void RestoreCharsetBg()
{
_nextLeft = _string[0].Position.X;
_nextTop = _string[0].Position.Y + ScreenTop;
if (_charset.HasMask)
{
_charset.HasMask = false;
_charset.Str.Left = -1;
_charset.Left = -1;
// Restore background on the whole text area. This code is based on
// restoreBackground(), but was changed to only restore those parts which are
// currently covered by the charset mask.
var vs = _charset.TextScreen;
if (vs.Height == 0)
{
return;
}
MarkRectAsDirty(vs, 0, vs.Width, 0, vs.Height, Gdi.UsageBitRestored);
if (vs.HasTwoBuffers && _currentRoom != 0 && IsLightOn())
{
if (vs != MainVirtScreen)
{
// Restore from back buffer
var screenBufNav = new PixelNavigator(vs.Surfaces[0]);
screenBufNav.OffsetX(vs.XStart);
var backNav = new PixelNavigator(vs.Surfaces[1]);
backNav.OffsetX(vs.XStart);
Gdi.Blit(screenBufNav, backNav, vs.Width, vs.Height);
}
}
else
{
// Clear area
var screenBuf = vs.Surfaces[0].Pixels;
Array.Clear(screenBuf, 0, screenBuf.Length);
}
if (vs.HasTwoBuffers)
{
// Clean out the charset mask
ClearTextSurface();
}
}
}
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);
}
}
}
void DrawFlashlight()
{
int i, j, x, y;
var vs = MainVirtScreen;
// Remove the flash light first if it was previously drawn
if (_flashlight.IsDrawn)
{
MarkRectAsDirty(MainVirtScreen, _flashlight.X, _flashlight.X + _flashlight.W,
_flashlight.Y, _flashlight.Y + _flashlight.H, Gdi.UsageBitDirty);
if (_flashlight.PixelNavigator.HasValue)
{
Gdi.Fill(_flashlight.PixelNavigator.Value, 0, _flashlight.W, _flashlight.H);
}
_flashlight.IsDrawn = false;
}
if (_flashlight.XStrips == 0 || _flashlight.YStrips == 0)
{
return;
}
// Calculate the area of the flashlight
if (Game.GameId == GameId.Zak || Game.GameId == GameId.Maniac)
{
x = _mousePos.X + vs.XStart;
y = _mousePos.Y - vs.TopLine;
}
else
{
var a = Actors[Variables[VariableEgo.Value]];
x = a.Position.X;
y = a.Position.Y;
}
_flashlight.W = _flashlight.XStrips * 8;
_flashlight.H = _flashlight.YStrips * 8;
_flashlight.X = x - _flashlight.W / 2 - _screenStartStrip * 8;
_flashlight.Y = y - _flashlight.H / 2;
if (Game.GameId == GameId.Loom)
{
_flashlight.Y -= 12;
}
// Clip the flashlight at the borders
if (_flashlight.X < 0)
{
_flashlight.X = 0;
}
else if (_flashlight.X + _flashlight.W > Gdi.NumStrips * 8)
{
_flashlight.X = Gdi.NumStrips * 8 - _flashlight.W;
}
if (_flashlight.Y < 0)
{
_flashlight.Y = 0;
}
else if (_flashlight.Y + _flashlight.H > vs.Height)
{
_flashlight.Y = vs.Height - _flashlight.H;
}
// Redraw any actors "under" the flashlight
for (i = _flashlight.X / 8; i < (_flashlight.X + _flashlight.W) / 8; i++)
{
Debug.Assert(0 <= i && i < Gdi.NumStrips);
Gdi.SetGfxUsageBit(_screenStartStrip + i, Gdi.UsageBitDirty);
vs.TDirty[i] = 0;
vs.BDirty[i] = vs.Height;
}
var pn = new PixelNavigator(vs.Surfaces[0]);
pn.GoTo(_flashlight.X + vs.XStart, _flashlight.Y);
pn = new PixelNavigator(pn);
_flashlight.PixelNavigator = pn;
var bgbak = new PixelNavigator(vs.Surfaces[1]);
bgbak.GoTo(_flashlight.X + vs.XStart, _flashlight.Y);
Gdi.Blit(pn, bgbak, _flashlight.W, _flashlight.H);
// Round the corners. To do so, we simply hard-code a set of nicely
// rounded corners.
var corner_data = new [] { 8, 6, 4, 3, 2, 2, 1, 1 };
int minrow = 0;
int maxcol = (_flashlight.W - 1);
int maxrow = (_flashlight.H - 1);
for (i = 0; i < 8; i++, minrow++, maxrow--)
{
int d = corner_data[i];
for (j = 0; j < d; j++)
{
if (vs.BytesPerPixel == 2)
{
pn.GoTo(j, minrow);
pn.WriteUInt16(0);
pn.GoTo(maxcol - j, minrow);
pn.WriteUInt16(0);
pn.GoTo(j, maxrow);
pn.WriteUInt16(0);
pn.GoTo(maxcol - j, maxrow);
pn.WriteUInt16(0);
}
else
{
pn.GoTo(j, minrow);
pn.Write(0);
pn.GoTo(maxcol - j, minrow);
pn.Write(0);
pn.GoTo(j, maxrow);
pn.Write(0);
pn.GoTo(maxcol - j, maxrow);
pn.Write(0);
}
}
}
_flashlight.IsDrawn = true;
}