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Diffstat (limited to 'engines/bladerunner/screen_effects.cpp')
| -rw-r--r-- | engines/bladerunner/screen_effects.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/engines/bladerunner/screen_effects.cpp b/engines/bladerunner/screen_effects.cpp new file mode 100644 index 0000000000..70c872b746 --- /dev/null +++ b/engines/bladerunner/screen_effects.cpp @@ -0,0 +1,139 @@ +/* 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 "bladerunner/screen_effects.h" + +#include "common/stream.h" + +namespace BladeRunner { + +ScreenEffects::ScreenEffects(BladeRunnerEngine *vm, int size) : _vm(vm) { + _dataSize = size; + _data = new uint8[size]; + _entries.reserve(8); +} + +ScreenEffects::~ScreenEffects() { + delete[] _data; +} + +void ScreenEffects::readVqa(Common::SeekableReadStream *stream) { + uint8* dataPtr = _data; + int dataSize = _dataSize; + + int entriesCount = stream->readUint32LE(); + + if (entriesCount == 0) { + return; + } + + entriesCount = MIN(entriesCount, 7); + _entries.resize(entriesCount); + + for (Common::Array<Entry>::iterator entry = _entries.begin(); entry != _entries.end(); entry++) { + stream->read(&entry->palette, sizeof(Color256) * 16); + + entry->x = stream->readUint16LE(); + entry->y = stream->readUint16LE(); + entry->width = stream->readUint16LE(); + entry->height = stream->readUint16LE(); + entry->z = stream->readUint16LE(); + + int entryDataSize = stream->readUint16LE(); + + int pixelCount = entry->width * entry->height; + + if (pixelCount > dataSize) { // to big to fit + entry->width = 0; + entry->height = 0; + entry->data = _data; + continue; + // there is a issue in the game code, because it's not skipping data of entry in this case + } + + int pos = stream->pos(); + dataSize -= pixelCount; + entry->data = dataPtr; + do { + uint8 count = stream->readByte(); + if (count & 0x80) { // repeat same data + uint8 colors = stream->readByte(); + for (uint8 j = 0; j < (count & 0x7F) + 1; j++) { + *(dataPtr++) = colors >> 4; // upper 4 bit + *(dataPtr++) = colors & 0xF; // lower 4 bit + pixelCount -= 2; + } + } else { // copy data + for (uint8 j = 0; j < count + 1; j++) { + uint8 colors = stream->readByte(); + *(dataPtr++) = colors >> 4; // upper 4 bit + *(dataPtr++) = colors & 0xF; // lower 4 bit + pixelCount -= 2; + } + } + } while (pixelCount > 0); + stream->seek(pos + entryDataSize, SEEK_SET); + } +} + +//TODO: +//bool ScreenEffects::isAffectingArea(int x, int y, int width, int height, int z) { +// int xx = x >> 1; +// int yy = y >> 1; +// if (_entries.empty()) { +// return false; +// } +// +// for(int i = 0; i < _entries.size(); i++) { +// Entry &entry = _entries[i]; +// if (entry.z < z) { +// if (entry.width < (width >> 1) + xx) { +// if (entry.width + entry.x > xx) { +// if (entry.height < (height >> 1) + yy) { +// if(entry.height + entry.y > yy) { +// return true; +// } +// } +// } +// } +// } +// } +// return false; +//} + +void ScreenEffects::getColor(Color256 *outColor, uint16 x, uint16 y, uint16 z) { + Color256 color = { 0, 0, 0 }; + for (Common::Array<Entry>::iterator entry = _entries.begin(); entry != _entries.end(); entry++) { + uint16 x1 = (x / 2) - entry->x; + uint16 y1 = (y / 2) - entry->y; + if ( x1 < entry->width && y1 < entry->height && z > entry->z) { + int colorIndex = entry->data[y1 * entry->width + x1]; + Color256 entryColor = entry->palette[colorIndex]; + color.r += entryColor.r; + color.g += entryColor.g; + color.b += entryColor.b; + } + } + *outColor = color; +} + +} // End of namespace BladeRunner |