forked from mirror/openmw-tes3mp
a47de06492
This seems to be the resolution the original engine is using. The change also significantly reduces cell loading time.
337 lines
14 KiB
C++
337 lines
14 KiB
C++
#include "globalmap.hpp"
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#include <boost/filesystem.hpp>
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#include <boost/lexical_cast.hpp>
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#include <OgreImage.h>
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#include <OgreTextureManager.h>
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#include <OgreColourValue.h>
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#include <OgreHardwareVertexBuffer.h>
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#include <OgreRoot.h>
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#include <OgreHardwarePixelBuffer.h>
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#include <components/loadinglistener/loadinglistener.hpp>
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#include <components/esm/globalmap.hpp>
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#include "../mwbase/environment.hpp"
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#include "../mwbase/world.hpp"
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#include "../mwworld/esmstore.hpp"
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namespace MWRender
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{
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GlobalMap::GlobalMap(const std::string &cacheDir)
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: mCacheDir(cacheDir)
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, mMinX(0), mMaxX(0)
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, mMinY(0), mMaxY(0)
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, mWidth(0)
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, mHeight(0)
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{
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mCellSize = Settings::Manager::getInt("global map cell size", "Map");
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}
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GlobalMap::~GlobalMap()
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{
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Ogre::TextureManager::getSingleton().remove(mOverlayTexture->getName());
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}
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void GlobalMap::render (Loading::Listener* loadingListener)
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{
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Ogre::TexturePtr tex;
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const MWWorld::ESMStore &esmStore =
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MWBase::Environment::get().getWorld()->getStore();
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// get the size of the world
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MWWorld::Store<ESM::Cell>::iterator it = esmStore.get<ESM::Cell>().extBegin();
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for (; it != esmStore.get<ESM::Cell>().extEnd(); ++it)
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{
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if (it->getGridX() < mMinX)
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mMinX = it->getGridX();
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if (it->getGridX() > mMaxX)
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mMaxX = it->getGridX();
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if (it->getGridY() < mMinY)
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mMinY = it->getGridY();
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if (it->getGridY() > mMaxY)
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mMaxY = it->getGridY();
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}
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mWidth = mCellSize*(mMaxX-mMinX+1);
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mHeight = mCellSize*(mMaxY-mMinY+1);
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loadingListener->loadingOn();
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loadingListener->setLabel("Creating map");
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loadingListener->setProgressRange((mMaxX-mMinX+1) * (mMaxY-mMinY+1));
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loadingListener->setProgress(0);
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const Ogre::ColourValue waterShallowColour(0.15, 0.2, 0.19);
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const Ogre::ColourValue waterDeepColour(0.1, 0.14, 0.13);
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const Ogre::ColourValue groundColour(0.254, 0.19, 0.13);
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const Ogre::ColourValue mountainColour(0.05, 0.05, 0.05);
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const Ogre::ColourValue hillColour(0.16, 0.12, 0.08);
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//if (!boost::filesystem::exists(mCacheDir + "/GlobalMap.png"))
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if (1)
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{
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std::vector<Ogre::uchar> data (mWidth * mHeight * 3);
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for (int x = mMinX; x <= mMaxX; ++x)
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{
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for (int y = mMinY; y <= mMaxY; ++y)
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{
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ESM::Land* land = esmStore.get<ESM::Land>().search (x,y);
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if (land)
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{
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int mask = ESM::Land::DATA_VHGT | ESM::Land::DATA_VNML | ESM::Land::DATA_VCLR | ESM::Land::DATA_VTEX;
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if (!land->isDataLoaded(mask))
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land->loadData(mask);
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}
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for (int cellY=0; cellY<mCellSize; ++cellY)
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{
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for (int cellX=0; cellX<mCellSize; ++cellX)
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{
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int vertexX = float(cellX)/float(mCellSize) * ESM::Land::LAND_SIZE;
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int vertexY = float(cellY)/float(mCellSize) * ESM::Land::LAND_SIZE;
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int texelX = (x-mMinX) * mCellSize + cellX;
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int texelY = (mHeight-1) - ((y-mMinY) * mCellSize + cellY);
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unsigned char r,g,b;
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if (land)
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{
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const float landHeight = land->mLandData->mHeights[vertexY * ESM::Land::LAND_SIZE + vertexX];
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if (landHeight >= 0)
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{
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const float hillHeight = 2500.f;
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if (landHeight >= hillHeight)
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{
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const float mountainHeight = 15000.f;
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float factor = std::min(1.f, float(landHeight-hillHeight)/mountainHeight);
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r = (hillColour.r * (1-factor) + mountainColour.r * factor) * 255;
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g = (hillColour.g * (1-factor) + mountainColour.g * factor) * 255;
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b = (hillColour.b * (1-factor) + mountainColour.b * factor) * 255;
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}
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else
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{
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float factor = std::min(1.f, float(landHeight)/hillHeight);
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r = (groundColour.r * (1-factor) + hillColour.r * factor) * 255;
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g = (groundColour.g * (1-factor) + hillColour.g * factor) * 255;
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b = (groundColour.b * (1-factor) + hillColour.b * factor) * 255;
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}
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}
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else
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{
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if (landHeight >= -100)
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{
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float factor = std::min(1.f, -1*landHeight/100.f);
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r = (((waterShallowColour+groundColour)/2).r * (1-factor) + waterShallowColour.r * factor) * 255;
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g = (((waterShallowColour+groundColour)/2).g * (1-factor) + waterShallowColour.g * factor) * 255;
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b = (((waterShallowColour+groundColour)/2).b * (1-factor) + waterShallowColour.b * factor) * 255;
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}
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else
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{
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float factor = std::min(1.f, -1*(landHeight-100)/1000.f);
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r = (waterShallowColour.r * (1-factor) + waterDeepColour.r * factor) * 255;
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g = (waterShallowColour.g * (1-factor) + waterDeepColour.g * factor) * 255;
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b = (waterShallowColour.b * (1-factor) + waterDeepColour.b * factor) * 255;
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}
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}
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}
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else
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{
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r = waterDeepColour.r * 255;
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g = waterDeepColour.g * 255;
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b = waterDeepColour.b * 255;
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}
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data[texelY * mWidth * 3 + texelX * 3] = r;
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data[texelY * mWidth * 3 + texelX * 3+1] = g;
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data[texelY * mWidth * 3 + texelX * 3+2] = b;
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}
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}
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loadingListener->increaseProgress(1);
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}
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}
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Ogre::DataStreamPtr stream(new Ogre::MemoryDataStream(&data[0], data.size()));
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tex = Ogre::TextureManager::getSingleton ().createManual ("GlobalMap.png", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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Ogre::TEX_TYPE_2D, mWidth, mHeight, 0, Ogre::PF_B8G8R8, Ogre::TU_STATIC);
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tex->loadRawData(stream, mWidth, mHeight, Ogre::PF_B8G8R8);
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}
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else
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tex = Ogre::TextureManager::getSingleton ().getByName ("GlobalMap.png");
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tex->load();
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mOverlayTexture = Ogre::TextureManager::getSingleton().createManual("GlobalMapOverlay", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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Ogre::TEX_TYPE_2D, mWidth, mHeight, 0, Ogre::PF_A8B8G8R8, Ogre::TU_DYNAMIC, this);
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clear();
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loadingListener->loadingOff();
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}
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void GlobalMap::worldPosToImageSpace(float x, float z, float& imageX, float& imageY)
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{
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imageX = float(x / 8192.f - mMinX) / (mMaxX - mMinX + 1);
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imageY = 1.f-float(z / 8192.f - mMinY) / (mMaxY - mMinY + 1);
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}
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void GlobalMap::cellTopLeftCornerToImageSpace(int x, int y, float& imageX, float& imageY)
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{
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imageX = float(x - mMinX) / (mMaxX - mMinX + 1);
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// NB y + 1, because we want the top left corner, not bottom left where the origin of the cell is
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imageY = 1.f-float(y - mMinY + 1) / (mMaxY - mMinY + 1);
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}
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void GlobalMap::exploreCell(int cellX, int cellY)
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{
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float originX = (cellX - mMinX) * mCellSize;
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// NB y + 1, because we want the top left corner, not bottom left where the origin of the cell is
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float originY = mHeight - (cellY+1 - mMinY) * mCellSize;
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if (cellX > mMaxX || cellX < mMinX || cellY > mMaxY || cellY < mMinY)
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return;
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Ogre::TexturePtr localMapTexture = Ogre::TextureManager::getSingleton().getByName("Cell_"
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+ boost::lexical_cast<std::string>(cellX) + "_" + boost::lexical_cast<std::string>(cellY));
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if (!localMapTexture.isNull())
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{
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int mapWidth = localMapTexture->getWidth();
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int mapHeight = localMapTexture->getHeight();
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mOverlayTexture->load();
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mOverlayTexture->getBuffer()->blit(localMapTexture->getBuffer(), Ogre::Image::Box(0,0,mapWidth,mapHeight),
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Ogre::Image::Box(originX,originY,originX+mCellSize,originY+mCellSize));
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Ogre::Image backup;
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std::vector<Ogre::uchar> data;
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data.resize(mCellSize*mCellSize*4, 0);
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backup.loadDynamicImage(&data[0], mCellSize, mCellSize, Ogre::PF_A8B8G8R8);
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localMapTexture->getBuffer()->blitToMemory(Ogre::Image::Box(0,0,mapWidth,mapHeight), backup.getPixelBox());
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for (int x=0; x<mCellSize; ++x)
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for (int y=0; y<mCellSize; ++y)
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{
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assert (originX+x < mOverlayImage.getWidth());
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assert (originY+y < mOverlayImage.getHeight());
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assert (x < int(backup.getWidth()));
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assert (y < int(backup.getHeight()));
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mOverlayImage.setColourAt(backup.getColourAt(x, y, 0), originX+x, originY+y, 0);
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}
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}
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}
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void GlobalMap::clear()
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{
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Ogre::uchar* buffer = OGRE_ALLOC_T(Ogre::uchar, mWidth * mHeight * 4, Ogre::MEMCATEGORY_GENERAL);
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memset(buffer, 0, mWidth * mHeight * 4);
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mOverlayImage.loadDynamicImage(&buffer[0], mWidth, mHeight, 1, Ogre::PF_A8B8G8R8, true); // pass ownership of buffer to image
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mOverlayTexture->load();
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}
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void GlobalMap::loadResource(Ogre::Resource *resource)
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{
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Ogre::Texture* tex = dynamic_cast<Ogre::Texture*>(resource);
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Ogre::ConstImagePtrList list;
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list.push_back(&mOverlayImage);
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tex->_loadImages(list);
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}
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void GlobalMap::write(ESM::GlobalMap& map)
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{
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map.mBounds.mMinX = mMinX;
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map.mBounds.mMaxX = mMaxX;
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map.mBounds.mMinY = mMinY;
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map.mBounds.mMaxY = mMaxY;
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Ogre::DataStreamPtr encoded = mOverlayImage.encode("png");
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map.mImageData.resize(encoded->size());
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encoded->read(&map.mImageData[0], encoded->size());
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}
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void GlobalMap::read(ESM::GlobalMap& map)
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{
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const ESM::GlobalMap::Bounds& bounds = map.mBounds;
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if (bounds.mMaxX-bounds.mMinX <= 0)
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return;
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if (bounds.mMaxY-bounds.mMinY <= 0)
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return;
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if (bounds.mMinX > bounds.mMaxX
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|| bounds.mMinY > bounds.mMaxY)
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throw std::runtime_error("invalid map bounds");
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Ogre::Image image;
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Ogre::DataStreamPtr stream(new Ogre::MemoryDataStream(&map.mImageData[0], map.mImageData.size()));
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image.load(stream, "png");
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int xLength = (bounds.mMaxX-bounds.mMinX+1);
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int yLength = (bounds.mMaxY-bounds.mMinY+1);
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// Size of one cell in image space
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int cellImageSizeSrc = image.getWidth() / xLength;
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if (int(image.getHeight() / yLength) != cellImageSizeSrc)
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throw std::runtime_error("cell size must be quadratic");
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// If cell bounds of the currently loaded content and the loaded savegame do not match,
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// we need to resize source/dest boxes to accommodate
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// This means nonexisting cells will be dropped silently
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int cellImageSizeDst = mCellSize;
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// Completely off-screen? -> no need to blit anything
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if (bounds.mMaxX < mMinX
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|| bounds.mMaxY < mMinY
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|| bounds.mMinX > mMaxX
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|| bounds.mMinY > mMaxY)
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return;
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int leftDiff = (mMinX - bounds.mMinX);
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int topDiff = (bounds.mMaxY - mMaxY);
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int rightDiff = (bounds.mMaxX - mMaxX);
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int bottomDiff = (mMinY - bounds.mMinY);
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Ogre::Image::Box srcBox ( std::max(0, leftDiff * cellImageSizeSrc),
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std::max(0, topDiff * cellImageSizeSrc),
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std::min(image.getWidth(), image.getWidth() - rightDiff * cellImageSizeSrc),
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std::min(image.getHeight(), image.getHeight() - bottomDiff * cellImageSizeSrc));
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Ogre::Image::Box destBox ( std::max(0, -leftDiff * cellImageSizeDst),
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std::max(0, -topDiff * cellImageSizeDst),
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std::min(mOverlayTexture->getWidth(), mOverlayTexture->getWidth() + rightDiff * cellImageSizeDst),
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std::min(mOverlayTexture->getHeight(), mOverlayTexture->getHeight() + bottomDiff * cellImageSizeDst));
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// Looks like there is no interface for blitting from memory with src/dst boxes.
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// So we create a temporary texture for blitting.
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Ogre::TexturePtr tex = Ogre::TextureManager::getSingleton().createManual("@temp",
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Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, Ogre::TEX_TYPE_2D, image.getWidth(),
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image.getHeight(), 0, Ogre::PF_A8B8G8R8);
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tex->loadImage(image);
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mOverlayTexture->load();
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mOverlayTexture->getBuffer()->blit(tex->getBuffer(), srcBox, destBox);
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if (srcBox.left == destBox.left && srcBox.right == destBox.right
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&& srcBox.top == destBox.top && srcBox.bottom == destBox.bottom
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&& int(image.getWidth()) == mWidth && int(image.getHeight()) == mHeight)
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mOverlayImage = image;
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else
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mOverlayTexture->convertToImage(mOverlayImage);
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Ogre::TextureManager::getSingleton().remove("@temp");
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}
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}
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