BLITZ - Createdisplay in AMIGA mode

[Tony Landais]

I have a simple viewer for a sripte and a backgroud with that code in blitz mode.

Bitmap 1,640,256,8
loadbitmap 1,"bitmap1.iff",1
loadshape 1,"sprite1.iff"
BLITZ
initcoplist 1,44,256,$11108,0,256,0
createdisplay 1
displaybitmap 1,1
displaypalette 1,1
buffer 1,16384
bblit 1,1,1,50

but that function or some of them are only available in blitz mode.
I would like to stay in Amiga mode what should I modify?

[Severin]

hmmm, try loadscreen to load and display bitmap.iff

say byebye to the coplist

and use blit instead of bblit, you might need a screensbitmap in there somewhere.

Sorry I can't help much but I've never used blitzmode I write apps rather than games/demos...

[Tony Landais]

well I use screen with the bitmap extension and it works
I just have a trouble now with the shape

I used Wblit,blit and Sblit but the buffer is useless on them

is there a special command to buffer and unbuffer in amiga mode

[Severin]

is there a special command to buffer and unbuffer in amiga mode

Nope, you don't need buffer for amigamode...

Sblit - only use if you have a stencil
Wblit - only works in windows

blit should do what you want. have you told it which bitmap to use eg. use bitmap x?

[Tony Landais]

It s a menu and I used bblit to show the selector of the menu

So if I replace BBlit with Blit and remove buffer the selector never disapear, it moves but the old position is still there.
That is why buffer and unbuffer were very usefull.
How to hide or move an object with blit?

[Severin]

for a quick and dirty method just re-draw the original backdrop.

what you really want to do is copy the bit to be restored into a temporary bitmap(or shape), then copy it back when you have finished, you could use getashape to grab the bit of screen before you blit over it, then blit the temp shape back afterwards... not a very nice way of doing things but actally seeing what your trying to do I can't really tell you the bestmethod to use...

[Tony Landais]

I am sorry to insist, maybe it s due to my english or my terrible level in Blitz but it s not very clear for me
could you explain it to me like if I was the worst coder ever ?

[Severin]

ok this should work (not very nicely though) I'll do this
in fake code to make it easier to explain...

open screen
load bitmap for screen
display bitmap

load shape files
blit 'off' shapes to screen if needed

repeat
check mouse
if mouse over menu gosub update
vwait
forever

update:
find which bit needs updating
store background (getashape your_highest+1,x,y,width,height)
blit 'on' shape to screen
repeat
if mose clicked do something
until mouse outside updated area
blit background shape back into place
return

if this doesn't help, email me your code/images etc so I can see exactly what your trying to do and I'll work out a way to do it...

shameless plug: have a look at LaunchV4 on aminet http://wuarchive.wustl.edu/pub/amine...b/LaunchV4.lha , it's a menu driven program launcher I wrote, I can send you the source if you want...