Let's talk about the concept first. We will have leaves (Particle) falling from a tree (PF Source 01) and stop on the ground (deflector) once the leaves hit (Collision event) the ground. So we will end up having:
- 1 x Particle Flow Source (Particle, PF Source 01)
- 1 x SpaceWarps (Deflector)
- 1 x Particle Event (Collision)
- Open Particle View by hitting "6" key on your keyboard or Graph Editors > Particle View
- Drag a Standard Flow from the Depot, into Event Display. A PF Source 01 will be created on the origin.
- Now try to slide your time slider back and forth, you will see in the viewport the particles generated from PF Source 01 are moving down at Z-axis.
- Ok, it works pretty fine but we should move the PF Source 01 higher so that we can create a Ground object in the next step.
- Close Particle View.
- Now, create a Deflector (Create > SpaceWarps > Deflectors > Deflector) to use as ground, where we will make the leaves stop falling once they collides with the ground.
- Name it Ground_01.
- Place this Deflector right beneath the PF Source 01, its size to be set to cover all particle.
Setting up Particle Event
- Open Particle View.
- Drag a Collision from the Depot into our Event 01 (see image below), you can place it anywhere, its position makes no difference.
- Now under Collision parameter, click Add and pick our Ground_01 (see image below).
- Try to slide our time slider again, you will now notice the particle being bounced off at the point they hit Ground_01. This is not something we wanted, but we're almost there.
- Next, while we still have Collision event selected, go to Test True if Particle > Collides > Speed > Stop (see image below).
- Now run the time slider again.
- Voila! Our particle now stop when they hit Ground_01.
To be continue... Part 2.