Flavor 17 - Track Location/Draw in Switch
Flavor 17 - Track Location/Draw in Switch
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This flavor is used in together with the Flavor #11 to specify the objects and part of the track that must be drawn when the driver is inside the range defined here.
LONG PURPOSE
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1 Flavor
Flag (11 00 00 80)
2 Track Position
3 Track Position
4 Track Position
5 Track Position
Track Position
Is a value in the range
0 - (track length). Values can be repeated multiple times in a flavor.
As far as I can tell,
flavor 17's values are
based on the initial position value in flavor 12. and when looking at flavor
17 you must
also look at the flavor11
that accompanies the fl17. in that flavor 11 you will find a call to 7
offsets. Each offset
calls to a particular
section of track which coincides with the beginning section value in Flavor12.
The first four
offsets always call to
four textured [T] sections of track, these four textured sections
are usually the total
section length divided
by four. The 5th and 6th offsets called will each call to a section of
plain polygons, each
section is 1/2 of the
total length of the section. The 7th and last offset will call to a set
of plain polygons that
stretch the entire length
of the section. This creates the draw order, when you are driving, you
will notice plain
polygons being drawn
off in the distance.
The asscoiated FL11 will
look like this (I've begun to refer to them as 11/17 because
it is really a combination
of the 2.
F11 264123
127468 128412
87128 87128 127656
87128 126656
F17 246143
42634925 46817748
46817748 46817748
Ok, the 87128 line I threw
in is actually F00, it is a null flavor, it tells the sim that nothing
is needed in that
position but to read
on to the next.
When writing values out
for flavor 17 you can do it like this. If the flavor 11 has 7 offsets (NO
null flavor calls)
the Flavor 17 values
are very easy to write. The four values of F17 are the beginning section
values in F12, so
trace the first four
F11 offsets from the 11/17 combination and trace them down to their F12
values.When
doing this make sure
that you are looking at beginning section values in TEXTURED sections.
Your values will
be inaccurate if you
use the wrong section.
Now In the cases of having
null flavors in there it gets a little more tricky.
In the case of a line
like this:
F11 268111 199166 87128 87128 87128 199411 87128 199846
In the case of the f11
above you f17 would be pretty easy. All four values
of f17 would use the
initial pos value of the 1st textured section.
In the case of a f11 that looked like this:
f11 268111 199166 199228 87128 87128 199411 87128 199846
In a line like this the
f17's 1st value would be the initial pos value of
the first textured section,
since there are only 2 textured sections being callex
to the last 3 values
of fl17 would use the initial pos value of the 2nd and last
textured section..you
will NEVER see a f17 with the values split like this:
F17 270000 42634925 42634925 46811176 46811176
I've found that it always looks like this when only 2 textured sections are called to
F17 270000 42634925 46811176 46711176 46811176
Also, I've never seen
a flavor 11/17 that calls to 3 textured sections. always 1/2/4.
usually in corners it
will call one or 2, four for straight sections..this makes sense
because you dont need
as much track called in a turn...