Deacc
The speed a particle loses each frame.
- Applies to
- ParticleType
- File
rules.ini- Section
[<ObjectType ID>]- Value
- floating point
- When omitted
0
The value is in leptons per frame, the same unit as Velocity. The speed it reduces is a single value along the particle’s direction of travel, not one per axis. Only Fire and Smoke particles use it.
A Fire particle loses this amount every frame. When its speed reaches zero it stops, and it is removed on the next frame. Velocity divided by this value is therefore how many frames a flame travels: Velocity=8 with Deacc=.25 stops after 32 frames. The flame ends sooner if its MaxEC lifetime runs out first.
A Smoke particle loses this amount only while it rises faster than 3 leptons a frame. A puff that starts at 3 or less keeps its starting speed. A faster puff slows until its speed is 3 or less, and keeps that final speed for the rest of its life. The final speed lies between 3 minus Deacc and 3, so a small Deacc gives a steady climb of about 3 leptons a frame.
A negative value adds speed instead. A flame then never stops and keeps accelerating until its lifetime or another limit ends it. A smoke puff that starts faster than 3 leptons a frame keeps accelerating upward.