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I got some a background picture of sand. I also have separate pictures of lines drawn in the sand. I want the individual lines to appear as if they are being drawn with a stick. (Like when you see a prison wall with four lines and a fifth line drawn through it to symbolize the number 5)

I made the background picture (sand) a bitmap. Then there are 5 pictures of lines numbered 1, 2, 3, 4, 5.

Can I make each of the first 4 pictures of lines appear from top to bottom and the fifth from left to right? I have DB and DB Pro but haven't seen a command that seems to allow you to do that.

I'm also having a bit of trouble figuring out the difference between bitmaps, sprites and images. Are they all interchangeable terms with interchangeable properties?

thanks

You can try using memblocks to edit your images or do some bitmap editing - there is no option to wipe in the image line by line or pixel by pixel by default. I don't want to try and explain the complexities of memblocks (mainly because I'm no too good at using them), but for bitmaps, what you could do is:

set the image colorkey to something like pink
load your line images (which have pink in the transparent areas)
"start a loop here"
paste your sand texture on screen
paste your line images onto a different bitmap - i.e. set current bitmap 2 or something
make a pink box on top of your line images
-every loop create a smaller pink box, so more of the line is shown
get the image from the bitmap 2
set current bitmap 0 (the screen)
paste your pink box/ line images ontop of your sandy texture
sync
"loop"

Hope that's helpful - if you don't understand it, someone else will...