void WINDOW::Shutdown(void) //PROPERLY KILL WINDOW
{
//Delete font display lists
glDeleteLists(base, 96);
if (fullscreen)
{
ChangeDisplaySettings(NULL, 0); //restore desktop mode
ShowCursor(TRUE); //show mouse cursor
}
errorLog.OutputNewline();
if(hRC) //have a rendering context?
{
if(!wglMakeCurrent(NULL, NULL)) //try to release rend cont
{
errorLog.OutputError("Release of DC and RC Failed.");
}
else
errorLog.OutputSuccess("DC and RC released.");
if(!wglDeleteContext(hRC)) //try to delete RC
{
errorLog.OutputError("Release Rendering Context Failed.");
}
else
errorLog.OutputSuccess("Rendering Context Released.");
hRC=NULL; //set RC to NULL
}
if(hDC && !ReleaseDC(hWnd, hDC)) //Are we able to release DC?
{
errorLog.OutputError("Release of Device Context Failed.");
hDC=NULL;
}
else
errorLog.OutputSuccess("Device Context Released.");
if(hWnd && !DestroyWindow(hWnd)) //Can we destroy window?
{
errorLog.OutputError("Could not release hWnd");
hWnd=NULL;
}
else
errorLog.OutputSuccess("hWnd released.");
if (!UnregisterClass("OpenGL", hInstance)) //can we unreg. class?
{
errorLog.OutputError("Could Not Unregister Class.");
hInstance=NULL;
}
else
errorLog.OutputSuccess("Class unregistered.");
}
///////////////////BSP::LoadVertices////////
////////////////////////////////////////////
bool BSP::LoadVertices(FILE * file)
{
//calculate number of vertices
numVertices=header.directoryEntries[bspVertices].length/sizeof(BSP_LOAD_VERTEX);
//Create space for this many BSP_LOAD_VERTICES
BSP_LOAD_VERTEX * loadVertices=new BSP_LOAD_VERTEX[numVertices];
if(!loadVertices)
{
errorLog.OutputError("Unable to allocate memory for %d BSP_LOAD_VERTEXes", numVertices);
return false;
}
//go to vertices in file
fseek(file, header.directoryEntries[bspVertices].offset, SEEK_SET);
//read in the vertices
fread(loadVertices, header.directoryEntries[bspVertices].length, 1, file);
//Convert to BSP_VERTEXes
vertices=new BSP_VERTEX[numVertices];
if(!vertices)
{
errorLog.OutputError("Unable to allocate memory for vertices");
return false;
}
for(int i=0; i<numVertices; ++i)
{
//swap y and z and negate z
vertices[i].position.x=loadVertices[i].position.x;
vertices[i].position.y=loadVertices[i].position.z;
vertices[i].position.z=-loadVertices[i].position.y;
//scale down
vertices[i].position/=64;
//Transfer texture coordinates (Invert t)
vertices[i].decalS=loadVertices[i].decalS;
vertices[i].decalT=-loadVertices[i].decalT;
//Transfer lightmap coordinates
vertices[i].lightmapS=loadVertices[i].lightmapS;
vertices[i].lightmapT=loadVertices[i].lightmapT;
}
if(loadVertices)
delete [] loadVertices;
loadVertices=NULL;
return true;
}
//Set up variables
bool DemoInit()
{
if(!window.Init("Project Template", 640, 480, 32, 24, 8, WINDOWED_SCREEN))
return 0; //quit if not created
SetUpARB_multitexture();
SetUpEXT_texture3D();
SetUpEXT_texture_edge_clamp();
SetUpNV_register_combiners();
SetUpNV_texture_shader();
SetUpNV_vertex_program();
if( !EXT_texture_edge_clamp_supported || !ARB_multitexture_supported ||
!NV_vertex_program_supported || !NV_register_combiners_supported)
return false;
//Check we have at least 3 texture units
GLint maxTextureUnitsARB;
glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &maxTextureUnitsARB);
if(maxTextureUnitsARB<3)
{
errorLog.OutputError("I require at least 3 texture units");
return false;
}
//Set light colors
lightColors[0].Set(1.0f, 1.0f, 1.0f, 1.0f);
lightColors[1].Set((float)47/255, (float)206/255, (float)240/255, 1.0f);
lightColors[2].Set((float)254/255, (float)48/255, (float)18/255, 1.0f);
lightColors[3].Set((float)83/255, (float)243/255, (float)29/255, 1.0f);
//Load textures
//Decal image
decalImage.Load("decal.tga");
glGenTextures(1, &decalTexture);
glBindTexture(GL_TEXTURE_2D, decalTexture);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, decalImage.width, decalImage.height,
0, decalImage.format, GL_UNSIGNED_BYTE, decalImage.data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Create light textures
if(!InitLightTextures( atten1DTexture, atten2DTexture, atten3DTexture,
gaussian1DTexture, gaussian2DTexture))
return false;
camera.Init(VECTOR3D(0.0f, 0.0f, 3.5f));
//reset timer for start
timer.Reset();
return true;
}
//Load - load a texture from a file
bool IMAGE::Load(char * filename)
{
//Clear the data if already used
if(data)
delete [] data;
data=NULL;
bpp=0;
width=0;
height=0;
format=0;
int filenameLength=strlen(filename);
if( strncmp((filename+filenameLength-3), "BMP", 3)==0 ||
strncmp((filename+filenameLength-3), "bmp", 3)==0)
return LoadBMP(filename);
if( strncmp((filename+filenameLength-3), "PCX", 3)==0 ||
strncmp((filename+filenameLength-3), "pcx", 3)==0)
return LoadPCX(filename);
if( strncmp((filename+filenameLength-3), "TGA", 3)==0 ||
strncmp((filename+filenameLength-3), "tga", 3)==0)
return LoadTGA(filename);
errorLog.OutputError("%s does not end in \".tga\", \".bmp\" or \"pcx\"", filename);
return false;
}
bool PBUFFER::MakeCurrent()
{
if(!wglMakeCurrent(hDC, hRC))
{
errorLog.OutputError("Unable to change current context");
return false;
}
return true;
}
//Load a TGA texture
bool IMAGE::LoadTGA(char * filename)
{
unsigned char UncompressedTGAHeader[12]={0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char CompressedTGAHeader[12]={0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0};
unsigned char Uncompressed8BitTGAHeader[12]={0, 1, 1, 0, 0, 0, 1, 24, 0, 0, 0, 0};
unsigned char TGAcompare[12]; //Used to compare TGA header
FILE * file = fopen(filename, "rb"); //Open the TGA file
if( file==NULL ) //Does the file exist?
{
errorLog.OutputError("%s does not exist", filename);
return false;
}
//read the header
fread(TGAcompare, 1, sizeof(TGAcompare), file);
fclose(file);
if(memcmp(UncompressedTGAHeader, TGAcompare, sizeof(UncompressedTGAHeader))==0)
{
return LoadUncompressedTrueColorTGA(filename);
}
else if(memcmp(CompressedTGAHeader, TGAcompare, sizeof(CompressedTGAHeader))==0)
{
return LoadCompressedTrueColorTGA(filename);
}
else if(memcmp(Uncompressed8BitTGAHeader, TGAcompare, sizeof(Uncompressed8BitTGAHeader))==0)
{
return LoadUncompressed8BitTGA(filename);
}
else
{
errorLog.OutputError("%s is not a recognised type of TGA", filename);
return false;
}
return false;
}
bool IMAGE::LoadBMP(char * filename)
{
FILE * file; //the texture file
BITMAPFILEHEADER fileHeader; //bitmap file header
BITMAPINFOHEADER infoHeader; //bitmap info header
//open file for reading
file=fopen(filename, "rb");
if(file==NULL)
{
errorLog.OutputError("Unable to open %s", filename);
return false;
}
//read the file header
fread(&fileHeader, sizeof(BITMAPFILEHEADER), 1, file);
//check it's a bitmap
if(fileHeader.bfType != BITMAP_ID)
{
fclose(file);
errorLog.OutputError("%s is not a legal .BMP", filename);
return false;
}
//read in the information header
fread(&infoHeader, sizeof(BITMAPINFOHEADER), 1, file);
//close the file
fclose(file);
//discover the bpp
if(infoHeader.biBitCount==24)
return Load24BitBMP(filename);
if(infoHeader.biBitCount==8)
return Load8BitBMP(filename);
errorLog.OutputError("%s has an unknown bpp", filename);
return false;
}
//ENTRY POINT FOR APPLICATION
//CALL WINDOW CREATION ROUTINE, DEAL WITH MESSAGES, WATCH FOR INTERACTION
int WINAPI WinMain( HINSTANCE hInstance, //instance
HINSTANCE hPrevInstance, //Previous Instance
LPSTR lpCmdLine, //command line parameters
int nCmdShow) //Window show state
{
//Initiation
errorLog.Init("Error Log.txt");
//init variables etc, then GL
if(!DemoInit())
{
errorLog.OutputError("Demo Initiation failed");
return 0;
}
else
errorLog.OutputSuccess("Demo Initiation Successful");
if(!GLInit())
{
errorLog.OutputError("OpenGL Initiation failed");
return 0;
}
else
errorLog.OutputSuccess("OpenGL Initiation Successful");
//Main Loop
for(;;)
{
if(!(window.HandleMessages())) break;//handle windows messages, quit if returns false
UpdateFrame();
RenderFrame();
}
DemoShutdown();
errorLog.OutputSuccess("Exiting...");
return (window.msg.wParam); //Exit The Program
}
void PBUFFER::Shutdown(void)
{
if(hRC) //have a rendering context?
{
if(!wglDeleteContext(hRC)) //try to delete RC
{
errorLog.OutputError("Release of Pbuffer Rendering Context Failed.");
}
hRC=NULL; //set RC to NULL
}
if(hDC && !wglReleasePbufferDCARB(hBuffer, hDC)) //Are we able to release DC?
{
errorLog.OutputError("Release of Pbuffer Device Context Failed.");
hDC=NULL;
}
if(!wglDestroyPbufferARB(hBuffer))
{
errorLog.OutputError("Unable to destroy pbuffer");
}
}
bool LoadNV_vertex_program(char * filename, GLuint programID)
{
//load from file
std::ifstream vpFile(filename, std::ios::in | std::ios::binary);
if(vpFile.fail())
{
printf("Unable to open vertex program\n");
return false;
}
//calculate the size of the file
vpFile.seekg(0, std::ios::end);
int vpSize=vpFile.tellg();
vpFile.seekg(0, std::ios::beg);
//allocate memory
unsigned char * vpText=new unsigned char[vpSize];
if(!vpText)
{
printf("Unable to allocate space for vertex program text\n");
return false;
}
//read file
vpFile.read(reinterpret_cast<char *>(vpText), vpSize);
vpFile.close();
//load program
glLoadProgramNV(GL_VERTEX_PROGRAM_NV, programID, vpSize, vpText);
if(vpText)
delete [] vpText;
vpText=NULL;
//Output if there was an error
int errorPos;
glGetIntegerv(GL_PROGRAM_ERROR_POSITION_NV, &errorPos);
if(errorPos!=-1)
{
errorLog.OutputError("Program error at position %d in %s\n", errorPos, filename);
return false;
}
else
errorLog.OutputSuccess("%s loaded correctly", filename);
return true;
}
bool SetUpEXT_texture_edge_clamp()
{
//Check for support
char * extensionString=(char *)glGetString(GL_EXTENSIONS);
char * extensionName="GL_EXT_texture_edge_clamp";
char * endOfString; //store pointer to end of string
unsigned int distanceToSpace; //distance to next space
endOfString=extensionString+strlen(extensionString);
//loop through string
while(extensionString<endOfString)
{
//find distance to next space
distanceToSpace=strcspn(extensionString, " ");
//see if we have found extensionName
if((strlen(extensionName)==distanceToSpace) &&
(strncmp(extensionName, extensionString, distanceToSpace)==0))
{
EXT_texture_edge_clamp_supported=true;
}
//if not, move on
extensionString+=distanceToSpace+1;
}
if(!EXT_texture_edge_clamp_supported)
{
errorLog.OutputError("EXT_texture_edge_clamp unsupported!");
return false;
}
errorLog.OutputSuccess("EXT_texture_edge_clamp supported!");
//get function pointers
//none specified
return true;
}
void IMAGE::FlipVertically()
{
//dont flip zero or 1 height images
if(height==0 || height==1)
return;
int rowsToSwap=0;
//see how many rows to swap
if(height%2==1)
rowsToSwap=(height-1)/2;
else
rowsToSwap=height/2;
//create space for a temporary row
GLubyte * tempRow=new GLubyte[width*bpp/8];
if(!tempRow)
{
errorLog.OutputError("Unable to flip image, unable to create space for temporary row");
return;
}
//loop through rows to swap
for(int i=0; i<rowsToSwap; ++i)
{
//copy row i into temp
memcpy(tempRow, &data[i*width*bpp/8], width*bpp/8);
//copy row height-i-1 to row i
memcpy(&data[i*width*bpp/8], &data[(height-i-1)*width*bpp/8], width*bpp/8);
//copy temp into row height-i-1
memcpy(&data[(height-i-1)*width*bpp/8], tempRow, width*bpp/8);
}
//free tempRow
if(tempRow)
delete [] tempRow;
tempRow=NULL;
}
//load in an 8 bit greyscale TGA as an alpha channel
bool IMAGE::LoadAlphaTGA(char * filename)
{
unsigned char TGAHeader[12]={0, 1, 1, 0, 0, 0, 1, 24, 0, 0, 0, 0};
unsigned char TGAcompare[12]; //Used to compare TGA header
unsigned char header[6]; //First 6 useful bytes of the header
errorLog.OutputSuccess("Loading %s in LoadAlphaTGA()", filename);
if(!(format==GL_RGB || format==GL_RGBA))
{
errorLog.OutputError("Can only load an alpha channel to RGB / RGBA format images. %s caused error", filename);
return false;
}
FILE * file = fopen(filename, "rb"); //Open the TGA file
if(file == NULL) //Does the file exist?
{
errorLog.OutputError("%s does not exist.", filename);
return false;
}
if( fread(TGAcompare, 1, sizeof(TGAcompare), file)!=sizeof(TGAcompare)|| //Are there 12 bytes to read?
memcmp(TGAHeader, TGAcompare, sizeof(TGAHeader))!=0 || //Is the header correct?
fread(header, 1, sizeof(header), file)!=sizeof(header)) //Read next 6 bytes
{
fclose(file); //If anything else failed, close the file
errorLog.OutputError("Could not load %s correctly, general failure.", filename);
return false;
}
//save data into class member variables
unsigned int alphaWidth= header[1]*256+header[0]; //determine the image width
unsigned int alphaHeight= header[3]*256+header[2]; //determine image height
int alphaBpp= header[4];
if( alphaWidth<=0 || //if width <=0
alphaHeight<=0 || //or height<=0
alphaBpp!=8) //bpp not 8
{
fclose(file); //close the file
errorLog.OutputError("%s's height or width is less than zero, or the TGA is not 8 bpp.", filename);
return false;
}
//check it is the same size as the image
if(alphaWidth!=width || alphaHeight!=height)
{
errorLog.OutputError("%s is not the same size as the color texture", filename);
return false;
}
//make space for palette
unsigned char * palette=new unsigned char[256*3];
if(!palette)
{
errorLog.OutputError("Unable to allocate memory for palette");
return false;
}
//load the palette
fread(palette, 256*3, 1, file);
//we dont use the palette
delete [] palette;
palette=NULL;
//allocate space for alpha values
unsigned char * values=new unsigned char[width*height];
if(!values)
{
errorLog.OutputError("Unable to allocate memory for alpha values");
return false;
}
//load indices
fread(values, 1, alphaWidth*alphaHeight, file);
//close the file
fclose(file);
//now put in the alpha data
if(format==GL_RGBA)
{
for(unsigned int i=0; i<width*height; i++)
{
data[i*4+3]=values[i];
}
}
else if(format==GL_RGB)
{
unsigned char * tempData=new unsigned char[width*height*4];
if(!tempData)
{
errorLog.OutputError("Unable to allocate memory for Temporary Data");
return false;
}
for(unsigned int i=0; i<width*height; i++)
{
tempData[i*4+0]=data[i*3+0];
tempData[i*4+1]=data[i*3+1];
tempData[i*4+2]=data[i*3+2];
tempData[i*4+3]=values[i];
}
//update member variables
bpp=32;
format=GL_RGBA;
if(data)
delete [] data;
data=tempData;
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
//load a compressed TGA texture (24 or 32 bpp)
bool IMAGE::LoadCompressedTrueColorTGA(char * filename)
{
unsigned char TGAheader[12]={0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //Compressed TGA header
unsigned char TGAcompare[12]; //Used to compare TGA header
unsigned char header[6]; //First 6 useful bytes of the header
unsigned int bytesPerPixel; //bytes per pixel
unsigned int imageSize; //Stores Image size when in RAM
errorLog.OutputSuccess("Loading %s in LoadCompressedTGA()", filename);
FILE * file = fopen(filename, "rb"); //Open the TGA file
if(file == NULL) //Does the file exist?
{
errorLog.OutputError("%s does not exist.", filename);
return false;
}
if( fread(TGAcompare, 1, sizeof(TGAcompare), file)!=sizeof(TGAcompare)|| //Are there 12 bytes to read?
memcmp(TGAheader, TGAcompare, sizeof(TGAheader))!=0 || //Is the header correct?
fread(header, 1, sizeof(header), file)!=sizeof(header)) //Read next 6 bytes
{
fclose(file); //If anything else failed, close the file
errorLog.OutputError("Could not load %s correctly, general failure.", filename);
return false;
}
//save data into class member variables
width= header[1]*256+header[0]; //determine the image width
height= header[3]*256+header[2]; //determine image height
bpp= header[4];
if( width<=0 || //if width <=0
height<=0 || //or height<=0
bpp!=24 && bpp!=32) //bpp not 24 or 32
{
fclose(file); //close the file
errorLog.OutputError("%s's height or width is less than zero, or the TGA is not 24 or 32 bpp.", filename);
return false;
}
//set format
if(bpp == 24)
format=GL_RGB;
else
format=GL_RGBA;
bytesPerPixel=bpp/8; //calc bytes per pixel
imageSize=width*height*bytesPerPixel; //calc memory required
data=new unsigned char[imageSize]; //reserve the memory for the data
if(!data) //Does the storage memory exist?
{
errorLog.OutputError("Unable to allocate memory for %s image", filename);
fclose(file);
return false;
}
//read in the image data
int pixelCount = height*width;
int currentPixel= 0;
int currentByte = 0;
unsigned char * colorBuffer=new unsigned char[bytesPerPixel];
do
{
unsigned char chunkHeader=0;
if(fread(&chunkHeader, sizeof(unsigned char), 1, file) == 0)
{
errorLog.OutputError("Could not read RLE chunk header");
if(file)
fclose(file);
if(data)
delete [] data;
return false;
}
if(chunkHeader<128) //Read raw color values
{
chunkHeader++;
for(short counter=0; counter<chunkHeader; counter++)
{
if(fread(colorBuffer, 1, bytesPerPixel, file) != bytesPerPixel)
{
errorLog.OutputError("Unable to read %s image data", filename);
if(file)
fclose(file);
if(colorBuffer)
delete [] colorBuffer;
if(data)
delete [] data;
return false;
}
//transfer pixel color to data (swapping r and b values)
data[currentByte] = colorBuffer[2];
data[currentByte+1] = colorBuffer[1];
data[currentByte+2] = colorBuffer[0];
if(bytesPerPixel==4)
data[currentByte+3]=colorBuffer[3];
currentByte+=bytesPerPixel;
currentPixel++;
if(currentPixel > pixelCount)
{
errorLog.OutputError("Too many pixels read");
if(file)
fclose(file);
if(colorBuffer)
delete [] colorBuffer;
if(data)
delete [] data;
return false;
}
}
}
else //chunkHeader>=128
{
chunkHeader-=127;
if(fread(colorBuffer, 1, bytesPerPixel, file) != bytesPerPixel)
{
errorLog.OutputError("Unable to read %s image data", filename);
if(file)
fclose(file);
if(colorBuffer)
delete [] colorBuffer;
if(data)
delete [] data;
return false;
}
for(short counter=0; counter<chunkHeader; counter++)
{
//transfer pixel color to data (swapping r and b values)
data[currentByte] = colorBuffer[2];
data[currentByte+1] = colorBuffer[1];
data[currentByte+2] = colorBuffer[0];
if(bytesPerPixel==4)
data[currentByte+3]=colorBuffer[3];
currentByte+=bytesPerPixel;
currentPixel++;
if(currentPixel > pixelCount)
{
errorLog.OutputError("Too many pixels read");
if(file)
fclose(file);
if(colorBuffer)
delete [] colorBuffer;
if(data)
delete [] data;
return false;
}
}
}
}while(currentPixel<pixelCount);
fclose(file);
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
//load an uncompressed TGA texture (24 or 32 bpp)
bool IMAGE::LoadUncompressedTrueColorTGA(char * filename)
{
unsigned char TGAheader[12]={0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //Uncompressed TGA header
unsigned char TGAcompare[12]; //Used to compare TGA header
unsigned char header[6]; //First 6 useful bytes of the header
unsigned int bytesPerPixel; //bytes per pixel
unsigned int imageSize; //Stores Image size when in RAM
errorLog.OutputSuccess("Loading %s in LoadUncompressedTGA()", filename);
FILE * file = fopen(filename, "rb"); //Open the TGA file
if(file == NULL) //Does the file exist?
{
errorLog.OutputError("%s does not exist.", filename);
return false;
}
if( fread(TGAcompare, 1, sizeof(TGAcompare), file)!=sizeof(TGAcompare)|| //Are there 12 bytes to read?
memcmp(TGAheader, TGAcompare, sizeof(TGAheader))!=0 || //Is the header correct?
fread(header, 1, sizeof(header), file)!=sizeof(header)) //Read next 6 bytes
{
fclose(file); //If anything else failed, close the file
errorLog.OutputError("Could not load %s correctly, general failure.", filename);
return false;
}
//save data into class member variables
width= header[1]*256+header[0]; //determine the image width
height= header[3]*256+header[2]; //determine image height
bpp= header[4];
if( width<=0 || //if width <=0
height<=0 || //or height<=0
bpp!=24 && bpp!=32) //bpp not 24 or 32
{
fclose(file); //close the file
errorLog.OutputError("%s's height or width is less than zero, or the TGA is not 24 or 32 bpp.", filename);
return false;
}
//set format
if(bpp == 24)
format=GL_RGB;
else
format=GL_RGBA;
bytesPerPixel=bpp/8; //calc bytes per pixel
imageSize=width*height*bytesPerPixel; //calc memory required
data=new unsigned char[imageSize]; //reserve the memory for the data
if( data==NULL) //Does the storage memory exist?
{
errorLog.OutputError("Unable to allocate memory for %s image", filename);
fclose(file);
return false;
}
//read in the image data
if(fread(data, 1, imageSize, file)!=imageSize) //Does the image size match the required?
{ //If not
if(data) //If data loaded
delete [] data; //free memory
errorLog.OutputError("Could not read %s image data", filename);
fclose(file); //close file
return false;
}
fclose(file);
//data is in BGR format
//swap b and r
for(int i=0; i<(int)imageSize; i+=bytesPerPixel)
{
//repeated XOR to swap bytes 0 and 2
data[i] ^= data[i+2] ^= data[i] ^= data[i+2];
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
void WINDOW::SaveScreenshot(void)
{
FILE * file;
//first calculate the filename to save to
char filename[32];
for(int i=0; i<1000; i++)
{
sprintf(filename, "screen%03d.tga", i);
//try opening this file - if not possible, use this filename
file=fopen(filename, "rb");
if(!file)
{
break;
}
//otherwise, the file exists, try next, except if this is the last one
fclose(file);
if(i==999)
{
errorLog.OutputError("No space to save screenshot - 0-999 exist");
return;
}
}
errorLog.OutputSuccess("Saving %s", filename);
GLubyte TGAheader[12]={0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0}; //Uncompressed TGA header
GLubyte infoHeader[6];
unsigned char * data=new unsigned char[4*width*height];
if(!data)
{
errorLog.OutputError("Unable to allocate memory for screen data");
return;
}
//read in the screen data
glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
//data needs to be in BGR format
//swap b and r
for(int i=0; i<(int)width*height*4; i+=4)
{
//repeated XOR to swap bytes 0 and 2
data[i] ^= data[i+2] ^= data[i] ^= data[i+2];
}
//open the file
file = fopen(filename, "wb");
//save header
fwrite(TGAheader, 1, sizeof(TGAheader), file);
//save info header
infoHeader[0]=(width & 0x00FF);
infoHeader[1]=(width & 0xFF00) >> 8;
infoHeader[2]=(height & 0x00FF);
infoHeader[3]=(height & 0xFF00) >> 8;
infoHeader[4]=32;
infoHeader[5]=0;
//save info header
fwrite(infoHeader, 1, sizeof(infoHeader), file);
//save the image data
fwrite(data, 1, width*height*4, file);
fclose(file);
errorLog.OutputSuccess("Saved Screenshot: %s", filename);
return;
}
//load an 8 bit uncompressed paletted TGA
bool IMAGE::LoadUncompressed8BitTGA(char * filename)
{
unsigned char TGAHeader[12]={0, 1, 1, 0, 0, 0, 1, 24, 0, 0, 0, 0};
unsigned char TGAcompare[12]; //Used to compare TGA header
unsigned char header[6]; //First 6 useful bytes of the header
errorLog.OutputSuccess("Loading %s in LoadUncompressed8BitTGA()", filename);
FILE * file = fopen(filename, "rb"); //Open the TGA file
if(file == NULL) //Does the file exist?
{
errorLog.OutputError("%s does not exist.", filename);
return false;
}
if( fread(TGAcompare, 1, sizeof(TGAcompare), file)!=sizeof(TGAcompare)|| //Are there 12 bytes to read?
memcmp(TGAHeader, TGAcompare, sizeof(TGAHeader))!=0 || //Is the header correct?
fread(header, 1, sizeof(header), file)!=sizeof(header)) //Read next 6 bytes
{
fclose(file); //If anything else failed, close the file
errorLog.OutputError("Could not load %s correctly, general failure.", filename);
return false;
}
//save data into class member variables
width= header[1]*256+header[0]; //determine the image width
height= header[3]*256+header[2]; //determine image height
bpp= header[4];
if( width<=0 || //if width <=0
height<=0 || //or height<=0
bpp!=8) //bpp not 8
{
fclose(file); //close the file
errorLog.OutputError("%s's height or width is less than zero, or the TGA is not 8 bpp.", filename);
return false;
}
//set format
format=GL_RGB;
//make space for palette
unsigned char * palette=new unsigned char[256*3];
if(!palette)
{
errorLog.OutputError("Unable to allocate memory for palette");
return false;
}
//load the palette
fread(palette, 256*3, 1, file);
//allocate space for color indices
unsigned char * indices=new unsigned char[width*height];
if(!indices)
{
errorLog.OutputError("Unable to allocate memory for indices");
return false;
}
//load indices
fread(indices, 1, width*height, file);
//close the file
fclose(file);
//allocate space for the image data
data=new unsigned char[width*height*3];
if(!data)
{
fclose(file);
errorLog.OutputError("Unable to allocate memory for %s", filename);
return false;
}
//calculate the color values
for(unsigned int currentRow=0; currentRow<height; currentRow++)
{
for(unsigned int i=0; i<width; i++)
{
data[(currentRow*width+i)*3+0]=palette[indices[currentRow*width+i]*3+2];
data[(currentRow*width+i)*3+1]=palette[indices[currentRow*width+i]*3+1];
data[(currentRow*width+i)*3+2]=palette[indices[currentRow*width+i]*3+0];//BGR
}
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
////////////////////BSP::Load///////////////
////////////////////////////////////////////
bool BSP::Load(char * filename, int curveTesselation)
{
FILE * file;
file=fopen(filename, "rb");
if(!file)
{
errorLog.OutputError("Unable to open %s", filename);
return false;
}
//read in header
fread(&header, sizeof(BSP_HEADER), 1, file);
//check header data is correct
if( header.string[0]!='I' || header.string[1]!='B' ||
header.string[2]!='S' || header.string[3]!='P' ||
header.version !=0x2E )
{
errorLog.OutputError("%s is not a version 0x2E .bsp map file", filename);
return false;
}
//Load in vertices
if(!LoadVertices(file))
return false;
//Load in mesh indices
//Calculate number of indices
int numMeshIndices=header.directoryEntries[bspMeshIndices].length/sizeof(int);
//Create space
meshIndices=new int[numMeshIndices];
if(!meshIndices)
{
errorLog.OutputError("Unable to allocate memory for %d mesh indices", numMeshIndices);
return false;
}
//read in the mesh indices
fseek(file, header.directoryEntries[bspMeshIndices].offset, SEEK_SET);
fread(meshIndices, header.directoryEntries[bspMeshIndices].length, 1, file);
//Load in faces
if(!LoadFaces(file, curveTesselation))
return false;
//Load textures
if(!LoadTextures(file))
return false;
//Load Lightmaps
if(!LoadLightmaps(file))
return false;
//Load BSP Data
if(!LoadBSPData(file))
return false;
//Load in entity string
entityString=new char[header.directoryEntries[bspEntities].length];
if(!entityString)
{
errorLog.OutputError( "Unable to allocate memory for %d length entity string",
header.directoryEntries[bspEntities].length);
return false;
}
//Go to entity string in file
fseek(file, header.directoryEntries[bspEntities].offset, SEEK_SET);
fread(entityString, 1, header.directoryEntries[bspEntities].length, file);
//Output the entity string
//errorLog.OutputSuccess("Entity String: %s", entityString);
fclose(file);
errorLog.OutputSuccess("%s Loaded successfully", filename);
return true;
}
bool TORUS::InitTorus()
{
numVertices=(torusPrecision+1)*(torusPrecision+1);
numIndices=2*torusPrecision*torusPrecision*3;
vertices=new TORUS_VERTEX[numVertices];
if(!vertices)
{
errorLog.OutputError("Unable to allocate memory for torus vertices");
return false;
}
indices=new unsigned int[numIndices];
if(!indices)
{
errorLog.OutputError("Unable to allocate memory for torus indices");
return false;
}
//calculate the first ring - inner radius 4, outer radius 1.5
for(int i=0; i<torusPrecision+1; i++)
{
vertices[i].position=VECTOR3D(1.5f, 0.0f, 0.0f).GetRotatedZ(i*360.0f/torusPrecision)+
VECTOR3D(4.0f, 0.0f, 0.0f);
vertices[i].s=0.0f;
vertices[i].t=(float)i/torusPrecision;
vertices[i].sTangent.Set(0.0f, 0.0f, -1.0f);
vertices[i].tTangent=VECTOR3D(0.0f, -1.0f, 0.0f).GetRotatedZ(i*360.0f/torusPrecision);
vertices[i].normal=vertices[i].tTangent.
CrossProduct(vertices[i].sTangent);
}
//rotate this to get other rings
for(int ring=1; ring<torusPrecision+1; ring++)
{
for(int i=0; i<torusPrecision+1; i++)
{
vertices[ring*(torusPrecision+1)+i].position=vertices[i].position.GetRotatedY(ring*360.0f/torusPrecision);
vertices[ring*(torusPrecision+1)+i].s=2.0f*ring/torusPrecision;
vertices[ring*(torusPrecision+1)+i].t=vertices[i].t;
vertices[ring*(torusPrecision+1)+i].sTangent=vertices[i].sTangent.GetRotatedY(ring*360.0f/torusPrecision);
vertices[ring*(torusPrecision+1)+i].tTangent=vertices[i].tTangent.GetRotatedY(ring*360.0f/torusPrecision);
vertices[ring*(torusPrecision+1)+i].normal=vertices[i].normal.GetRotatedY(ring*360.0f/torusPrecision);
}
}
//calculate the indices
for(int ring=0; ring<torusPrecision; ring++)
{
for(int i=0; i<torusPrecision; i++)
{
indices[((ring*torusPrecision+i)*2)*3+0]=ring*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2)*3+1]=(ring+1)*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2)*3+2]=ring*(torusPrecision+1)+i+1;
indices[((ring*torusPrecision+i)*2+1)*3+0]=ring*(torusPrecision+1)+i+1;
indices[((ring*torusPrecision+i)*2+1)*3+1]=(ring+1)*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2+1)*3+2]=(ring+1)*(torusPrecision+1)+i+1;
}
}
return true;
}
bool PBUFFER::Init( int newWidth, int newHeight,
int newColorBits, int newDepthBits, int newStencilBits,
int numExtraIAttribs, int * extraIAttribList, int * flags)
{
//Check for pbuffer support
if( !WGL_ARB_extensions_string_supported ||
!WGL_ARB_pixel_format_supported ||
!WGL_ARB_pbuffer_supported)
{
errorLog.OutputError("Extension required for pbuffer unsupported");
return false;
}
//set class's member variables
width=newWidth;
height=newHeight;
colorBits=newColorBits;
depthBits=newDepthBits;
stencilBits=newStencilBits;
//Get the current device context
HDC hCurrentDC=wglGetCurrentDC();
if(!hCurrentDC)
{
errorLog.OutputError("Unable to get current Device Context");
return false;
}
//choose pixel format
GLint pixelFormat;
const int standardIAttribList[]={ WGL_DRAW_TO_PBUFFER_ARB, 1,
WGL_COLOR_BITS_ARB, colorBits,
WGL_ALPHA_BITS_ARB, colorBits==32 ? 8 : 0,
WGL_DEPTH_BITS_ARB, depthBits,
WGL_STENCIL_BITS_ARB, stencilBits};
const float fAttribList[]={
0};
//add the extraIAttribList to the standardIAttribList
int * iAttribList=new int[sizeof(standardIAttribList)/sizeof(int)+numExtraIAttribs*2+1];
if(!iAttribList)
{
errorLog.OutputError("Unable to allocate space for iAttribList");
return false;
}
memcpy( iAttribList, standardIAttribList, sizeof(standardIAttribList));
memcpy( iAttribList+sizeof(standardIAttribList)/sizeof(int),
extraIAttribList, numExtraIAttribs*2*sizeof(int)+sizeof(int));
//Choose pixel format
unsigned int numFormats;
if(!wglChoosePixelFormatARB(hCurrentDC, iAttribList, fAttribList, 1,
&pixelFormat, &numFormats))
{
errorLog.OutputError("Unable to find a pixel format for the pbuffer");
return false;
}
//Create the pbuffer
hBuffer=wglCreatePbufferARB(hCurrentDC, pixelFormat, width, height, flags);
if(!hBuffer)
{
errorLog.OutputError("Unable to create pbuffer");
return false;
}
//Get the pbuffer's device context
hDC=wglGetPbufferDCARB(hBuffer);
if(!hDC)
{
errorLog.OutputError("Unable to get pbuffer's device context");
return false;
}
//Create a rendering context for the pbuffer
hRC=wglCreateContext(hDC);
if(!hRC)
{
errorLog.OutputError("Unable to create pbuffer's rendering context");
return false;
}
//Set and output the actual pBuffer dimensions
wglQueryPbufferARB(hBuffer, WGL_PBUFFER_WIDTH_ARB, &width);
wglQueryPbufferARB(hBuffer, WGL_PBUFFER_HEIGHT_ARB, &height);
errorLog.OutputSuccess("Pbuffer Created: (%d x %d)", width, height);
return TRUE; //success!
}
//Load8BitBMP - load an 8 bit paletted bitmap file
bool IMAGE::Load8BitBMP(char * filename)
{
errorLog.OutputSuccess("Loading %s in Load8bitBMP()", filename);
//set bpp and format
bpp=24; //after conversion
format=GL_RGB;
FILE * file; //the texture file
BITMAPFILEHEADER fileHeader; //bitmap file header
BITMAPINFOHEADER infoHeader; //bitmap info header
//open file for reading
file=fopen(filename, "rb");
if(file==NULL)
{
errorLog.OutputError("Unable to open %s", filename);
return false;
}
//read the file header
fread(&fileHeader, sizeof(BITMAPFILEHEADER), 1, file);
//check it's a bitmap
if(fileHeader.bfType != BITMAP_ID)
{
fclose(file);
errorLog.OutputError("%s is not a legal .BMP", filename);
return false;
}
//read in the information header
fread(&infoHeader, sizeof(BITMAPINFOHEADER), 1, file);
//set size
width=infoHeader.biWidth;
height=infoHeader.biHeight;
//make space for palette
unsigned char * palette=new unsigned char[256*4];
if(!palette)
{
errorLog.OutputError("Unable to alllocate memory for palette");
return false;
}
//load the palette
fread(palette, 256*4, 1, file);
//point file to the beginning of the data
fseek(file, fileHeader.bfOffBits, SEEK_SET);
//calculate the stride in bytes between one row and the next
unsigned int stride=width;
if(width%4 != 0)
stride+=4-width%4;
//allocate space for color indices
unsigned char * indices=new unsigned char[stride*height];
if(!indices)
{
errorLog.OutputError("Unable to allocate memory for indices");
return false;
}
//load indices
fread(indices, 1, stride*height, file);
//close the file
fclose(file);
//allocate space for the image data
data=new unsigned char[stride*height*bpp/8];
if(!data)
{
fclose(file);
errorLog.OutputError("Unable to allocate memory for %s", filename);
return false;
}
//calculate the color values - keeping the padding colors
for(unsigned int currentRow=0; currentRow<height; currentRow++)
{
for(unsigned int i=0; i<stride; i++)
{
data[(currentRow*stride+i)*3+0]=palette[indices[currentRow*stride+i]*4+2];
data[(currentRow*stride+i)*3+1]=palette[indices[currentRow*stride+i]*4+1];
data[(currentRow*stride+i)*3+2]=palette[indices[currentRow*stride+i]*4+0];//BGR
}
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
//Tesselate a biquadratic patch
bool BSP_BIQUADRATIC_PATCH::Tesselate(int newTesselation)
{
tesselation=newTesselation;
float px, py;
BSP_VERTEX temp[3];
vertices=new BSP_VERTEX[(tesselation+1)*(tesselation+1)];
for(int v=0; v<=tesselation; ++v)
{
px=(float)v/tesselation;
vertices[v]=controlPoints[0]*((1.0f-px)*(1.0f-px))+
controlPoints[3]*((1.0f-px)*px*2)+
controlPoints[6]*(px*px);
}
for(int u=1; u<=tesselation; ++u)
{
py=(float)u/tesselation;
temp[0]=controlPoints[0]*((1.0f-py)*(1.0f-py))+
controlPoints[1]*((1.0f-py)*py*2)+
controlPoints[2]*(py*py);
temp[1]=controlPoints[3]*((1.0f-py)*(1.0f-py))+
controlPoints[4]*((1.0f-py)*py*2)+
controlPoints[5]*(py*py);
temp[2]=controlPoints[6]*((1.0f-py)*(1.0f-py))+
controlPoints[7]*((1.0f-py)*py*2)+
controlPoints[8]*(py*py);
for(int v=0; v<=tesselation; ++v)
{
px=(float)v/tesselation;
vertices[u*(tesselation+1)+v]= temp[0]*((1.0f-px)*(1.0f-px))+
temp[1]*((1.0f-px)*px*2)+
temp[2]*(px*px);
}
}
//Create indices
indices=new GLuint[tesselation*(tesselation+1)*2];
if(!indices)
{
errorLog.OutputError("Unable to allocate memory for surface indices");
return false;
}
for(int row=0; row<tesselation; ++row)
{
for(int point=0; point<=tesselation; ++point)
{
//calculate indices
//reverse them to reverse winding
indices[(row*(tesselation+1)+point)*2+1]=row*(tesselation+1)+point;
indices[(row*(tesselation+1)+point)*2]=(row+1)*(tesselation+1)+point;
}
}
//Fill in the arrays for multi_draw_arrays
trianglesPerRow=new int[tesselation];
rowIndexPointers=new unsigned int *[tesselation];
if(!trianglesPerRow || !rowIndexPointers)
{
errorLog.OutputError("Unable to allocate memory for indices for multi_draw_arrays");
return false;
}
for(int row=0; row<tesselation; ++row)
{
trianglesPerRow[row]=2*(tesselation+1);
rowIndexPointers[row]=&indices[row*2*(tesselation+1)];
}
return true;
}
bool SHADOW_MODEL::GenerateTorus(float innerRadius, float outerRadius)
{
int torusPrecision=24;
numVertices=(torusPrecision+1)*(torusPrecision+1);
numIndices=2*torusPrecision*torusPrecision*3;
numTriangles=numIndices/3;
vertices=new SHADOW_MODEL_VERTEX[numVertices];
if(!vertices)
{
errorLog.OutputError("Unable to allocate memory for torus vertices");
return false;
}
indices=new unsigned int[numIndices];
if(!indices)
{
errorLog.OutputError("Unable to allocate memory for torus indices");
return false;
}
//calculate the first ring - inner radius 4, outer radius 1.5
for(int i=0; i<torusPrecision+1; i++)
{
vertices[i].position=VECTOR3D(innerRadius, 0.0f, 0.0f).GetRotatedZ(i*360.0f/torusPrecision)+
VECTOR3D(outerRadius, 0.0f, 0.0f);
vertices[i].normal=VECTOR3D(0.0f, 0.0f, 1.0f).
CrossProduct(VECTOR3D(0.0f, -1.0f, 0.0f).GetRotatedZ(i*360.0f/torusPrecision));
}
//rotate this to get other rings
for(int ring=1; ring<torusPrecision+1; ring++)
{
for(int i=0; i<torusPrecision+1; i++)
{
vertices[ring*(torusPrecision+1)+i].position=vertices[i].position.GetRotatedY(ring*360.0f/torusPrecision);
vertices[ring*(torusPrecision+1)+i].normal=vertices[i].normal.GetRotatedY(ring*360.0f/torusPrecision);
}
}
//calculate the indices
for(int ring=0; ring<torusPrecision; ring++)
{
for(int i=0; i<torusPrecision; i++)
{
indices[((ring*torusPrecision+i)*2)*3+0]=ring*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2)*3+1]=(ring+1)*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2)*3+2]=ring*(torusPrecision+1)+i+1;
indices[((ring*torusPrecision+i)*2+1)*3+0]=ring*(torusPrecision+1)+i+1;
indices[((ring*torusPrecision+i)*2+1)*3+1]=(ring+1)*(torusPrecision+1)+i;
indices[((ring*torusPrecision+i)*2+1)*3+2]=(ring+1)*(torusPrecision+1)+i+1;
}
}
//Calculate the plane equation for each face
planeEquations=new PLANE[numTriangles];
if(!planeEquations)
{
errorLog.OutputError("Unable to allocate memory for %d planes", numTriangles);
return false;
}
for(unsigned int j=0; j<numTriangles; ++j)
{
planeEquations[j].SetFromPoints(vertices[indices[j*3+0]].position,
vertices[indices[j*3+1]].position,
vertices[indices[j*3+2]].position);
}
//Create space for the "is facing light" booleans
isFacingLight=new bool[numTriangles];
if(!isFacingLight)
{
errorLog.OutputError("Unable to allocate memory for %d booleans", numTriangles);
return false;
}
//Create space for connectivity data
neighbourIndices=new GLint[numTriangles*3];
if(!neighbourIndices)
{
errorLog.OutputError("Unable to allocate memory for %d neighbour indices", numTriangles*3);
return false;
}
//Create space for "is silhouette edge" booleans
isSilhouetteEdge=new bool[numTriangles*3];
if(!isSilhouetteEdge)
{
errorLog.OutputError("Unable to allocate memory for %d booleans", numTriangles*3);
return false;
}
//Calculate the neighbours
SetConnectivity();
return true;
}
///////////////////BSP::LoadLightmaps///////
////////////////////////////////////////////
bool BSP::LoadLightmaps(FILE * file)
{
//Calculate number of lightmaps
numLightmaps=header.directoryEntries[bspLightmaps].length/sizeof(BSP_LOAD_LIGHTMAP);
//Create space for this many BSP_LOAD_LIGHTMAPs
BSP_LOAD_LIGHTMAP * loadLightmaps=new BSP_LOAD_LIGHTMAP[numLightmaps];
if(!loadLightmaps)
{
errorLog.OutputError("Unable to allocate space for %d BSP_LOAD_LIGHTMAPs", numLightmaps);
return false;
}
//Load textures
fseek(file, header.directoryEntries[bspLightmaps].offset, SEEK_SET);
fread(loadLightmaps, 1, header.directoryEntries[bspLightmaps].length, file);
//Create storage space for that many texture identifiers
lightmapTextures=new GLuint[numLightmaps];
if(!lightmapTextures)
{
errorLog.OutputError("Unable to create storage space for %d texture IDs", numLightmaps);
return false;
}
//Generate the texture identifiers
glGenTextures(numLightmaps, lightmapTextures);
//Change the gamma settings on the lightmaps (make them brighter)
float gamma=2.5f;
for(int i=0; i<numLightmaps; ++i)
{
for(int j=0; j<128*128; ++j)
{
float r, g, b;
r=loadLightmaps[i].lightmapData[j*3+0];
g=loadLightmaps[i].lightmapData[j*3+1];
b=loadLightmaps[i].lightmapData[j*3+2];
r*=gamma/255.0f;
g*=gamma/255.0f;
b*=gamma/255.0f;
//find the value to scale back up
float scale=1.0f;
float temp;
if(r > 1.0f && (temp = (1.0f/r)) < scale) scale=temp;
if(g > 1.0f && (temp = (1.0f/g)) < scale) scale=temp;
if(b > 1.0f && (temp = (1.0f/b)) < scale) scale=temp;
// scale up color values
scale*=255.0f;
r*=scale;
g*=scale;
b*=scale;
//fill data back in
loadLightmaps[i].lightmapData[j*3+0]=(GLubyte)r;
loadLightmaps[i].lightmapData[j*3+1]=(GLubyte)g;
loadLightmaps[i].lightmapData[j*3+2]=(GLubyte)b;
}
}
for(int i=0; i<numLightmaps; ++i)
{
glBindTexture(GL_TEXTURE_2D, lightmapTextures[i]);
//Create texture
gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGBA8, 128, 128,
GL_RGB, GL_UNSIGNED_BYTE, loadLightmaps[i].lightmapData);
//Set Parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
//Create white texture for if no lightmap specified
glGenTextures(1, &whiteTexture);
glBindTexture(GL_TEXTURE_2D, whiteTexture);
//Create texture
gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGBA8, 1, 1,
GL_RGB, GL_FLOAT, white);
//Set Parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
if(loadLightmaps)
delete [] loadLightmaps;
loadLightmaps=NULL;
return true;
}
///////////////////BSP::LoadTextures////////
////////////////////////////////////////////
bool BSP::LoadTextures(FILE * file)
{
//Calculate number of textures
numTextures=header.directoryEntries[bspTextures].length/sizeof(BSP_LOAD_TEXTURE);
//Create space for this many BSP_LOAD_TEXTUREs
BSP_LOAD_TEXTURE * loadTextures=new BSP_LOAD_TEXTURE[numTextures];
if(!loadTextures)
{
errorLog.OutputError("Unable to allocate space for %d BSP_LOAD_TEXTUREs", numTextures);
return false;
}
//Load textures
fseek(file, header.directoryEntries[bspTextures].offset, SEEK_SET);
fread(loadTextures, 1, header.directoryEntries[bspTextures].length, file);
//Create storage space for that many texture identifiers
decalTextures=new GLuint[numTextures];
if(!decalTextures)
{
errorLog.OutputError("Unable to create storage space for %d texture IDs", numTextures);
return false;
}
//Create storage space for that many booleans to tell if texture has loaded
isTextureLoaded=new bool[numTextures];
if(!isTextureLoaded)
{
errorLog.OutputError("Unable to create storage space for %d booleans", numTextures);
return false;
}
//Generate the texture identifiers
glGenTextures(numTextures, decalTextures);
//Loop through and create textures
IMAGE textureImage; //Image used to load textures
for(int i=0; i<numTextures; ++i)
{
glBindTexture(GL_TEXTURE_2D, decalTextures[i]);
//add file extension to the name
char tgaExtendedName[68];
char jpgExtendedName[68];
strcpy(tgaExtendedName, loadTextures[i].name);
strcat(tgaExtendedName, ".tga");
strcpy(jpgExtendedName, loadTextures[i].name);
strcat(jpgExtendedName, ".jpg");
//Load texture image
bool isJpgTexture=false; //have we loaded a jpg?
if(!textureImage.Load(tgaExtendedName)) //try to load .tga, if not
{
if(LoadJPG(&textureImage, jpgExtendedName)) //try to load jpg
{
isJpgTexture=true;
isTextureLoaded[i]=true;
}
else
isTextureLoaded[i]=false;
}
else
isTextureLoaded[i]=true;
//if a jpg texture, need to set UNPACK_ALIGNMENT to 1
if(isJpgTexture)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
//Create texture
gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGBA8, textureImage.width, textureImage.height,
textureImage.format, GL_UNSIGNED_BYTE, textureImage.data);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
//Set Parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
if(loadTextures)
delete [] loadTextures;
loadTextures=NULL;
return true;
}
//Load24BitBMP - load a 24 bit bitmap file
bool IMAGE::Load24BitBMP(char * filename)
{
errorLog.OutputSuccess("Loading %s in Load24bitBMP()", filename);
//set bpp and format
bpp=24;
format=GL_RGB;
FILE * file; //the texture file
BITMAPFILEHEADER fileHeader; //bitmap file header
BITMAPINFOHEADER infoHeader; //bitmap info header
//open file for reading
file=fopen(filename, "rb");
if(file==NULL)
{
errorLog.OutputError("Unable to open %s", filename);
return false;
}
//read the file header
fread(&fileHeader, sizeof(BITMAPFILEHEADER), 1, file);
//check it's a bitmap
if(fileHeader.bfType != BITMAP_ID)
{
fclose(file);
errorLog.OutputError("%s is not a legal .BMP", filename);
return false;
}
//read in the information header
fread(&infoHeader, sizeof(BITMAPINFOHEADER), 1, file);
//set size
width=infoHeader.biWidth;
height=infoHeader.biHeight;
//calculate the stride in bytes: width*bpp/8 plus padding bytes at the end of each row
unsigned int stride=width*bpp/8;
if(width%4==1)
stride+=1;
if(width%4==2)
stride+=2;
if(width%4==3)
stride+=3;
//point file to the beginning of the data
fseek(file, fileHeader.bfOffBits, SEEK_SET);
//allocate space for the image data
data=new unsigned char[stride*height];
if(!data)
{
fclose(file);
errorLog.OutputError("Unable to allocate memory for %s", filename);
return false;
}
//read in the data
fread(data, 1, stride*height, file);
//close the file
fclose(file);
//data is in BGR format
//swap b and r
for(unsigned int row=0; row<height; row++)
{
for(unsigned int i=0; i<width*3; i+=bpp/8)
{
//repeated XOR to swap bytes 0 and 2
data[(row*stride)+i] ^= data[(row*stride)+i+2] ^=
data[(row*stride)+i] ^= data[(row*stride)+i+2];
}
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
//LoadPCX - load a .pcx texture - 256 color, paletted
bool IMAGE::LoadPCX(char * filename)
{
errorLog.OutputSuccess("Loading %s in LoadPCX()", filename);
//set bpp and format
bpp=24;
format=GL_RGB;
FILE * file;
file=fopen(filename, "rb");
if(!file)
{
errorLog.OutputError("Unable to open %s", filename);
return false;
}
//retrieve header, first 4 bytes, first 2 should be 0x0A0C
unsigned short header[2];
fread(header, 4, 1, file);
if(header[0]!=0x050A)
{
errorLog.OutputError("%s is not a legal .PCX file", filename);
fclose(file);
return false;
}
//retrieve minimum x value
int xMin=fgetc(file); //loword
xMin |= fgetc(file) << 8; //hiword
//retrieve minimum y value
int yMin=fgetc(file); //loword
yMin |= fgetc(file) << 8; //hiword
//retrieve maximum x value
int xMax=fgetc(file); //loword
xMax |= fgetc(file) << 8; //hiword
//retrieve maximum y value
int yMax=fgetc(file); //loword
yMax |= fgetc(file) << 8; //hiword
//calculate width and height
width = xMax-xMin+1;
height= yMax-yMin+1;
//allocate memory for pixel data (paletted)
unsigned char * pixelData=new unsigned char[width*height];
if(!pixelData)
{
errorLog.OutputError("Unable to allocate %d bytes for the image data of %s",
width*height, filename);
fclose(file);
return false;
}
//set file pointer to beginning of image data
fseek(file, 128, SEEK_SET);
//decode and store the pixel data
unsigned int index=0;
while(index<(width*height))
{
int c = getc(file);
if(c>0xBF)
{
int numRepeat = 0x3F & c;
c=getc(file);
for(int i=0; i<numRepeat; i++)
pixelData[index++] = c;
}
else
pixelData[index++] = c;
fflush(stdout);
}
//allocate memory for the image palette
unsigned char * paletteData = new unsigned char[768];
//the palette is the last 769 bytes of the file
fseek(file, -769, SEEK_END);
//retrieve first character, should be equal to 12
int c=getc(file);
if(c!=12)
{
errorLog.OutputError("%s is not a legal .PCX file - the palette data has an illegal header, %d",
filename, c);
fclose(file);
return false;
}
//read and store the palette
fread(paletteData, 1, 768, file);
//close the file
fclose(file);
//allocate memory for the "unpaletted" data
data = new unsigned char[width*height*3];
if(!data)
{
errorLog.OutputError("Unable to allocate memory for the expanded data of %s", filename);
return false;
}
//calculate the "unpaletted" data - "flipping" the texture top-bottom
for(unsigned int j=0; j<height; j++)
{
for(unsigned int i=0; i<width; i++)
{
data[3*(j*width+i)] = (unsigned char) paletteData[3*pixelData[(height-1-j)*width+i]];
data[3*(j*width+i)+1] = (unsigned char) paletteData[3*pixelData[(height-1-j)*width+i]+1];
data[3*(j*width+i)+2] = (unsigned char) paletteData[3*pixelData[(height-1-j)*width+i]+2];
}
}
errorLog.OutputSuccess("Loaded %s correctly.", filename);
return true;
}
bool SetUpNV_vertex_program()
{
//Check for support
char * extensionString=(char *)glGetString(GL_EXTENSIONS);
char * extensionName="GL_NV_vertex_program";
char * endOfString; //store pointer to end of string
unsigned int distanceToSpace; //distance to next space
endOfString=extensionString+strlen(extensionString);
//loop through string
while(extensionString<endOfString)
{
//find distance to next space
distanceToSpace=strcspn(extensionString, " ");
//see if we have found extensionName
if((strlen(extensionName)==distanceToSpace) &&
(strncmp(extensionName, extensionString, distanceToSpace)==0))
{
NV_vertex_program_supported=true;
}
//if not, move on
extensionString+=distanceToSpace+1;
}
if(!NV_vertex_program_supported)
{
errorLog.OutputError("NV_vertex_program unsupported!");
return false;
}
errorLog.OutputSuccess("NV_vertex_program supported!");
//get function pointers
glBindProgramNV = (PFNGLBINDPROGRAMNVPROC)
wglGetProcAddress("glBindProgramNV");
glDeleteProgramsNV = (PFNGLDELETEPROGRAMSNVPROC)
wglGetProcAddress("glDeleteProgramsNV");
glExecuteProgramNV = (PFNGLEXECUTEPROGRAMNVPROC)
wglGetProcAddress("glExecuteProgramNV");
glGenProgramsNV = (PFNGLGENPROGRAMSNVPROC)
wglGetProcAddress("glGenProgramsNV");
glAreProgramsResidentNV = (PFNGLAREPROGRAMSRESIDENTNVPROC)
wglGetProcAddress("glAreProgramsResidentNV");
glRequestResidentProgramsNV = (PFNGLREQUESTRESIDENTPROGRAMSNVPROC)
wglGetProcAddress("glRequestResidentProgramsNV");
glGetProgramParameterfvNV = (PFNGLGETPROGRAMPARAMETERFVNVPROC)
wglGetProcAddress("glGetProgramParameterfvNV");
glGetProgramParameterdvNV = (PFNGLGETPROGRAMPARAMETERDVNVPROC)
wglGetProcAddress("glGetProgramParameterdvNV");
glGetProgramivNV = (PFNGLGETPROGRAMIVNVPROC)
wglGetProcAddress("glGetProgramivNV");
glGetProgramStringNV = (PFNGLGETPROGRAMSTRINGNVPROC)
wglGetProcAddress("glGetProgramStringNV");
glGetTrackMatrixivNV = (PFNGLGETTRACKMATRIXIVNVPROC)
wglGetProcAddress("glGetTrackMatrixivNV");
glGetVertexAttribdvNV = (PFNGLGETVERTEXATTRIBDVNVPROC)
wglGetProcAddress("glGetVertexAttribdvNV");
glGetVertexAttribfvNV = (PFNGLGETVERTEXATTRIBFVNVPROC)
wglGetProcAddress("glGetVertexAttribfvNV");
glGetVertexAttribivNV = (PFNGLGETVERTEXATTRIBIVNVPROC)
wglGetProcAddress("glGetVertexAttribivNV");
glGetVertexAttribPointervNV = (PFNGLGETVERTEXATTRIBPOINTERVNVPROC)
wglGetProcAddress("glGetVertexAttribPointervNV");
glIsProgramNV = (PFNGLISPROGRAMNVPROC)
wglGetProcAddress("glIsProgramNV");
glLoadProgramNV = (PFNGLLOADPROGRAMNVPROC)
wglGetProcAddress("glLoadProgramNV");
glProgramParameter4fNV = (PFNGLPROGRAMPARAMETER4FNVPROC)
wglGetProcAddress("glProgramParameter4fNV");
glProgramParameter4dNV = (PFNGLPROGRAMPARAMETER4DNVPROC)
wglGetProcAddress("glProgramParameter4dNV");
glProgramParameter4fvNV = (PFNGLPROGRAMPARAMETER4FVNVPROC)
wglGetProcAddress("glProgramParameter4fvNV");
glProgramParameter4dvNV = (PFNGLPROGRAMPARAMETER4DVNVPROC)
wglGetProcAddress("glProgramParameter4dvNV");
glProgramParameters4fvNV = (PFNGLPROGRAMPARAMETERS4FVNVPROC)
wglGetProcAddress("glProgramParameters4fvNV");
glProgramParameters4dvNV = (PFNGLPROGRAMPARAMETERS4DVNVPROC)
wglGetProcAddress("glProgramParameters4dvNV");
glTrackMatrixNV = (PFNGLTRACKMATRIXNVPROC)
wglGetProcAddress("glTrackMatrixNV");
glVertexAttribPointerNV = (PFNGLVERTEXATTRIBPOINTERNVPROC)
wglGetProcAddress("glVertexAttribPointerNV");
glVertexAttrib1sNV = (PFNGLVERTEXATTRIB1SNVPROC)
wglGetProcAddress("glVertexAttrib1sNV");
glVertexAttrib1fNV = (PFNGLVERTEXATTRIB1FNVPROC)
wglGetProcAddress("glVertexAttrib1fNV");
glVertexAttrib1dNV = (PFNGLVERTEXATTRIB1DNVPROC)
wglGetProcAddress("glVertexAttrib1dNV");
glVertexAttrib2sNV = (PFNGLVERTEXATTRIB2SNVPROC)
wglGetProcAddress("glVertexAttrib2sNV");
glVertexAttrib2fNV = (PFNGLVERTEXATTRIB2FNVPROC)
wglGetProcAddress("glVertexAttrib2fNV");
glVertexAttrib2dNV = (PFNGLVERTEXATTRIB2DNVPROC)
wglGetProcAddress("glVertexAttrib2dNV");
glVertexAttrib3sNV = (PFNGLVERTEXATTRIB3SNVPROC)
wglGetProcAddress("glVertexAttrib3sNV");
glVertexAttrib3fNV = (PFNGLVERTEXATTRIB3FNVPROC)
wglGetProcAddress("glVertexAttrib3fNV");
glVertexAttrib3dNV = (PFNGLVERTEXATTRIB3DNVPROC)
wglGetProcAddress("glVertexAttrib3dNV");
glVertexAttrib4sNV = (PFNGLVERTEXATTRIB4SNVPROC)
wglGetProcAddress("glVertexAttrib4sNV");
glVertexAttrib4fNV = (PFNGLVERTEXATTRIB4FNVPROC)
wglGetProcAddress("glVertexAttrib4fNV");
glVertexAttrib4dNV = (PFNGLVERTEXATTRIB4DNVPROC)
wglGetProcAddress("glVertexAttrib4dNV");
glVertexAttrib4ubNV = (PFNGLVERTEXATTRIB4UBNVPROC)
wglGetProcAddress("glVertexAttrib4ubNV");
glVertexAttrib1svNV = (PFNGLVERTEXATTRIB1SVNVPROC)
wglGetProcAddress("glVertexAttrib1svNV");
glVertexAttrib1fvNV = (PFNGLVERTEXATTRIB1FVNVPROC)
wglGetProcAddress("glVertexAttrib1fvNV");
glVertexAttrib1dvNV = (PFNGLVERTEXATTRIB1DVNVPROC)
wglGetProcAddress("glVertexAttrib1dvNV");
glVertexAttrib2svNV = (PFNGLVERTEXATTRIB2SVNVPROC)
wglGetProcAddress("glVertexAttrib2svNV");
glVertexAttrib2fvNV = (PFNGLVERTEXATTRIB2FVNVPROC)
wglGetProcAddress("glVertexAttrib2fvNV");
glVertexAttrib2dvNV = (PFNGLVERTEXATTRIB2DVNVPROC)
wglGetProcAddress("glVertexAttrib2dvNV");
glVertexAttrib3svNV = (PFNGLVERTEXATTRIB3SVNVPROC)
wglGetProcAddress("glVertexAttrib3svNV");
glVertexAttrib3fvNV = (PFNGLVERTEXATTRIB3FVNVPROC)
wglGetProcAddress("glVertexAttrib3fvNV");
glVertexAttrib3dvNV = (PFNGLVERTEXATTRIB3DVNVPROC)
wglGetProcAddress("glVertexAttrib3dvNV");
glVertexAttrib4svNV = (PFNGLVERTEXATTRIB4SVNVPROC)
wglGetProcAddress("glVertexAttrib4svNV");
glVertexAttrib4fvNV = (PFNGLVERTEXATTRIB4FVNVPROC)
wglGetProcAddress("glVertexAttrib4fvNV");
glVertexAttrib4dvNV = (PFNGLVERTEXATTRIB4DVNVPROC)
wglGetProcAddress("glVertexAttrib4dvNV");
glVertexAttrib4ubvNV = (PFNGLVERTEXATTRIB4UBVNVPROC)
wglGetProcAddress("glVertexAttrib4ubvNV");
glVertexAttribs1svNV = (PFNGLVERTEXATTRIBS1SVNVPROC)
wglGetProcAddress("glVertexAttribs1svNV");
glVertexAttribs1fvNV = (PFNGLVERTEXATTRIBS1FVNVPROC)
wglGetProcAddress("glVertexAttribs1fvNV");
glVertexAttribs1dvNV = (PFNGLVERTEXATTRIBS1DVNVPROC)
wglGetProcAddress("glVertexAttribs1dvNV");
glVertexAttribs2svNV = (PFNGLVERTEXATTRIBS2SVNVPROC)
wglGetProcAddress("glVertexAttribs2svNV");
glVertexAttribs2fvNV = (PFNGLVERTEXATTRIBS2FVNVPROC)
wglGetProcAddress("glVertexAttribs2fvNV");
glVertexAttribs2dvNV = (PFNGLVERTEXATTRIBS2DVNVPROC)
wglGetProcAddress("glVertexAttribs2dvNV");
glVertexAttribs3svNV = (PFNGLVERTEXATTRIBS3SVNVPROC)
wglGetProcAddress("glVertexAttribs3svNV");
glVertexAttribs3fvNV = (PFNGLVERTEXATTRIBS3FVNVPROC)
wglGetProcAddress("glVertexAttribs3fvNV");
glVertexAttribs3dvNV = (PFNGLVERTEXATTRIBS3DVNVPROC)
wglGetProcAddress("glVertexAttribs3dvNV");
glVertexAttribs4svNV = (PFNGLVERTEXATTRIBS4SVNVPROC)
wglGetProcAddress("glVertexAttribs4svNV");
glVertexAttribs4fvNV = (PFNGLVERTEXATTRIBS4FVNVPROC)
wglGetProcAddress("glVertexAttribs4fvNV");
glVertexAttribs4dvNV = (PFNGLVERTEXATTRIBS4DVNVPROC)
wglGetProcAddress("glVertexAttribs4dvNV");
glVertexAttribs4ubvNV = (PFNGLVERTEXATTRIBS4UBVNVPROC)
wglGetProcAddress("glVertexAttribs4ubvNV");
return true;
}
///////////////////BSP::LoadBSPData/////////
////////////////////////////////////////////
bool BSP::LoadBSPData(FILE * file)
{
//Load leaves
//Calculate number of leaves
numLeaves=header.directoryEntries[bspLeaves].length/sizeof(BSP_LOAD_LEAF);
//Create space for this many BSP_LOAD_LEAFS
BSP_LOAD_LEAF * loadLeaves=new BSP_LOAD_LEAF[numLeaves];
if(!loadLeaves)
{
errorLog.OutputError("Unable to allocate space for %d BSP_LOAD_LEAFs", numLeaves);
return false;
}
//Create space for this many BSP_LEAFs
leaves=new BSP_LEAF[numLeaves];
if(!leaves)
{
errorLog.OutputError("Unable to allocate space for %d BSP_LEAFs", numLeaves);
return false;
}
//Load leaves
fseek(file, header.directoryEntries[bspLeaves].offset, SEEK_SET);
fread(loadLeaves, 1, header.directoryEntries[bspLeaves].length, file);
//Convert the load leaves to leaves
for(int i=0; i<numLeaves; ++i)
{
leaves[i].cluster=loadLeaves[i].cluster;
leaves[i].firstLeafFace=loadLeaves[i].firstLeafFace;
leaves[i].numFaces=loadLeaves[i].numFaces;
//Create the bounding box
leaves[i].boundingBoxVertices[0].Set((float)loadLeaves[i].mins[0], (float)loadLeaves[i].mins[2],-(float)loadLeaves[i].mins[1]);
leaves[i].boundingBoxVertices[1].Set((float)loadLeaves[i].mins[0], (float)loadLeaves[i].mins[2],-(float)loadLeaves[i].maxs[1]);
leaves[i].boundingBoxVertices[2].Set((float)loadLeaves[i].mins[0], (float)loadLeaves[i].maxs[2],-(float)loadLeaves[i].mins[1]);
leaves[i].boundingBoxVertices[3].Set((float)loadLeaves[i].mins[0], (float)loadLeaves[i].maxs[2],-(float)loadLeaves[i].maxs[1]);
leaves[i].boundingBoxVertices[4].Set((float)loadLeaves[i].maxs[0], (float)loadLeaves[i].mins[2],-(float)loadLeaves[i].mins[1]);
leaves[i].boundingBoxVertices[5].Set((float)loadLeaves[i].maxs[0], (float)loadLeaves[i].mins[2],-(float)loadLeaves[i].maxs[1]);
leaves[i].boundingBoxVertices[6].Set((float)loadLeaves[i].maxs[0], (float)loadLeaves[i].maxs[2],-(float)loadLeaves[i].mins[1]);
leaves[i].boundingBoxVertices[7].Set((float)loadLeaves[i].maxs[0], (float)loadLeaves[i].maxs[2],-(float)loadLeaves[i].maxs[1]);
for(int j=0; j<8; ++j)
leaves[i].boundingBoxVertices[j]/=64;
}
//Load leaf faces array
int numLeafFaces=header.directoryEntries[bspLeafFaces].length/sizeof(int);
//Create space for this many leaf faces
leafFaces=new int[numLeafFaces];
if(!leafFaces)
{
errorLog.OutputError("Unable to allocate space for %d leaf faces", numLeafFaces);
return false;
}
//Load leaf faces
fseek(file, header.directoryEntries[bspLeafFaces].offset, SEEK_SET);
fread(leafFaces, 1, header.directoryEntries[bspLeafFaces].length, file);
//Load Planes
numPlanes=header.directoryEntries[bspPlanes].length/sizeof(PLANE);
//Create space for this many planes
planes=new PLANE[numPlanes];
if(!planes)
{
errorLog.OutputError("Unable to allocate space for %d planes", numPlanes);
return false;
}
fseek(file, header.directoryEntries[bspPlanes].offset, SEEK_SET);
fread(planes, 1, header.directoryEntries[bspPlanes].length, file);
//reverse the intercept on the planes and convert planes to OGL coordinates
for(int i=0; i<numPlanes; ++i)
{
//swap y and z and negate z
float temp=planes[i].normal.y;
planes[i].normal.y=planes[i].normal.z;
planes[i].normal.z=-temp;
planes[i].intercept=-planes[i].intercept;
planes[i].intercept/=64; //scale down
}
//Load nodes
numNodes=header.directoryEntries[bspNodes].length/sizeof(BSP_NODE);
//Create space for this many nodes
nodes=new BSP_NODE[numNodes];
if(!nodes)
{
errorLog.OutputError("Unable to allocate space for %d nodes", numNodes);
return false;
}
fseek(file, header.directoryEntries[bspNodes].offset, SEEK_SET);
fread(nodes, 1, header.directoryEntries[bspNodes].length, file);
//Load visibility data
//load numClusters and bytesPerCluster
fseek(file, header.directoryEntries[bspVisData].offset, SEEK_SET);
fread(&visibilityData, 2, sizeof(int), file);
//Calculate the size of the bitset
int bitsetSize=visibilityData.numClusters*visibilityData.bytesPerCluster;
//Create space for bitset
visibilityData.bitset=new GLubyte[bitsetSize];
if(!visibilityData.bitset)
{
errorLog.OutputError( "Unable to allocate memory for visibility bitset of size %d bytes",
bitsetSize);
return false;
}
//read bitset
fread(visibilityData.bitset, 1, bitsetSize, file);
if(loadLeaves)
delete [] loadLeaves;
loadLeaves=NULL;
return true;
}
///////////////////BSP::LoadFaces///////////
////////////////////////////////////////////
bool BSP::LoadFaces(FILE * file, int curveTesselation)
{
//calculate number of load faces
numTotalFaces=header.directoryEntries[bspFaces].length/sizeof(BSP_LOAD_FACE);
//Create space for this many BSP_LOAD_FACES
BSP_LOAD_FACE * loadFaces=new BSP_LOAD_FACE[numTotalFaces];
if(!loadFaces)
{
errorLog.OutputError("Unable to allocate memory for %d BSP_LOAD_FACEs", numTotalFaces);
return false;
}
//go to faces in file
fseek(file, header.directoryEntries[bspFaces].offset, SEEK_SET);
//read in the faces
fread(loadFaces, header.directoryEntries[bspFaces].length, 1, file);
//Create space for face directory
faceDirectory=new BSP_FACE_DIRECTORY_ENTRY[numTotalFaces];
if(!faceDirectory)
{
errorLog.OutputError( "Unable to allocate space for face directory with %d entries",
numTotalFaces);
return false;
}
//Clear the face directory
memset(faceDirectory, 0, numTotalFaces*sizeof(BSP_FACE_DIRECTORY_ENTRY));
//Init the "faces drawn" bitset
facesToDraw.Init(numTotalFaces);
//Calculate how many of each face type there is
for(int i=0; i<numTotalFaces; ++i)
{
if(loadFaces[i].type==bspPolygonFace)
++numPolygonFaces;
if(loadFaces[i].type==bspPatch)
++numPatches;
if(loadFaces[i].type==bspMeshFace)
++numMeshFaces;
}
//Create space for BSP_POLYGON_FACEs
polygonFaces=new BSP_POLYGON_FACE[numPolygonFaces];
if(!polygonFaces)
{
errorLog.OutputError("Unable To Allocate memory for BSP_POLYGON_FACEs");
return false;
}
int currentFace=0;
//convert loadFaces to polygonFaces
for(int i=0; i<numTotalFaces; ++i)
{
if(loadFaces[i].type!=bspPolygonFace) //skip this loadFace if it is not a polygon face
continue;
polygonFaces[currentFace].firstVertexIndex=loadFaces[i].firstVertexIndex;
polygonFaces[currentFace].numVertices=loadFaces[i].numVertices;
polygonFaces[currentFace].textureIndex=loadFaces[i].texture;
polygonFaces[currentFace].lightmapIndex=loadFaces[i].lightmapIndex;
//fill in this entry on the face directory
faceDirectory[i].faceType=bspPolygonFace;
faceDirectory[i].typeFaceNumber=currentFace;
++currentFace;
}
//Create space for BSP_MESH_FACEs
meshFaces=new BSP_MESH_FACE[numMeshFaces];
if(!meshFaces)
{
errorLog.OutputError("Unable To Allocate memory for BSP_MESH_FACEs");
return false;
}
int currentMeshFace=0;
//convert loadFaces to faces
for(int i=0; i<numTotalFaces; ++i)
{
if(loadFaces[i].type!=bspMeshFace) //skip this loadFace if it is not a mesh face
continue;
meshFaces[currentMeshFace].firstVertexIndex=loadFaces[i].firstVertexIndex;
meshFaces[currentMeshFace].numVertices=loadFaces[i].numVertices;
meshFaces[currentMeshFace].textureIndex=loadFaces[i].texture;
meshFaces[currentMeshFace].lightmapIndex=loadFaces[i].lightmapIndex;
meshFaces[currentMeshFace].firstMeshIndex=loadFaces[i].firstMeshIndex;
meshFaces[currentMeshFace].numMeshIndices=loadFaces[i].numMeshIndices;
//fill in this entry on the face directory
faceDirectory[i].faceType=bspMeshFace;
faceDirectory[i].typeFaceNumber=currentMeshFace;
++currentMeshFace;
}
//Create space for BSP_PATCHes
patches=new BSP_PATCH[numPatches];
if(!patches)
{
errorLog.OutputError("Unable To Allocate memory for BSP_PATCHes");
return false;
}
int currentPatch=0;
//convert loadFaces to patches
for(int i=0; i<numTotalFaces; ++i)
{
if(loadFaces[i].type!=bspPatch) //skip this loadFace if it is not a patch
continue;
patches[currentPatch].textureIndex=loadFaces[i].texture;
patches[currentPatch].lightmapIndex=loadFaces[i].lightmapIndex;
patches[currentPatch].width=loadFaces[i].patchSize[0];
patches[currentPatch].height=loadFaces[i].patchSize[1];
//fill in this entry on the face directory
faceDirectory[i].faceType=bspPatch;
faceDirectory[i].typeFaceNumber=currentPatch;
//Create space to hold quadratic patches
int numPatchesWide=(patches[currentPatch].width-1)/2;
int numPatchesHigh=(patches[currentPatch].height-1)/2;
patches[currentPatch].numQuadraticPatches= numPatchesWide*numPatchesHigh;
patches[currentPatch].quadraticPatches=new BSP_BIQUADRATIC_PATCH
[patches[currentPatch].numQuadraticPatches];
if(!patches[currentPatch].quadraticPatches)
{
errorLog.OutputError( "Unable to allocate memory for %d quadratic patches",
patches[currentPatch].numQuadraticPatches);
return false;
}
//fill in the quadratic patches
for(int y=0; y<numPatchesHigh; ++y)
{
for(int x=0; x<numPatchesWide; ++x)
{
for(int row=0; row<3; ++row)
{
for(int point=0; point<3; ++point)
{
patches[currentPatch].quadraticPatches[y*numPatchesWide+x].
controlPoints[row*3+point]=vertices[loadFaces[i].firstVertexIndex+
(y*2*patches[currentPatch].width+x*2)+
row*patches[currentPatch].width+point];
}
}
//tesselate the patch
patches[currentPatch].quadraticPatches[y*numPatchesWide+x].Tesselate(curveTesselation);
}
}
++currentPatch;
}
if(loadFaces)
delete [] loadFaces;
loadFaces=NULL;
return true;
}