Quick answer: Set Bounce 0.5+ on Collision Cone module. Inverted = false for outside-cone bouncing.

Sparks emitter with cone collider. Sparks stop at surface; don’t bounce. Bounce was 0.

The Fix

Particle Update:
  + Collision (Cone):
      Cone Center:   (0, 0, 0)
      Cone Direction: Vector3.up
      Half Angle:    30°
      Bounce:        0.6
      Friction:      0.2
      Inverted:      false

Bounce reflects velocity. Friction dampens lateral. Inverted toggles inside vs outside collision.

Verifying

Sparks bounce off cone surface. Bounce 0: stop. Bounce 1: lossless reflection.

“Bounce up. Sparks ricochet.”

Related Issues

For VFX shadow, see shadow. For VFX strip collapse, see strip.

Bounce up. Reflect.