Drive entities
Open your .iaentitymodel model file with Blockbench.
.iaentitymodel
Create a new bone.
Right click on the bone and select "Bone Config"
Check the "Mount" option and press "Confirm".
Do this for each seat you want to create.
Now you have to export your model as usual.
Just right-click the entity and control it.
Only the first player who sits on the entity can control it.
Last updated 3 minutes ago