' scen/potion.txt - finding 2.12, and a bigger one found beside it.
'
' MISC.S POTIONEFFECT opens with
'     lda CharID / bne ]rts
' so a potion works on the player and on nobody else.  The port had no such
' test: when the thief drinks the flask on level 5 the kid would get the
' benefit of it.  That half cannot be shown here - the thief's recorded
' programme does not take him to the flask in any staging I could set up - so
' the guard goes in untested and says so.
'
' The other half can.  POTIONEFFECT reads lastpotion and compares it against
' 1 to 5 directly: the kind of potion IS the block's modifier byte.  The port
' shifted it down five bits, which turns every flask in the game into type
' zero, and type zero is no effect at all.  Nothing any potion does has ever
' happened in this port.
'
' Level 7 screen 1 (8,2) carries a 3, which is the float potion - the one the
' long drop on that level exists to be survived with.  He is put beside it,
' crouches, and drinks.

SCEN the float potion makes him weightless
AT 7 1 9 2
SEED 17
RUN ..B..vvvDvvDvvD
RUN ....................................
WANT POTIONS 1
WANT FLOAT GT 0
WANT ALIVE 1
WANT BY 2
END
