int MainRoutine(int xmoveCur, int ymoveCur)
{
int i, skip = 0;
byte drawFlag = 1;
bool use_scaling;
byte startScaleIndexX;
int ex1, ex2;
var rect = new Rect();
int step;
var v1 = new Codec1();
const int ScaletableSize = 128;
bool newAmiCost = (_vm.Game.Version == 5) && (_vm.Game.Platform == Platform.Amiga);
v1.Scaletable = smallCostumeScaleTable;
if (_loaded.NumColors == 32)
{
v1.Mask = 7;
v1.Shr = 3;
}
else
{
v1.Mask = 15;
v1.Shr = 4;
}
_loaded.CostumeReader.BaseStream.Seek(_srcptr, System.IO.SeekOrigin.Begin);
switch (_loaded.Format)
{
case 0x60:
case 0x61:
// This format is used e.g. in the Sam&Max intro
ex1 = _loaded.CostumeReader.ReadByte();
ex2 = _loaded.CostumeReader.ReadByte();
_srcptr += 2;
if (ex1 != 0xFF || ex2 != 0xFF)
{
_loaded.CostumeReader.BaseStream.Seek(_loaded.FrameOffsets + ex1 * 2, System.IO.SeekOrigin.Begin);
ex1 = _loaded.CostumeReader.ReadUInt16();
_loaded.CostumeReader.BaseStream.Seek(_loaded.BasePtr + ex1 + ex2 * 2, System.IO.SeekOrigin.Begin);
_srcptr = _loaded.BasePtr + _loaded.CostumeReader.ReadUInt16() + 14;
}
break;
}
use_scaling = (ScaleX != 0xFF) || (ScaleY != 0xFF);
v1.X = ActorX;
v1.Y = ActorY;
if (use_scaling)
{
/* Scale direction */
v1.ScaleXStep = -1;
if (xmoveCur < 0)
{
xmoveCur = -xmoveCur;
v1.ScaleXStep = 1;
}
// It's possible that the scale indexes will overflow and wrap
// around to zero, so it's important that we use the same
// method of accessing it both when calculating the size of the
// scaled costume, and when drawing it. See bug #1519667.
if (_mirror)
{
/* Adjust X position */
startScaleIndexX = _scaleIndexX = (byte)(ScaletableSize - xmoveCur);
for (i = 0; i < xmoveCur; i++)
{
if (v1.Scaletable[_scaleIndexX++] < ScaleX)
v1.X -= v1.ScaleXStep;
}
rect.Left = rect.Right = v1.X;
_scaleIndexX = startScaleIndexX;
for (i = 0; i < _width; i++)
{
if (rect.Right < 0)
{
skip++;
startScaleIndexX = _scaleIndexX;
}
if (v1.Scaletable[_scaleIndexX++] < ScaleX)
rect.Right++;
}
}
else
{
/* No mirror */
/* Adjust X position */
startScaleIndexX = _scaleIndexX = (byte)(xmoveCur + ScaletableSize);
for (i = 0; i < xmoveCur; i++)
{
if (v1.Scaletable[_scaleIndexX--] < ScaleX)
v1.X += v1.ScaleXStep;
}
rect.Left = rect.Right = v1.X;
_scaleIndexX = startScaleIndexX;
for (i = 0; i < _width; i++)
{
if (rect.Left >= _w)
{
startScaleIndexX = _scaleIndexX;
skip++;
}
if (v1.Scaletable[_scaleIndexX--] < ScaleX)
rect.Left--;
}
}
_scaleIndexX = startScaleIndexX;
if (skip != 0)
skip--;
step = -1;
if (ymoveCur < 0)
{
ymoveCur = -ymoveCur;
step = 1;
}
_scaleIndexY = (byte)(ScaletableSize - ymoveCur);
for (i = 0; i < ymoveCur; i++)
{
if (v1.Scaletable[_scaleIndexY++] < ScaleY)
v1.Y -= step;
}
rect.Top = rect.Bottom = v1.Y;
_scaleIndexY = (byte)(ScaletableSize - ymoveCur);
for (i = 0; i < _height; i++)
{
if (v1.Scaletable[_scaleIndexY++] < ScaleY)
rect.Bottom++;
}
_scaleIndexY = (byte)(ScaletableSize - ymoveCur);
}
else
{
if (!_mirror)
xmoveCur = -xmoveCur;
v1.X += xmoveCur;
v1.Y += ymoveCur;
if (_mirror)
{
rect.Left = v1.X;
rect.Right = v1.X + _width;
}
else
{
rect.Left = v1.X - _width;
rect.Right = v1.X;
}
rect.Top = v1.Y;
rect.Bottom = rect.Top + _height;
}
v1.SkipWidth = _width;
v1.ScaleXStep = _mirror ? 1 : -1;
if (_vm.Game.Version == 1)
// V1 games uses 8 x 8 pixels for actors
_vm.MarkRectAsDirty(_vm.MainVirtScreen, rect.Left, rect.Right + 8, rect.Top, rect.Bottom, ActorID);
else
_vm.MarkRectAsDirty(_vm.MainVirtScreen, rect.Left, rect.Right + 1, rect.Top, rect.Bottom, ActorID);
if (rect.Top >= _h || rect.Bottom <= 0)
return 0;
if (rect.Left >= _w || rect.Right <= 0)
return 0;
v1.RepLen = 0;
if (_mirror)
{
if (!use_scaling)
skip = -v1.X;
if (skip > 0)
{
if (!newAmiCost && _loaded.Format != 0x57)
{
v1.SkipWidth -= skip;
Codec1IgnorePakCols(v1, skip);
v1.X = 0;
}
}
else
{
skip = rect.Right - _w;
if (skip <= 0)
{
drawFlag = 2;
}
else
{
v1.SkipWidth -= skip;
}
}
}
else
{
if (!use_scaling)
skip = rect.Right - _w;
if (skip > 0)
{
if (!newAmiCost && _loaded.Format != 0x57)
{
v1.SkipWidth -= skip;
Codec1IgnorePakCols(v1, skip);
v1.X = _w - 1;
}
}
else
{
// V1 games uses 8 x 8 pixels for actors
if (_loaded.Format == 0x57)
skip = -8 - rect.Left;
else
skip = -1 - rect.Left;
if (skip <= 0)
drawFlag = 2;
else
v1.SkipWidth -= skip;
}
}
if (v1.SkipWidth <= 0)
return 0;
if (rect.Left < 0)
rect.Left = 0;
if (rect.Top < 0)
rect.Top = 0;
if (rect.Top > _h)
rect.Top = _h;
if (rect.Bottom > _h)
rect.Bottom = _h;
if (DrawTop > rect.Top)
DrawTop = rect.Top;
if (DrawBottom < rect.Bottom)
DrawBottom = rect.Bottom;
if (_height + rect.Top >= 256)
{
return 2;
}
_pixelsNavigator = new PixelNavigator(startNav);
_pixelsNavigator.Offset(v1.X, v1.Y);
v1.DestPtr = _pixelsNavigator;
v1.MaskPtr = _vm.GetMaskBuffer(0, v1.Y, ZBuffer);
if (_loaded.Format == 0x57)
{
// The v1 costume renderer needs the actor number, which is
// the same thing as the costume renderer's _actorID.
ProcC64(v1, ActorID);
}
else if (newAmiCost)
{
Proc3Amiga(v1);
}
else
{
Proc3(v1);
}
return drawFlag;
}
protected void RestoreBackground(Rect rect, byte backColor = 0)
{
VirtScreen vs;
if (rect.Top < 0)
rect.Top = 0;
if (rect.Left >= rect.Right || rect.Top >= rect.Bottom)
return;
if ((vs = FindVirtScreen(rect.Top)) == null)
return;
if (rect.Left > vs.Width)
return;
// Convert 'rect' to local (virtual screen) coordinates
rect.Top -= vs.TopLine;
rect.Bottom -= vs.TopLine;
rect.Clip(vs.Width, vs.Height);
int height = rect.Height;
int width = rect.Width;
if (_game.Platform == Platform.FMTowns && Game.GameId == GameId.Monkey1 && vs == VerbVirtScreen && rect.Bottom <= 154)
rect.Right = 319;
MarkRectAsDirty(vs, rect.Left, rect.Right, rect.Top, rect.Bottom, Gdi.UsageBitRestored);
var screenBuf = new PixelNavigator(vs.Surfaces[0]);
screenBuf.GoTo(vs.XStart + rect.Left, rect.Top);
if (height == 0)
return;
if (vs.HasTwoBuffers && _currentRoom != 0 && IsLightOn())
{
var back = new PixelNavigator(vs.Surfaces[1]);
back.GoTo(vs.XStart + rect.Left, rect.Top);
Gdi.Blit(screenBuf, back, width, height);
if (vs == MainVirtScreen && _charset.HasMask)
{
if (_game.Platform == Platform.FMTowns)
{
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left * _textSurfaceMultiplier, (rect.Top + vs.TopLine) * _textSurfaceMultiplier);
Gdi.Fill(mask, 0, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
else
{
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left, rect.Top - ScreenTop);
Gdi.Fill(mask, CharsetMaskTransparency, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
}
}
else
{
if (Game.Platform == Platform.FMTowns)
{
backColor |= (byte)(backColor << 4);
var mask = new PixelNavigator(_textSurface);
mask.GoTo(rect.Left * _textSurfaceMultiplier, (rect.Top + vs.TopLine) * _textSurfaceMultiplier);
Gdi.Fill(mask, backColor, width * _textSurfaceMultiplier, height * _textSurfaceMultiplier);
}
if (Game.Features.HasFlag(GameFeatures.Is16BitColor))
Gdi.Fill(screenBuf, _16BitPalette[backColor], width, height);
else
Gdi.Fill(screenBuf, backColor, width, height);
}
}
internal void MarkRectAsDirty(VirtScreen vs, Rect r, int dirtybit = 0)
{
MarkRectAsDirty(vs, r.Left, r.Right, r.Top, r.Bottom, dirtybit);
}
void TownsSetupPalCycleField(int x1, int y1, int x2, int y2)
{
if (_numCyclRects >= 10)
return;
_cyclRects[_numCyclRects] = new Rect(x1, y1, x2, y2);
_numCyclRects++;
TownsPaletteFlags |= 1;
}
public void AddDirtyRect(int x, int y, int w, int h)
{
if (w <= 0 || h <= 0 || _numDirtyRects > DIRTY_RECTS_MAX)
return;
if (_numDirtyRects == DIRTY_RECTS_MAX)
{
// full redraw
_dirtyRects.Clear();
_dirtyRects.Add(new Rect(_width - 1, _height - 1));
_numDirtyRects++;
return;
}
int x2 = x + w - 1;
int y2 = y + h - 1;
Debug.Assert(x >= 0 && y >= 0 && x2 <= _width && y2 <= _height);
bool skip = false;
for (int i = 0; i < _dirtyRects.Count; i++)
{
var r = _dirtyRects[i];
// Try to merge new rect with an existing rect (only once, since trying to merge
// more than one overlapping rect would be causing more overhead than doing any good).
if (x > r.Left && x < r.Right && y > r.Top && y < r.Bottom)
{
x = r.Left;
y = r.Top;
skip = true;
}
if (x2 > r.Left && x2 < r.Right && y > r.Top && y < r.Bottom)
{
x2 = r.Right;
y = r.Top;
skip = true;
}
if (x2 > r.Left && x2 < r.Right && y2 > r.Top && y2 < r.Bottom)
{
x2 = r.Right;
y2 = r.Bottom;
skip = true;
}
if (x > r.Left && x < r.Right && y2 > r.Top && y2 < r.Bottom)
{
x = r.Left;
y2 = r.Bottom;
skip = true;
}
if (skip)
{
_dirtyRects[i] = new Rect(x, y, x2, y2);
break;
}
}
if (!skip)
{
_dirtyRects.Add(new Rect(x, y, x2, y2));
_numDirtyRects++;
}
}
void MarkRectAsDirty(Rect rect)
{
rect.Left -= _vm.MainVirtScreen.XStart & 7;
rect.Right -= _vm.MainVirtScreen.XStart & 7;
_vm.MarkRectAsDirty(_vm.MainVirtScreen, rect, ActorID);
}
public void SetFocusRectangle(Rect rect)
{
// TODO: _system.SetFocusRectangle(rect);
//_system.SetFocusRectangle(rect);
}
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);
}
}
}
}