Graphics Programs Reference
In-Depth Information
Figure 13.66
13.11.3 Example: Prey/Predator Relationship
Boids particles will not only act like swarms or flocks in their movement; they can also be made
to react to one another. An example would be one flock of birds chasing of another flock. Let's
set up an example in a new Blender scene with two cubes, as shown in Figure 13.67. Make the
larger cube two times bigger than the smaller cube. The small cube will emit predator particles
and the large cube will emit prey particles.
Predator particles.
Select the small cube in the 3D window and add a particle system in the
properties window - “Particles” tab. Change the following settings:
•
“Emission” tab
- Amount: 100 (the larger number becomes the aggressor)
- Lifetime: 1500 (allows the particles to be visible for the duration of the ani-
mation)
•
“Display” tab
-
Select “Point”' and set the “Draw Size” value to 3.
Figure 13.67
