Blender Version: Blender 2.56 x64
OS: Windows 7 Home Premium 64 Bit
I’m creating some simple smoke trails for missiles where a particle emitter is following a path. The problem is that the particles are being emitted in clumps on whole frames and they are not being emitted in a continuous stream.
I set up my animation using a follow path constraint as suggested and in previous Blender versions(Prior to 2.5) this setup worked. However, it is not working in Blender 2.56
So I created a simple file in Blender 2.56 to demonstrate this issue. There are two emitters in this file. The left one is following a path and the right one is just key framed. The differences between the particles should be obvious. The two emitters are also identical.
It would appear that I cannot attach the Blender file because it is almost 4MB is size. As a result I have attached a screen capture and here is a link to download the file from one of my websites:
I’m not sure why your setup is not working, it might be a bug. However, if you remove the f-curve for the evaluation time for your path and instead animate the offset for your plane constraint it seems to work OK. You need to select the Fixed Position box in the constraint as well.
It’s on the todo and should be fixed for the 2.7 release in march.
It doesn’t only encounter with follow path but also with parent to curve, parent to empty + rotate, use a bone for movement of the emitter, curve deform any many more.
Current workaround: Set keyframes manually, don’t use the path.
Grab or Select the BezierCircle or other curve name
Property Panel - Object Data tab - Path Animations (checked)
a. set number of frames needed to complete the path, frames = 25
b. Evaluation time should be at 0, left click Evaluation Time - Insert key frame at 0
c. Scrub Timeline to 25,
d. Scrub Evaluation Time = 25, left click Evaluation Time - Insert key frame at 25
Run Animation. there is away to duplicate the pattern in the f-curve editor, but that’s a different post.
