Scrolling Sprites

[Mark Lawrimore <marklawrimore at earthlink dot net>]

> How do you go about making sprites appear at the very top of the
> screen when scrolling a sprite surface downward?
Well, one easy way would be to assign someSprite.ScreenY = 0.

HTH,
-Joe

Joe:
I am still having problems with developing my game involving a 
scrolling sprite surface. Below is my code contained in the NextFrame() 
event:
Sub NextFrame()
SpriteSurface1.scroll,0,-2
boat.y=boat.y+2
count=count+1
if count=100 then
        mount=new Sprite
        mount=SpriteSurface1.newSprite(rock1,290,0)
        mount.screenY=-200
        SpriteSurface1.attach mount
end if
if count=400 then
        mount2=new Sprite
        mount2=SpriteSurface1.newSprite(rock2,350,0)
        mount2.screenY=-200
        SpriteSurface1.attach mount2
        count=0
end if
End Sub

First off all, I need a better way to determine when it is time to have 
a new mountain sprite appear.
Second, how do I keep track of when a sprite goes off the bottom of the 
screen? When it does, I need to close the sprite. The way my code is 
set up, the number of sprites keep growing every time count equals 100 
or 400. I am using a 800x600 window & sprite surface.
Thanks
Mark
marklawrimore at earthlink dot net


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