mirror of
https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/* 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "common/debug.h"
|
|
#include "common/file.h"
|
|
#include "darkseed/darkseed.h"
|
|
#include "darkseed/kidpic.h"
|
|
|
|
namespace Darkseed {
|
|
|
|
static constexpr int BYTES_PER_LINE = 320;
|
|
static constexpr int BYTES_PER_PLANE = 80;
|
|
|
|
static constexpr int KID_WIDTH = 640;
|
|
static constexpr int KID_HEIGHT = 350;
|
|
|
|
KidPic::KidPic() {
|
|
_pixels.resize(KID_WIDTH * KID_HEIGHT);
|
|
Common::File file;
|
|
if (!file.open("kid.pic")) {
|
|
error("Failed to open kid.pic");
|
|
}
|
|
|
|
file.seek(0x10);
|
|
Pal pal;
|
|
pal.loadFromStream(file, false);
|
|
pal.swapEntries(14, 4); // not sure why we need to swap these palette entries. All the other entries line up correctly.
|
|
pal.installPalette();
|
|
unpackRLE(file);
|
|
}
|
|
|
|
bool KidPic::unpackRLE(Common::SeekableReadStream &readStream) {
|
|
uint idx = 0;
|
|
uint unpackedSize = _pixels.size() / 2;
|
|
|
|
readStream.seek(0x80);
|
|
|
|
while (idx < unpackedSize && !readStream.eos()) {
|
|
uint8 byte = readStream.readByte();
|
|
assert(!readStream.err());
|
|
|
|
uint repeat = 1;
|
|
if ((byte & 192) == 192) {
|
|
repeat = (byte & 63);
|
|
byte = readStream.readByte();
|
|
assert(!readStream.err());
|
|
}
|
|
|
|
for (uint j = 0; j < repeat; j++) {
|
|
unpackByte(byte);
|
|
}
|
|
idx += repeat;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// image is stored as 4 x 1-bit planes per line.
|
|
void KidPic::unpackByte(uint8 byte) {
|
|
int planeOffset = _lineByteIdx / BYTES_PER_PLANE;
|
|
int x = _lineByteIdx % BYTES_PER_PLANE;
|
|
for (int i = 0; i < 8; i++) {
|
|
if (byte & 1 << (7 - i)) {
|
|
_pixels[_lineNum * KID_WIDTH + (x * 8) + i] |= 1 << planeOffset;
|
|
}
|
|
}
|
|
_lineByteIdx++;
|
|
if (_lineByteIdx == BYTES_PER_LINE) {
|
|
_lineByteIdx = 0;
|
|
_lineNum++;
|
|
}
|
|
}
|
|
|
|
void KidPic::draw() {
|
|
g_engine->_screen->copyRectToSurface(_pixels.data(), KID_WIDTH, 0, 0, KID_WIDTH, KID_HEIGHT);
|
|
}
|
|
|
|
} // namespace Darkseed
|