/**
* Allocates enough RAM to hold the global Glitter variables.
*/
void RegisterGlobals(int num) {
if (pGlobals == NULL) {
numGlobals = num;
hMasterScript = !TinselV2 ? 0 :
READ_LE_UINT32(FindChunk(MASTER_SCNHANDLE, CHUNK_MASTER_SCRIPT));
// Allocate RAM for pGlobals and make sure it's allocated
pGlobals = (int32 *)calloc(numGlobals, sizeof(int32));
if (pGlobals == NULL) {
error("Cannot allocate memory for global data");
}
// Allocate RAM for interpret contexts and make sure it's allocated
icList = (INT_CONTEXT *)calloc(NUM_INTERPRET, sizeof(INT_CONTEXT));
if (icList == NULL) {
error("Cannot allocate memory for interpret contexts");
}
g_scheduler->setResourceCallback(FreeInterpretContextPr);
} else {
// Check size is still the same
assert(numGlobals == num);
memset(pGlobals, 0, numGlobals * sizeof(int32));
memset(icList, 0, NUM_INTERPRET * sizeof(INT_CONTEXT));
}
if (TinselV2) {
// read initial values
CdCD(nullContext);
Common::File f;
if (!f.open(GLOBALS_FILENAME))
error(CANNOT_FIND_FILE, GLOBALS_FILENAME);
int32 length = f.readSint32LE();
if (length != num)
error(FILE_IS_CORRUPT, GLOBALS_FILENAME);
for (int i = 0; i < length; ++i)
pGlobals[i] = f.readSint32LE();
if (f.eos() || f.err())
error(FILE_IS_CORRUPT, GLOBALS_FILENAME);
f.close();
}
}
ChunkBlock GhostRoom::readChunkBlock(Common::File &file) {
ChunkBlock cb;
cb._flavour = (Flavour)file.readByte();
cb._x = file.readSint16LE();
cb._y = file.readSint16LE();
cb._width = file.readSint16LE();
cb._height = file.readSint16LE();
cb._size = file.readSint32LE();
return cb;
}
void Background::loadSprites(byte number) {
Common::File f;
_filename = _filename.format("chunk%d.avd", number);
if (!f.open(_filename))
return; // We skip because some rooms don't have sprites in the background.
f.seek(44);
_spriteNum = f.readByte();
for (int i = 0; i < _spriteNum; i++)
_offsets[i] = f.readSint32LE();
for (int i = 0; i < _spriteNum; i++) {
f.seek(_offsets[i]);
SpriteType sprite;
sprite._type = (PictureType)(f.readByte());
sprite._x = f.readSint16LE();
sprite._y = f.readSint16LE();
sprite._width = f.readSint16LE();
sprite._height = f.readSint16LE();
sprite._size = f.readSint32LE();
bool natural = f.readByte();
bool memorize = f.readByte();
if (memorize) {
_sprites[i]._x = sprite._x;
_sprites[i]._width = sprite._width;
_sprites[i]._y = sprite._y;
_sprites[i]._height = sprite._height;
_sprites[i]._type = sprite._type;
if (natural)
_vm->_graphics->getNaturalPicture(_sprites[i]);
else {
_sprites[i]._size = sprite._size;
_sprites[i]._picture = _vm->_graphics->loadPictureRaw(f, _sprites[i]._width * 8, _sprites[i]._height + 1);
}
} else
_sprites[i]._x = kOnDisk;
}
f.close();
}
/**
* Draw background animation
* @remarks Originally called 'show_one'
*/
void Background::draw(int16 destX, int16 destY, byte sprId) {
assert(sprId < 40);
if (_sprites[sprId]._x > kOnDisk) {
if (destX < 0) {
destX = _sprites[sprId]._x * 8;
destY = _sprites[sprId]._y;
}
drawSprite(destX, destY, _sprites[sprId]);
} else {
Common::File f;
if (!f.open(_filename)) // Filename was set in loadBackgroundSprites().
return; // We skip because some rooms don't have sprites in the background.
f.seek(_offsets[sprId]);
SpriteType sprite;
sprite._type = (PictureType)(f.readByte());
sprite._x = f.readSint16LE();
sprite._y = f.readSint16LE();
sprite._width = f.readSint16LE();
sprite._height = f.readSint16LE();
sprite._size = f.readSint32LE();
f.skip(2); // Natural and Memorize are used in Load()
sprite._picture = _vm->_graphics->loadPictureRaw(f, sprite._width * 8, sprite._height + 1);
if (destX < 0) {
destX = sprite._x * 8;
destY = sprite._y;
}
drawSprite(destX, destY, sprite);
sprite._picture.free();
f.close();
}
}
void RenderManager::readImageToSurface(const Common::String &fileName, Graphics::Surface &destination, bool transposed) {
Common::File file;
if (!_engine->getSearchManager()->openFile(file, fileName)) {
warning("Could not open file %s", fileName.c_str());
return;
}
// Read the magic number
// Some files are true TGA, while others are TGZ
uint32 fileType = file.readUint32BE();
uint32 imageWidth;
uint32 imageHeight;
Image::TGADecoder tga;
uint16 *buffer;
// All ZVision images are in RGB 555
destination.format = _engine->_resourcePixelFormat;
bool isTGZ;
// Check for TGZ files
if (fileType == MKTAG('T', 'G', 'Z', '\0')) {
isTGZ = true;
// TGZ files have a header and then Bitmap data that is compressed with LZSS
uint32 decompressedSize = file.readSint32LE() / 2;
imageWidth = file.readSint32LE();
imageHeight = file.readSint32LE();
LzssReadStream lzssStream(&file);
buffer = (uint16 *)(new uint16[decompressedSize]);
lzssStream.read(buffer, 2 * decompressedSize);
#ifndef SCUMM_LITTLE_ENDIAN
for (uint32 i = 0; i < decompressedSize; ++i)
buffer[i] = FROM_LE_16(buffer[i]);
#endif
} else {
isTGZ = false;
// Reset the cursor
file.seek(0);
// Decode
if (!tga.loadStream(file)) {
warning("Error while reading TGA image");
return;
}
Graphics::Surface tgaSurface = *(tga.getSurface());
imageWidth = tgaSurface.w;
imageHeight = tgaSurface.h;
buffer = (uint16 *)tgaSurface.getPixels();
}
// Flip the width and height if transposed
if (transposed) {
uint16 temp = imageHeight;
imageHeight = imageWidth;
imageWidth = temp;
}
// If the destination internal buffer is the same size as what we're copying into it,
// there is no need to free() and re-create
if (imageWidth != destination.w || imageHeight != destination.h) {
destination.create(imageWidth, imageHeight, _engine->_resourcePixelFormat);
}
// If transposed, 'un-transpose' the data while copying it to the destination
// Otherwise, just do a simple copy
if (transposed) {
uint16 *dest = (uint16 *)destination.getPixels();
for (uint32 y = 0; y < imageHeight; ++y) {
uint32 columnIndex = y * imageWidth;
for (uint32 x = 0; x < imageWidth; ++x) {
dest[columnIndex + x] = buffer[x * imageHeight + y];
}
}
} else {
memcpy(destination.getPixels(), buffer, imageWidth * imageHeight * destination.format.bytesPerPixel);
}
// Cleanup
if (isTGZ) {
delete[] buffer;
} else {
tga.destroy();
}
}
void RenderManager::readImageToSurface(const Common::String &fileName, Graphics::Surface &destination) {
Common::File file;
if (!file.open(fileName)) {
warning("Could not open file %s", fileName.c_str());
return;
}
// Read the magic number
// Some files are true TGA, while others are TGZ
uint32 fileType = file.readUint32BE();
uint32 imageWidth;
uint32 imageHeight;
Graphics::TGADecoder tga;
uint16 *buffer;
bool isTransposed = _renderTable.getRenderState() == RenderTable::PANORAMA;
// All ZVision images are in RGB 555
Graphics::PixelFormat pixelFormat555 = Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0);
destination.format = pixelFormat555;
bool isTGZ;
// Check for TGZ files
if (fileType == MKTAG('T', 'G', 'Z', '\0')) {
isTGZ = true;
// TGZ files have a header and then Bitmap data that is compressed with LZSS
uint32 decompressedSize = file.readSint32LE();
imageWidth = file.readSint32LE();
imageHeight = file.readSint32LE();
LzssReadStream lzssStream(&file);
buffer = (uint16 *)(new uint16[decompressedSize]);
lzssStream.read(buffer, decompressedSize);
} else {
isTGZ = false;
// Reset the cursor
file.seek(0);
// Decode
if (!tga.loadStream(file)) {
warning("Error while reading TGA image");
return;
}
Graphics::Surface tgaSurface = *(tga.getSurface());
imageWidth = tgaSurface.w;
imageHeight = tgaSurface.h;
buffer = (uint16 *)tgaSurface.getPixels();
}
// Flip the width and height if transposed
if (isTransposed) {
uint16 temp = imageHeight;
imageHeight = imageWidth;
imageWidth = temp;
}
// If the destination internal buffer is the same size as what we're copying into it,
// there is no need to free() and re-create
if (imageWidth != destination.w || imageHeight != destination.h) {
destination.create(imageWidth, imageHeight, pixelFormat555);
}
// If transposed, 'un-transpose' the data while copying it to the destination
// Otherwise, just do a simple copy
if (isTransposed) {
uint16 *dest = (uint16 *)destination.getPixels();
for (uint32 y = 0; y < imageHeight; ++y) {
uint32 columnIndex = y * imageWidth;
for (uint32 x = 0; x < imageWidth; ++x) {
dest[columnIndex + x] = buffer[x * imageHeight + y];
}
}
} else {
memcpy(destination.getPixels(), buffer, imageWidth * imageHeight * _pixelFormat.bytesPerPixel);
}
// Cleanup
if (isTGZ) {
delete[] buffer;
} else {
tga.destroy();
}
// Convert in place to RGB 565 from RGB 555
destination.convertToInPlace(_pixelFormat);
}