diff options
Diffstat (limited to 'engines/m4/sprite.cpp')
| -rw-r--r-- | engines/m4/sprite.cpp | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/engines/m4/sprite.cpp b/engines/m4/sprite.cpp deleted file mode 100644 index d0741732f3..0000000000 --- a/engines/m4/sprite.cpp +++ /dev/null @@ -1,207 +0,0 @@ -/* 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/rect.h" -#include "common/textconsole.h" - -#include "m4/globals.h" -#include "m4/graphics.h" -#include "m4/m4.h" -#include "m4/resource.h" -#include "m4/sprite.h" - -namespace M4 { - -enum { - kEndOfLine = 0, - kEndOfSprite = 1, - kMarker = 2 -}; - -M4Sprite::M4Sprite(Common::SeekableReadStream* source, int xOfs, int yOfs, int widthVal, int heightVal, bool decodeRle, uint8 encodingVal) - : M4Surface(widthVal, heightVal), encoding(encodingVal) { - - if (_vm->isM4()) { - if (decodeRle) { - loadRle(source); - } else { - // Raw sprite data, load directly - byte *dst = getBasePtr(); - source->read(dst, widthVal * heightVal); - } - } else { - loadMadsSprite(source); - } - - x = xOffset = xOfs; - y = yOffset = yOfs; - -} - -void M4Sprite::loadRle(Common::SeekableReadStream* rleData) { - byte *dst = getBasePtr(); - while (1) { - byte len = rleData->readByte(); - if (len == 0) { - len = rleData->readByte(); - if (len <= kMarker) { - if (len == kEndOfSprite) - break; - } else { - while (len--) { - *dst++ = rleData->readByte(); - } - } - } else { - byte value = rleData->readByte(); - while (len--) - *dst++ = value; - } - } -} - -void M4Sprite::loadDeltaRle(Common::SeekableReadStream* rleData, int destX, int destY) { - int lineNum = 0; - byte *dst = getBasePtr(destX, destY); - while (1) { - byte len = rleData->readByte(); - if (len == 0) { - len = rleData->readByte(); - if (len <= kMarker) { - if (len == kEndOfLine) { - dst = getBasePtr(destX, destY + lineNum); - lineNum++; - } else if (len == kEndOfSprite) - break; - } else { - while (len--) { - byte pixel = rleData->readByte(); - if (pixel == 0) - dst++; - else - *dst++ = pixel; - /* NOTE: The change below behaved differently than the old code, - so I put the old code back in again above. - If the pixel value is 0, nothing should be written to the - output buffer, since 0 means transparent. */ - //*dst++ = (pixel == 0xFD) ? 0 : pixel; - } - } - } else { - byte value = rleData->readByte(); - if (value == 0) - dst += len; - else - while (len--) - *dst++ = value; - } - } -} - -// TODO: The sprite outlines (pixel value 0xFD) are not shown -void M4Sprite::loadMadsSprite(Common::SeekableReadStream* source) { - bool spriteEnd = false; - - // Set entire sprite contents to transparent pixels - fillRect(bounds(), TRANSPARENT_COLOR_INDEX); - - // Major line loop - for (int yp = 0; yp < h; ++yp) { - byte *destP = getBasePtr(0, yp); - bool newLine = false; - byte cmd = source->readByte(); - int x2 = 0; - - if (cmd == 0xfc) { - // End of entire sprite - spriteEnd = true; - break; - } else if (cmd == 0xff) { - // The entire line is empty - newLine = true; - } else if (cmd == 0xFD) { - // Lines contains only run lenghs of pixels - while (x2 < w) { - cmd = source->readByte(); - if (cmd == 0xff) { - // End of line reached - newLine = true; - break; - } - - byte v = source->readByte(); - while (cmd-- > 0) { - if (x2 < w) - *destP++ = (v == 0xFD) ? TRANSPARENT_COLOR_INDEX : v; - ++x2; - } - } - } else { - // Line intermixes run lengths with individual pixels - while (x2 < w) { - cmd = source->readByte(); - if (cmd == 0xff) { - // End of line reached - newLine = true; - break; - } - - if (cmd == 0xFE) { - // Handle repeated sequence - cmd = source->readByte(); - byte v = source->readByte(); - while (cmd-- > 0) { - if (x2 < w) { - *destP++ = (v == 0xFD) ? TRANSPARENT_COLOR_INDEX : v; - } - ++x2; - } - } else { - // Handle writing out single pixel - *destP++ = (cmd == 0xFD) ? TRANSPARENT_COLOR_INDEX : cmd; - ++x2; - } - } - } - - // Check if we need to scan forward to find the end of the line - if (!newLine) { - do { - if (source->eos()) { - warning("M4Sprite::loadMadsSprite: unexpected end of data"); - break; - } - } while (source->readByte() != 0xff); - } - } - - if (!spriteEnd) { - byte v = source->readByte(); - assert(v == 0xFC); - } -} - -byte M4Sprite::getTransparencyIndex() const { - return TRANSPARENT_COLOR_INDEX; -} - -} // End of namespace M4 |