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DarkBASIC Discussion / Multilayered/transparent sprites

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CaiF_R
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Posted: 28th Jan 2003 06:19
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Is it possible to make a semi-transparent sprite ie. where a purple colour would result in transparentsy?? Iam going to use it for a 2d sidescroller where i would like a background to scroll and then a sprite (ie. buildings) ontop of the that would then again scroll with a different speed. And finally another sprite (ie. sidewalk). I could use some help on that too

Thanks
Cheers, CaiF_R.
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CaiF_R
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Posted: 28th Jan 2003 07:15
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Ohh I have figured out how to make part of the image transparent (using: paste image nr, X, Y, RGB(R,G,B) But how can i control wich images are drawn infront and behind other images/sprites?? Ie. if i want a sidewalk to scroll behind a sort of framing interface.

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indi
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Posted: 28th Jan 2003 07:45
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in dbc its the sprite creation order.

in DBP u have a few more sprite layering commands at your disposal

http://www.lunarpixel.com

http://www.lunarpixel.com/dt/
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CaiF_R
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Posted: 28th Jan 2003 08:30
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Figured it out myself but thanks anyway
Maybe u could help me with some image scroll instead?
Is it possible to make a "endles" scroll??
If so how large/wide should the image be if it should fill the screen at a width of 800?

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indi
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Posted: 28th Jan 2003 09:47
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Well u could use 2 that are 1.5 times the required size and then add new tiles to this process of flipping 2 cells.
the * is where the new tile is placed
the [ ] indicates the screen visible area
the diagram is shifting to the right if it makes sense.


______*[_____]___

http://www.lunarpixel.com

http://www.lunarpixel.com/dt/
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IanM
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Posted: 28th Jan 2003 14:14
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Depending on the size of your scroll area:

small: Use several sprites and move them to create the illusion of scrolling
larger: You'll probably want to put together a tiling system and redraw the screen each time using paste image for each tile, moving the the coords you draw at to make it seem to move.
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IanM
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Posted: 28th Jan 2003 14:31
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An example of a tile scroll:

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CaiF_R
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Posted: 28th Jan 2003 21:24
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Thanks for the help but i´ve actualy come up with an idea myself.. alot simpler but i havent fully tested is so i cant say if its more flexible



But thanks anyway
Cheers

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CaiF_R
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Posted: 28th Jan 2003 21:27
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Oops. Didt notice that lame inc. I could just have said
Inc x, 3 (easy to control the speed of different layers)



Cheers

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indi
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Posted: 29th Jan 2003 10:40
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lol good luck mate

http://www.lunarpixel.com

http://www.lunarpixel.com/dt/
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IanM
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Posted: 29th Jan 2003 14:01
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If you have a look at the code, you'll see that we're basically doing the same thing, except I'm doing it with more images.
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