[blitz] dual playfield (AGA) + 2 screens

peceha · 18 March 2021, 19:01

Hi,

is it possible to have another screen at the bottom when the top one is dual playfield (2*16 colors)?

Looking at the picture, top screen would be dual playfield: the maze (back field) + entities (fore field) and second screen would be the status bar at the bottom.

Thanks

carrion · 19 March 2021, 10:33

Hey Peceha
yes it's possible. you need two copperlists done normal way with:
InitCopList copper0, 44, 200,.....
InitCopList copper1, 248, 32,.....

and then in your mainloop just use

DisplayBitmap copper0,..... -< the one with dual playfield
DisplayBitmap copper1,..... -< the one for the panel

This is how I do it and it works great.

peceha · 19 March 2021, 12:39

wow!

Thanks.

peceha · 19 March 2021, 14:15

Ok,
the screen is there -> you can see the bitmap at the bottom
but there is something wrong with it...

Last picture shows fragment of the code - maybe you can see something strange there..

carrion · 19 March 2021, 15:44

hint:
how many bitplanes the panel bitmap has?

Coagulus · 19 March 2021, 16:10

JetHunt does this. Dual playfield above a 256 colour panel. I remember though having to leave a bigger-than-the-manual stated gap between the Coplists as the panel kept being displayed corrupted like yours.

peceha · 19 March 2021, 17:04

@carrion
now 4 (first version, the one on the picture above: 5)
bitmap that I load onto this panel has 4 bitplanes as well

@Coagulus
I tried.. but there must be something else - making the gap bigger doesn't help in my case
I started from 3 pixels and ended up with something like 20 or so.

carrion · 19 March 2021, 17:43

@peceha
and that's the problem because you setup 8 biplanes in your copperlist, aren't you?

peceha · 19 March 2021, 17:58

Ha !
Thanks! - now works

that's the beauty of copy&paste

peceha · 19 March 2021, 18:10

ok, but now that bottom bitmap is shifted to the right like around 16 or more pixels...
it is not aligned vertically with top display

carrion · 19 March 2021, 18:32

I think you you don't need displayControls for copper1
and pls it doesn't hurt to just try changing few options by yourself

peceha · 19 March 2021, 18:42

second displayControls is long time gone
and..
that's what i've been doing for min. last one hour - changing few options myself

- I ran through many gap's heights (like stated before) - at the same time adjusting second display height - so all fits within 256 pixels
- I changed display depths
- I switch on/off displaycontrols with different combinations of above
- I set different flags under TYPE for InitCopList

there were more - but cannot recall now

Anyway thanks for help, will keep trying more

edit
hehe, ok, I did so many combinations and I missed one thing
smoothscrolling must be set on the second display - now it is finally like expected

Thank you

18 March 2021, 19:01	#1
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	[blitz] dual playfield (AGA) + 2 screens Hi, is it possible to have another screen at the bottom when the top one is dual playfield (2*16 colors)? Looking at the picture, top screen would be dual playfield: the maze (back field) + entities (fore field) and second screen would be the status bar at the bottom. Thanks

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19 March 2021, 10:33	#2
carrion Registered User Join Date: Dec 2016 Location: Warsaw area Posts: 152	Hey Peceha yes it's possible. you need two copperlists done normal way with: InitCopList copper0, 44, 200,..... InitCopList copper1, 248, 32,..... and then in your mainloop just use DisplayBitmap copper0,..... -< the one with dual playfield DisplayBitmap copper1,..... -< the one for the panel This is how I do it and it works great.

19 March 2021, 12:39	#3
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	wow! Thanks.

19 March 2021, 14:15	#4
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	Ok, the screen is there -> you can see the bitmap at the bottom but there is something wrong with it... Last picture shows fragment of the code - maybe you can see something strange there..

19 March 2021, 15:44	#5
carrion Registered User Join Date: Dec 2016 Location: Warsaw area Posts: 152	hint: how many bitplanes the panel bitmap has?

19 March 2021, 16:10	#6
Coagulus Gets there in the end... Join Date: Sep 2005 Location: Wales Posts: 862	JetHunt does this. Dual playfield above a 256 colour panel. I remember though having to leave a bigger-than-the-manual stated gap between the Coplists as the panel kept being displayed corrupted like yours.

19 March 2021, 17:04	#7
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	@carrion now 4 (first version, the one on the picture above: 5) bitmap that I load onto this panel has 4 bitplanes as well @Coagulus I tried.. but there must be something else - making the gap bigger doesn't help in my case I started from 3 pixels and ended up with something like 20 or so.

19 March 2021, 17:43	#8
carrion Registered User Join Date: Dec 2016 Location: Warsaw area Posts: 152	@peceha and that's the problem because you setup 8 biplanes in your copperlist, aren't you?

19 March 2021, 17:58	#9
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	Ha ! Thanks! - now works that's the beauty of copy&paste

19 March 2021, 18:10	#10
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	ok, but now that bottom bitmap is shifted to the right like around 16 or more pixels... it is not aligned vertically with top display

19 March 2021, 18:32	#11
carrion Registered User Join Date: Dec 2016 Location: Warsaw area Posts: 152	I think you you don't need displayControls for copper1 and pls it doesn't hurt to just try changing few options by yourself

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19 March 2021, 18:42	#12
peceha Registered User Join Date: Dec 2017 Location: Poland Age: 47 Posts: 282	second displayControls is long time gone and.. that's what i've been doing for min. last one hour - changing few options myself - I ran through many gap's heights (like stated before) - at the same time adjusting second display height - so all fits within 256 pixels - I changed display depths - I switch on/off displaycontrols with different combinations of above - I set different flags under TYPE for InitCopList there were more - but cannot recall now Anyway thanks for help, will keep trying more edit hehe, ok, I did so many combinations and I missed one thing smoothscrolling must be set on the second display - now it is finally like expected Thank you