I want calculate particle position,but I don’t understand the “dampen”.

Thanks.

The dampen value is whats used to bring the velocity of the module back within the limits.

If the velocity of a particle exceeds the limit then we lerp from the current velocity to the limit using the dampen as the lerp value t.

*lerp(absolute velocity, limit, dampen)*

@karl_jones the dampen is based on frame or the frame delta time？ Thanks～