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AUGUST.TXT
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1989-07-29
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Subject: August GFA Basic Section
By: James Collett (Professor)
A Member Of: VIRTUAL INFINITY
E-Mail: s6005146@brookes.ac.uk
Address: Park View Farm, Carlton, Nr Nuneaton, Warks, CV13 ODA
Mono Account: bcc
Sorry the information file with last months (August) GFA section was
short and cryptic, there wasn`t much disk space left and I thought it
more sensible to use it for the programs. This is probably just a
slightly extended repeat of what I said last month, but here goes with
the information concerning August`s GFA files:
3-D Dister
==========
I`ve re-written the replay so it runs 'flicker free' on a machine
without a blitter. I`ve also optimised the 352044 pixel record by a
WHOLE MINUTE by pre-calculating the trig. table.
I still don`t think it runs on a half megabyte - WILL SOMEBODY PLEASE
LET ME KNOW!! [Note the 2-D dister was on July Ictari disk.]
Infinite Sprites
================
Nothing much new to say, I`ve simply converted it to GFA 2, [note the
GFA 3 version was on July Ictari disk.]
Rasters, Rasters, Rasters
=========================
I`m afraid I went raster mad! Firstly, BORDER.LST should explain the
basic theory of my "pseudo rasters".
Animated routines include: bouncing RAST_BAR, simultaneous BI_DIRECT
rasters and simult. BI_BARS (GFA 3 only). Finally a crappy 13_COLOR
"pseudo interlace" thingy using rasters.
Star-Field
==========
This was a quicky based on a little theory of fixed, 2-D, concentric
circles, so don`t expect too much from it! I know there are dozens of
other star routines around, smoother and more efficient!
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