* Fixed: Item returning null in drag and drop when column is hidden
* Added explanation about why this approach is needed
Signed-off-by: John <jonawals@amazon.com>
Remove warning when entities that aren't registered to instances get passed to the Prefab Undo Cache (just ignore them to avoid noise in the console).
Also avoid marking templates dirty when they are added.
* Fixes saving motions from within the Animation Editor
* Fixes saving actors from within the Animation Editor
* The motion event chunk of the .motion file format now also stores the event data as json (rather than XML) reducing motion file sizes (Example: 60KB motion went down to 49KB, containing only 4 motion events from 2 tracks).
* Fully backward compatible
* New motion meta data rule stores the event data directly rather than command strings or objects. This is the way that aligns with the Json paradigm and as side-effect bypasses the optionals that we use for the commands which fixes the issue.
* [LYN-4574] Adding new motion event meta data rule that stores the event data directly rather than via commands to align with the Json paradigm
* [LYN-4574] Preparing motion, event table and event track for Json serialization
* [LYN-4574] New chunk to store motion event data in Json format (fully backward compatible to XML)
* [LYN-4669] Json: Empty AZStd::vector<AZStd::shared_ptr<T>> serializes into 1x element with nullptr as data
* [LYN-4603] EMotion FX: Cannot save actors with physics or simulated object setup in Json format
Actor motion extraction applies at all times, sending transform change events to the Qt widget and overwriting any editing the user is doing. (LY-124903)
* Removed a bit of dead legacy code
* Fixed entity references during spawning
Entities that had references to other entities that hadn't been spawned yet weren't getting their IDs remapped correctly, since the new ID wasn't available yet. By pre-generating the full set of IDs, the references now remap correctly.
* Fixed up Entity References to work across multiple SpawnEntities calls
With SpawnEntities, entity references need to forward-reference to the *first* entity spawned, then from that point on backwards-reference to the *last* entity spawned. Added that logic, along with some initial unit tests for SpawnAllEntities.
* Added more unit tests for SpawnEntities / SpawnAllEntities