Rigid body cache not invalidated when field settings are changed #64659

New Issue

Christopher Burns · 2019-05-15T16:12:47+02:00

Christopher Burns commented

2019-05-15 16:12:47 +02:00

System Information
Operating system: macOS 10.14.4
Graphics card: GeForce 650M

Blender Version
Broken: 2.8 2019-05-14 22:59 fc59
Worked: (optional)

New force field settings don't take effect unless an object is moved

For clarity, disable gravity
Add a cube and make it a rigid body. Move the cube a few units along the +X axis
Add a wind field with all default settings (so it's at world origin pointing up)
Press space to start the animation and let it run for N frames (say, N = 100). As expected, nothing will happen because the wind is pointing up
Rotate the wind so it's pointing at the cube and increase the strength to 100
Replay the animation

Up until frame N, nothing happens--the old cached movement is used. The field only seems to take effect at frame N + 1

Move the cube a tiny bit in any direction
Replay the animation

The wind takes effect starting in frame 1

**System Information** Operating system: macOS 10.14.4 Graphics card: GeForce 650M **Blender Version** Broken: 2.8 2019-05-14 22:59 fc59 Worked: (optional) New force field settings don't take effect unless an object is moved 1. For clarity, disable gravity 2. Add a cube and make it a rigid body. Move the cube a few units along the +X axis 3. Add a wind field with all default settings (so it's at world origin pointing up) 4. Press space to start the animation and let it run for N frames (say, N = 100). As expected, nothing will happen because the wind is pointing up 5. Rotate the wind so it's pointing at the cube and increase the strength to 100 6. Replay the animation ***Up until frame N, nothing happens--the old cached movement is used. The field only seems to take effect at frame N + 1*** 7. Move the cube a tiny bit in any direction 8. Replay the animation ***The wind takes effect starting in frame 1***

Christopher Burns commented

2019-05-15 16:12:47 +02:00

Added subscriber: @christopher.burns