9

Directing Delegates 1163
•TheWall Seek behavior (page 2–1229)causes
delegates to seek a rectangular area. Compare
with the Seek behavior, which causes delegates
to seek an object’s pivot point.
•ThePath Follow behavior (page 2–1216) is
also usefu l for pushing delegates in a specified
direction. With this b ehavior, delegates follow
apathbutcan“stray”fromthepathbya
specified distance, cr eating slightly random
motion along the path.
•WiththeSurface Arrive behavior (page 2–1223),
delegatesseekoneormoreobjectsasthey
do with the Seek behavior, but you can cause
delegates to stop when they reach a target.
•YoucanusetheSurface Follow behavior (page
2–1226) to cause delegates to move along a
surface.
•WiththeSpace Warp behavior (page 2–1221),
you can use a vector field to push delegates
around the field to avoid obstacles. See Obstacle
Avoidance (page 2–1164).
After sett in g up a behavior, you must use Behavior
Assignments (page 2–1200) to assign the behavior
to a delegate or team.
Pr ocedur es
To use the Seek behav ior:
1.
Select t he crowd helper and access the Modify
panel.
2. In the Setup rollout > Behaviors group, click
New. Choose Seek Behavior from the pop-up
list.
The Seek Behavior rollout appears below the
Setup rollout.
3. In the Seek B ehavior rollout (page 2–1220),
click None to add one seek object, or click
Multiple Selection to designate more than one
object for the delegates to seek.
4. Change the default settings as desired.
To us e t he Wal l S eek behavi or:
1.
On the Create panel, click Helpers, and click
Grid. Create a grid in the scene.
Tip: For best results, do not use Mir ror to
copy a grid to be used with behaviors. Use
Shi f t +Clone instead.
2. Move and rotate the grid to position it.
Tip: The Wall Seek behavior attracts delegates
tothegridinthedirectionofgrid’slocalZ
axis. With the grid still selected, use the Local
coordinate system to see the direction of the
Z axis in viewports; the axis arrow points in
thedirectionofthepositiveZaxis.Checking
the Z-axis direction will speed the process of
setting up the behavior.
3. Select the crowd object, and add a Wall Seek
behav ior.
4. In the Wall Seek Behavior rollout, click None,
and pick the grid.
5. Cho ose Positive Axis to cause the delegates
to be attracted to the Z-axis side of the grid.
You can also choose Negative Axis to atrract
delegates to the opposite side of the grid, or
Both to attract them to both sides.
6. If you want delegates to be attracted to the grid
only when they are within a specified area in
front of the grid (rather than when they are
anywhereinthescene),turnonUseDistance.
Use the Inner Distance and Out er Distance
parameters to set the area in which delegates
willbeattractedtothegrid.TurnonDisplay
Distance to see the distance in view ports.
To use the Path Follow behavior:
1.
On the Create panel, click Shapes. Create a
shapetobeusedasapathfordelegates.
2. Add a Path Follow behavior to the Crowd
object.