Game Development Reference
In-Depth Information
Appendix D
Test Flow
Diagram (TFD)
Powerups are items that give
your character some kind of
temporary bonus. You might
need to drive over them, run
over them, trigger a special
item in a puzzle, or hit a spe-
cial sequence on your game
controller or keypad. The
TFD template in Figure D.1
covers acquiring the powerup,
using its abilities, canceling
the powerup, checking for
powerup expiration, and
stacking powerups. This same
template could also be used
for RPG and adventure
games where a player can
trigger temporary effects from
a weapon, get a temporary
boost from an item, or receive
temporary “buff �? spells from
other characters.
Figure D.1 Powerups TFD template.
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