Alcorn Mcbride V+ series, User Manual

Page: 167 / 276

Application Notes 7-23
MotionSensor
triggers the sequence
Welcome
. This sequence resets the
flags using ResetFlags to ensure that the show is in a known state, turns
on
PlayingWelcomeFlag
to alert the other sequences that the Welcome
clip is currently playing, and then plays the Welcome clip.
When
PlayInput
(the
Playing
output of the DVM) turns off, we know that
one of the clips has just finished playing - but which one? Using the two
flags we created earlier (
PlayingWelcomeFlag and PlayingClipFlag ),
we can create a sequence that is triggered when
PlayInput
turns off. We
can then decide whether it should wait for the guest to push a button (after
Welcome has finished), or immediately play the Welcome clip (after an
informational clip has played).
Our sequence,
ClipFinished
, first checks the state of
PlayingClipFlag
.
If it is on, the sequence knows that the DVM has just finished playing one
of the four informational clips. It turns off
PlayingClipFlag and starts
Welcome (which plays the Welcome clip again). If
PlayingClipFlag
is
off, then the sequence checks the state of
PlayingWelcomeFlag
. If
PlayingWelcomeFlag is on, the sequence knows that the DVM has just
finished playing the Welcome clip and that it should wait for the guest to
push a button. It turns off the flag and starts our "waiting" sequence,
WaitingForSelection . We are only interested in the status of the four
informational clips and the Welcome clip during the show, so if both flags
are off, we do nothing.