer &outputLayer : outputSet.layers) {
const Layer *from = outputLayer.layer;
switch (from->layerType()) {