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https://github.com/OpenMW/openmw.git
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238 lines
8.7 KiB
C++
238 lines
8.7 KiB
C++
/*
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Copyright (C) 2015-2016, 2018, 2020-2021 cc9cii
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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cc9cii cc9c@iinet.net.au
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Much of the information on the data structures are based on the information
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from Tes4Mod:Mod_File_Format and Tes5Mod:File_Formats but also refined by
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trial & error. See http://en.uesp.net/wiki for details.
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*/
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#include "loadland.hpp"
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#include <cstdint>
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#include <stdexcept>
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#include <components/debug/debuglog.hpp>
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#include "reader.hpp"
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// #include "writer.hpp"
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// overlap north
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//
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// 32
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// 31
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// 30
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// overlap .
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// west .
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// .
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// 2
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// 1
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// 0
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// 0 1 2 ... 30 31 32
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//
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// overlap south
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//
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void ESM4::Land::load(ESM4::Reader& reader)
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{
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mId = reader.getFormIdFromHeader();
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mFlags = reader.hdr().record.flags;
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mDataTypes = 0;
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mCell = reader.currCell();
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TxtLayer layer;
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std::int8_t currentAddQuad = -1; // for VTXT following ATXT
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// std::map<FormId, int> uniqueTextures; // FIXME: for temp testing only
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while (reader.getSubRecordHeader())
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{
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const ESM4::SubRecordHeader& subHdr = reader.subRecordHeader();
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switch (subHdr.typeId)
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{
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case ESM4::SUB_DATA:
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{
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reader.get(mLandFlags);
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break;
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}
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case ESM4::SUB_VNML: // vertex normals, 33x33x(1+1+1) = 3267
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{
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reader.get(mVertNorm);
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mDataTypes |= LAND_VNML;
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break;
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}
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case ESM4::SUB_VHGT: // vertex height gradient, 4+33x33+3 = 4+1089+3 = 1096
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{
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#if 0
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reader.get(mHeightMap.heightOffset);
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reader.get(mHeightMap.gradientData);
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reader.get(mHeightMap.unknown1);
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reader.get(mHeightMap.unknown2);
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#endif
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reader.get(mHeightMap);
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mDataTypes |= LAND_VHGT;
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break;
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}
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case ESM4::SUB_VCLR: // vertex colours, 24bit RGB, 33x33x(1+1+1) = 3267
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{
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reader.get(mVertColr);
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mDataTypes |= LAND_VCLR;
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break;
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}
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case ESM4::SUB_BTXT:
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{
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BTXT base;
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if (reader.getExact(base))
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{
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if (base.quadrant >= 4)
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throw std::runtime_error("base texture quadrant index error");
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reader.adjustFormId(base.formId);
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mTextures[base.quadrant].base = std::move(base);
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#if 0
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std::cout << "Base Texture formid: 0x"
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<< std::hex << mTextures[base.quadrant].base.formId
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<< ", quad " << std::dec << (int)base.quadrant << std::endl;
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#endif
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}
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break;
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}
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case ESM4::SUB_ATXT:
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{
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if (currentAddQuad != -1)
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{
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// FIXME: sometimes there are no VTXT following an ATXT? Just add a dummy one for now
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Log(Debug::Verbose) << "ESM4::Land VTXT empty layer " << layer.texture.layerIndex;
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mTextures[currentAddQuad].layers.push_back(layer);
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}
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reader.get(layer.texture);
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reader.adjustFormId(layer.texture.formId);
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if (layer.texture.quadrant >= 4)
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throw std::runtime_error("additional texture quadrant index error");
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#if 0
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FormId txt = layer.texture.formId;
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std::map<FormId, int>::iterator lb = uniqueTextures.lower_bound(txt);
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if (lb != uniqueTextures.end() && !(uniqueTextures.key_comp()(txt, lb->first)))
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{
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lb->second += 1;
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}
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else
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uniqueTextures.insert(lb, std::make_pair(txt, 1));
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#endif
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#if 0
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std::cout << "Additional Texture formId: 0x"
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<< std::hex << layer.texture.formId
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<< ", quad " << std::dec << (int)layer.texture.quadrant << std::endl;
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std::cout << "Additional Texture layer: "
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<< std::dec << (int)layer.texture.layerIndex << std::endl;
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#endif
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currentAddQuad = layer.texture.quadrant;
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break;
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}
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case ESM4::SUB_VTXT:
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{
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if (currentAddQuad == -1)
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throw std::runtime_error("VTXT without ATXT found");
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const std::uint16_t count = reader.subRecordHeader().dataSize / sizeof(ESM4::Land::VTXT);
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if ((reader.subRecordHeader().dataSize % sizeof(ESM4::Land::VTXT)) != 0)
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throw std::runtime_error("ESM4::LAND VTXT data size error");
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if (count)
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{
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layer.data.resize(count);
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std::vector<ESM4::Land::VTXT>::iterator it = layer.data.begin();
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for (; it != layer.data.end(); ++it)
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{
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reader.get(*it);
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// FIXME: debug only
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// std::cout << "pos: " << std::dec << (int)(*it).position << std::endl;
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}
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}
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mTextures[currentAddQuad].layers.push_back(layer);
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// Assumed that the layers are added in the correct sequence
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// FIXME: Knights.esp doesn't seem to observe this - investigate more
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// assert(layer.texture.layerIndex == mTextures[currentAddQuad].layers.size()-1
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//&& "additional texture layer index error");
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currentAddQuad = -1;
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layer.data.clear();
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// FIXME: debug only
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// std::cout << "VTXT: count " << std::dec << count << std::endl;
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break;
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}
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case ESM4::SUB_VTEX: // only in Oblivion?
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{
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const std::uint16_t count = reader.subRecordHeader().dataSize / sizeof(ESM::FormId32);
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if ((reader.subRecordHeader().dataSize % sizeof(ESM::FormId32)) != 0)
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throw std::runtime_error("ESM4::LAND VTEX data size error");
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if (count)
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{
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mIds.resize(count);
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for (ESM::FormId& id : mIds)
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reader.getFormId(id);
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}
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break;
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}
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case ESM4::SUB_MPCD: // FO4
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reader.skipSubRecordData();
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break;
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default:
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throw std::runtime_error("ESM4::LAND::load - Unknown subrecord " + ESM::printName(subHdr.typeId));
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}
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}
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if (currentAddQuad != -1)
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{
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// FIXME: not sure if it happens here as well
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Log(Debug::Verbose) << "ESM4::Land VTXT empty layer " << layer.texture.layerIndex << " quad "
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<< static_cast<unsigned>(layer.texture.quadrant);
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mTextures[currentAddQuad].layers.push_back(layer);
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}
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bool missing = false;
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for (int i = 0; i < 4; ++i)
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{
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if (mTextures[i].base.formId == 0)
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{
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// std::cout << "ESM4::LAND " << ESM4::formIdToString(mFormId) << " missing base, quad " << i << std::endl;
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// std::cout << "layers " << mTextures[i].layers.size() << std::endl;
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// NOTE: can't set the default here since FO3/FONV may have different defaults
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// mTextures[i].base.formId = 0x000008C0; // TerrainHDDirt01.dds
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missing = true;
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}
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// else
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//{
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// std::cout << "ESM4::LAND " << ESM4::formIdToString(mFormId) << " base, quad " << i << std::endl;
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// std::cout << "layers " << mTextures[i].layers.size() << std::endl;
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// }
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}
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// at least one of the quadrants do not have a base texture, return without setting the flag
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if (!missing)
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mDataTypes |= LAND_VTEX;
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}
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// void ESM4::Land::save(ESM4::Writer& writer) const
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//{
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// }
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// void ESM4::Land::blank()
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//{
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// }
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