mirror of
https://github.com/libretro/scummvm.git
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298 lines
8.2 KiB
C++
298 lines
8.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/stream.h"
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#include "common/substream.h"
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#include "gob/gob.h"
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#include "gob/util.h"
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#include "gob/dataio.h"
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#include "gob/surface.h"
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#include "gob/video.h"
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#include "gob/cmpfile.h"
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#include "gob/anifile.h"
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namespace Gob {
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ANIFile::ANIFile(GobEngine *vm, const Common::String &fileName,
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uint16 width, uint8 bpp) : _vm(vm),
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_width(width), _bpp(bpp), _hasPadding(false) {
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bool bigEndian = false;
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Common::String endianFileName = fileName;
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if ((_vm->getEndiannessMethod() == kEndiannessMethodAltFile) &&
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!_vm->_dataIO->hasFile(fileName)) {
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// If the game has alternate big-endian files, look if one exist
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Common::String alternateFileName = fileName;
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alternateFileName.setChar('_', 0);
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if (_vm->_dataIO->hasFile(alternateFileName)) {
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bigEndian = true;
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endianFileName = alternateFileName;
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}
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} else if ((_vm->getEndiannessMethod() == kEndiannessMethodBE) ||
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((_vm->getEndiannessMethod() == kEndiannessMethodSystem) &&
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(_vm->getEndianness() == kEndiannessBE)))
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// Game always little endian or it follows the system and it is big endian
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bigEndian = true;
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Common::SeekableReadStream *ani = _vm->_dataIO->getFile(endianFileName);
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if (ani) {
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Common::SeekableSubReadStreamEndian sub(ani, 0, ani->size(), bigEndian, DisposeAfterUse::YES);
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// The big endian version pads a few fields to even size
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_hasPadding = bigEndian;
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load(sub, fileName);
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return;
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}
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warning("ANIFile::ANIFile(): No such file \"%s\" (\"%s\")", endianFileName.c_str(), fileName.c_str());
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}
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ANIFile::~ANIFile() {
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for (LayerArray::iterator l = _layers.begin(); l != _layers.end(); ++l)
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delete *l;
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}
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void ANIFile::load(Common::SeekableSubReadStreamEndian &ani, const Common::String &fileName) {
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ani.skip(2); // Unused
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uint16 animationCount = ani.readUint16();
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uint16 layerCount = ani.readUint16();
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if (layerCount < 1)
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warning("ANIFile::load(): Less than one layer (%d) in file \"%s\"",
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layerCount, fileName.c_str());
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// Load the layers
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if (layerCount > 0) {
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ani.skip(13); // The first layer is ignored?
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if (_hasPadding)
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ani.skip(1);
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_layers.reserve(layerCount - 1);
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for (int i = 0; i < layerCount - 1; i++)
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_layers.push_back(loadLayer(ani));
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}
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_maxWidth = 0;
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_maxHeight = 0;
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// Load the animations
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_animations.resize(animationCount);
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_frames.resize(animationCount);
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for (uint16 animation = 0; animation < animationCount; animation++) {
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loadAnimation(_animations[animation], _frames[animation], ani);
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_maxWidth = MAX<uint16>(_maxWidth , _animations[animation].width);
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_maxHeight = MAX<uint16>(_maxHeight, _animations[animation].height);
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}
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}
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void ANIFile::loadAnimation(Animation &animation, FrameArray &frames,
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Common::SeekableSubReadStreamEndian &ani) {
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// Animation properties
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animation.name = Util::readString(ani, 13);
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if (_hasPadding)
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ani.skip(1);
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ani.skip(13); // The name a second time?!?
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if (_hasPadding)
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ani.skip(1);
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ani.skip(2); // Unknown
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animation.x = (int16) ani.readUint16();
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animation.y = (int16) ani.readUint16();
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animation.deltaX = (int16) ani.readUint16();
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animation.deltaY = (int16) ani.readUint16();
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animation.transp = ani.readByte() != 0;
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if (_hasPadding)
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ani.skip(1);
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uint16 frameCount = ani.readUint16();
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// Load the frames
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frames.resize(MAX<uint16>(1, frameCount));
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loadFrames(frames, ani);
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animation.frameCount = frames.size();
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animation.width = 0;
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animation.height = 0;
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// Calculate the areas of each frame
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animation.frameAreas.resize(animation.frameCount);
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for (uint16 i = 0; i < animation.frameCount; i++) {
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const ChunkList &frame = frames[i];
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FrameArea &area = animation.frameAreas[i];
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area.left = area.top = 0x7FFF;
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area.right = area.bottom = -0x7FFF;
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for (ChunkList::const_iterator c = frame.begin(); c != frame.end(); ++c) {
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uint16 cL, cT, cR, cB;
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if (!getCoordinates(c->layer, c->part, cL, cT, cR, cB))
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continue;
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const uint16 width = cR - cL + 1;
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const uint16 height = cB - cT + 1;
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const uint16 l = c->x;
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const uint16 t = c->y;
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const uint16 r = l + width - 1;
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const uint16 b = t + height - 1;
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area.left = MIN<int16>(area.left , l);
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area.top = MIN<int16>(area.top , t);
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area.right = MAX<int16>(area.right , r);
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area.bottom = MAX<int16>(area.bottom, b);
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}
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if ((area.left <= area.right) && (area.top <= area.bottom)) {
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animation.width = MAX<uint16>(animation.width , area.right - area.left + 1);
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animation.height = MAX<uint16>(animation.height, area.bottom - area.top + 1);
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}
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}
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}
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void ANIFile::loadFrames(FrameArray &frames, Common::SeekableSubReadStreamEndian &ani) {
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uint32 curFrame = 0;
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bool end = false;
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while (!end) {
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frames[curFrame].push_back(AnimationChunk());
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AnimationChunk &chunk = frames[curFrame].back();
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uint8 layerFlags = ani.readByte();
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// Chunk properties
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chunk.layer = (layerFlags & 0x0F) - 1;
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chunk.part = ani.readByte();
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chunk.x = (int8) ani.readByte();
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chunk.y = (int8) ani.readByte();
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// X multiplier/offset
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int16 xOff = ((layerFlags & 0xC0) >> 6) << 7;
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if (chunk.x >= 0)
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chunk.x += xOff;
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else
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chunk.x -= xOff;
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// Y multiplier/offset
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int16 yOff = ((layerFlags & 0x30) >> 4) << 7;
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if (chunk.y >= 0)
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chunk.y += yOff;
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else
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chunk.y -= yOff;
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uint8 multiPart = ani.readByte();
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if (multiPart == 0xFF) // No more frames in this animation
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end = true;
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else if (multiPart != 0x01) // No more chunks in this frame
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curFrame++;
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// Shouldn't happen, but just to be safe
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if (curFrame >= frames.size())
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frames.resize(curFrame + 1);
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if (_hasPadding)
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ani.skip(1);
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if (ani.eos() || ani.err())
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error("ANIFile::loadFrames(): Read error");
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}
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}
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CMPFile *ANIFile::loadLayer(Common::SeekableSubReadStreamEndian &ani) {
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Common::String file = Util::setExtension(Util::readString(ani, 13), "");
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if (_hasPadding)
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ani.skip(1);
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return new CMPFile(_vm, file, _width, 0, _bpp);
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}
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uint16 ANIFile::getAnimationCount() const {
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return _animations.size();
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}
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void ANIFile::getMaxSize(uint16 &width, uint16 &height) const {
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width = _maxWidth;
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height = _maxHeight;
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}
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const ANIFile::Animation &ANIFile::getAnimationInfo(uint16 animation) const {
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assert(animation < _animations.size());
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return _animations[animation];
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}
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bool ANIFile::getCoordinates(uint16 layer, uint16 part,
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uint16 &left, uint16 &top, uint16 &right, uint16 &bottom) const {
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if (layer >= _layers.size())
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return false;
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return _layers[layer]->getCoordinates(part, left, top, right, bottom);
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}
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void ANIFile::draw(Surface &dest, uint16 animation, uint16 frame, int16 x, int16 y) const {
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if (animation >= _animations.size())
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return;
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const Animation &anim = _animations[animation];
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if (frame >= anim.frameCount)
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return;
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const ChunkList &chunks = _frames[animation][frame];
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for (ChunkList::const_iterator c = chunks.begin(); c != chunks.end(); ++c)
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drawLayer(dest, c->layer, c->part, x + c->x, y + c->y, anim.transp ? 0 : -1);
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}
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void ANIFile::drawLayer(Surface &dest, uint16 layer, uint16 part,
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int16 x, int16 y, int32 transp) const {
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if (layer >= _layers.size())
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return;
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_layers[layer]->draw(dest, part, x, y, transp);
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}
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void ANIFile::recolor(uint8 from, uint8 to) {
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for (LayerArray::iterator l = _layers.begin(); l != _layers.end(); ++l)
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(*l)->recolor(from, to);
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}
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} // End of namespace Gob
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