lesson11.txt

#color 0xffc3e1fe
#coord 305 17
#title The Subframe Lessons
#title 111: FILT

#font 7px
#color 0xfffbfbbb
#coord 37 46
#section 11.1 FILT Data

FILT's ctype contains 30 bits of information.
You can visualize FILT's ctype from its spectrogram.

Mouseover this FILT to see its spectrogram.

You can treat this sequence of bits as a number in binary.
For example, this FILT represents the number 197.

Here's an enlarged view of that FILT's spectrogram.

#space 40

If you send a BRAY through a FILT, the BRAY picks up the FILT's ctype.
You can also visualize BRAY's ctype from its spectrogram.

#section 11.2 DTEC

DTEC allows you to transfer a BRAY's ctype back to FILT.

Each frame, DTEC searches for BRAYs within a square box.
The search area's size is controlled by DTEC's tmp2.

If DTEC finds a BRAY, it copies the BRAY's ctype
to lines of FILT in all 8 directions.

If DTEC finds multiple BRAYs, it takes the rightmost one.
If there are multiple rightmost BRAYs, it takes the bottommost one.

#font 5px
#color 0xffbefcc4
#coord 410 48
#section Activity #11.1

The game displays BRAY's ctype
as a number in the HUD.

Mouseover this BRAY to see its ctype.

#space 10

Now use ARAY to determine
this FILT's ctype.

#answer
123456
#answer

#section Activity #11.2

Copy the ctype of the FILT marked 'S'
to the FILT marked 'D' within the same frame.

#space 20

If you did it right, both FILTs should
have the same color every frame.

#answer 150 20

Challenge: do the same thing, but only
by adding particles within the blue boxes.

#space 20

#hint
Use ARAY/DTEC to "make way"
for the downward DRAY.
#hint

#answer 150 20