static void DecompressMaskImgOr(PixelNavigator dst, Stream src, int height)
{
byte b, c;
while (height != 0)
{
b = (byte)src.ReadByte();
if ((b & 0x80) != 0)
{
b &= 0x7F;
c = (byte)src.ReadByte();
do
{
dst.Write((byte)(dst.Read() | c));
dst.OffsetY(1);
--height;
} while ((--b != 0) && (height != 0));
}
else
{
do
{
dst.Write((byte)(dst.Read() | src.ReadByte()));
dst.OffsetY(1);
--height;
} while ((--b != 0) && (height != 0));
}
}
}
static void DecompressMaskImg(PixelNavigator dst, Stream src, int height)
{
while (height != 0)
{
var b = (byte)src.ReadByte();
if ((b & 0x80) != 0)
{
b &= 0x7F;
var c = (byte)src.ReadByte();
do
{
dst.Write(c);
dst.OffsetY(1);
--height;
} while (--b != 0 && height != 0);
}
else
{
do
{
dst.Write((byte)src.ReadByte());
dst.OffsetY(1);
--height;
} while (--b != 0 && height != 0);
}
}
}
void DrawStripV1Background(PixelNavigator navDst, int stripnr, int height)
{
int charIdx;
height /= 8;
for (int y = 0; y < height; y++)
{
_v1.Colors[3] = (byte)(_v1.ColorMap[y + stripnr * height] & 7);
// Check for room color change in V1 zak
if (RoomPalette[0] == 255)
{
_v1.Colors[2] = RoomPalette[2];
_v1.Colors[1] = RoomPalette[1];
}
charIdx = _v1.PicMap[y + stripnr * height] * 8;
for (int i = 0; i < 8; i++)
{
byte c = _v1.CharMap[charIdx + i];
var color = _v1.Colors[(c >> 6) & 3];
navDst.Write(0, color);
navDst.Write(1, color);
color = _v1.Colors[(c >> 4) & 3];
navDst.Write(2, color);
navDst.Write(3, color);
color = _v1.Colors[(c >> 2) & 3];
navDst.Write(4, color);
navDst.Write(5, color);
color = _v1.Colors[(c >> 0) & 3];
navDst.Write(6, color);
navDst.Write(7, color);
navDst.OffsetY(1);
}
}
}
void DrawStripRaw(PixelNavigator navDst, BinaryReader src, int height, bool transpCheck)
{
int x;
if (game.Features.HasFlag(GameFeatures.Old256))
{
int h = height;
x = 8;
while (true)
{
navDst.Write(RoomPalette[src.ReadByte()]);
if (!NextRow(ref navDst, ref x, ref h, height))
{
return;
}
}
}
do
{
for (x = 0; x < 8; x++)
{
int color = src.ReadByte();
if (!transpCheck || color != TransparentColor)
{
navDst.OffsetX(x);
WriteRoomColor(navDst, color);
navDst.OffsetX(-x);
}
}
navDst.OffsetY(1);
} while ((--height) != 0);
}
void DrawStripV1Object(PixelNavigator navDst, int stripnr, int width, int height)
{
int charIdx;
height /= 8;
width /= 8;
for (var y = 0; y < height; y++)
{
_v1.Colors[3] = (byte)(objectMap[(y + height) * width + stripnr] & 7);
charIdx = objectMap[y * width + stripnr] * 8;
for (var i = 0; i < 8; i++)
{
byte c = _v1.CharMap[charIdx + i];
var color = _v1.Colors[(c >> 6) & 3];
navDst.Write(0, color);
navDst.Write(1, color);
color = _v1.Colors[(c >> 4) & 3];
navDst.Write(2, color);
navDst.Write(3, color);
color = _v1.Colors[(c >> 2) & 3];
navDst.Write(4, color);
navDst.Write(5, color);
color = _v1.Colors[(c >> 0) & 3];
navDst.Write(6, color);
navDst.Write(7, color);
navDst.OffsetY(1);
}
}
}
void DrawStripV1Mask(PixelNavigator navDst, int stripnr, int width, int height)
{
int maskIdx;
height /= 8;
width /= 8;
for (var y = 0; y < height; y++)
{
if (_objectMode)
{
maskIdx = objectMap[(y + 2 * height) * width + stripnr] * 8;
}
else
{
maskIdx = _v1.MaskMap[y + stripnr * height] * 8;
}
for (var i = 0; i < 8; i++)
{
byte c = _v1.MaskChar[maskIdx + i];
// V1/V0 masks are inverted compared to what ScummVM expects
navDst.Write((byte)(c ^ 0xFF));
navDst.OffsetY(1);
}
}
}
public void DrawChar(PixelNavigator dst, char c, int x, int y, byte color)
{
var width = Math.Min((int)_chars[c].Width, dst.Width - x);
var height = Math.Min((int)_chars[c].Height, dst.Height - y);
var src = UnpackChar(c);
var srcPitch = _chars[c].Width;
var srcPos = 0;
var minX = x < 0 ? -x : 0;
var minY = y < 0 ? -y : 0;
if (height <= 0 || width <= 0)
{
return;
}
if (minY != 0)
{
srcPos += minY * srcPitch;
dst.OffsetY(minY);
}
for (int ty = minY; ty < height; ty++)
{
for (int tx = minX; tx < width; tx++)
{
if (src[srcPos + tx] != _chars[c].Transparency)
{
if (src[srcPos + tx] == 1)
{
dst.Write(tx, color);
}
else
{
dst.Write(tx, src[srcPos + tx]);
}
}
}
srcPos += srcPitch;
dst.OffsetY(1);
}
}
static bool NextRow(ref PixelNavigator navDst, ref int x, ref int y, int height)
{
navDst.OffsetY(1);
if (--y == 0)
{
if ((--x) == 0)
{
return(false);
}
navDst.Offset(1, -height);
y = height;
}
return(true);
}
void DrawStripBasicV(PixelNavigator navDst, BinaryReader src, int height, bool transpCheck)
{
byte color = src.ReadByte();
uint bits = src.ReadByte();
byte cl = 8;
int inc = -1;
int x = 8;
do
{
int h = height;
do
{
FillBits(ref cl, ref bits, src);
if (!transpCheck || color != transparentColor)
{
WriteRoomColor(navDst, color);
}
navDst.OffsetY(1);
if (!ReadBit(ref cl, ref bits))
{
}
else if (!ReadBit(ref cl, ref bits))
{
FillBits(ref cl, ref bits, src);
color = (byte)(bits & decompMask);
bits >>= decompShr;
cl -= decompShr;
inc = -1;
}
else if (!ReadBit(ref cl, ref bits))
{
color = (byte)(color + inc);
}
else
{
inc = -inc;
color = (byte)(color + inc);
}
} while ((--h) != 0);
navDst.Offset(1, -height);
} while ((--x) != 0);
}
void UnkDecode11(PixelNavigator navDst, BinaryReader src, int height)
{
int i;
int buffer = 0, mask = 128;
int inc = 1;
int color = src.ReadByte();
int x = 8;
do
{
int h = height;
do
{
navDst.Write(RoomPalette[color]);
navDst.OffsetY(1);
for (i = 0; i < 3; i++)
{
if (!ReadBit256(src, ref mask, ref buffer))
{
break;
}
}
switch (i)
{
case 1:
inc = -inc;
color -= inc;
break;
case 2:
color -= inc;
break;
case 3:
inc = 1;
color = ReadNBits(src, 8, ref mask, ref buffer);
break;
}
} while ((--h) != 0);
navDst.Offset(1, -height);
} while ((--x) != 0);
}
protected virtual void DrawBits1(Surface surface, int x, int y, BinaryReader src, int drawTop, int width, int height)
{
var dst = new PixelNavigator(surface);
dst.GoTo(x, y);
byte bits = 0;
byte col = Color;
//int pitch = surface.Pitch - width * surface.BytesPerPixel;
var dst2 = new PixelNavigator(dst);
dst2.OffsetY(1);
for (y = 0; y < height && y + drawTop < surface.Height; y++)
{
for (x = 0; x < width; x++)
{
if ((x % 8) == 0)
{
bits = src.ReadByte();
}
if ((bits & ScummHelper.RevBitMask(x % 8)) != 0 && y + drawTop >= 0)
{
if (_shadowMode)
{
dst.OffsetX(1);
dst.Write(_shadowColor);
dst2.Write(_shadowColor);
dst2.OffsetX(1);
dst2.Write(_shadowColor);
}
dst.Write(col);
}
dst.OffsetX(1);
dst2.OffsetX(1);
}
dst.OffsetX(surface.Width - width);
dst2.OffsetX(surface.Width - width);
}
}
void Akos16Decompress(PixelNavigator dest, int srcPos, int t_width, int t_height, int dir,
int numskip_before, int numskip_after, byte transparency, int maskLeft, int maskTop, int zBuf)
{
var tmp_buf = _akos16.Buffer;
var tmp_pos = 0;
var maskbit = (byte)ScummHelper.RevBitMask(maskLeft & 7);
if (dir < 0)
{
dest.OffsetX(-(t_width - 1));
tmp_pos += (t_width - 1);
}
Akos16SetupBitReader(srcPos);
if (numskip_before != 0)
{
Akos16SkipData(numskip_before);
}
var maskptr = _vm.GetMaskBuffer(maskLeft, maskTop, zBuf);
Debug.Assert(t_height > 0);
Debug.Assert(t_width > 0);
while ((t_height--) != 0)
{
Akos16DecodeLine(tmp_buf, tmp_pos, t_width, dir);
BompDrawData.BompApplyMask(_akos16.Buffer, 0, maskptr, maskbit, t_width, transparency);
BompDrawData.BompApplyShadow(ShadowMode, ShadowTable, _akos16.Buffer, 0, dest, t_width, transparency);
if (numskip_after != 0)
{
Akos16SkipData(numskip_after);
}
dest.OffsetY(1);
maskptr.OffsetY(1);
}
}
protected override void DrawBits1(Surface dest, int x, int y, BinaryReader src, int drawTop, int width, int height)
{
if (_sjisCurChar != 0)
{
// Debug.Assert(Vm._cjkFont);
// Vm._cjkFont.drawChar(dest, _sjisCurChar, x, y, _color, _shadowColor);
return;
}
bool scale2x = ((dest == Vm.TextSurface) && (Vm.TextSurfaceMultiplier == 2) /*&& !(_sjisCurChar >= 256 && Vm.UseCJKMode)*/);
byte bits = 0;
var col = Color;
var bpp = Surface.GetBytesPerPixel(dest.PixelFormat);
int pitch = dest.Pitch - width * bpp;
var dst = new PixelNavigator(dest);
dst.GoTo(x, y);
var dst2 = new PixelNavigator(dst);
dst2.OffsetY(1);
var dst3 = new PixelNavigator(dst2);
var dst4 = new PixelNavigator(dst2);
if (scale2x)
{
dst3.OffsetY(1);
dst4.OffsetY(1);
pitch <<= 1;
}
for (y = 0; y < height && y + drawTop < dest.Height; y++)
{
for (x = 0; x < width; x++)
{
if ((x % 8) == 0)
{
bits = src.ReadByte();
}
if (((bits & ScummHelper.RevBitMask(x % 8)) != 0) && y + drawTop >= 0)
{
if (bpp == 2)
{
if (_enableShadow)
{
dst.WriteUInt16(2, Vm._16BitPalette[_shadowColor]);
dst.WriteUInt16(2 + dest.Pitch, Vm._16BitPalette[_shadowColor]);
}
dst.WriteUInt16(Vm._16BitPalette[Color]);
}
else
{
if (_enableShadow)
{
if (scale2x)
{
dst.Write(2, _shadowColor);
dst.Write(3, _shadowColor);
dst2.Write(2, _shadowColor);
dst2.Write(3, _shadowColor);
dst3.Write(0, _shadowColor);
dst3.Write(1, _shadowColor);
dst4.Write(0, _shadowColor);
dst4.Write(0, _shadowColor);
}
else
{
dst2.Write(_shadowColor);
dst.Write(1, _shadowColor);
}
}
dst.Write(col);
if (scale2x)
{
dst.Write(1, col);
dst2.Write(0, col);
dst2.Write(1, col);
}
}
}
dst.OffsetX(1);
dst2.OffsetX(1);
if (scale2x)
{
dst.OffsetX(1);
dst2.OffsetX(1);
dst3.OffsetX(1);
dst4.OffsetX(1);
}
}
dst.OffsetX(pitch / dst.BytesByPixel);
dst2.OffsetX(pitch / dst2.BytesByPixel);
dst3.OffsetX(pitch / dst3.BytesByPixel);
dst4.OffsetX(pitch / dst4.BytesByPixel);
}
}
void Proc3(Codec1 v1)
{
int y = v1.Y;
_loaded.CostumeReader.BaseStream.Seek(_srcptr, System.IO.SeekOrigin.Begin);
var dst = new PixelNavigator(v1.DestPtr);
var len = v1.RepLen;
uint color = v1.RepColor;
var height = (uint)_height;
var scaleIndexY = _scaleIndexY;
var maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
var mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
bool ehmerde = (len != 0);
do
{
if (!ehmerde)
{
len = _loaded.CostumeReader.ReadByte();
color = (uint)(len >> v1.Shr);
len &= v1.Mask;
if (len == 0)
{
len = _loaded.CostumeReader.ReadByte();
}
}
do
{
if (!ehmerde)
{
if (ScaleY == 255 || v1.Scaletable[scaleIndexY++] < ScaleY)
{
var masked = (y < 0 || y >= _h) || (v1.X < 0 || v1.X >= _w) || ((mask.Read() & maskbit) != 0);
if (color != 0 && !masked)
{
byte pcolor;
if ((ShadowMode & 0x20) != 0)
{
pcolor = ShadowTable[dst.Read()];
}
else
{
pcolor = (byte)_palette[color];
if (pcolor == 13 && ShadowTable != null)
{
pcolor = ShadowTable[dst.Read()];
}
}
dst.Write(pcolor);
}
dst.OffsetY(1);
mask.OffsetY(1);
y++;
}
if ((--height) == 0)
{
if ((--v1.SkipWidth) == 0)
{
return;
}
height = (uint)_height;
y = v1.Y;
scaleIndexY = _scaleIndexY;
if (ScaleX == 255 || v1.Scaletable[_scaleIndexX] < ScaleX)
{
v1.X += v1.ScaleXStep;
if (v1.X < 0 || v1.X >= _w)
{
return;
}
maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
v1.DestPtr.OffsetX(v1.ScaleXStep);
}
_scaleIndexX = (byte)(_scaleIndexX + v1.ScaleXStep);
dst = new PixelNavigator(v1.DestPtr);
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
}
}
ehmerde = false;
} while ((--len) != 0);
} while (true);
}
void DrawStripRaw(PixelNavigator navDst, BinaryReader src, int height, bool transpCheck)
{
int x;
if (game.Features.HasFlag(GameFeatures.Old256))
{
int h = height;
x = 8;
while (true)
{
navDst.Write(RoomPalette[src.ReadByte()]);
if (!NextRow(ref navDst, ref x, ref h, height))
return;
}
}
do
{
for (x = 0; x < 8; x++)
{
int color = src.ReadByte();
if (!transpCheck || color != TransparentColor)
{
navDst.OffsetX(x);
WriteRoomColor(navDst, color);
navDst.OffsetX(-x);
}
}
navDst.OffsetY(1);
} while ((--height) != 0);
}
protected override void PrepareDrawBitmap(ImageData img, VirtScreen vs,
Point p, int width, int height,
int stripnr, int numstrip)
{
var ptr = img.Data;
//
// Since V3, all graphics data was encoded in strips, which is very efficient
// for redrawing only parts of the screen. However, V2 is different: here
// the whole graphics are encoded as one big chunk. That makes it rather
// difficult to draw only parts of a room/object. We handle the V2 graphics
// differently from all other (newer) graphic formats for this reason.
//
var table = (_objectMode ? null : _roomStrips);
int left = (stripnr * 8);
int right = left + (numstrip * 8);
PixelNavigator navDst;
var srcOffset = 0;
byte color, data = 0;
int run;
bool dither = false;
byte[] dither_table = new byte[128];
var ditherOffset = 0;
int theX, theY, maxX;
var surface = vs.HasTwoBuffers ? vs.Surfaces[1] : vs.Surfaces[0];
navDst = new PixelNavigator(surface);
navDst.GoTo(p.X * 8, p.Y);
var mask_ptr = GetMaskBuffer(p.X, p.Y, 1);
if (table != null)
{
run = table.run[stripnr];
color = (byte)table.color[stripnr];
srcOffset = table.offsets[stripnr];
theX = left;
maxX = right;
}
else
{
run = 1;
color = 0;
srcOffset = 0;
theX = 0;
maxX = width;
}
// Decode and draw the image data.
Debug.Assert(height <= 128);
for (; theX < maxX; theX++)
{
ditherOffset = 0;
for (theY = 0; theY < height; theY++)
{
if (--run == 0)
{
data = ptr[srcOffset++];
if ((data & 0x80) != 0)
{
run = data & 0x7f;
dither = true;
}
else
{
run = data >> 4;
dither = false;
}
color = RoomPalette[data & 0x0f];
if (run == 0)
{
run = ptr[srcOffset++];
}
}
if (!dither)
{
dither_table[ditherOffset] = color;
}
if (left <= theX && theX < right)
{
navDst.Write(dither_table[ditherOffset++]);
navDst.OffsetY(1);
}
}
if (left <= theX && theX < right)
{
navDst.Offset(1, -height);
}
}
// Draw mask (zplane) data
theY = 0;
if (table != null)
{
srcOffset = table.zoffsets[stripnr];
run = table.zrun[stripnr];
theX = left;
}
else
{
run = ptr[srcOffset++];
theX = 0;
}
while (theX < right)
{
byte runFlag = (byte)(run & 0x80);
if (runFlag != 0)
{
run &= 0x7f;
data = ptr[srcOffset++];
}
do
{
if (runFlag == 0)
data = ptr[srcOffset++];
if (left <= theX)
{
mask_ptr.Write(data);
mask_ptr.OffsetY(1);
}
theY++;
if (theY >= height)
{
if (left <= theX)
{
mask_ptr.Offset(1, -height);
}
theY = 0;
theX += 8;
if (theX >= right)
break;
}
} while ((--run) != 0);
run = ptr[srcOffset++];
}
}
void Proc3(Codec1 v1)
{
int y = v1.Y;
_loaded.CostumeReader.BaseStream.Seek(_srcptr, System.IO.SeekOrigin.Begin);
var dst = new PixelNavigator(v1.DestPtr);
var len = v1.RepLen;
uint color = v1.RepColor;
var height = (uint)_height;
var scaleIndexY = _scaleIndexY;
var maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
var mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
bool ehmerde = (len != 0);
do
{
if (!ehmerde)
{
len = _loaded.CostumeReader.ReadByte();
color = (uint)(len >> v1.Shr);
len &= v1.Mask;
if (len == 0)
len = _loaded.CostumeReader.ReadByte();
}
do
{
if (!ehmerde)
{
if (ScaleY == 255 || v1.Scaletable[scaleIndexY++] < ScaleY)
{
var masked = (y < 0 || y >= _h) || (v1.X < 0 || v1.X >= _w) || ((mask.Read() & maskbit) != 0);
if (color != 0 && !masked)
{
byte pcolor;
if ((ShadowMode & 0x20) != 0)
{
pcolor = ShadowTable[dst.Read()];
}
else
{
pcolor = (byte)_palette[color];
if (pcolor == 13 && ShadowTable != null)
pcolor = ShadowTable[dst.Read()];
}
dst.Write(pcolor);
}
dst.OffsetY(1);
mask.OffsetY(1);
y++;
}
if ((--height) == 0)
{
if ((--v1.SkipWidth) == 0)
return;
height = (uint)_height;
y = v1.Y;
scaleIndexY = _scaleIndexY;
if (ScaleX == 255 || v1.Scaletable[_scaleIndexX] < ScaleX)
{
v1.X += v1.ScaleXStep;
if (v1.X < 0 || v1.X >= _w)
return;
maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
v1.DestPtr.OffsetX(v1.ScaleXStep);
}
_scaleIndexX = (byte)(_scaleIndexX + v1.ScaleXStep);
dst = new PixelNavigator(v1.DestPtr);
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
}
}
ehmerde = false;
} while ((--len) != 0);
} while (true);
}
public void DrawBomp()
{
Rect clip;
byte skip_y_bits = 0x80;
byte skip_y_new = 0;
byte[] bomp_scaling_x = new byte[64];
byte[] bomp_scaling_y = new byte[64];
if (X < 0)
{
clip.Left = -X;
}
else
{
clip.Left = 0;
}
if (Y < 0)
{
clip.Top = -Y;
}
else
{
clip.Top = 0;
}
clip.Right = Width;
if (clip.Right > Dst.Width - X)
{
clip.Right = Dst.Width - X;
}
clip.Bottom = Height;
if (clip.Bottom > Dst.Height - Y)
{
clip.Bottom = Dst.Height - Y;
}
var src = Src;
var pn = new PixelNavigator(Dst);
pn.GoTo(X + clip.Left, Y);
var maskbit = ScummHelper.RevBitMask((X + clip.Left) & 7);
PixelNavigator maskPtr = new PixelNavigator();
// Mask against any additionally imposed mask
if (MaskPtr.HasValue)
{
maskPtr = MaskPtr.Value;
maskPtr.GoTo((X + clip.Left) / 8, Y);
}
var scalingYPtr = 0;
// Setup vertical scaling
if (ScaleY != 255)
{
var scaleBottom = SetupBompScale(bomp_scaling_y, Height, ScaleY);
skip_y_new = bomp_scaling_y[scalingYPtr++];
skip_y_bits = 0x80;
if (clip.Bottom > scaleBottom)
{
clip.Bottom = scaleBottom;
}
}
// Setup horizontal scaling
if (ScaleX != 255)
{
var scaleRight = SetupBompScale(bomp_scaling_x, Width, ScaleX);
if (clip.Right > scaleRight)
{
clip.Right = scaleRight;
}
}
var width = clip.Right - clip.Left;
if (width <= 0)
return;
int pos_y = 0;
var line_buffer = new byte[1024];
byte tmp;
using (var br = new BinaryReader(new MemoryStream(src)))
{
// Loop over all lines
while (pos_y < clip.Bottom)
{
br.ReadUInt16();
// Decode a single (bomp encoded) line, reversed if we are in mirror mode
if (Mirror)
BompDecodeLineReverse(br, line_buffer, 0, Width);
else
// Decode a single (bomp encoded) line
BompDecodeLine(br, line_buffer, 0, Width);
// If vertical scaling is enabled, do it
if (ScaleY != 255)
{
// A bit set means we should skip this line...
tmp = (byte)(skip_y_new & skip_y_bits);
// Advance the scale-skip bit mask, if it's 0, get the next scale-skip byte
skip_y_bits /= 2;
if (skip_y_bits == 0)
{
skip_y_bits = 0x80;
skip_y_new = bomp_scaling_y[scalingYPtr++];
}
// Skip the current line if the above check tells us to
if (tmp != 0)
continue;
}
// Perform horizontal scaling
if (ScaleX != 255)
{
BompScaleFuncX(line_buffer, bomp_scaling_x, 0, 0x80, Width);
}
// The first clip.top lines are to be clipped, i.e. not drawn
if (clip.Top > 0)
{
clip.Top--;
}
else
{
// Replace the parts of the line which are masked with the transparency color
if (MaskPtr.HasValue)
BompApplyMask(line_buffer, clip.Left, maskPtr, (byte)maskbit, width, 255);
// Apply custom color map, if available
if (ActorPalette != null)
BompApplyActorPalette(ActorPalette, line_buffer, clip.Left, width);
// Finally, draw the decoded, scaled, masked and recolored line onto
// the target surface, using the specified shadow mode
BompApplyShadow(ShadowMode, ShadowPalette, line_buffer, clip.Left, pn, width, 255);
}
// Advance to the next line
pos_y++;
if (MaskPtr.HasValue)
{
maskPtr.OffsetY(1);
}
pn.OffsetY(1);
}
}
}
void DrawStripBasicV(PixelNavigator navDst, BinaryReader src, int height, bool transpCheck)
{
byte color = src.ReadByte();
uint bits = src.ReadByte();
byte cl = 8;
int inc = -1;
int x = 8;
do
{
int h = height;
do
{
FillBits(ref cl, ref bits, src);
if (!transpCheck || color != transparentColor)
{
WriteRoomColor(navDst, color);
}
navDst.OffsetY(1);
if (!ReadBit(ref cl, ref bits))
{
}
else if (!ReadBit(ref cl, ref bits))
{
FillBits(ref cl, ref bits, src);
color = (byte)(bits & decompMask);
bits >>= decompShr;
cl -= decompShr;
inc = -1;
}
else if (!ReadBit(ref cl, ref bits))
{
color = (byte)(color + inc);
}
else
{
inc = -inc;
color = (byte)(color + inc);
}
} while ((--h) != 0);
navDst.Offset(1, -height);
} while ((--x) != 0);
}
protected override void PrepareDrawBitmap(ImageData img, VirtScreen vs,
Point p, int width, int height,
int stripnr, int numstrip)
{
var ptr = img.Data;
//
// Since V3, all graphics data was encoded in strips, which is very efficient
// for redrawing only parts of the screen. However, V2 is different: here
// the whole graphics are encoded as one big chunk. That makes it rather
// difficult to draw only parts of a room/object. We handle the V2 graphics
// differently from all other (newer) graphic formats for this reason.
//
var table = (_objectMode ? null : _roomStrips);
int left = (stripnr * 8);
int right = left + (numstrip * 8);
PixelNavigator navDst;
var srcOffset = 0;
byte color, data = 0;
int run;
bool dither = false;
byte[] dither_table = new byte[128];
var ditherOffset = 0;
int theX, theY, maxX;
var surface = vs.HasTwoBuffers ? vs.Surfaces[1] : vs.Surfaces[0];
navDst = new PixelNavigator(surface);
navDst.GoTo(p.X * 8, p.Y);
var mask_ptr = GetMaskBuffer(p.X, p.Y, 1);
if (table != null)
{
run = table.run[stripnr];
color = (byte)table.color[stripnr];
srcOffset = table.offsets[stripnr];
theX = left;
maxX = right;
}
else
{
run = 1;
color = 0;
srcOffset = 0;
theX = 0;
maxX = width;
}
// Decode and draw the image data.
Debug.Assert(height <= 128);
for (; theX < maxX; theX++)
{
ditherOffset = 0;
for (theY = 0; theY < height; theY++)
{
if (--run == 0)
{
data = ptr[srcOffset++];
if ((data & 0x80) != 0)
{
run = data & 0x7f;
dither = true;
}
else
{
run = data >> 4;
dither = false;
}
color = RoomPalette[data & 0x0f];
if (run == 0)
{
run = ptr[srcOffset++];
}
}
if (!dither)
{
dither_table[ditherOffset] = color;
}
if (left <= theX && theX < right)
{
navDst.Write(dither_table[ditherOffset++]);
navDst.OffsetY(1);
}
}
if (left <= theX && theX < right)
{
navDst.Offset(1, -height);
}
}
// Draw mask (zplane) data
theY = 0;
if (table != null)
{
srcOffset = table.zoffsets[stripnr];
run = table.zrun[stripnr];
theX = left;
}
else
{
run = ptr[srcOffset++];
theX = 0;
}
while (theX < right)
{
byte runFlag = (byte)(run & 0x80);
if (runFlag != 0)
{
run &= 0x7f;
data = ptr[srcOffset++];
}
do
{
if (runFlag == 0)
{
data = ptr[srcOffset++];
}
if (left <= theX)
{
mask_ptr.Write(data);
mask_ptr.OffsetY(1);
}
theY++;
if (theY >= height)
{
if (left <= theX)
{
mask_ptr.Offset(1, -height);
}
theY = 0;
theX += 8;
if (theX >= right)
{
break;
}
}
} while ((--run) != 0);
run = ptr[srcOffset++];
}
}
void DrawStripV1Mask(PixelNavigator navDst, int stripnr, int width, int height)
{
int maskIdx;
height /= 8;
width /= 8;
for (var y = 0; y < height; y++)
{
if (_objectMode)
maskIdx = objectMap[(y + 2 * height) * width + stripnr] * 8;
else
maskIdx = _v1.MaskMap[y + stripnr * height] * 8;
for (var i = 0; i < 8; i++)
{
byte c = _v1.MaskChar[maskIdx + i];
// V1/V0 masks are inverted compared to what ScummVM expects
navDst.Write((byte)(c ^ 0xFF));
navDst.OffsetY(1);
}
}
}
void DrawStripV1Object(PixelNavigator navDst, int stripnr, int width, int height)
{
int charIdx;
height /= 8;
width /= 8;
for (var y = 0; y < height; y++)
{
_v1.Colors[3] = (byte)(objectMap[(y + height) * width + stripnr] & 7);
charIdx = objectMap[y * width + stripnr] * 8;
for (var i = 0; i < 8; i++)
{
byte c = _v1.CharMap[charIdx + i];
var color = _v1.Colors[(c >> 6) & 3];
navDst.Write(0, color);
navDst.Write(1, color);
color = _v1.Colors[(c >> 4) & 3];
navDst.Write(2, color);
navDst.Write(3, color);
color = _v1.Colors[(c >> 2) & 3];
navDst.Write(4, color);
navDst.Write(5, color);
color = _v1.Colors[(c >> 0) & 3];
navDst.Write(6, color);
navDst.Write(7, color);
navDst.OffsetY(1);
}
}
}
public static void Fill(Surface surface, Rect r, int color)
{
r = new Rect(r.Left, r.Top, r.Right, r.Bottom);
r.Clip(surface.Width, surface.Height);
if (!r.IsValid)
{
return;
}
int width = r.Width;
int lineLen = width;
int height = r.Height;
bool useMemset = true;
var bpp = Surface.GetBytesPerPixel(surface.PixelFormat);
if (bpp == 2)
{
lineLen *= 2;
if ((ushort)color != ((color & 0xff) | (color & 0xff) << 8))
{
useMemset = false;
}
}
else if (bpp == 4)
{
useMemset = false;
}
else if (bpp != 1)
{
throw new InvalidOperationException("Surface::fillRect: bytesPerPixel must be 1, 2, or 4");
}
if (useMemset)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((byte)color, lineLen);
pn.OffsetY(1);
}
}
else
{
if (bpp == 2)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((ushort)color, lineLen);
pn.OffsetX(surface.Width);
}
}
else
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((uint)color, lineLen);
pn.OffsetX(surface.Width / 2);
}
}
}
}
public static void Fill(Surface surface, Rect r, int color)
{
r = new Rect(r.Left, r.Top, r.Right, r.Bottom);
r.Clip(surface.Width, surface.Height);
if (!r.IsValid)
return;
int width = r.Width;
int lineLen = width;
int height = r.Height;
bool useMemset = true;
var bpp = Surface.GetBytesPerPixel(surface.PixelFormat);
if (bpp == 2)
{
lineLen *= 2;
if ((ushort)color != ((color & 0xff) | (color & 0xff) << 8))
useMemset = false;
}
else if (bpp == 4)
{
useMemset = false;
}
else if (bpp != 1)
{
throw new InvalidOperationException("Surface::fillRect: bytesPerPixel must be 1, 2, or 4");
}
if (useMemset)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((byte)color, lineLen);
pn.OffsetY(1);
}
}
else
{
if (bpp == 2)
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((ushort)color, lineLen);
pn.OffsetX(surface.Width);
}
}
else
{
var pn = new PixelNavigator(surface);
pn.GoTo(r.Left, r.Top);
for (int i = 0; i < height; i++)
{
pn.Set((uint)color, lineLen);
pn.OffsetX(surface.Width / 2);
}
}
}
}
static void DecompressMaskImgOr(PixelNavigator dst, Stream src, int height)
{
byte b, c;
while (height != 0)
{
b = (byte)src.ReadByte();
if ((b & 0x80) != 0)
{
b &= 0x7F;
c = (byte)src.ReadByte();
do
{
dst.Write((byte)(dst.Read() | c));
dst.OffsetY(1);
--height;
} while ((--b != 0) && (height != 0));
}
else
{
do
{
dst.Write((byte)(dst.Read() | src.ReadByte()));
dst.OffsetY(1);
--height;
} while ((--b != 0) && (height != 0));
}
}
}
void Proc3Amiga(Codec1 v1)
{
byte len;
int color;
bool masked;
var mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
var dst = new PixelNavigator(v1.DestPtr);
byte height = (byte)_height;
byte width = (byte)_width;
_loaded.CostumeReader.BaseStream.Seek(_srcptr, System.IO.SeekOrigin.Begin);
var maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
var y = v1.Y;
var oldXpos = v1.X;
var oldScaleIndexX = _scaleIndexX;
// Indy4 Amiga always uses the room map to match colors to the currently
// setup palette in the actor code in the original, thus we need to do this
// mapping over here too.
var amigaMap =
(_vm.Game.Platform == Platform.Amiga && _vm.Game.GameId == GameId.Indy4) ? _vm.Gdi.RoomPalette : null;
do
{
len = _loaded.CostumeReader.ReadByte();
color = len >> v1.Shr;
len &= v1.Mask;
if (len == 0)
{
len = _loaded.CostumeReader.ReadByte();
}
do
{
if (ScaleY == 255 || v1.Scaletable[_scaleIndexY] < ScaleY)
{
masked = (y < 0 || y >= _h) || (v1.X < 0 || v1.X >= _w) || ((mask.Read() & maskbit) != 0);
if (color != 0 && !masked)
{
byte pcolor;
if (amigaMap != null)
{
pcolor = amigaMap[_palette[color]];
}
else
{
pcolor = (byte)_palette[color];
}
dst.Write(pcolor);
}
if (ScaleX == 255 || v1.Scaletable[_scaleIndexX] < ScaleX)
{
v1.X += v1.ScaleXStep;
dst.OffsetX(v1.ScaleXStep);
maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
}
_scaleIndexX += (byte)v1.ScaleXStep;
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
}
if (--width == 0)
{
if (--height == 0)
{
return;
}
if (y >= _h)
{
return;
}
if (v1.X != oldXpos)
{
dst.Offset(-(v1.X - oldXpos), 1);
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetY(1);
v1.MaskPtr = mask;
mask.OffsetX(oldXpos / 8);
maskbit = (byte)ScummHelper.RevBitMask(oldXpos & 7);
y++;
}
width = (byte)_width;
v1.X = oldXpos;
_scaleIndexX = oldScaleIndexX;
_scaleIndexY++;
}
} while (--len != 0);
} while (true);
}
protected override void DrawBitsN(Surface s, PixelNavigator dst, IList<byte> src, int srcPos, byte bpp, int drawTop, int width, int height)
{
// if (_sjisCurChar)
// {
// assert(Vm._cjkFont);
// Vm._cjkFont.drawChar(Vm._textSurface, _sjisCurChar, _left * Vm._textSurfaceMultiplier, (_top - Vm._screenTop) * Vm._textSurfaceMultiplier, Vm._townsCharsetColorMap[1], _shadowColor);
// return;
// }
bool scale2x = (Vm.TextSurfaceMultiplier == 2);
dst = new PixelNavigator(Vm.TextSurface);
dst.GoTo(Left * Vm.TextSurfaceMultiplier, (Top - Vm.ScreenTop) * Vm.TextSurfaceMultiplier);
int y, x;
int color;
byte numbits, bits;
int pitch = Vm.TextSurface.Pitch - width;
Debug.Assert(bpp == 1 || bpp == 2 || bpp == 4 || bpp == 8);
bits = src[srcPos++];
numbits = 8;
var cmap = Vm.CharsetColorMap;
var dst2 = new PixelNavigator(dst);
if (Vm.Game.Platform == Platform.FMTowns)
cmap = Vm.TownsCharsetColorMap;
if (scale2x)
{
dst2.OffsetY(1);
pitch <<= 1;
}
for (y = 0; y < height && y + drawTop < Vm.TextSurface.Height; y++)
{
for (x = 0; x < width; x++)
{
color = (bits >> (8 - bpp)) & 0xFF;
if (color != 0 && y + drawTop >= 0)
{
dst.Write(cmap[color]);
if (scale2x)
{
dst.Write(1, dst.Read());
dst2.Write(dst.Read());
dst2.Write(1, dst.Read());
}
}
dst.OffsetX(1);
if (scale2x)
{
dst.OffsetX(1);
dst2.OffsetX(2);
}
bits <<= bpp;
numbits -= bpp;
if (numbits == 0)
{
bits = src[srcPos++];
numbits = 8;
}
}
dst.OffsetX(pitch / dst.BytesByPixel);
dst2.OffsetX(pitch / dst2.BytesByPixel);
}
}
public void DrawChar(PixelNavigator dst, char c, int x, int y, byte color)
{
var width = Math.Min((int)_chars[c].Width, dst.Width - x);
var height = Math.Min((int)_chars[c].Height, dst.Height - y);
var src = UnpackChar(c);
var srcPitch = _chars[c].Width;
var srcPos = 0;
var minX = x < 0 ? -x : 0;
var minY = y < 0 ? -y : 0;
if (height <= 0 || width <= 0)
{
return;
}
if (minY != 0)
{
srcPos += minY * srcPitch;
dst.OffsetY(minY);
}
for (int ty = minY; ty < height; ty++)
{
for (int tx = minX; tx < width; tx++)
{
if (src[srcPos + tx] != _chars[c].Transparency)
{
if (src[srcPos + tx] == 1)
{
dst.Write(tx, color);
}
else
{
dst.Write(tx, src[srcPos + tx]);
}
}
}
srcPos += srcPitch;
dst.OffsetY(1);
}
}
static bool NextRow(ref PixelNavigator navDst, ref int x, ref int y, int height)
{
navDst.OffsetY(1);
if (--y == 0)
{
if ((--x) == 0)
return false;
navDst.Offset(1, -height);
y = height;
}
return true;
}
protected override void DrawBitsN(Surface s, PixelNavigator dst, IList <byte> src, int srcPos, byte bpp, int drawTop, int width, int height)
{
// if (_sjisCurChar)
// {
// assert(Vm._cjkFont);
// Vm._cjkFont.drawChar(Vm._textSurface, _sjisCurChar, _left * Vm._textSurfaceMultiplier, (_top - Vm._screenTop) * Vm._textSurfaceMultiplier, Vm._townsCharsetColorMap[1], _shadowColor);
// return;
// }
bool scale2x = (Vm.TextSurfaceMultiplier == 2);
dst = new PixelNavigator(Vm.TextSurface);
dst.GoTo(Left * Vm.TextSurfaceMultiplier, (Top - Vm.ScreenTop) * Vm.TextSurfaceMultiplier);
int y, x;
int color;
byte numbits, bits;
int pitch = Vm.TextSurface.Pitch - width;
Debug.Assert(bpp == 1 || bpp == 2 || bpp == 4 || bpp == 8);
bits = src[srcPos++];
numbits = 8;
var cmap = Vm.CharsetColorMap;
var dst2 = new PixelNavigator(dst);
if (Vm.Game.Platform == Platform.FMTowns)
{
cmap = Vm.TownsCharsetColorMap;
}
if (scale2x)
{
dst2.OffsetY(1);
pitch <<= 1;
}
for (y = 0; y < height && y + drawTop < Vm.TextSurface.Height; y++)
{
for (x = 0; x < width; x++)
{
color = (bits >> (8 - bpp)) & 0xFF;
if (color != 0 && y + drawTop >= 0)
{
dst.Write(cmap[color]);
if (scale2x)
{
dst.Write(1, dst.Read());
dst2.Write(dst.Read());
dst2.Write(1, dst.Read());
}
}
dst.OffsetX(1);
if (scale2x)
{
dst.OffsetX(1);
dst2.OffsetX(2);
}
bits <<= bpp;
numbits -= bpp;
if (numbits == 0)
{
bits = src[srcPos++];
numbits = 8;
}
}
dst.OffsetX(pitch / dst.BytesByPixel);
dst2.OffsetX(pitch / dst2.BytesByPixel);
}
}
void UnkDecode11(PixelNavigator navDst, BinaryReader src, int height)
{
int i;
int buffer = 0, mask = 128;
int inc = 1;
int color = src.ReadByte();
int x = 8;
do
{
int h = height;
do
{
navDst.Write(RoomPalette[color]);
navDst.OffsetY(1);
for (i = 0; i < 3; i++)
{
if (!ReadBit256(src, ref mask, ref buffer))
break;
}
switch (i)
{
case 1:
inc = -inc;
color -= inc;
break;
case 2:
color -= inc;
break;
case 3:
inc = 1;
color = ReadNBits(src, 8, ref mask, ref buffer);
break;
}
} while ((--h) != 0);
navDst.Offset(1, -height);
} while ((--x) != 0);
}
void Proc3Amiga(Codec1 v1)
{
byte len;
int color;
bool masked;
var mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
var dst = new PixelNavigator(v1.DestPtr);
byte height = (byte)_height;
byte width = (byte)_width;
_loaded.CostumeReader.BaseStream.Seek(_srcptr, System.IO.SeekOrigin.Begin);
var maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
var y = v1.Y;
var oldXpos = v1.X;
var oldScaleIndexX = _scaleIndexX;
// Indy4 Amiga always uses the room map to match colors to the currently
// setup palette in the actor code in the original, thus we need to do this
// mapping over here too.
var amigaMap =
(_vm.Game.Platform == Platform.Amiga && _vm.Game.GameId == GameId.Indy4) ? _vm.Gdi.RoomPalette : null;
do
{
len = _loaded.CostumeReader.ReadByte();
color = len >> v1.Shr;
len &= v1.Mask;
if (len == 0)
len = _loaded.CostumeReader.ReadByte();
do
{
if (ScaleY == 255 || v1.Scaletable[_scaleIndexY] < ScaleY)
{
masked = (y < 0 || y >= _h) || (v1.X < 0 || v1.X >= _w) || ((mask.Read() & maskbit) != 0);
if (color != 0 && !masked)
{
byte pcolor;
if (amigaMap != null)
pcolor = amigaMap[_palette[color]];
else
pcolor = (byte)_palette[color];
dst.Write(pcolor);
}
if (ScaleX == 255 || v1.Scaletable[_scaleIndexX] < ScaleX)
{
v1.X += v1.ScaleXStep;
dst.OffsetX(v1.ScaleXStep);
maskbit = (byte)ScummHelper.RevBitMask(v1.X & 7);
}
_scaleIndexX += (byte)v1.ScaleXStep;
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetX(v1.X / 8);
}
if (--width == 0)
{
if (--height == 0)
return;
if (y >= _h)
return;
if (v1.X != oldXpos)
{
dst.Offset(-(v1.X - oldXpos), 1);
mask = new PixelNavigator(v1.MaskPtr);
mask.OffsetY(1);
v1.MaskPtr = mask;
mask.OffsetX(oldXpos / 8);
maskbit = (byte)ScummHelper.RevBitMask(oldXpos & 7);
y++;
}
width = (byte)_width;
v1.X = oldXpos;
_scaleIndexX = oldScaleIndexX;
_scaleIndexY++;
}
} while (--len != 0);
} while (true);
}
protected void TownsDrawStripToScreen(VirtScreen vs, int dstX, int dstY, int srcX, int srcY, int width, int height)
{
if (width <= 0 || height <= 0)
return;
int m = _textSurfaceMultiplier;
var src1 = new PixelNavigator(vs.Surfaces[0]);
src1.GoTo(vs.XStart + srcX, srcY);
var src2 = new PixelNavigator(_textSurface);
src2.GoTo(srcX * m, (srcY + vs.TopLine - ScreenTop) * m);
var dst1 = new PixelNavigator(_townsScreen.GetLayerPixels(0, dstX, dstY).Value);
var dst2 = new PixelNavigator(_townsScreen.GetLayerPixels(1, dstX * m, dstY * m).Value);
int dp1 = _townsScreen.GetLayerPitch(0) - width * _townsScreen.GetLayerBpp(0);
int dp2 = _townsScreen.GetLayerPitch(1) - width * m * _townsScreen.GetLayerBpp(1);
int sp1 = vs.Pitch - (width * Surface.GetBytesPerPixel(vs.PixelFormat));
int sp2 = _textSurface.Pitch - width * m;
if (vs == MainVirtScreen || Game.GameId == GameId.Indy3 || Game.GameId == GameId.Zak)
{
for (int h = 0; h < height; ++h)
{
if (Surface.GetBytesPerPixel(_gfxManager.PixelFormat) == 2)
{
for (int w = 0; w < width; ++w)
{
dst1.WriteUInt16(_16BitPalette[src1.Read()]);
src1.OffsetX(1);
dst1.OffsetX(1);
}
src1.OffsetX(sp1 / src1.BytesByPixel);
dst1.OffsetX(dp1 / dst1.BytesByPixel);
}
else
{
for (int i = 0; i < width; i++)
{
dst1.Write(src1.Read());
dst1.OffsetX(1);
src1.OffsetX(1);
}
}
for (int sH = 0; sH < m; ++sH)
{
for (int i = 0; i < width * m; i++)
{
dst2.Write(src2.Read());
src2.OffsetX(1);
dst2.OffsetX(1);
}
src2.OffsetX(_textSurface.Width - (width * m));
dst2.OffsetX(dst2.Width - (width * m));
}
}
}
else
{
dst1 = new PixelNavigator(dst2);
for (int h = 0; h < height; ++h)
{
for (int w = 0; w < width; ++w)
{
var t = (src1.Read()) & 0x0f;
src1.OffsetX(1);
for (int i = 0; i < m; i++)
{
dst1.Write((byte)((t << 4) | t));
dst1.OffsetX(1);
}
}
dst1 = new PixelNavigator(dst2);
var src3 = new PixelNavigator(src2);
if (m == 2)
{
dst2.OffsetY(1);
src3.OffsetY(1);
}
for (int w = 0; w < width * m; ++w)
{
dst2.Write((byte)(src3.Read() | dst1.Read() & _townsLayer2Mask[src3.Read()]));
dst2.OffsetX(1);
dst1.Write((byte)(src2.Read() | dst1.Read() & _townsLayer2Mask[src2.Read()]));
src2.OffsetX(1);
src3.OffsetX(1);
dst1.OffsetX(1);
}
src1.OffsetX(sp1 / src1.BytesByPixel);
src2 = new PixelNavigator(src3);
src2.OffsetX(sp2 / src2.BytesByPixel);
dst1 = new PixelNavigator(dst2);
dst1.OffsetX(dp2 / dst1.BytesByPixel);
dst2.OffsetX(dp2 / dst2.BytesByPixel);
}
}
_townsScreen.AddDirtyRect(dstX * m, dstY * m, width * m, height * m);
}
void Akos16Decompress(PixelNavigator dest, int srcPos, int t_width, int t_height, int dir,
int numskip_before, int numskip_after, byte transparency, int maskLeft, int maskTop, int zBuf)
{
var tmp_buf = _akos16.Buffer;
var tmp_pos = 0;
var maskbit = (byte)ScummHelper.RevBitMask(maskLeft & 7);
if (dir < 0)
{
dest.OffsetX(-(t_width - 1));
tmp_pos += (t_width - 1);
}
Akos16SetupBitReader(srcPos);
if (numskip_before != 0)
{
Akos16SkipData(numskip_before);
}
var maskptr = _vm.GetMaskBuffer(maskLeft, maskTop, zBuf);
Debug.Assert(t_height > 0);
Debug.Assert(t_width > 0);
while ((t_height--) != 0)
{
Akos16DecodeLine(tmp_buf, tmp_pos, t_width, dir);
BompDrawData.BompApplyMask(_akos16.Buffer, 0, maskptr, maskbit, t_width, transparency);
BompDrawData.BompApplyShadow(ShadowMode, ShadowTable, _akos16.Buffer, 0, dest, t_width, transparency);
if (numskip_after != 0)
{
Akos16SkipData(numskip_after);
}
dest.OffsetY(1);
maskptr.OffsetY(1);
}
}
protected override void DrawBits1(Surface dest, int x, int y, BinaryReader src, int drawTop, int width, int height)
{
if (_sjisCurChar != 0)
{
// Debug.Assert(Vm._cjkFont);
// Vm._cjkFont.drawChar(dest, _sjisCurChar, x, y, _color, _shadowColor);
return;
}
bool scale2x = ((dest == Vm.TextSurface) && (Vm.TextSurfaceMultiplier == 2) /*&& !(_sjisCurChar >= 256 && Vm.UseCJKMode)*/);
byte bits = 0;
var col = Color;
var bpp = Surface.GetBytesPerPixel(dest.PixelFormat);
int pitch = dest.Pitch - width * bpp;
var dst = new PixelNavigator(dest);
dst.GoTo(x, y);
var dst2 = new PixelNavigator(dst);
dst2.OffsetY(1);
var dst3 = new PixelNavigator(dst2);
var dst4 = new PixelNavigator(dst2);
if (scale2x)
{
dst3.OffsetY(1);
dst4.OffsetY(1);
pitch <<= 1;
}
for (y = 0; y < height && y + drawTop < dest.Height; y++)
{
for (x = 0; x < width; x++)
{
if ((x % 8) == 0)
bits = src.ReadByte();
if (((bits & ScummHelper.RevBitMask(x % 8)) != 0) && y + drawTop >= 0)
{
if (bpp == 2)
{
if (_enableShadow)
{
dst.WriteUInt16(2, Vm._16BitPalette[_shadowColor]);
dst.WriteUInt16(2 + dest.Pitch, Vm._16BitPalette[_shadowColor]);
}
dst.WriteUInt16(Vm._16BitPalette[Color]);
}
else
{
if (_enableShadow)
{
if (scale2x)
{
dst.Write(2, _shadowColor);
dst.Write(3, _shadowColor);
dst2.Write(2, _shadowColor);
dst2.Write(3, _shadowColor);
dst3.Write(0, _shadowColor);
dst3.Write(1, _shadowColor);
dst4.Write(0, _shadowColor);
dst4.Write(0, _shadowColor);
}
else
{
dst2.Write(_shadowColor);
dst.Write(1, _shadowColor);
}
}
dst.Write(col);
if (scale2x)
{
dst.Write(1, col);
dst2.Write(0, col);
dst2.Write(1, col);
}
}
}
dst.OffsetX(1);
dst2.OffsetX(1);
if (scale2x)
{
dst.OffsetX(1);
dst2.OffsetX(1);
dst3.OffsetX(1);
dst4.OffsetX(1);
}
}
dst.OffsetX(pitch / dst.BytesByPixel);
dst2.OffsetX(pitch / dst2.BytesByPixel);
dst3.OffsetX(pitch / dst3.BytesByPixel);
dst4.OffsetX(pitch / dst4.BytesByPixel);
}
}
public void DrawBomp()
{
Rect clip;
byte skip_y_bits = 0x80;
byte skip_y_new = 0;
byte[] bomp_scaling_x = new byte[64];
byte[] bomp_scaling_y = new byte[64];
if (X < 0)
{
clip.Left = -X;
}
else
{
clip.Left = 0;
}
if (Y < 0)
{
clip.Top = -Y;
}
else
{
clip.Top = 0;
}
clip.Right = Width;
if (clip.Right > Dst.Width - X)
{
clip.Right = Dst.Width - X;
}
clip.Bottom = Height;
if (clip.Bottom > Dst.Height - Y)
{
clip.Bottom = Dst.Height - Y;
}
var src = Src;
var pn = new PixelNavigator(Dst);
pn.GoTo(X + clip.Left, Y);
var maskbit = ScummHelper.RevBitMask((X + clip.Left) & 7);
PixelNavigator maskPtr = new PixelNavigator();
// Mask against any additionally imposed mask
if (MaskPtr.HasValue)
{
maskPtr = MaskPtr.Value;
maskPtr.GoTo((X + clip.Left) / 8, Y);
}
var scalingYPtr = 0;
// Setup vertical scaling
if (ScaleY != 255)
{
var scaleBottom = SetupBompScale(bomp_scaling_y, Height, ScaleY);
skip_y_new = bomp_scaling_y[scalingYPtr++];
skip_y_bits = 0x80;
if (clip.Bottom > scaleBottom)
{
clip.Bottom = scaleBottom;
}
}
// Setup horizontal scaling
if (ScaleX != 255)
{
var scaleRight = SetupBompScale(bomp_scaling_x, Width, ScaleX);
if (clip.Right > scaleRight)
{
clip.Right = scaleRight;
}
}
var width = clip.Right - clip.Left;
if (width <= 0)
{
return;
}
int pos_y = 0;
var line_buffer = new byte[1024];
byte tmp;
using (var br = new BinaryReader(new MemoryStream(src)))
{
// Loop over all lines
while (pos_y < clip.Bottom)
{
br.ReadUInt16();
// Decode a single (bomp encoded) line, reversed if we are in mirror mode
if (Mirror)
{
BompDecodeLineReverse(br, line_buffer, 0, Width);
}
else
{
// Decode a single (bomp encoded) line
BompDecodeLine(br, line_buffer, 0, Width);
}
// If vertical scaling is enabled, do it
if (ScaleY != 255)
{
// A bit set means we should skip this line...
tmp = (byte)(skip_y_new & skip_y_bits);
// Advance the scale-skip bit mask, if it's 0, get the next scale-skip byte
skip_y_bits /= 2;
if (skip_y_bits == 0)
{
skip_y_bits = 0x80;
skip_y_new = bomp_scaling_y[scalingYPtr++];
}
// Skip the current line if the above check tells us to
if (tmp != 0)
{
continue;
}
}
// Perform horizontal scaling
if (ScaleX != 255)
{
BompScaleFuncX(line_buffer, bomp_scaling_x, 0, 0x80, Width);
}
// The first clip.top lines are to be clipped, i.e. not drawn
if (clip.Top > 0)
{
clip.Top--;
}
else
{
// Replace the parts of the line which are masked with the transparency color
if (MaskPtr.HasValue)
{
BompApplyMask(line_buffer, clip.Left, maskPtr, (byte)maskbit, width, 255);
}
// Apply custom color map, if available
if (ActorPalette != null)
{
BompApplyActorPalette(ActorPalette, line_buffer, clip.Left, width);
}
// Finally, draw the decoded, scaled, masked and recolored line onto
// the target surface, using the specified shadow mode
BompApplyShadow(ShadowMode, ShadowPalette, line_buffer, clip.Left, pn, width, 255);
}
// Advance to the next line
pos_y++;
if (MaskPtr.HasValue)
{
maskPtr.OffsetY(1);
}
pn.OffsetY(1);
}
}
}
static void DecompressMaskImg(PixelNavigator dst, Stream src, int height)
{
while (height != 0)
{
var b = (byte)src.ReadByte();
if ((b & 0x80) != 0)
{
b &= 0x7F;
var c = (byte)src.ReadByte();
do
{
dst.Write(c);
dst.OffsetY(1);
--height;
} while (--b != 0 && height != 0);
}
else
{
do
{
dst.Write((byte)src.ReadByte());
dst.OffsetY(1);
--height;
} while (--b != 0 && height != 0);
}
}
}
protected virtual void DrawBits1(Surface surface, int x, int y, BinaryReader src, int drawTop, int width, int height)
{
var dst = new PixelNavigator(surface);
dst.GoTo(x, y);
byte bits = 0;
byte col = Color;
//int pitch = surface.Pitch - width * surface.BytesPerPixel;
var dst2 = new PixelNavigator(dst);
dst2.OffsetY(1);
for (y = 0; y < height && y + drawTop < surface.Height; y++)
{
for (x = 0; x < width; x++)
{
if ((x % 8) == 0)
bits = src.ReadByte();
if ((bits & ScummHelper.RevBitMask(x % 8)) != 0 && y + drawTop >= 0)
{
if (_shadowMode)
{
dst.OffsetX(1);
dst.Write(_shadowColor);
dst2.Write(_shadowColor);
dst2.OffsetX(1);
dst2.Write(_shadowColor);
}
dst.Write(col);
}
dst.OffsetX(1);
dst2.OffsetX(1);
}
dst.OffsetX(surface.Width - width);
dst2.OffsetX(surface.Width - width);
}
}
void DrawStripV1Background(PixelNavigator navDst, int stripnr, int height)
{
int charIdx;
height /= 8;
for (int y = 0; y < height; y++)
{
_v1.Colors[3] = (byte)(_v1.ColorMap[y + stripnr * height] & 7);
// Check for room color change in V1 zak
if (RoomPalette[0] == 255)
{
_v1.Colors[2] = RoomPalette[2];
_v1.Colors[1] = RoomPalette[1];
}
charIdx = _v1.PicMap[y + stripnr * height] * 8;
for (int i = 0; i < 8; i++)
{
byte c = _v1.CharMap[charIdx + i];
var color = _v1.Colors[(c >> 6) & 3];
navDst.Write(0, color);
navDst.Write(1, color);
color = _v1.Colors[(c >> 4) & 3];
navDst.Write(2, color);
navDst.Write(3, color);
color = _v1.Colors[(c >> 2) & 3];
navDst.Write(4, color);
navDst.Write(5, color);
color = _v1.Colors[(c >> 0) & 3];
navDst.Write(6, color);
navDst.Write(7, color);
navDst.OffsetY(1);
}
}
}