>From Geoff: > Well things like Defender (I haven't seen the Sam version, but my > memory of the game is of large blocks of single colour) cheat by > only moving the edges. A bit like the old "Snake" game you get > now on Nokia phones - since the mid-sections aren't moving you > only need to draw the beginning and the end. > > My Big Scrolly Demo (on NVG, I believe) used this technique to > draw a full-screen-height scrolltext.
Damn! This beats my 80 pixel high 50pfs scroller by 192-80 pixels! You can save some time per frame by turning off the screen and reducing screen contention, which looks... interesting. If you try turning the screen off for frames where the scroller/game has not updated, you get a dead smooth effect, unfortunately the brightness goes right down. Maybe it would be good for a ghost adventure? Middle of the night? Partial Blindness Survival-em-up??? -Tob
