//-----------------------------------------------------------------------------
// Loads and parses the given JSON file pathname and returns a JSON object tree.
// The returned object must be Released after use.
JSON* JSON::Load(const char* path, const char** perror)
{
SysFile f;
if (!f.Open(path, File::Open_Read, File::Mode_Read))
{
AssignError(perror, "Failed to open file");
return NULL;
}
int len = f.GetLength();
uint8_t* buff = (uint8_t*)OVR_ALLOC(len + 1);
int bytes = f.Read(buff, len);
f.Close();
if (bytes == 0 || bytes != len)
{
OVR_FREE(buff);
return NULL;
}
// Ensure the result is null-terminated since Parse() expects null-terminated input.
buff[len] = '\0';
JSON* json = JSON::Parse((char*)buff, perror);
OVR_FREE(buff);
return json;
}
BinaryReader::BinaryReader( const char * path, const char ** perror ) :
Data( NULL ),
Size( 0 ),
Offset( 0 ),
Allocated( true )
{
SysFile f;
if ( !f.Open( path, File::Open_Read, File::Mode_Read ) )
{
if ( perror != NULL )
{
*perror = "Failed to open file";
}
return;
}
Size = f.GetLength();
Data = (UByte*) OVR_ALLOC( Size + 1 );
int bytes = f.Read( (UByte *)Data, Size );
if ( bytes != Size && perror != NULL )
{
*perror = "Failed to read file";
}
f.Close();
}
// Loads a texture from a disk TGA file.
IDirect3DTexture9* LoadTextureTga(HSWRenderParams& rParams, const char* pFilePath, uint8_t alpha)
{
SysFile sysFile;
if(sysFile.Open(pFilePath, FileConstants::Open_Read | FileConstants::Open_Buffered))
return LoadTextureTga(rParams, &sysFile, alpha);
return NULL;
}
//-----------------------------------------------------------------------------
// Serializes the JSON object and writes to the give file path
bool JSON::Save(const char* path)
{
SysFile f;
if (!f.Open(path, File::Open_Write | File::Open_Create | File::Open_Truncate, File::Mode_Write))
return false;
char* text = PrintValue(0, true);
if (text)
{
intptr_t len = OVR_strlen(text);
OVR_ASSERT(len <= (intptr_t)(int)len);
int bytes = f.Write((uint8_t*)text, (int)len);
f.Close();
OVR_FREE(text);
return (bytes == len);
}
else
{
return false;
}
}
bool XmlHandler::ReadFile(const char* fileName, OVR::Render::RenderDevice* pRender,
OVR::Render::Scene* pScene,
OVR::Array<Ptr<CollisionModel> >* pCollisions,
OVR::Array<Ptr<CollisionModel> >* pGroundCollisions,
bool srgbAware /*= false*/,
bool anisotropic /*= false*/)
{
if(pXmlDocument->LoadFile(fileName) != 0)
{
return false;
}
// Extract the relative path to our working directory for loading textures
filePath[0] = 0;
intptr_t pos = 0;
intptr_t len = strlen(fileName);
for(intptr_t i = len; i > 0; i--)
{
if (fileName[i-1]=='\\' || fileName[i-1]=='/')
{
memcpy(filePath, fileName, i);
filePath[i] = 0;
break;
}
}
// Load the textures
OVR_DEBUG_LOG_TEXT(("Loading textures..."));
XMLElement* pXmlTexture = pXmlDocument->FirstChildElement("scene")->FirstChildElement("textures");
OVR_ASSERT(pXmlTexture);
if (pXmlTexture)
{
pXmlTexture->QueryIntAttribute("count", &textureCount);
pXmlTexture = pXmlTexture->FirstChildElement("texture");
}
for(int i = 0; i < textureCount; ++i)
{
const char* textureName = pXmlTexture->Attribute("fileName");
intptr_t dotpos = strcspn(textureName, ".");
char fname[300];
if (pos == len)
{
OVR_sprintf(fname, 300, "%s", textureName);
}
else
{
OVR_sprintf(fname, 300, "%s%s", filePath, textureName);
}
int textureLoadFlags = 0;
textureLoadFlags |= srgbAware ? TextureLoad_SrgbAware : 0;
textureLoadFlags |= anisotropic ? TextureLoad_Anisotropic : 0;
SysFile* pFile = new SysFile(fname);
Ptr<Texture> texture;
if (textureName[dotpos + 1] == 'd' || textureName[dotpos + 1] == 'D')
{
// DDS file
Texture* tmp_ptr = LoadTextureDDSTopDown(pRender, pFile, textureLoadFlags);
if(tmp_ptr)
{
texture.SetPtr(*tmp_ptr);
}
}
else
{
Texture* tmp_ptr = LoadTextureTgaTopDown(pRender, pFile, textureLoadFlags, 255);
if(tmp_ptr)
{
texture.SetPtr(*tmp_ptr);
}
}
Textures.PushBack(texture);
pFile->Close();
pFile->Release();
pXmlTexture = pXmlTexture->NextSiblingElement("texture");
}
OVR_DEBUG_LOG_TEXT(("Done.\n"));
// Load the models
pXmlDocument->FirstChildElement("scene")->FirstChildElement("models")->
QueryIntAttribute("count", &modelCount);
OVR_DEBUG_LOG(("Loading models... %i models to load...", modelCount));
XMLElement* pXmlModel = pXmlDocument->FirstChildElement("scene")->
FirstChildElement("models")->FirstChildElement("model");
for(int i = 0; i < modelCount; ++i)
{
if (i % 15 == 0)
{
OVR_DEBUG_LOG_TEXT(("%i models remaining...", modelCount - i));
}
const char* name = pXmlModel->Attribute("name");
Models.PushBack(*new Model(Prim_Triangles, name));
bool isCollisionModel = false;
pXmlModel->QueryBoolAttribute("isCollisionModel", &isCollisionModel);
Models[i]->IsCollisionModel = isCollisionModel;
if (isCollisionModel)
{
Models[i]->Visible = false;
}
bool tree_c = (strcmp(name, "tree_C") == 0) || (strcmp(name, "Object03") == 0);
//read the vertices
OVR::Array<Vector3f> *vertices = new OVR::Array<Vector3f>();
ParseVectorString(pXmlModel->FirstChildElement("vertices")->FirstChild()->
ToText()->Value(), vertices);
for (unsigned int vertexIndex = 0; vertexIndex < vertices->GetSize(); ++vertexIndex)
{
vertices->At(vertexIndex).x *= -1.0f;
if (tree_c)
{ // Move the terrace tree closer to the house
vertices->At(vertexIndex).z += 0.5;
}
}
//read the normals
OVR::Array<Vector3f> *normals = new OVR::Array<Vector3f>();
ParseVectorString(pXmlModel->FirstChildElement("normals")->FirstChild()->
ToText()->Value(), normals);
for (unsigned int normalIndex = 0; normalIndex < normals->GetSize(); ++normalIndex)
{
normals->At(normalIndex).z *= -1.0f;
}
//read the textures
OVR::Array<Vector3f> *diffuseUVs = new OVR::Array<Vector3f>();
OVR::Array<Vector3f> *lightmapUVs = new OVR::Array<Vector3f>();
int diffuseTextureIndex = -1;
int lightmapTextureIndex = -1;
XMLElement* pXmlCurMaterial = pXmlModel->FirstChildElement("material");
while(pXmlCurMaterial != NULL)
{
if(pXmlCurMaterial->Attribute("name", "diffuse"))
{
pXmlCurMaterial->FirstChildElement("texture")->
QueryIntAttribute("index", &diffuseTextureIndex);
if(diffuseTextureIndex > -1)
{
ParseVectorString(pXmlCurMaterial->FirstChildElement("texture")->
FirstChild()->ToText()->Value(), diffuseUVs, true);
}
}
else if(pXmlCurMaterial->Attribute("name", "lightmap"))
{
pXmlCurMaterial->FirstChildElement("texture")->
QueryIntAttribute("index", &lightmapTextureIndex);
if(lightmapTextureIndex > -1)
{
XMLElement* firstChildElement = pXmlCurMaterial->FirstChildElement("texture");
XMLNode* firstChild = firstChildElement->FirstChild();
XMLText* text = firstChild->ToText();
const char* value = text->Value();
ParseVectorString(value, lightmapUVs, true);
}
}
pXmlCurMaterial = pXmlCurMaterial->NextSiblingElement("material");
}
//set up the shader
Ptr<ShaderFill> shader = *new ShaderFill(*pRender->CreateShaderSet());
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Vertex, VShader_MVP));
if(diffuseTextureIndex > -1)
{
shader->SetTexture(0, Textures[diffuseTextureIndex]);
if(lightmapTextureIndex > -1)
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_MultiTexture));
shader->SetTexture(1, Textures[lightmapTextureIndex]);
}
else
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_Texture));
}
}
else
{
shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_LitGouraud));
}
Models[i]->Fill = shader;
//add all the vertices to the model
const size_t numVerts = vertices->GetSize();
for(size_t v = 0; v < numVerts; ++v)
{
if(diffuseTextureIndex > -1)
{
if(lightmapTextureIndex > -1)
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
diffuseUVs->At(v).x, diffuseUVs->At(v).y, lightmapUVs->At(v).x, lightmapUVs->At(v).y,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
else
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
diffuseUVs->At(v).x, diffuseUVs->At(v).y, 0, 0,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
}
else
{
Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255, 255),
0, 0, 0, 0,
normals->At(v).x, normals->At(v).y, normals->At(v).z);
}
}
// Read the vertex indices for the triangles
const char* indexStr = pXmlModel->FirstChildElement("indices")->
FirstChild()->ToText()->Value();
size_t stringLength = strlen(indexStr);
for(size_t j = 0; j < stringLength; )
{
size_t k = j + 1;
for(; k < stringLength; ++k)
{
if (indexStr[k] == ' ')
break;
}
char text[20];
for(size_t l = 0; l < k - j; ++l)
{
text[l] = indexStr[j + l];
}
text[k - j] = '\0';
Models[i]->Indices.PushBack((unsigned short)atoi(text));
j = k + 1;
}
// Reverse index order to match original expected orientation
Array<uint16_t>& indices = Models[i]->Indices;
size_t indexCount = indices.GetSize();
for (size_t revIndex = 0; revIndex < indexCount/2; revIndex++)
{
unsigned short itemp = indices[revIndex];
indices[revIndex] = indices[indexCount - revIndex - 1];
indices[indexCount - revIndex - 1] = itemp;
}
delete vertices;
delete normals;
delete diffuseUVs;
delete lightmapUVs;
pScene->World.Add(Models[i]);
pScene->Models.PushBack(Models[i]);
pXmlModel = pXmlModel->NextSiblingElement("model");
}
OVR_DEBUG_LOG(("Done."));
//load the collision models
OVR_DEBUG_LOG(("Loading collision models... "));
XMLElement* pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("collisionModels");
if (pXmlCollisionModel)
{
pXmlCollisionModel->QueryIntAttribute("count", &collisionModelCount);
pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
}
XMLElement* pXmlPlane = NULL;
for(int i = 0; i < collisionModelCount; ++i)
{
Ptr<CollisionModel> cm = *new CollisionModel();
int planeCount = 0;
OVR_ASSERT(pXmlCollisionModel != NULL); // collisionModelCount should guarantee this.
if (pXmlCollisionModel)
{
pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
for(int j = 0; j < planeCount; ++j)
{
Vector3f norm;
pXmlPlane->QueryFloatAttribute("nx", &norm.x);
pXmlPlane->QueryFloatAttribute("ny", &norm.y);
pXmlPlane->QueryFloatAttribute("nz", &norm.z);
float D;
pXmlPlane->QueryFloatAttribute("d", &D);
D -= 0.5f;
if (i == 26)
D += 0.5f; // tighten the terrace collision so player can move right up to rail
Planef p(norm.z, norm.y, norm.x * -1.0f, D);
cm->Add(p);
pXmlPlane = pXmlPlane->NextSiblingElement("plane");
}
if (pCollisions)
pCollisions->PushBack(cm);
pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
}
}
OVR_DEBUG_LOG(("done."));
//load the ground collision models
OVR_DEBUG_LOG(("Loading ground collision models..."));
pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("groundCollisionModels");
OVR_ASSERT(pXmlCollisionModel);
if (pXmlCollisionModel)
{
pXmlCollisionModel->QueryIntAttribute("count", &groundCollisionModelCount);
pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
pXmlPlane = NULL;
for(int i = 0; i < groundCollisionModelCount; ++i)
{
Ptr<CollisionModel> cm = *new CollisionModel();
int planeCount = 0;
pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
for(int j = 0; j < planeCount; ++j)
{
Vector3f norm;
pXmlPlane->QueryFloatAttribute("nx", &norm.x);
pXmlPlane->QueryFloatAttribute("ny", &norm.y);
pXmlPlane->QueryFloatAttribute("nz", &norm.z);
float D = 0.f;
pXmlPlane->QueryFloatAttribute("d", &D);
Planef p(norm.z, norm.y, norm.x * -1.0f, D);
cm->Add(p);
pXmlPlane = pXmlPlane->NextSiblingElement("plane");
}
if (pGroundCollisions)
pGroundCollisions->PushBack(cm);
pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
}
}
OVR_DEBUG_LOG(("done."));
return true;
}