void AGOSEngine::scrollScreen() {
byte *dst;
const byte *src;
uint x, y;
dst = getBackGround();
if (_scrollXMax == 0) {
uint screenSize = 8 * _screenWidth;
if (_scrollFlag < 0) {
memmove(dst + screenSize, dst, _scrollWidth * _screenHeight - screenSize);
} else {
memmove(dst, dst + screenSize, _scrollWidth * _screenHeight - screenSize);
}
y = _scrollY - 8;
if (_scrollFlag > 0) {
dst += _screenHeight * _screenWidth - screenSize;
y += 488;
}
src = _scrollImage + y / 2;
decodeRow(dst, src + readUint32Wrapper(src), _scrollWidth, _backGroundBuf->pitch);
_scrollY += _scrollFlag;
vcWriteVar(250, _scrollY);
fillBackFromBackGround(_screenHeight, _scrollWidth);
} else {
if (_scrollFlag < 0) {
memmove(dst + 8, dst, _screenWidth * _scrollHeight - 8);
} else {
memmove(dst, dst + 8, _screenWidth * _scrollHeight - 8);
}
x = _scrollX;
x -= (getGameType() == GType_FF) ? 8 : 1;
if (_scrollFlag > 0) {
dst += _screenWidth - 8;
x += (getGameType() == GType_FF) ? 648 : 41;
}
if (getGameType() == GType_FF)
src = _scrollImage + x / 2;
else
src = _scrollImage + x * 4;
decodeColumn(dst, src + readUint32Wrapper(src), _scrollHeight, _backGroundBuf->pitch);
_scrollX += _scrollFlag;
vcWriteVar(251, _scrollX);
if (getGameType() == GType_SIMON2) {
src = getBackGround();
dst = (byte *)_window4BackScn->pixels;
for (int i = 0; i < _scrollHeight; i++) {
memcpy(dst, src, _screenWidth);
src += _backGroundBuf->pitch;
dst += _window4BackScn->pitch;
}
} else {
fillBackFromBackGround(_scrollHeight, _screenWidth);
}
setMoveRect(0, 0, 320, _scrollHeight);
_window4Flag = 1;
}
_scrollFlag = 0;
if (getGameType() == GType_SIMON2) {
AnimTable *animTable = _screenAnim1;
while (animTable->srcPtr) {
animTable->srcPtr = 0;
animTable++;
}
VgaSprite *vsp = _vgaSprites;
while (vsp->id) {
vsp->windowNum |= 0x8000;
vsp++;
}
}
}
void AGOSEngine::dumpBitmap(const char *filename, const byte *offs, uint16 w, uint16 h, int flags, const byte *palette,
byte base) {
byte *imageBuffer = (byte *)malloc(w * h);
assert(imageBuffer);
VC10_state state;
state.depack_cont = -0x80;
state.srcPtr = offs;
state.dh = h;
state.height = h;
state.width = w / 16;
if (getFeatures() & GF_PLANAR) {
state.srcPtr = convertImage(&state, (getGameType() == GType_PN || (flags & 0x80) != 0));
flags &= ~0x80;
}
const byte *src = state.srcPtr;
byte *dst = imageBuffer;
int i, j;
if (w > _screenWidth) {
for (i = 0; i < w; i += 8) {
decodeColumn(dst, src + readUint32Wrapper(src), h, w);
dst += 8;
src += 4;
}
} else if (h > _screenHeight) {
for (i = 0; i < h; i += 8) {
decodeRow(dst, src + readUint32Wrapper(src), w, w);
dst += 8 * w;
src += 4;
}
} else if (getGameType() == GType_FF || getGameType() == GType_PP) {
if ((flags & 0x80)) {
for (i = 0; i != w; i++) {
byte *c = vc10_depackColumn(&state);
for (j = 0; j != h; j++) {
dst[j * w + i] = c[j];
}
}
} else {
for (j = 0; j != h; j++) {
for (i = 0; i != w; i++) {
dst[i] = src[i];
}
}
dst += w;
src += w;
}
} else if ((getGameType() == GType_SIMON1 || getGameType() == GType_SIMON2) && w == 320 && (h == 134 || h == 200)) {
for (j = 0; j != h; j++) {
uint16 count = w / 8;
byte *dstPtr = dst;
do {
uint32 bits = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | (src[3]);
dstPtr[0] = (byte)((bits >> (32 - 5)) & 31);
dstPtr[1] = (byte)((bits >> (32 - 10)) & 31);
dstPtr[2] = (byte)((bits >> (32 - 15)) & 31);
dstPtr[3] = (byte)((bits >> (32 - 20)) & 31);
dstPtr[4] = (byte)((bits >> (32 - 25)) & 31);
dstPtr[5] = (byte)((bits >> (32 - 30)) & 31);
bits = (bits << 8) | src[4];
dstPtr[6] = (byte)((bits >> (40 - 35)) & 31);
dstPtr[7] = (byte)((bits) & 31);
dstPtr += 8;
src += 5;
} while (--count);
dst += w;
}
} else if (flags & 0x80) {