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authorMattes D <github@xoft.cz>2014-09-15 16:50:40 +0200
committerMattes D <github@xoft.cz>2014-09-15 16:50:40 +0200
commitd772bc032f12bceac2d974ad9165597edabe5b0a (patch)
tree609648207d15494012b08f95e38b2a156ec50c93 /Tools
parentQtBiomeVisualiser: Extended zoom down below 100%. (diff)
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Diffstat (limited to 'Tools')
-rw-r--r--Tools/QtBiomeVisualiser/ChunkSource.cpp74
-rw-r--r--Tools/QtBiomeVisualiser/ChunkSource.h37
-rw-r--r--Tools/QtBiomeVisualiser/MainWindow.cpp14
3 files changed, 102 insertions, 23 deletions
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.cpp b/Tools/QtBiomeVisualiser/ChunkSource.cpp
index 44dcf1fa7..5658198f4 100644
--- a/Tools/QtBiomeVisualiser/ChunkSource.cpp
+++ b/Tools/QtBiomeVisualiser/ChunkSource.cpp
@@ -1,6 +1,8 @@
#include "Globals.h"
#include "ChunkSource.h"
+#include <QThread>
#include "Generating/BioGen.h"
+#include "inifile/iniFile.h"
@@ -138,9 +140,12 @@ static void biomesToImage(cChunkDef::BiomeMap & a_Biomes, Chunk::Image & a_Image
////////////////////////////////////////////////////////////////////////////////
// BioGenSource:
-BioGenSource::BioGenSource(cBiomeGen * a_BiomeGen) :
- m_BiomeGen(a_BiomeGen)
+BioGenSource::BioGenSource(QString a_WorldIniPath) :
+ m_WorldIniPath(a_WorldIniPath),
+ m_WorldIni(new cIniFile),
+ m_Mtx(QMutex::Recursive)
{
+ reload();
}
@@ -149,11 +154,14 @@ BioGenSource::BioGenSource(cBiomeGen * a_BiomeGen) :
void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk)
{
- // TODO: To make use of multicore machines, we need multiple copies of the biomegen
- // Right now we have only one, so we can let only one thread use it (hence the mutex)
- QMutexLocker lock(&m_Mtx);
+ cBiomeGenPtr biomeGen;
+ {
+ QMutexLocker lock(&m_Mtx);
+ biomeGen = getBiomeGen();
+ }
cChunkDef::BiomeMap biomes;
- m_BiomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+ biomeGen->GenBiomes(a_ChunkX, a_ChunkZ, biomes);
+ releaseBiomeGen(biomeGen);
Chunk::Image img;
biomesToImage(biomes, img);
a_DestChunk->setImage(img);
@@ -162,3 +170,57 @@ void BioGenSource::getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChu
+
+void BioGenSource::reload()
+{
+ {
+ QMutexLocker lock(&m_Mtx);
+ if (!m_WorldIni->ReadFile(m_WorldIniPath.toStdString()))
+ {
+ return;
+ }
+ m_AvailableGens.clear();
+ }
+}
+
+
+
+
+cBiomeGenPtr BioGenSource::getBiomeGen()
+{
+ QMutexLocker lock(&m_Mtx);
+
+ // Return a generator from the cache, if available:
+ if (!m_AvailableGens.empty())
+ {
+ cBiomeGenPtr res = m_AvailableGens.back();
+ m_AvailableGens.pop_back();
+ return res;
+ }
+
+ // No generator in cache available, create a new one:
+ int seed = m_WorldIni->GetValueSetI("Seed", "Seed", 0);
+ bool unused = false;
+ return cBiomeGenPtr(cBiomeGen::CreateBiomeGen(*m_WorldIni, seed, unused));
+}
+
+
+
+
+
+void BioGenSource::releaseBiomeGen(cBiomeGenPtr a_BiomeGen)
+{
+ QMutexLocker lock(&m_Mtx);
+ m_AvailableGens.push_back(a_BiomeGen);
+
+ // Trim the cache if there are too many gens:
+ int wantedNumGens = QThread::idealThreadCount();
+ if (m_AvailableGens.size() > (size_t)(4 * wantedNumGens))
+ {
+ m_AvailableGens.resize(wantedNumGens);
+ }
+}
+
+
+
+
diff --git a/Tools/QtBiomeVisualiser/ChunkSource.h b/Tools/QtBiomeVisualiser/ChunkSource.h
index d6eb2e3cb..7bbdda276 100644
--- a/Tools/QtBiomeVisualiser/ChunkSource.h
+++ b/Tools/QtBiomeVisualiser/ChunkSource.h
@@ -1,4 +1,5 @@
#pragma once
+#include <QString>
#include "Chunk.h"
@@ -7,6 +8,8 @@
// fwd:
class cBiomeGen;
+typedef std::shared_ptr<cBiomeGen> cBiomeGenPtr;
+class cIniFile;
@@ -21,6 +24,9 @@ public:
/** Fills the a_DestChunk with the biomes for the specified coords.
It is expected to be thread-safe and re-entrant. Usually QThread::idealThreadCount() threads are used. */
virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) = 0;
+
+ /** Forces a fresh reload of the source. Useful mainly for the generator, whose underlying definition file may have been changed. */
+ virtual void reload() = 0;
};
@@ -32,15 +38,36 @@ class BioGenSource :
public ChunkSource
{
public:
- /** Constructs a new BioGenSource based on the biome generator given.
- Takes ownership of a_BiomeGen */
- BioGenSource(cBiomeGen * a_BiomeGen);
+ /** Constructs a new BioGenSource based on the biome generator that is defined in the specified world.ini file. */
+ BioGenSource(QString a_WorldIniPath);
+ // ChunkSource overrides:
virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+ virtual void reload(void) override;
protected:
- std::shared_ptr<cBiomeGen> m_BiomeGen;
+ /** Path to the world.ini file from which the m_WorldIni is regenerated on reload requests. */
+ QString m_WorldIniPath;
+
+ /** Parsed contents of the world.ini file from which the biome generators are initialized.
+ Locked by m_Mtx to avoid multithreaded access. */
+ std::unique_ptr<cIniFile> m_WorldIni;
+
+ /** List of cBiomeGen instances that are "free" - aren't doing any generating at this moment.
+ Locked by m_Mtx to avoid multithreaded access. */
+ std::vector<cBiomeGenPtr> m_AvailableGens;
+
+ /** Guards m_AvailableGens and m_WorldIni against multithreaded access. */
QMutex m_Mtx;
+
+
+ /** Returns a cBiomeGen that can generate a new chunk's biomes.
+ Uses m_AvailableGens as a cache before creating a new generator. */
+ cBiomeGenPtr BioGenSource::getBiomeGen();
+
+ /** Puts the specified BiomeGen back to m_AvailableGens to make it available for next getBiomeGen() request.
+ Truncates m_AvailableGens if there are too many instances in there. */
+ void releaseBiomeGen(cBiomeGenPtr a_BiomeGen);
};
@@ -52,7 +79,9 @@ class AnvilSource :
public:
// TODO
+ // ChunkSource overrides:
virtual void getChunkBiomes(int a_ChunkX, int a_ChunkZ, ChunkPtr a_DestChunk) override;
+ virtual void reload() override {}
};
diff --git a/Tools/QtBiomeVisualiser/MainWindow.cpp b/Tools/QtBiomeVisualiser/MainWindow.cpp
index 8b98c0b0e..21fb1a0c0 100644
--- a/Tools/QtBiomeVisualiser/MainWindow.cpp
+++ b/Tools/QtBiomeVisualiser/MainWindow.cpp
@@ -39,19 +39,7 @@ MainWindow::~MainWindow()
void MainWindow::generate()
{
QString worldIni = QFileDialog::getOpenFileName(this, tr("Open world.ini"), QString(), tr("world.ini (world.ini)"));
- cIniFile ini;
- if (!ini.ReadFile(worldIni.toStdString()))
- {
- return;
- }
- int seed = ini.GetValueSetI("Seed", "Seed", 0);
- bool unused = false;
- cBiomeGen * biomeGen = cBiomeGen::CreateBiomeGen(ini, seed, unused);
- if (biomeGen == nullptr)
- {
- return;
- }
- m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(biomeGen)));
+ m_BiomeView->setChunkSource(std::shared_ptr<BioGenSource>(new BioGenSource(worldIni)));
m_BiomeView->redraw();
}