Game Development Reference
In-Depth Information
•
Options
: This contains the following five additional checkmarks to configure
the emitter's behavior:
°
Additive
: This option, if checked, will enable the additive blending
mode.
°
Attached
: This option, if checked, will allow the existing particles to
follow the movement of its emitter.
°
Continuous
: This option, if checked, will restart the emitter after its
duration of time is over. Emitters that are not set to be continuous
will only show up once at the beginning.
°
Aligned
: This option, if checked, will add the particle's emission
angle to its local rotation. This will turn the particle's image face in
the same direction as it is moving.
°
Behind
: This option, if checked, will set the corresponding marker
flag to
true
. Otherwise, it is set to
false
. This is just a marker flag
that can be queried by calling
isBehind()
to decide whether the
emitter should be rendered behind or in front of something else.
Some of the emitter's properties contain charts. The
x
axis in a chart always represents
the lifetime of a particle, while the
y
axis represents the percentage of each emitter
property's actual value. A click on the chart adds a new node. Double-clicking on a
node removes it again. Clicking-and-dragging a node moves it inside the chart.
The following screenshot shows a portion of the emitter properties:
