How do you not cls somthing while clsing other things?

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Socoder -> Blitz -> How do you not cls somthing while clsing other things?
Mon, 02 Oct 2006, 19:45
magicman	the title is pretty self explanitory(and long). pretty much what i want to do is cls everything except for some particals, how would this be done? is it even possible? how wants to be a millionare? -=-=- Stuff... Yeah...
Tue, 03 Oct 2006, 04:35
blanko1324	Can't be done. If you're looking to create a trail effect then you'll have to draw the particle image at each point in the trail. -=-=- My Twitter
Tue, 03 Oct 2006, 04:42
mike_g	If this is Blitz Basic then you could draw the particles to an image buffer. That way you clear the back buffer each loop, and the stuff on the image buffer stays the same. EG: graphics 640, 480 particles = createimage(640, 480) while not keyhit(1) setbuffer backbuffer() cls DRAW_BACKGROUND() drawimage particles, 0, 0 setbuffer imagebuffer(particles) DRAW_PARTICLES() flip wend --v I hope that works, I dont have Blitz on this computer o_0. Anyway something like that should work.
Tue, 03 Oct 2006, 14:42
magicman	i guess ill have to go with the drawing it at each spot, sadly. i could get yours to work mike, not sure why, looks like it should thanks anyways though. -=-=- Stuff... Yeah...
Tue, 03 Oct 2006, 14:48
HoboBen	Mess around with it... graphics 640, 480 particles = createimage(640, 480) while not keyhit(1) setbuffer backbuffer() cls ;Do normal stuff here... ;here ;here setbuffer imagebuffer(particles) ;Draw your particles here... ;here ;here setbuffer backbuffer() ;return to this buffer to flip drawimage particles, 0, 0 ; draw after, otherwise we are on e loop out, not that it matters. flip wend --v Mess around. Post your problem code. -=-=- blog \| work \| code \| more code
Tue, 03 Oct 2006, 15:22
hyruleknight	i would not bother to try to cls only somethings for the minor speed increase i would look through every bit of code and try to locate, review and optimize the code for the speed boost, that and BMAX makes you flip and cls since you can't set the buffers anymore -=-=- i like green haired girls...
Tue, 03 Oct 2006, 15:34
magicman	ok, got it now, must have been the syntax.