protected override void PrepareDrawBitmap(ImageData img, VirtScreen vs,
Point p, int width, int height,
int stripnr, int numstrip)
{
if (_objectMode)
{
var imgData = (ImageData1)img;
objectMap = imgData.ObjectMap;
}
}
public virtual ImageData Clone()
{
var data = new ImageData{ IsBomp = IsBomp };
data.Data = new byte[Data.Length];
Array.Copy(Data, data.Data, Data.Length);
foreach (var zplane in ZPlanes)
{
data.ZPlanes.Add(zplane.Clone());
}
return data;
}
byte[] GrabPixels(ImageData im, int w, int h)
{
// Backup the screen content
var backup = (byte[])MainVirtScreen.Surfaces[0].Pixels.Clone();
// Do some drawing
DrawBox(0, 0, w - 1, h - 1, 0xFF);
MainVirtScreen.HasTwoBuffers = false;
Gdi.IsZBufferEnabled = false;
Gdi.DrawBitmap(im, MainVirtScreen, _screenStartStrip, 0, w, h, 0, w / 8, MainVirtScreen.Width, DrawBitmaps.None);
MainVirtScreen.HasTwoBuffers = true;
Gdi.IsZBufferEnabled = true;
// Grab the data we just drew and setup the cursor with it
var pixels = Capture(MainVirtScreen, MainVirtScreen.XStart, 0, w, h);
// Restore the screen content
Array.Copy(backup, MainVirtScreen.Surfaces[0].Pixels, backup.Length);
return pixels;
}
ImageData ReadImage(Stream stream, int numStrips)
{
var br = new BinaryReader(stream);
var img = new ImageData();
var size = br.ReadInt32();
br.BaseStream.Seek(-4, SeekOrigin.Current);
if (size != 0)
{
img.Data = br.ReadBytes(size + 2);
br.BaseStream.Seek(-2, SeekOrigin.Current);
size = br.ReadUInt16();
if (br.BaseStream.Position == br.BaseStream.Length)
{
size = 0;
}
}
while (size != 0 && img.ZPlanes.Count < 3)
{
var zPlane = ReadZPlane(br, size, numStrips);
img.ZPlanes.Add(zPlane);
size = 0;
br.BaseStream.Seek(-2, SeekOrigin.Current);
if ((br.BaseStream.Position + 2) < br.BaseStream.Length)
{
size = br.ReadUInt16();
}
}
return img;
}
protected ImageData ReadImage(long size, int numStrips)
{
var img = new ImageData();
var it = CreateChunkIterator(size);
while (it.MoveNext())
{
if (it.Current.Tag == "SMAP")
{
img.Data = _reader.ReadBytes((int)(it.Current.Size));
}
else if (it.Current.Tag.StartsWith("ZP", StringComparison.Ordinal))
{
var zpNum = int.Parse(it.Current.Tag.Substring(2), System.Globalization.NumberStyles.HexNumber);
ZPlane zplane;
using (var ms = new MemoryStream(_reader.ReadBytes((int)(it.Current.Size))))
{
var br = new BinaryReader(ms);
zplane = ReadZPlane(br, (int)(it.Current.Size), numStrips);
}
img.ZPlanes.Add(zplane);
}
else if (it.Current.Tag == "BOMP")
{
img = ReadBomp(it.Current.Size - 8);
}
else
{
UnknownChunk(it.Current);
}
}
return img;
}
protected IList<ImageData> ReadImages(long size)
{
var images = new List<ImageData>();
var it = CreateChunkIterator(size);
while (it.MoveNext())
{
if (it.Current.Tag == "WRAP")
{
it = CreateChunkIterator(it.Current.Size);
}
else if (it.Current.Tag == "OFFS")
{
// skip it
}
else if (it.Current.Tag == "BOMP")
{
var img = ReadBomp(it.Current.Size - 8);
images.Add(img);
}
else if (it.Current.Tag == "OBIM")
{
// Object Image
var obj = ReadObjectImages(it.Current.Size - 8);
images.AddRange(obj.Images);
}
else if (it.Current.Tag == "SMAP")
{
var img = new ImageData();
img.Data = _reader.ReadBytes((int)(it.Current.Size - 8));
images.Add(img);
}
else
{
UnknownChunk(it.Current);
}
}
return images;
}
protected virtual ImageData ReadBomp(long size)
{
var id = _reader.ReadUInt16();
var width = _reader.ReadUInt16();
var height = _reader.ReadUInt16();
var padding = _reader.ReadUInt32();
var img = new ImageData();
img.Data = _reader.ReadBytes((int)(size - 10));
img.IsBomp = true;
return img;
}
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++];
}
}
public Room()
{
Boxes = new List<Box>();
Objects = new List<ObjectData>();
BoxMatrix = new List<byte>();
EntryScript = new ScriptData();
ExitScript = new ScriptData();
LocalScripts = new ScriptData[1024];
TransparentColor = 255;
Scales = new ScaleSlot[0];
ColorCycle = new ColorCycle[16];
for (int i = 0; i < ColorCycle.Length; i++)
{
ColorCycle[i] = new ColorCycle();
}
Image = new ImageData();
Palettes = new List<Palette>();
Palettes.Add(new Palette());
}
protected override ImageData ReadBomp(long size)
{
var width = _reader.ReadUInt32();
var height = _reader.ReadUInt32();
var img = new ImageData();
img.Data = _reader.ReadBytes((int)(size - 8));
img.IsBomp = true;
return img;
}
protected virtual void PrepareDrawBitmap(ImageData img, VirtScreen vs,
Point p, int width, int height,
int stripnr, int numstrip)
{
}
public void DrawBitmap(ImageData img, VirtScreen vs, Point p, int width, int height, int stripnr, int numstrip, int roomWidth, DrawBitmaps flags, bool isLightOn)
{
var x = p.X;
var y = p.Y;
if ((_vm.TownsPaletteFlags & 2) != 0)
{
int cx = (x - _vm.ScreenStartStrip) << 3;
Gdi.Fill(_vm.TextSurface,
new Rect(cx * _vm.TextSurfaceMultiplier, y * _vm.TextSurfaceMultiplier,
(cx + width - 1) * _vm.TextSurfaceMultiplier, (y + height - 1) * _vm.TextSurfaceMultiplier), 0);
}
_objectMode = flags.HasFlag(DrawBitmaps.ObjectMode);
PrepareDrawBitmap(img, vs, p, width, height, stripnr, numstrip);
int sx = x - vs.XStart / 8;
if (sx < 0)
{
numstrip -= -sx;
x += -sx;
stripnr += -sx;
sx = 0;
}
// Compute the number of strips we have to iterate over.
// TODO/FIXME: The computation of its initial value looks very fishy.
// It was added as a kind of hack to fix some corner cases, but it compares
// the room width to the virtual screen width; but the former should always
// be bigger than the latter (except for MM NES, maybe)... strange
int limit = Math.Max(roomWidth, vs.Width) / 8 - x;
if (limit > numstrip)
limit = numstrip;
if (limit > NumStrips - sx)
limit = NumStrips - sx;
for (int k = 0; k < limit; ++k, ++stripnr, ++sx, ++x)
{
if (y < vs.TDirty[sx])
vs.TDirty[sx] = y;
if (y + height > vs.BDirty[sx])
vs.BDirty[sx] = y + height;
// In the case of a double buffered virtual screen, we draw to
// the backbuffer, otherwise to the primary surface memory.
var surface = vs.HasTwoBuffers ? vs.Surfaces[1] : vs.Surfaces[0];
var navDst = new PixelNavigator(surface);
navDst.GoTo(x * 8, y);
bool transpStrip;
using (var smapReader = new BinaryReader(new MemoryStream(img.Data)))
{
transpStrip = DrawStrip(navDst, width, height, stripnr, smapReader);
}
// COMI and HE games only uses flag value
if (game.Version == 8)
transpStrip = true;
if (vs.HasTwoBuffers)
{
var navFrontBuf = new PixelNavigator(vs.Surfaces[0]);
navFrontBuf.GoTo(x * 8, y);
if (isLightOn)
Copy8Col(navFrontBuf, navDst, height);
else
Clear8Col(navFrontBuf, height);
}
DecodeMask(x, y, width, height, stripnr, img.ZPlanes, transpStrip, flags);
}
}
public void DrawBitmap(ImageData img, VirtScreen vs, int x, int y, int width, int height, int stripnr, int numstrip, int roomWidth, DrawBitmaps flags)
{
// Check whether lights are turned on or not
var lightsOn = _vm.IsLightOn();
DrawBitmap(img, vs, new Point(x, y), width, height, stripnr, numstrip, roomWidth, flags, lightsOn);
}
