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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/
Copyright (c) 2000-2012 Torus Knot Software Ltd
Also see acknowledgements in Readme.html
You may use this sample code for anything you like, it is not covered by the
same license as the rest of the engine.
-----------------------------------------------------------------------------
*/
#ifndef __EndlessWorld_H__
#define __EndlessWorld_H__
//#define PAGING
//#define ENDLESS
#ifdef ENDLESS
// max range for a int16
#define TERRAIN_PAGE_MIN_X (-0x7FFF)
#define TERRAIN_PAGE_MIN_Y (-0x7FFF)
#define TERRAIN_PAGE_MAX_X 0x7FFF
#define TERRAIN_PAGE_MAX_Y 0x7FFF
#else
#define TERRAIN_PAGE_MIN_X -1
#define TERRAIN_PAGE_MIN_Y -1
#define TERRAIN_PAGE_MAX_X 1
#define TERRAIN_PAGE_MAX_Y 1
#endif
#include "SdkSample.h"
#include "OgreTerrain.h"
#include "OgreTerrainGroup.h"
#include "OgreTerrainQuadTreeNode.h"
#include "OgreTerrainMaterialGeneratorA.h"
#include "OgreTerrainPagedWorldSection.h"
#include "OgreTerrainPaging.h"
#include "PerlinNoiseTerrainGenerator.h"
#define TERRAIN_FILE_PREFIX String("EndlessWorldTerrain")
#define TERRAIN_FILE_SUFFIX String("dat")
#define TERRAIN_WORLD_SIZE 12000.0f
#define TERRAIN_SIZE 513
#define HOLD_LOD_DISTANCE 3000.0
using namespace Ogre;
using namespace OgreBites;
class _OgreSampleClassExport Sample_EndlessWorld : public SdkSample
{
public:
Sample_EndlessWorld()
: mTerrainGroup(0)
, mTerrainPaging(0)
, mPageManager(0)
, mPagedWorld(0)
, mTerrainPagedWorldSection(0)
, mPerlinNoiseTerrainGenerator(0)
, mLodStatus(false)
, mAutoLod(true)
, mFly(true)
, mFallVelocity(0)
, mTerrainPos(0,0,0)
{
mInfo["Title"] = "Endless World";
mInfo["Description"] = "Demonstrates use of the terrain plugin with paging option.";
mInfo["Thumbnail"] = "thumb_terrain.png";
mInfo["Category"] = "Environment";
mInfo["Help"] = "Left click and drag anywhere in the scene to look around. Let go again to show "
"cursor and access widgets. Use WASD keys to move. You can increase/decrease terrains' LOD level using Page Up/Page Down."
"Use G to generate another random terrain";
}
void testCapabilities(const RenderSystemCapabilities* caps)
{
if (!caps->hasCapability(RSC_VERTEX_PROGRAM) || !caps->hasCapability(RSC_FRAGMENT_PROGRAM))
{
OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "Your graphics card does not support vertex or fragment shaders, "
"so you cannot run this sample. Sorry!", "Sample_EndlessWorld::testCapabilities");
}
}
StringVector getRequiredPlugins()
{
StringVector names;
return names;
}
bool frameRenderingQueued(const FrameEvent& evt)
{
if (!mFly)
{
// clamp to terrain
Vector3 camPos = mCamera->getPosition();
Ray ray;
ray.setOrigin(Vector3(camPos.x, mTerrainPos.y + 10000, camPos.z));
ray.setDirection(Vector3::NEGATIVE_UNIT_Y);
TerrainGroup::RayResult rayResult = mTerrainGroup->rayIntersects(ray);
const Real distanceAboveTerrain = 50;
if (rayResult.hit)
mCamera->setPosition(camPos.x, rayResult.position.y + distanceAboveTerrain, camPos.z);
}
if (mTerrainGroup->isDerivedDataUpdateInProgress())
{
mTrayMgr->moveWidgetToTray(mInfoLabel, TL_TOP, 0);
mInfoLabel->show();
mInfoLabel->setCaption("Building terrain...");
}
else
{
mTrayMgr->removeWidgetFromTray(mInfoLabel);
mInfoLabel->hide();
}
if (mLodStatus)
{
for(LabelList::iterator li = mLodStatusLabelList.begin(); li != mLodStatusLabelList.end(); li++)
{
mLodInfoOverlayContainer->_removeChild(*li);
OverlayManager::getSingleton().destroyOverlayElement(*li);
}
mLodStatusLabelList.clear();
TerrainGroup::TerrainIterator ti = mTerrainGroup->getTerrainIterator();
while(ti.hasMoreElements())
{
Terrain* t = ti.getNext()->instance;
if (!t)
continue;
Vector3 pt = mCamera->getProjectionMatrix() * (mCamera->getViewMatrix() * t->getPosition());
Real x = (pt.x / 2) + 0.5f;
Real y = 1 - ((pt.y / 2) + 0.5f);
String lName = StringConverter::toString((unsigned long)(t))+"/"+"LodInfoLabel";
OverlayElement *l = OverlayManager::getSingleton().createOverlayElement("TextArea", lName);
l->setCaption("Target="+StringConverter::toString(t->getTargetLodLevel())+"\nHighest="+
StringConverter::toString(t->getHighestLodLoaded())+"\nPrepared="+
StringConverter::toString(t->getHighestLodPrepared())
);
l->setPosition(x, y);
l->setDimensions(0.1, 0.1); // center text in label and its position
l->setParameter("font_name", "StarWars");
l->setParameter("char_height", "0.02f");
l->setColour(ColourValue(1.0,0.0,0.0));
mLodInfoOverlayContainer->addChild(l);
mLodStatusLabelList.push_back(l);
}
}
mTerrainGroup->autoUpdateLodAll(false, Any( Real(HOLD_LOD_DISTANCE) ));
return SdkSample::frameRenderingQueued(evt); // don't forget the parent updates!
}
bool keyPressed (const OIS::KeyEvent &e)
{
#if OGRE_PLATFORM != OGRE_PLATFORM_APPLE_IOS
switch (e.key)
{
case OIS::KC_S:
// CTRL-S to save
if (mKeyboard->isKeyDown(OIS::KC_LCONTROL) || mKeyboard->isKeyDown(OIS::KC_RCONTROL))
{
mTerrainGroup->saveAllTerrains(true);
}
else
return SdkSample::keyPressed(e);
break;
case OIS::KC_LSHIFT:
case OIS::KC_RSHIFT:
mCameraMan->setTopSpeed(1000);
break;
case OIS::KC_PGUP:
{
mAutoBox->setChecked(false);
TerrainGroup::TerrainIterator ti = mTerrainGroup->getTerrainIterator();
while(ti.hasMoreElements())
{
Terrain* t = ti.getNext()->instance;
if (t)
t->increaseLodLevel();
}
}
break;
case OIS::KC_PGDOWN:
{
mAutoBox->setChecked(false);
TerrainGroup::TerrainIterator ti = mTerrainGroup->getTerrainIterator();
while(ti.hasMoreElements())
{
Terrain* t = ti.getNext()->instance;
if (t)
t->decreaseLodLevel();
}
}
break;
// generate new random offset, to make terrains different
case OIS::KC_G:
if(mPerlinNoiseTerrainGenerator)
{
// random a new origin point
mPerlinNoiseTerrainGenerator->randomize();
// reload all terrains
TerrainGroup::TerrainIterator ti = mTerrainGroup->getTerrainIterator();
while(ti.hasMoreElements())
{
TerrainGroup::TerrainSlot* slot = ti.getNext();
PageID pageID = mTerrainGroup->packIndex( slot->x, slot->y );
mTerrainPagedWorldSection->unloadPage(pageID);
mTerrainPagedWorldSection->loadPage(pageID);
}
}
break;
default:
return SdkSample::keyPressed(e);
}
#endif
return true;
}
void checkBoxToggled(CheckBox* box)
{
if (box == mFlyBox)
{
mFly = mFlyBox->isChecked();
}
else if (box == mLodStatusBox)
{
mLodStatus = mLodStatusBox->isChecked();
if (!mLodStatus)
{
for(LabelList::iterator li = mLodStatusLabelList.begin(); li != mLodStatusLabelList.end(); li++)
{
mLodInfoOverlayContainer->_removeChild(*li);
OverlayManager::getSingleton().destroyOverlayElement(*li);
}
mLodStatusLabelList.clear();
}
}
else if (box == mAutoBox)
{
if( mTerrainGroup )
{
if(!mAutoLod && mAutoBox->isChecked())
{
mTerrainGroup->setAutoUpdateLod( TerrainAutoUpdateLodFactory::getAutoUpdateLod(BY_DISTANCE) );
mAutoLod = true;
}
else if(mAutoLod && !mAutoBox->isChecked())
{
mTerrainGroup->setAutoUpdateLod( TerrainAutoUpdateLodFactory::getAutoUpdateLod(NONE) ); // Why? Changed in last revision
mAutoLod = false;
}
}
}
}
protected:
TerrainGlobalOptions* mTerrainGlobals;
TerrainGroup* mTerrainGroup;
TerrainPaging* mTerrainPaging;
PageManager* mPageManager;
PagedWorld* mPagedWorld;
TerrainPagedWorldSection* mTerrainPagedWorldSection;
PerlinNoiseTerrainGenerator* mPerlinNoiseTerrainGenerator;
bool mLodStatus;
bool mAutoLod;
/// This class just pretends to provide procedural page content to avoid page loading
class DummyPageProvider : public PageProvider
{
public:
bool prepareProceduralPage(Page* page, PagedWorldSection* section) { return true; }
bool loadProceduralPage(Page* page, PagedWorldSection* section) { return true; }
bool unloadProceduralPage(Page* page, PagedWorldSection* section) { return true; }
bool unprepareProceduralPage(Page* page, PagedWorldSection* section) { return true; }
};
DummyPageProvider mDummyPageProvider;
bool mFly;
Real mFallVelocity;
Vector3 mTerrainPos;
CheckBox* mFlyBox;
OgreBites::Label* mInfoLabel;
typedef std::list<OverlayElement*> LabelList;
LabelList mLodStatusLabelList;
Overlay *mLodInfoOverlay;
OverlayContainer *mLodInfoOverlayContainer;
CheckBox *mLodStatusBox;
CheckBox *mAutoBox;
void configureTerrainDefaults(Light* l)
{
// Configure global
mTerrainGlobals->setMaxPixelError(8);
// testing composite map
mTerrainGlobals->setCompositeMapDistance(3000);
//mTerrainGlobals->setUseRayBoxDistanceCalculation(true);
mTerrainGlobals->getDefaultMaterialGenerator()->setLightmapEnabled(false);
mTerrainGlobals->setCompositeMapAmbient(mSceneMgr->getAmbientLight());
//mTerrainGlobals->setCompositeMapAmbient(ColourValue::Red);
mTerrainGlobals->setCompositeMapDiffuse(l->getDiffuseColour());
// Configure default import settings for if we use imported image
Terrain::ImportData& defaultimp = mTerrainGroup->getDefaultImportSettings();
defaultimp.terrainSize = TERRAIN_SIZE;
defaultimp.worldSize = TERRAIN_WORLD_SIZE;
defaultimp.inputScale = 600;
defaultimp.minBatchSize = 33;
defaultimp.maxBatchSize = 65;
// textures
defaultimp.layerList.resize(3);
defaultimp.layerList[0].worldSize = 100;
defaultimp.layerList[0].textureNames.push_back("dirt_grayrocky_diffusespecular.dds");
defaultimp.layerList[0].textureNames.push_back("dirt_grayrocky_normalheight.dds");
defaultimp.layerList[1].worldSize = 30;
defaultimp.layerList[1].textureNames.push_back("grass_green-01_diffusespecular.dds");
defaultimp.layerList[1].textureNames.push_back("grass_green-01_normalheight.dds");
defaultimp.layerList[2].worldSize = 200;
defaultimp.layerList[2].textureNames.push_back("growth_weirdfungus-03_diffusespecular.dds");
defaultimp.layerList[2].textureNames.push_back("growth_weirdfungus-03_normalheight.dds");
}
/*-----------------------------------------------------------------------------
| Extends setupView to change some initial camera settings for this sample.
-----------------------------------------------------------------------------*/
void setupView()
{
SdkSample::setupView();
// put camera at world center, so that it's difficult to reach the edge
Vector3 worldCenter(
(TERRAIN_PAGE_MAX_X+TERRAIN_PAGE_MIN_X) / 2 * TERRAIN_WORLD_SIZE,
0,
-(TERRAIN_PAGE_MAX_Y+TERRAIN_PAGE_MIN_Y) / 2 * TERRAIN_WORLD_SIZE
);
mCamera->setPosition( mTerrainPos+worldCenter );
mCamera->lookAt(mTerrainPos);
mCamera->setNearClipDistance(0.1);
mCamera->setFarClipDistance(50000);
if (mRoot->getRenderSystem()->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE))
{
mCamera->setFarClipDistance(0); // enable infinite far clip distance if we can
}
}
void setupControls()
{
mTrayMgr->showCursor();
// make room for the controls
mTrayMgr->showLogo(TL_TOPRIGHT);
mTrayMgr->showFrameStats(TL_TOPRIGHT);
mTrayMgr->toggleAdvancedFrameStats();
mInfoLabel = mTrayMgr->createLabel(TL_TOP, "TInfo", "", 350);
mFlyBox = mTrayMgr->createCheckBox(TL_BOTTOM, "Fly", "Fly");
mFlyBox->setChecked(false, true);
mLodStatusBox = mTrayMgr->createCheckBox(TL_BOTTOM, "LODStatus", "LOD Status");
mLodStatusBox->setChecked(false, true);
mAutoBox = mTrayMgr->createCheckBox(TL_BOTTOM, "LODAuto", "Auto LOD");
mAutoBox->setChecked(true, true);
// a friendly reminder
StringVector names;
names.push_back("Help");
mTrayMgr->createParamsPanel(TL_TOPLEFT, "Help", 100, names)->setParamValue(0, "H/F1");
}
class SimpleTerrainDefiner : public TerrainPagedWorldSection::TerrainDefiner
{
public:
virtual void define(TerrainGroup* terrainGroup, long x, long y)
{
Image img;
img.load("terrain.png", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
if (x % 2)
img.flipAroundY();
if (y % 2)
img.flipAroundX();
terrainGroup->defineTerrain(x, y, &img);
}
};
void setupContent()
{
mTerrainGlobals = OGRE_NEW TerrainGlobalOptions();
setupControls();
mCameraMan->setTopSpeed(100);
setDragLook(true);
MaterialManager::getSingleton().setDefaultTextureFiltering(TFO_ANISOTROPIC);
MaterialManager::getSingleton().setDefaultAnisotropy(7);
mSceneMgr->setFog(FOG_LINEAR, ColourValue(0.7, 0.7, 0.8), 0, 4000, 10000);
LogManager::getSingleton().setLogDetail(LL_BOREME);
Vector3 lightdir(0.55, -0.3, 0.75);
lightdir.normalise();
Light* l = mSceneMgr->createLight("tstLight");
l->setType(Light::LT_DIRECTIONAL);
l->setDirection(lightdir);
l->setDiffuseColour(ColourValue::White);
l->setSpecularColour(ColourValue(0.4, 0.4, 0.4));
mSceneMgr->setAmbientLight(ColourValue(0.2, 0.2, 0.2));
mTerrainGroup = OGRE_NEW TerrainGroup(mSceneMgr, Terrain::ALIGN_X_Z, TERRAIN_SIZE, TERRAIN_WORLD_SIZE);
mTerrainGroup->setFilenameConvention(TERRAIN_FILE_PREFIX, TERRAIN_FILE_SUFFIX);
mTerrainGroup->setOrigin(mTerrainPos);
mTerrainGroup->setAutoUpdateLod( TerrainAutoUpdateLodFactory::getAutoUpdateLod(BY_DISTANCE) );
configureTerrainDefaults(l);
// Paging setup
mPageManager = OGRE_NEW PageManager();
// Since we're not loading any pages from .page files, we need a way just
// to say we've loaded them without them actually being loaded
mPageManager->setPageProvider(&mDummyPageProvider);
mPageManager->addCamera(mCamera);
mPageManager->setDebugDisplayLevel(0);
mTerrainPaging = OGRE_NEW TerrainPaging(mPageManager);
mPagedWorld = mPageManager->createWorld();
mTerrainPagedWorldSection = mTerrainPaging->createWorldSection(mPagedWorld, mTerrainGroup, 400, 500,
TERRAIN_PAGE_MIN_X, TERRAIN_PAGE_MIN_Y,
TERRAIN_PAGE_MAX_X, TERRAIN_PAGE_MAX_Y);
#ifdef ENDLESS
mPerlinNoiseTerrainGenerator = OGRE_NEW PerlinNoiseTerrainGenerator;
mTerrainPagedWorldSection->setDefiner( mPerlinNoiseTerrainGenerator );
#else
#ifndef PAGING
mTerrainPagedWorldSection->setDefiner( OGRE_NEW SimpleTerrainDefiner );
#endif
#endif
mTerrainGroup->freeTemporaryResources();
mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox");
// setup LOD info overlay
mLodInfoOverlay = OverlayManager::getSingleton().create("LODInfoOverlay");
mLodInfoOverlay->setZOrder(10);
mLodInfoOverlayContainer = (OverlayContainer*)OverlayManager::getSingleton().createOverlayElement("Panel", "LODInfoOverlayPanel");
mLodInfoOverlayContainer->setDimensions(1.0, 1.0);
mLodInfoOverlayContainer->setPosition(0.0, 0.0);
mLodInfoOverlay->add2D(mLodInfoOverlayContainer);
mLodInfoOverlay->show();
}
void _shutdown()
{
if(mTerrainPaging)
{
OGRE_DELETE mTerrainPaging;
mPageManager->destroyWorld( mPagedWorld );
OGRE_DELETE mPageManager;
}
OGRE_DELETE mTerrainGlobals;
for(LabelList::iterator li = mLodStatusLabelList.begin(); li != mLodStatusLabelList.end(); li++)
{
mLodInfoOverlayContainer->_removeChild(*li);
OverlayManager::getSingleton().destroyOverlayElement(*li);
}
mLodStatusLabelList.clear();
OverlayManager::getSingleton().destroy(mLodInfoOverlay);
OverlayManager::getSingleton().destroyOverlayElement(mLodInfoOverlayContainer);
SdkSample::_shutdown();
}
};
#endif
compile and run.
2. When the 3x3 terrain pages are built save all terrains with CTRL+S.
3 When the terrain pages are saved exit.
4. Uncoment the statement
compile an run.
When the second page is loading the crash occurs.
I hope this to be usefull.