Un grand merci à Face Hugger qui nous permet de profiter du source de ce prototype, très interessant au demeurant :
http://www.cpc-p0wer.com/index.php?page=detail&num=3556
Je n'ai pas encore eu le temps de regarder ce source de plus près donc je vous le livre tel que je l'ai reçu avec la petite annotation suivante de l'auteur :
Face Hugger a écrit :
Maybe i can add some technical things about the sprite engine which i believe to remember:
- sprites are tile based like on a game console
- there are a lot of special routines for all cases which is used by the sprite engine, i.e. clipping a tile to the screen boundaries, masking to the background if needed, not masking if not needed and sprites that are masked on byte-level instead of pixel-based and so on
- it uses three screens, two for screen flipping and one is holding the background graphics to restore the sprite background
- there is some kind of a sprite editor, i think the graphic has been stored inside the second 64k memory bank of the CPC 6128
- sprites are tile based like on a game console
- there are a lot of special routines for all cases which is used by the sprite engine, i.e. clipping a tile to the screen boundaries, masking to the background if needed, not masking if not needed and sprites that are masked on byte-level instead of pixel-based and so on
- it uses three screens, two for screen flipping and one is holding the background graphics to restore the sprite background
- there is some kind of a sprite editor, i think the graphic has been stored inside the second 64k memory bank of the CPC 6128
Pièce jointe :
XContra.zip
N'hésitez pas à le contacter si vous en faites quelque chose
