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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/scummsys.h"
#include "mads/mads.h"
#include "mads/assets.h"
#include "mads/compression.h"
#include "mads/events.h"
#include "mads/palette.h"
namespace MADS {
SpriteAsset::SpriteAsset(MADSEngine *vm, const Common::String &resourceName, int flags) : _vm(vm) {
Common::String resName = resourceName;
if (!resName.hasSuffix(".SS") && !resName.hasSuffix(".ss"))
resName += ".SS";
_srcSize = 0;
File file(resName);
load(&file, flags);
file.close();
}
SpriteAsset::SpriteAsset(MADSEngine *vm, Common::SeekableReadStream *stream, int flags) : _vm(vm) {
_srcSize = 0;
load(stream, flags);
}
SpriteAsset::~SpriteAsset() {
if (_usageIndex)
_vm->_palette->_paletteUsage.resetPalFlags(_usageIndex);
for (uint i = 0; i < _frames.size(); ++i)
delete _frames[i]._frame;
delete _charInfo;
}
void SpriteAsset::load(Common::SeekableReadStream *stream, int flags) {
int curFrame = 0;
uint32 frameOffset = 0;
MadsPack sprite(stream);
_frameRate = 0;
_pixelSpeed = 0;
_maxWidth = 0;
_maxHeight = 0;
_usageIndex = -1;
Common::SeekableReadStream *spriteStream = sprite.getItemStream(0);
_mode = spriteStream->readByte();
spriteStream->skip(1);
int type1 = spriteStream->readUint16LE();
int type2 = spriteStream->readUint16LE();
_isBackground = (type1 != 0) && (type2 < 4);
spriteStream->skip(32);
_frameCount = spriteStream->readUint16LE();
if ((flags & ASSET_CHAR_INFO) == 0)
_charInfo = nullptr;
else
_charInfo = new SpriteSetCharInfo(spriteStream);
delete spriteStream;
// Get the palette data
Common::SeekableReadStream *palStream = sprite.getItemStream(2);
Common::Array<RGB6> palette;
int numColors = palStream->readUint16LE();
assert(numColors <= 252);
_colorCount = numColors;
// Load in the palette
palette.resize(numColors);
for (int i = 0; i < numColors; ++i)
palette[i].load(palStream);
delete palStream;
// Process the palette data
if (flags & (ASSET_TRANSLATE | ASSET_SPINNING_OBJECT)) {
_usageIndex = 0;
if (flags & ASSET_SPINNING_OBJECT) {
int newPalCtr = 0;
for (uint i = 0; i < palette.size(); ++i) {
RGB6 &rgb = palette[i];
// Scan for existing rgb at beginning of the main palette
bool found = false;
for (int pIndex = 0; pIndex < 4 && !found; ++pIndex) {
byte *palP = &_vm->_palette->_mainPalette[pIndex * 3];
if (palP[0] == rgb.r && palP[1] == rgb.g && palP[2] == rgb.b) {
rgb._palIndex = pIndex;
found = true;
}
}
if (!found) {
// Existing palette entry not found, so need to add it in
int palIndex = (0xF7F607 >> (8 * newPalCtr)) & 0xff;
byte *palP = &_vm->_palette->_mainPalette[palIndex * 3];
palP[0] = rgb.r;
palP[1] = rgb.g;
palP[2] = rgb.b;
rgb._palIndex = palIndex;
newPalCtr = MIN(newPalCtr + 1, 2);
}
}
}
} else {
_usageIndex = _vm->_palette->_paletteUsage.process(palette, flags & 0xF800);
assert(_usageIndex >= 0);
}
spriteStream = sprite.getItemStream(1);
Common::SeekableReadStream *spriteDataStream = sprite.getItemStream(3);
SpriteAssetFrame frame;
Common::Array<int> frameSizes;
for (curFrame = 0; curFrame < _frameCount; curFrame++) {
frame._stream = 0;
frame._comp = 0;
frameOffset = spriteStream->readUint32LE();
_frameOffsets.push_back(frameOffset);
uint32 frameSize = spriteStream->readUint32LE();
frameSizes.push_back(frameSize);
frame._bounds.left = spriteStream->readSint16LE();
frame._bounds.top = spriteStream->readSint16LE();
frame._bounds.setWidth(spriteStream->readUint16LE());
frame._bounds.setHeight(spriteStream->readUint16LE());
if (curFrame == 0)
debugC(1, kDebugGraphics, "%i frames, x = %i, y = %i, w = %i, h = %i\n",
_frameCount, frame._bounds.left, frame._bounds.top,
frame._bounds.width(), frame._bounds.height());
if (_mode == 0) {
// Create a frame and decompress the raw pixel data
uint32 currPos = (uint32)spriteDataStream->pos();
frame._frame = new MSprite(spriteDataStream, palette, frame._bounds);
assert((uint32)spriteDataStream->pos() == (currPos + frameSize));
}
_frames.push_back(frame);
}
if (_mode != 0) {
// Handle decompressing Fab encoded data
for (curFrame = 0; curFrame < _frameCount; curFrame++) {
FabDecompressor fab;
int srcSize = (curFrame == (_frameCount - 1)) ? spriteDataStream->size() - _frameOffsets[curFrame] :
_frameOffsets[curFrame + 1] - _frameOffsets[curFrame];
byte *srcData = new byte[srcSize];
assert(srcData);
spriteDataStream->read(srcData, srcSize);
byte *destData = new byte[frameSizes[curFrame]];
assert(destData);
fab.decompress(srcData, srcSize, destData, frameSizes[curFrame]);
// Load the frames
Common::MemoryReadStream *rs = new Common::MemoryReadStream(destData, frameSizes[curFrame]);
_frames[curFrame]._frame = new MSprite(rs, palette, _frames[curFrame]._bounds);
delete rs;
delete[] srcData;
delete[] destData;
}
}
delete spriteStream;
delete spriteDataStream;
}
MSprite *SpriteAsset::getFrame(int frameIndex) {
if ((uint)frameIndex < _frames.size()) {
return _frames[frameIndex]._frame;
} else {
debugC(kDebugGraphics, "SpriteAsset::getFrame: Invalid frame %d, out of %d", frameIndex, _frames.size());
return _frames[_frames.size() - 1]._frame;
}
}
/*------------------------------------------------------------------------*/
SpriteSetCharInfo::SpriteSetCharInfo(Common::SeekableReadStream *s) {
_totalFrames = s->readByte();
s->skip(1);
_numEntries = s->readUint16LE();
for (int i = 0; i < 16; ++i)
_startFrames[i] = s->readUint16LE();
for (int i = 0; i < 16; ++i)
_stopFrames[i] = s->readUint16LE();
for (int i = 0; i < 16; ++i)
_ticksList[i] = s->readUint16LE();
_velocity = s->readUint16LE();
_ticksAmount = s->readByte();
_centerOfGravity = s->readByte();
}
} // End of namespace MADS
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