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Old 22 May 2017, 11:37   #1
earok
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Structure of CopList object?

I can't seem to find a list of the contents of the "CopList" structure anywhere, even on http://www.amigacoding.com/index.php/Blitz:Object_types

I've reverse engineered enough of it to keep going, but having a fully labelled version of it would be useful for future, cheers.
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Old 22 May 2017, 12:48   #2
Daedalus
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Hmmm, that is strange - it's not in the source of bb2objtypes.res either, which is where it should be... So I don't know where it's declared. Perhaps you could add what you've determined to the Blitz Object Types page to help others - partial information is better than none at all! Or send it to me and I can add it for you.

I don't know if you've already looked at it, but the AB3 object browser lets you at least see the names and types of the fields in a structure - it might be worth a look.
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Old 22 May 2017, 12:57   #3
earok
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Quote:
Originally Posted by Daedalus View Post
Hmmm, that is strange - it's not in the source of bb2objtypes.res either, which is where it should be... So I don't know where it's declared. Perhaps you could add what you've determined to the Blitz Object Types page to help others - partial information is better than none at all! Or send it to me and I can add it for you.

I don't know if you've already looked at it, but the AB3 object browser lets you at least see the names and types of the fields in a structure - it might be worth a look.
Ah cheers.. I haven't looked at AB3 at all.

In any case.. here's what I came up with. I'm 99% sure there's more fields than just this, this was as far as I dug into it (I only wanted to poke the custom copper commands).

Quote:
NEWTYPE .CopList
unknown.l ;*shrug*
copperlistaddress.l ;Address to the root of the copper list
copperlistaddress_palette.l ;Address to the start of the palette section
copperlistaddress_sprite.l ;Address to the start of the sprite section
copperlistaddress_bplcon.l ;Address to the BPL registers section
copperlistaddress_bitplanes.l ;Address to the Bitplanes settings here
copperlistaddress_topofscreen.l ;Address to the top of screen delay
copperlistaddress_custom.l ;Address to the custom copper commands
End NEWTYPE
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Old 22 May 2017, 13:02   #4
Daedalus
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Cool, I'll add them anyway and have a look myself. I haven't ever looked at the structure itself so never noticed it was missing (or at least hidden away elsewhere). I'll have a dig through it when I'm in front of my machine at home later on and see what I can find.
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Old 22 May 2017, 18:33   #5
Cylon
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It's in bb2objtypes.res, also in the sourcecode of this precompiled include:
Code:
NEWTYPE .coplist
  size.l            ;0 = not initialised
  coppos.l          ;location in chipmem
  colors.l
  sprites.l
  bpcons.l
  bplanes.l
  dot.l
  customs.l
  dob.l
  numbp.w:colpokes.w                  ;limits
  fetchwid.w:xand:xshift              ;for show calculations (3 words)
  ypos.w:height:res
  numsprites.w:numcols:numcustoms
  aga.w                               ;24bit=$8000 fetch = $00,$10,$20,$30
  resshift.w                          ;lo,hi,shi = 2 1 0
  setup.w                             ;lines taken for setup
  cblow.w                             ;if custom goes below 256
  sfetch.w:spres:spif:spwid:sspwid    ;sprite mode for display
End NEWTYPE
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Old 23 May 2017, 00:55   #6
Daedalus
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Ah, interesting... It doesn't appear to be in either the AB3 version of bb2objtypes.res or the BB2 version I have here. I've added it anyway to the AmigaCoding list.

Be careful here though, and remember that lower-case Newtypes are generally Blitz internal objects, whereas CamelCase Newtypes are generally OS structs as defined in amigalibs.res (and prepended with an underscore in all.res). I was a little confused about that earlier, and it's the OS struct that earok appears to be using in his code.

The attachment is the AB3 definition of the .CopList Newtype (the OS-defined one), which is the one you appear to be using earok. It matches the struct defined in the Amiga SDK (includes/graphics/copper.h), but just like for other objects, is different to the Blitz internal .coplist Newtype.
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Old 23 May 2017, 03:33   #7
earok
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ah, thanks guys. Much appreciated
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Old 23 May 2017, 23:13   #8
idrougge
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It's also not in my bb2objtypes, which I used for adding the other objects to the Amigacoding wiki.
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