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#include "ParticleDef.h"
#include "string/convert.h"
#include "util/ScopedBoolLock.h"
namespace particles
{
sigc::signal<void>& ParticleDef::signal_changed()
{
return _changedSignal;
}
float ParticleDef::getDepthHack()
{
ensureParsed();
return _depthHack;
}
void ParticleDef::setDepthHack(float value)
{
ensureParsed();
_depthHack = value;
onParsedContentsChanged();
}
std::size_t ParticleDef::getNumStages()
{
ensureParsed();
return _stages.size();
}
const std::shared_ptr<IStageDef>& ParticleDef::getStage(std::size_t stageNum)
{
ensureParsed();
return _stages[stageNum].first;
}
std::size_t ParticleDef::addParticleStage()
{
ensureParsed();
// Create and append a new stage
appendStage(std::make_shared<StageDef>());
onParticleChanged();
return _stages.size() - 1;
}
void ParticleDef::removeParticleStage(std::size_t index)
{
ensureParsed();
if (index < _stages.size())
{
// Disconnect the change signal before removal
_stages[index].second.disconnect();
_stages.erase(_stages.begin() + index);
}
onParticleChanged();
}
void ParticleDef::swapParticleStages(std::size_t index, std::size_t index2)
{
ensureParsed();
if (index >= _stages.size() || index2 >= _stages.size() || index == index2)
{
return;
}
std::swap(_stages[index], _stages[index2]);
onParticleChanged();
}
void ParticleDef::appendStage(const StageDef::Ptr& stage)
{
// Add to list and connect the incoming stage's changed signal
_stages.emplace_back(std::make_pair(
stage,
stage->signal_changed().connect(sigc::mem_fun(this, &ParticleDef::onParticleChanged)))
);
// This method is only used internally, no signal emission
}
void ParticleDef::copyFrom(const Ptr& other)
{
ensureParsed();
{
// Suppress signals until we're done copying
util::ScopedBoolLock changeLock(_blockChangedSignal);
setDepthHack(other->getDepthHack());
_stages.clear();
// Copy each stage
for (std::size_t i = 0; i < other->getNumStages(); ++i)
{
auto stage = std::make_shared<StageDef>();
stage->copyFrom(other->getStage(i));
appendStage(stage);
}
}
// We've changed all the stages, so emit the changed signal now (#4411)
onParticleChanged();
}
bool ParticleDef::isEqualTo(const Ptr& other)
{
// Compare depth hack flag
if (getDepthHack() != other->getDepthHack()) return false;
// Compare number of stages
if (getNumStages() != other->getNumStages()) return false;
// Compare each stage
for (std::size_t i = 0; i < getNumStages(); ++i)
{
if (!getStage(i)->isEqualTo(other->getStage(i))) return false;
}
// All checks passed => equal
return true;
}
void ParticleDef::onBeginParsing()
{
// Clear out the particle def (except the name) before parsing
clear();
}
void ParticleDef::parseFromTokens(parser::DefTokeniser& tokeniser)
{
// Any global keywords will come first, after which we get a series of
// brace-delimited stages.
while (tokeniser.hasMoreTokens())
{
auto token = tokeniser.nextToken();
if (token == "depthHack")
{
setDepthHack(string::convert<float>(tokeniser.nextToken()));
}
else if (token == "{")
{
// Construct/Parse the stage from the tokens
// Append to the ParticleDef
appendStage(StageDef::Parse(tokeniser));
}
}
}
void ParticleDef::onSyntaxBlockAssigned(const decl::DeclarationBlockSyntax& block)
{
EditableDeclaration<IParticleDef>::onSyntaxBlockAssigned(block);
_changedSignal.emit();
}
std::string ParticleDef::generateSyntax()
{
std::stringstream stream;
// Don't use scientific notation when exporting floats
stream << std::fixed;
stream.precision(3); // Three post-comma digits precision
stream << "\n"; // initial line break after the opening brace
if (_depthHack > 0)
{
stream << "\tdepthHack\t" << _depthHack << std::endl;
}
// Write stages, one by one
for (const auto& stage : _stages)
{
stream << *std::static_pointer_cast<StageDef>(stage.first);
}
stream << "\n"; // final line break before the closing brace
return stream.str();
}
void ParticleDef::onParticleChanged()
{
if (_blockChangedSignal) return;
onParsedContentsChanged();
_changedSignal.emit();
}
}
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