/
models.cpp
1477 lines (1238 loc) · 45.4 KB
/
models.cpp
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/** @file models.cpp 3D Model Resources.
*
* MD2/DMD2 loading and setup.
*
* @authors Copyright © 2003-2013 Jaakko Keränen <jaakko.keranen@iki.fi>
* @authors Copyright © 2006-2013 Daniel Swanson <danij@dengine.net>
* @authors Copyright © 2006 Jamie Jones <jamie_jones_au@yahoo.com.au>
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. This program is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details. You should have received a copy of the GNU
* General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA</small>
*/
#include <QDir>
#include <de/App>
#include <de/ByteOrder>
#include <de/NativePath>
#include <de/StringPool>
#include <de/mathutil.h> // for M_CycleIntoRange()
#include <de/memory.h>
#include "de_platform.h"
#include <cmath>
#include <cstring> // memset
#include "de_base.h"
#include "de_console.h"
#include "de_filesys.h"
#include "de_graphics.h"
#include "de_play.h"
#include "de_resource.h"
#include "def_main.h"
#ifdef __CLIENT__
# include "MaterialSnapshot"
#endif
#include "render/r_things.h"
#include "render/rend_model.h"
#include "render/sprite.h"
using namespace de;
ModelDefs modefs;
byte useModels = true;
float rModelAspectMod = 1 / 1.2f; //.833334f;
static StringPool* modelRepository; // Owns model_t instances.
static std::vector<int> stateModefs; // Index to the modefs array.
static float avertexnormals[NUMVERTEXNORMALS][3] = {
#include "tab_anorms.h"
};
static int indexOfModelDef(ModelDef const *mf)
{
return mf - &modefs[0];
}
static ModelDef *modelDefForState(int stateIndex)
{
DENG2_ASSERT(stateIndex >= 0);
DENG2_ASSERT(stateIndex < int(stateModefs.size()));
if(stateModefs[stateIndex] < 0) return 0;
DENG2_ASSERT(stateModefs[stateIndex] >= 0);
DENG2_ASSERT(stateModefs[stateIndex] < int(modefs.size()));
return &modefs[stateModefs[stateIndex]];
}
/**
* Packed: pppppppy yyyyyyyy. Yaw is on the XY plane.
*/
static void unpackVector(ushort packed, float vec[3])
{
float const yaw = (packed & 511) / 512.0f * 2 * PI;
float const pitch = ((packed >> 9) / 127.0f - 0.5f) * PI;
float const cosp = float(cos(pitch));
vec[VX] = float( cos(yaw) * cosp );
vec[VY] = float( sin(yaw) * cosp );
vec[VZ] = float( sin(pitch) );
}
/**
* Calculate vertex normals. Only with -renorm.
*/
#if 0 // unused atm.
static void rebuildNormals(model_t &mdl)
{
// Renormalizing?
if(!CommandLine_Check("-renorm")) return;
int const tris = mdl.lodInfo[0].numTriangles;
int const verts = mdl.info.numVertices;
vector_t* normals = (vector_t*) Z_Malloc(sizeof(vector_t) * tris, PU_APPSTATIC, 0);
vector_t norm;
int cnt;
// Calculate the normal for each vertex.
for(int i = 0; i < mdl.info.numFrames; ++i)
{
model_vertex_t* list = mdl.frames[i].vertices;
for(int k = 0; k < tris; ++k)
{
dmd_triangle_t const& tri = mdl.lods[0].triangles[k];
// First calculate surface normals, combine them to vertex ones.
V3f_PointCrossProduct(normals[k].pos,
list[tri.vertexIndices[0]].vertex,
list[tri.vertexIndices[2]].vertex,
list[tri.vertexIndices[1]].vertex);
V3f_Normalize(normals[k].pos);
}
for(int k = 0; k < verts; ++k)
{
memset(&norm, 0, sizeof(norm));
cnt = 0;
for(int j = 0; j < tris; ++j)
{
dmd_triangle_t const& tri = mdl.lods[0].triangles[j];
for(int n = 0; n < 3; ++n)
{
if(tri.vertexIndices[n] == k)
{
cnt++;
for(int n = 0; n < 3; ++n)
{
norm.pos[n] += normals[j].pos[n];
}
break;
}
}
}
if(!cnt) continue; // Impossible...
// Calculate the average.
for(int n = 0; n < 3; ++n)
{
norm.pos[n] /= cnt;
}
// Normalize it.
V3f_Normalize(norm.pos);
memcpy(list[k].normal, norm.pos, sizeof(norm.pos));
}
}
Z_Free(normals);
}
#endif
static void* allocAndLoad(de::FileHandle& file, int offset, int len)
{
uint8_t* ptr = (uint8_t*) M_Malloc(len);
if(!ptr) throw Error("allocAndLoad:", String("Failed on allocation of %1 bytes for load buffer").arg(len));
file.seek(offset, SeekSet);
file.read(ptr, len);
return ptr;
}
static bool readMd2Header(de::FileHandle& file, md2_header_t& hdr)
{
size_t readBytes = file.read((uint8_t*)&hdr, sizeof(md2_header_t));
if(readBytes < sizeof(md2_header_t)) return false;
hdr.magic = littleEndianByteOrder.toNative(hdr.magic);
hdr.version = littleEndianByteOrder.toNative(hdr.version);
hdr.skinWidth = littleEndianByteOrder.toNative(hdr.skinWidth);
hdr.skinHeight = littleEndianByteOrder.toNative(hdr.skinHeight);
hdr.frameSize = littleEndianByteOrder.toNative(hdr.frameSize);
hdr.numSkins = littleEndianByteOrder.toNative(hdr.numSkins);
hdr.numVertices = littleEndianByteOrder.toNative(hdr.numVertices);
hdr.numTexCoords = littleEndianByteOrder.toNative(hdr.numTexCoords);
hdr.numTriangles = littleEndianByteOrder.toNative(hdr.numTriangles);
hdr.numGlCommands = littleEndianByteOrder.toNative(hdr.numGlCommands);
hdr.numFrames = littleEndianByteOrder.toNative(hdr.numFrames);
hdr.offsetSkins = littleEndianByteOrder.toNative(hdr.offsetSkins);
hdr.offsetTexCoords = littleEndianByteOrder.toNative(hdr.offsetTexCoords);
hdr.offsetTriangles = littleEndianByteOrder.toNative(hdr.offsetTriangles);
hdr.offsetFrames = littleEndianByteOrder.toNative(hdr.offsetFrames);
hdr.offsetGlCommands = littleEndianByteOrder.toNative(hdr.offsetGlCommands);
hdr.offsetEnd = littleEndianByteOrder.toNative(hdr.offsetEnd);
return true;
}
/// @todo We only really need to read the magic bytes and the version here.
static bool recogniseMd2(de::FileHandle& file)
{
md2_header_t hdr;
size_t initPos = file.tell();
// Seek to the start of the header.
file.seek(0, SeekSet);
bool result = (readMd2Header(file, hdr) && LONG(hdr.magic) == MD2_MAGIC);
// Return the stream to its original position.
file.seek(initPos, SeekSet);
return result;
}
static void loadMd2(de::FileHandle& file, model_t& mdl)
{
int const axis[3] = { 0, 2, 1 };
md2_header_t oldHdr;
dmd_header_t& hdr = mdl.header;
dmd_info_t& inf = mdl.info;
// Read the header.
bool readHeaderOk = readMd2Header(file, oldHdr);
DENG_ASSERT(readHeaderOk);
DENG_UNUSED(readHeaderOk); // should this be checked?
// Convert it to DMD.
hdr.magic = MD2_MAGIC;
hdr.version = 8;
hdr.flags = 0;
mdl.vertexUsage = NULL;
inf.skinWidth = oldHdr.skinWidth;
inf.skinHeight = oldHdr.skinHeight;
inf.frameSize = oldHdr.frameSize;
inf.numSkins = oldHdr.numSkins;
inf.numTexCoords = oldHdr.numTexCoords;
inf.numVertices = oldHdr.numVertices;
inf.numFrames = oldHdr.numFrames;
inf.offsetSkins = oldHdr.offsetSkins;
inf.offsetTexCoords = oldHdr.offsetTexCoords;
inf.offsetFrames = oldHdr.offsetFrames;
inf.offsetLODs = oldHdr.offsetEnd; // Doesn't exist.
inf.numLODs = 1;
mdl.lodInfo[0].numTriangles = oldHdr.numTriangles;
mdl.lodInfo[0].numGlCommands = oldHdr.numGlCommands;
mdl.lodInfo[0].offsetTriangles = oldHdr.offsetTriangles;
mdl.lodInfo[0].offsetGlCommands = oldHdr.offsetGlCommands;
inf.offsetEnd = oldHdr.offsetEnd;
// The frames need to be unpacked.
byte* frames = (byte*) allocAndLoad(file, inf.offsetFrames, inf.frameSize * inf.numFrames);
mdl.frames = (model_frame_t*) M_Malloc(sizeof(model_frame_t) * inf.numFrames);
model_frame_t* frame = mdl.frames;
for(int i = 0; i < inf.numFrames; ++i, ++frame)
{
md2_packedFrame_t* pfr = (md2_packedFrame_t*) (frames + inf.frameSize * i);
memcpy(frame->name, pfr->name, sizeof(pfr->name));
frame->vertices = (model_vertex_t*) M_Malloc(sizeof(model_vertex_t) * inf.numVertices);
frame->normals = (model_vertex_t*) M_Malloc(sizeof(model_vertex_t) * inf.numVertices);
// Translate each vertex.
md2_triangleVertex_t* pVtx = pfr->vertices;
for(int k = 0; k < inf.numVertices; ++k, pVtx++)
{
byte const lightNormalIndex = pVtx->lightNormalIndex;
memcpy(frame->normals[k].xyz, avertexnormals[lightNormalIndex], sizeof(float) * 3);
for(int c = 0; c < 3; ++c)
{
frame->vertices[k].xyz[axis[c]] =
pVtx->vertex[c] * FLOAT(pfr->scale[c]) + FLOAT(pfr->translate[c]);
}
// Aspect undoing.
frame->vertices[k].xyz[VY] *= rModelAspectMod;
for(int c = 0; c < 3; ++c)
{
if(!k || frame->vertices[k].xyz[c] < frame->min[c])
frame->min[c] = frame->vertices[k].xyz[c];
if(!k || frame->vertices[k].xyz[c] > frame->max[c])
frame->max[c] = frame->vertices[k].xyz[c];
}
}
}
M_Free(frames);
mdl.lods[0].glCommands = (int*) allocAndLoad(file, mdl.lodInfo[0].offsetGlCommands,
sizeof(int) * mdl.lodInfo[0].numGlCommands);
// Load skins. (Note: numSkins may be zero.)
mdl.skins = (dmd_skin_t*) M_Calloc(sizeof(*mdl.skins) * inf.numSkins);
if(!mdl.skins) throw std::bad_alloc();
file.seek(inf.offsetSkins, SeekSet);
for(int i = 0; i < inf.numSkins; ++i)
{
file.read((uint8_t*)mdl.skins[i].name, 64);
}
}
static bool readHeaderDmd(de::FileHandle& file, dmd_header_t& hdr)
{
size_t readBytes = file.read((uint8_t*)&hdr, sizeof(dmd_header_t));
if(readBytes < sizeof(dmd_header_t)) return false;
hdr.magic = littleEndianByteOrder.toNative(hdr.magic);
hdr.version = littleEndianByteOrder.toNative(hdr.version);
hdr.flags = littleEndianByteOrder.toNative(hdr.flags);
return true;
}
static bool recogniseDmd(de::FileHandle& file)
{
dmd_header_t hdr;
size_t initPos = file.tell();
// Seek to the start of the header.
file.seek(0, SeekSet);
bool result = (readHeaderDmd(file, hdr) && LONG(hdr.magic) == DMD_MAGIC);
// Return the stream to its original position.
file.seek(initPos, SeekSet);
return result;
}
static void loadDmd(de::FileHandle& file, model_t& mdl)
{
int const axis[3] = { 0, 2, 1 };
// Read the header.
bool readHeaderOk = readHeaderDmd(file, mdl.header);
DENG_ASSERT(readHeaderOk);
DENG_UNUSED(readHeaderOk); // should this be checked?
dmd_info_t& inf = mdl.info;
// Read the chunks.
dmd_chunk_t chunk;
file.read((uint8_t*)&chunk, sizeof(chunk));
while(LONG(chunk.type) != DMC_END)
{
switch(LONG(chunk.type))
{
case DMC_INFO: // Standard DMD information chunk.
file.read((uint8_t*)&inf, LONG(chunk.length));
inf.skinWidth = LONG(inf.skinWidth);
inf.skinHeight = LONG(inf.skinHeight);
inf.frameSize = LONG(inf.frameSize);
inf.numSkins = LONG(inf.numSkins);
inf.numVertices = LONG(inf.numVertices);
inf.numTexCoords = LONG(inf.numTexCoords);
inf.numFrames = LONG(inf.numFrames);
inf.numLODs = LONG(inf.numLODs);
inf.offsetSkins = LONG(inf.offsetSkins);
inf.offsetTexCoords = LONG(inf.offsetTexCoords);
inf.offsetFrames = LONG(inf.offsetFrames);
inf.offsetLODs = LONG(inf.offsetLODs);
inf.offsetEnd = LONG(inf.offsetEnd);
break;
default:
// Just skip all unknown chunks.
file.seek(LONG(chunk.length), SeekCur);
break;
}
// Read the next chunk header.
file.read((uint8_t*)&chunk, sizeof(chunk));
}
// Allocate and load in the data. (Note: numSkins may be zero.)
mdl.skins = (dmd_skin_t*) M_Calloc(sizeof(dmd_skin_t) * inf.numSkins);
file.seek(inf.offsetSkins, SeekSet);
for(int i = 0; i < inf.numSkins; ++i)
{
file.read((uint8_t*)mdl.skins[i].name, 64);
}
char* temp = (char*) allocAndLoad(file, inf.offsetFrames, inf.frameSize * inf.numFrames);
mdl.frames = (model_frame_t*) M_Malloc(sizeof(model_frame_t) * inf.numFrames);
model_frame_t* frame = mdl.frames;
for(int i = 0; i < inf.numFrames; ++i, ++frame)
{
dmd_packedFrame_t* pfr = (dmd_packedFrame_t*) (temp + inf.frameSize * i);
dmd_packedVertex_t* pVtx;
memcpy(frame->name, pfr->name, sizeof(pfr->name));
frame->vertices = (model_vertex_t*) M_Malloc(sizeof(model_vertex_t) * inf.numVertices);
frame->normals = (model_vertex_t*) M_Malloc(sizeof(model_vertex_t) * inf.numVertices);
// Translate each vertex.
pVtx = pfr->vertices;
for(int k = 0; k < inf.numVertices; ++k, ++pVtx)
{
unpackVector(USHORT(pVtx->normal), frame->normals[k].xyz);
for(int c = 0; c < 3; ++c)
{
frame->vertices[k].xyz[axis[c]] =
pVtx->vertex[c] * FLOAT(pfr->scale[c]) + FLOAT(pfr->translate[c]);
}
// Aspect undo.
frame->vertices[k].xyz[1] *= rModelAspectMod;
for(int c = 0; c < 3; ++c)
{
if(!k || frame->vertices[k].xyz[c] < frame->min[c])
frame->min[c] = frame->vertices[k].xyz[c];
if(!k || frame->vertices[k].xyz[c] > frame->max[c])
frame->max[c] = frame->vertices[k].xyz[c];
}
}
}
M_Free(temp);
file.seek(inf.offsetLODs, SeekSet);
file.read((uint8_t*)mdl.lodInfo, sizeof(dmd_levelOfDetail_t) * inf.numLODs);
dmd_triangle_t* triangles[MAX_LODS];
for(int i = 0; i < inf.numLODs; ++i)
{
mdl.lodInfo[i].numTriangles = LONG(mdl.lodInfo[i].numTriangles);
mdl.lodInfo[i].numGlCommands = LONG(mdl.lodInfo[i].numGlCommands);
mdl.lodInfo[i].offsetTriangles = LONG(mdl.lodInfo[i].offsetTriangles);
mdl.lodInfo[i].offsetGlCommands = LONG(mdl.lodInfo[i].offsetGlCommands);
triangles[i] = (dmd_triangle_t*) allocAndLoad(file, mdl.lodInfo[i].offsetTriangles,
sizeof(dmd_triangle_t) * mdl.lodInfo[i].numTriangles);
mdl.lods[i].glCommands = (int*) allocAndLoad(file, mdl.lodInfo[i].offsetGlCommands,
sizeof(int) * mdl.lodInfo[i].numGlCommands);
}
// Determine vertex usage at each LOD level.
/// @attention Assumes there will never be more than 8 LOD levels.
mdl.vertexUsage = (char*) M_Calloc(inf.numVertices);
for(int i = 0; i < inf.numLODs; ++i)
{
for(int k = 0; k < mdl.lodInfo[i].numTriangles; ++k)
{
for(int c = 0; c < 3; ++c)
mdl.vertexUsage[SHORT(triangles[i][k].vertexIndices[c])] |= 1 << i;
}
}
// We don't need the triangles any more.
for(int i = 0; i < inf.numLODs; ++i)
{
M_Free(triangles[i]);
}
}
static model_t* modelForId(modelid_t modelId, bool canCreate = false)
{
DENG_ASSERT(modelRepository);
model_t* mdl = reinterpret_cast<model_t*>(modelRepository->userPointer(modelId));
if(!mdl && canCreate)
{
// Allocate a new model_t.
mdl = (model_t*) M_Calloc(sizeof(model_t));
mdl->modelId = modelId;
mdl->allowTexComp = true;
modelRepository->setUserPointer(modelId, mdl);
}
return mdl;
}
model_t* Models_ToModel(modelid_t id)
{
return modelForId(id);
}
static inline String const &findModelPath(modelid_t id)
{
return modelRepository->stringRef(id);
}
static String findSkinPath(Path const &skinPath, Path const &modelFilePath)
{
DENG_ASSERT(!skinPath.isEmpty());
// Try the "first choice" directory first.
if(!modelFilePath.isEmpty())
{
// The "first choice" directory is that in which the model file resides.
try
{
de::Uri searchPath("Models", modelFilePath.toString().fileNamePath() / skinPath.fileName());
return App_FileSystem().findPath(searchPath, RLF_DEFAULT, DD_ResourceClassById(RC_GRAPHIC));
}
catch(FS1::NotFoundError const &)
{} // Ignore this error.
}
/// @throws FS1::NotFoundError if no resource was found.
de::Uri searchPath("Models", skinPath);
return App_FileSystem().findPath(searchPath, RLF_DEFAULT, DD_ResourceClassById(RC_GRAPHIC));
}
/**
* Allocate room for a new skin file name.
*/
static short defineSkinAndAddToModelIndex(model_t &mdl, Path const &skinPath)
{
int const newSkin = mdl.info.numSkins;
if(Texture *tex = R_DefineTexture("ModelSkins", de::Uri(skinPath)))
{
// A duplicate? (return existing skin number)
for(int i = 0; i < mdl.info.numSkins; ++i)
{
if(mdl.skins[i].texture == reinterpret_cast<texture_s *>(tex)) return i;
}
// Add this new skin.
mdl.skins = (dmd_skin_t *) M_Realloc(mdl.skins, sizeof(*mdl.skins) * ++mdl.info.numSkins);
if(!mdl.skins) throw Error("newModelSkin", String("Failed on (re)allocation of %1 bytes enlarging DmdSkin list").arg(sizeof(*mdl.skins) * mdl.info.numSkins));
std::memset(mdl.skins + newSkin, 0, sizeof(dmd_skin_t));
QByteArray pathUtf8 = skinPath.toString().toUtf8();
qstrncpy(mdl.skins[newSkin].name, pathUtf8.constData(), 256);
mdl.skins[newSkin].texture = reinterpret_cast<texture_s *>(tex);
}
return newSkin;
}
static void defineAllSkins(model_t &mdl)
{
String const &modelFilePath = findModelPath(mdl.modelId);
int numFoundSkins = 0;
for(int i = 0; i < mdl.info.numSkins; ++i)
{
if(!mdl.skins[i].name[0]) continue;
try
{
de::Uri foundResourceUri(Path(findSkinPath(mdl.skins[i].name, modelFilePath)));
mdl.skins[i].texture = reinterpret_cast<texture_s *>(R_DefineTexture("ModelSkins", foundResourceUri));
// We have found one more skin for this model.
numFoundSkins += 1;
}
catch(FS1::NotFoundError const&)
{
LOG_WARNING("Failed to locate \"%s\" (#%i) for model \"%s\", ignoring.")
<< mdl.skins[i].name << i << NativePath(modelFilePath).pretty();
}
}
if(!numFoundSkins)
{
// Lastly try a skin named similarly to the model in the same directory.
de::Uri searchPath(modelFilePath.fileNamePath() / modelFilePath.fileNameWithoutExtension(), RC_GRAPHIC);
try
{
String foundPath = App_FileSystem().findPath(searchPath, RLF_DEFAULT,
DD_ResourceClassById(RC_GRAPHIC));
// Ensure the found path is absolute.
foundPath = App_BasePath() / foundPath;
defineSkinAndAddToModelIndex(mdl, foundPath);
// We have found one more skin for this model.
numFoundSkins = 1;
LOG_INFO("Assigned fallback skin \"%s\" to index #0 for model \"%s\".")
<< NativePath(foundPath).pretty()
<< NativePath(modelFilePath).pretty();
}
catch(FS1::NotFoundError const&)
{} // Ignore this error.
}
if(!numFoundSkins)
{
LOG_WARNING("Failed to locate a skin for model \"%s\". This model will be rendered without a skin.")
<< NativePath(modelFilePath).pretty();
}
}
static model_t *interpretDmd(de::FileHandle &hndl, String path, modelid_t modelId)
{
if(recogniseDmd(hndl))
{
LOG_AS("DmdFileType");
LOG_VERBOSE("Interpreted \"" + NativePath(path).pretty() + "\".");
model_t *mdl = modelForId(modelId, true/*create*/);
loadDmd(hndl, *mdl);
return mdl;
}
return 0;
}
static model_t *interpretMd2(de::FileHandle &hndl, String path, modelid_t modelId)
{
if(recogniseMd2(hndl))
{
LOG_AS("Md2FileType");
LOG_VERBOSE("Interpreted \"" + NativePath(path).pretty() + "\".");
model_t *mdl = modelForId(modelId, true/*create*/);
loadMd2(hndl, *mdl);
return mdl;
}
return 0;
}
struct ModelFileType
{
/// Symbolic name of the resource type.
String const name;
/// Known file extension.
String const ext;
model_t *(*interpretFunc)(de::FileHandle &hndl, String path, modelid_t modelId);
};
// Model resource types.
static ModelFileType const modelTypes[] = {
{ "DMD", ".dmd", interpretDmd },
{ "MD2", ".md2", interpretMd2 },
{ "", "", 0 } // Terminate.
};
static ModelFileType const *guessModelFileTypeFromFileName(String filePath)
{
// An extension is required for this.
String ext = filePath.fileNameExtension();
if(!ext.isEmpty())
{
for(int i = 0; !modelTypes[i].name.isEmpty(); ++i)
{
ModelFileType const &type = modelTypes[i];
if(!type.ext.compareWithoutCase(ext))
{
return &type;
}
}
}
return 0; // Unknown.
}
static model_t *interpretModel(de::FileHandle &hndl, String path, modelid_t modelId)
{
model_t *mdl = 0;
// Firstly try the interpreter for the guessed resource types.
ModelFileType const *rtypeGuess = guessModelFileTypeFromFileName(path);
if(rtypeGuess)
{
mdl = rtypeGuess->interpretFunc(hndl, path, modelId);
}
// If not yet interpreted - try each recognisable format in order.
if(!mdl)
{
// Try each recognisable format instead.
for(int i = 0; !modelTypes[i].name.isEmpty(); ++i)
{
ModelFileType const &modelType = modelTypes[i];
// Already tried this?
if(&modelType == rtypeGuess) continue;
mdl = modelType.interpretFunc(hndl, path, modelId);
if(mdl) break;
}
}
return mdl;
}
/**
* Finds the existing model or loads in a new one.
*/
static model_t *loadModel(String path)
{
// Have we already loaded this?
modelid_t modelId = modelRepository->intern(path);
model_t *mdl = Models_ToModel(modelId);
if(mdl) return mdl; // Yes.
try
{
// Attempt to interpret and load this model file.
de::FileHandle &hndl = App_FileSystem().openFile(path, "rb");
mdl = interpretModel(hndl, path, modelId);
// We're done with the file.
App_FileSystem().releaseFile(hndl.file());
delete &hndl;
// Loaded?
if(mdl)
{
defineAllSkins(*mdl);
// Enlarge the vertex buffers in preparation for drawing of this model.
if(!Rend_ModelExpandVertexBuffers(mdl->info.numVertices))
{
LOG_WARNING("Model \"%s\" contains more than %u max vertices (%u), it will not be rendered.")
<< NativePath(path).pretty()
<< uint(RENDER_MAX_MODEL_VERTS) << uint(mdl->info.numVertices);
}
return mdl;
}
}
catch(FS1::NotFoundError const &er)
{
// Huh?? Should never happen.
LOG_WARNING(er.asText() + ", ignoring.");
}
return 0;
}
/**
* Returns the appropriate modeldef for the given state.
*/
static modeldef_t *getStateModel(state_t &st, int select)
{
modeldef_t *modef = modelDefForState(&st - states);
if(!modef) return 0;
if(select)
{
// Choose the correct selector, or selector zero if the given one not available.
int const mosel = select & DDMOBJ_SELECTOR_MASK;
for(modeldef_t *it = modef; it; it = it->selectNext)
{
if(it->select == mosel)
{
return it;
}
}
}
return modef;
}
modeldef_t* Models_Definition(char const* id)
{
if(!id || !id[0]) return 0;
for(uint i = 0; i < modefs.size(); ++i)
{
if(!strcmp(modefs[i].id, id))
return &modefs[i];
}
return 0;
}
float Models_ModelForMobj(mobj_t* mo, modeldef_t** modef, modeldef_t** nextmodef)
{
// On the client it is possible that we don't know the mobj's state.
if(!mo->state) return -1;
state_t& st = *mo->state;
// By default there are no models.
*nextmodef = NULL;
*modef = getStateModel(st, mo->selector);
if(!*modef) return -1; // No model available.
float interp = -1;
// World time animation?
bool worldTime = false;
if((*modef)->flags & MFF_WORLD_TIME_ANIM)
{
float duration = (*modef)->interRange[0];
float offset = (*modef)->interRange[1];
// Validate/modify the values.
if(duration == 0) duration = 1;
if(offset == -1)
{
offset = M_CycleIntoRange(MOBJ_TO_ID(mo), duration);
}
interp = M_CycleIntoRange(ddMapTime / duration + offset, 1);
worldTime = true;
}
else
{
// Calculate the currently applicable intermark.
interp = 1.0f - (mo->tics - frameTimePos) / float( st.tics );
}
/*#if _DEBUG
if(mo->dPlayer)
{
qDebug() << "itp:" << interp << " mot:" << mo->tics << " stt:" << st.tics;
}
#endif*/
// First find the modef for the interpoint. Intermark is 'stronger' than interrange.
// Scan interlinks.
while((*modef)->interNext && (*modef)->interNext->interMark <= interp)
{
*modef = (*modef)->interNext;
}
if(!worldTime)
{
// Scale to the modeldef's interpolation range.
interp = (*modef)->interRange[0] + interp * ((*modef)->interRange[1] -
(*modef)->interRange[0]);
}
// What would be the next model? Check interlinks first.
if((*modef)->interNext)
{
*nextmodef = (*modef)->interNext;
}
else if(worldTime)
{
*nextmodef = getStateModel(st, mo->selector);
}
else if(st.nextState > 0) // Check next state.
{
// Find the appropriate state based on interrange.
state_t* it = states + st.nextState;
bool foundNext = false;
if((*modef)->interRange[1] < 1)
{
// Current modef doesn't interpolate to the end, find the proper destination
// modef (it isn't just the next one). Scan the states that follow (and
// interlinks of each).
bool stopScan = false;
int max = 20; // Let's not be here forever...
while(!stopScan)
{
if(!((!modelDefForState(it - states) ||
getStateModel(*it, mo->selector)->interRange[0] > 0) &&
it->nextState > 0))
{
stopScan = true;
}
else
{
// Scan interlinks, then go to the next state.
modeldef_t* mdit;
if((mdit = getStateModel(*it, mo->selector)) && mdit->interNext)
{
forever
{
mdit = mdit->interNext;
if(mdit)
{
if(mdit->interRange[0] <= 0) // A new beginning?
{
*nextmodef = mdit;
foundNext = true;
}
}
if(!mdit || foundNext)
{
break;
}
}
}
if(foundNext)
{
stopScan = true;
}
else
{
it = states + it->nextState;
}
}
if(max-- <= 0)
stopScan = true;
}
// @todo What about max == -1? What should 'it' be then?
}
if(!foundNext)
*nextmodef = getStateModel(*it, mo->selector);
}
// Is this group disabled?
if(useModels >= 2 && (*modef)->group & useModels)
{
*modef = *nextmodef = NULL;
return -1;
}
return interp;
}
/**
* Scales the given model so that it'll be 'destHeight' units tall. Measurements
* are based on submodel zero. Scale is applied uniformly.
*/
static void scaleModel(modeldef_t &mf, float destHeight, float offset)
{
if(!mf.subCount()) return;
submodeldef_t &smf = mf.subModelDef(0);
// No model to scale?
if(!smf.modelId) return;
// Find the top and bottom heights.
float top, bottom;
float height = Models_ToModel(smf.modelId)->frame(smf.frame).horizontalRange(&top, &bottom);
if(!height) height = 1;
float scale = destHeight / height;
for(int i = 0; i < 3; ++i)
{
mf.scale[i] = scale;
}
mf.offset[VY] = -bottom * scale + offset;
}
static void scaleModelToSprite(modeldef_t &mf, int sprite, int frame)
{
spritedef_t &spr = sprites[sprite];
if(!spr.numFrames || spr.spriteFrames == NULL) return;
MaterialSnapshot const &ms = spr.spriteFrames[frame].mats[0]->prepare(Rend_SpriteMaterialSpec());
Texture const &tex = ms.texture(MTU_PRIMARY).generalCase();
int off = MAX_OF(0, -tex.origin().y - ms.height());
scaleModel(mf, ms.height(), off);
}
static float calcModelVisualRadius(modeldef_t *def)
{
if(!def || !def->subModelId(0)) return 0;
// Use the first frame bounds.
float min[3], max[3];
float maxRadius = 0;
for(uint i = 0; i < def->subCount(); ++i)
{
if(!def->subModelId(i)) break;
SubmodelDef &sub = def->subModelDef(i);
Models_ToModel(sub.modelId)->frame(sub.frame).getBounds(min, max);
// Half the distance from bottom left to top right.
float radius = (def->scale[VX] * (max[VX] - min[VX]) +
def->scale[VZ] * (max[VZ] - min[VZ])) / 3.5f;
if(radius > maxRadius)
maxRadius = radius;
}
return maxRadius;
}
/**
* Create a new modeldef or find an existing one. This is for ID'd models.
*/
static modeldef_t* getModelDefWithId(char const* id)
{
// ID defined?
if(!id || !id[0]) return NULL;
// First try to find an existing modef.
modeldef_t* md = Models_Definition(id);
if(md) return md;
// Get a new entry.
modefs.push_back(ModelDef(id));
return &modefs.back();
}
/**
* Create a new modeldef or find an existing one. There can be only one model
* definition associated with a state/intermark pair.