Move a small Bitmap over a large Bitmap

[romanhoehne]

Hi,

I've downloaded some samples for directdraw, but only in directx7 (SpaceBreakout) or I've found some for dx9 in C or C++ on this pages here.

I want to move some small bitmaps (50 times 50 Pixs) with black as transparent color over a map (400 times 400 Pixs visible, 1000 times 1000 virtual). All in mode "display.SetCooperativeLevel(this, CooperativeLevelFlags.Normal);" . FullScreen maybe later...

 

Are here some good hints in csharp for directx9 here or has someone an example?

 

Here is, what I have tried so far (the "knight" has still a black Border...):

 

private void Draw()

....

primary.Draw(destination, offscreen, new Rectangle(i,j,300,300), Microsoft.DirectX.DirectDraw.DrawFlags.Wait, new DrawEffects() ) ;

primary.Draw(destination1, knight, DrawFlags.Wait);

 

private void CreateSurfaces()

{

display = new Device();

display.SetCooperativeLevel(this, CooperativeLevelFlags.Normal);

SurfaceDescription description = new SurfaceDescription();

description.SurfaceCaps.PrimarySurface = true;

primary = new Surface(description, display);

description.Clear();

clip = new Clipper(display);

clip.Window = this;

primary.Clipper = clip;

description.Clear();

offscreen = new Surface("card.bmp", description, display);

description.Clear();

ColorKey CC = new ColorKey();

CC.ColorSpaceHighValue = 0;

CC.ColorSpaceLowValue = 0;

knight = new Surface("knight.bmp", description, display);

knight.SetColorKey(Microsoft.DirectX.DirectDraw.ColorKeyFlags.SourceDraw, CC);

}

 

Maybe, I have forgotten something :(

 

Best regards

Roman

[AndreRyan]

The Error is on this line

primary.Draw(destination1, knight, DrawFlags.Wait);

It should be:

primary.Draw(destination1, knight, DrawFlags.Wait | DrawFlags.KeySource);

You need to tell DirectDraw to use the color key, because it wants to know whether to use it on a case-by-case basis.

Edited December 29, 2003 by AndreRyan

[romanhoehne]

Thanx alot!

 

Thanx for the help!

Is there a way to bring bitmaps faster to the screen using directX9 / c#? When I move/scroll the map and the knight in windowed mode.. it seams to fl[ai]cker...

Regards,

Roman

:rolleyes: