119 lines
3.7 KiB
C++
119 lines
3.7 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "twine/parser/sprite.h"
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#include "common/stream.h"
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#include "twine/shared.h"
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namespace TwinE {
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bool SpriteBoundingBoxData::loadFromStream(Common::SeekableReadStream &stream, bool lba1) {
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const int32 size = stream.size();
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const int32 amount = size / 16;
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for (int32 i = 0; i < amount; ++i) {
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SpriteDim spriteDim;
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spriteDim.x = stream.readSint16LE();
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spriteDim.y = stream.readSint16LE();
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BoundingBox boundingBox;
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boundingBox.mins.x = stream.readSint16LE();
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boundingBox.maxs.x = stream.readSint16LE();
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boundingBox.mins.y = stream.readSint16LE();
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boundingBox.maxs.y = stream.readSint16LE();
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boundingBox.mins.z = stream.readSint16LE();
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boundingBox.maxs.z = stream.readSint16LE();
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_boundingBoxes.push_back(boundingBox);
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_dimensions.push_back(spriteDim);
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}
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return !stream.err();
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}
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void SpriteData::reset() {
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for (int i = 0; i < _sprites; ++i) {
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_surfaces[i].free();
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}
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_sprites = 0;
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}
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bool SpriteData::loadFromStream(Common::SeekableReadStream &stream, bool lba1) {
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reset();
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if (_bricks) {
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// brick sprites don't have the offsets
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return loadSprite(stream, 0);
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}
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const uint32 offset1 = stream.readUint32LE();
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const uint32 offset2 = stream.readUint32LE();
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const uint32 offsetData = stream.pos();
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if (!loadSprite(stream, offset1)) {
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return false;
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}
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// for most sprites the second offset is just the end of the stream - but
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// some sprites (like shadow in lba1) have a second sprite following the
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// first one.
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if (offset2 + offsetData >= stream.size()) {
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return true;
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}
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return loadSprite(stream, offset2);
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}
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bool SpriteData::loadSprite(Common::SeekableReadStream &stream, uint32 offset) {
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stream.seek(offset);
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int width = stream.readByte();
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int height = stream.readByte();
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_offsetX[_sprites] = stream.readByte();
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_offsetY[_sprites] = stream.readByte();
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const Graphics::PixelFormat format = Graphics::PixelFormat::createFormatCLUT8();
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_surfaces[_sprites].create(width, height, format);
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const uint8 *last = (const uint8 *)_surfaces[_sprites].getBasePtr(width, height - 1);
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for (int y = 0; y < height; ++y) {
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const uint8 numRuns = stream.readByte();
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int x = 0;
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for (uint8 run = 0; run < numRuns; ++run) {
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const uint8 runSpec = stream.readByte();
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const uint8 runLength = bits(runSpec, 0, 6) + 1;
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const uint8 type = bits(runSpec, 6, 2);
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if (type == 1) {
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uint8 *start = (uint8 *)_surfaces[_sprites].getBasePtr(x, y);
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for (uint8 i = 0; i < runLength; ++i) {
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if (start > last) {
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return false;
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}
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*start++ = stream.readByte();
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}
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} else if (type != 0) {
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uint8 *start = (uint8 *)_surfaces[_sprites].getBasePtr(x, y);
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uint8 *end = (uint8 *)_surfaces[_sprites].getBasePtr(x + runLength, y);
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if (end > last) {
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return false;
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}
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Common::fill(start, end, stream.readByte());
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}
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x += runLength;
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}
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}
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if (stream.err()) {
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return false;
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}
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++_sprites;
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return true;
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}
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} // namespace TwinE
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