I didn't find the "empty" entity.
We use something called an empty node, which is acessible from the "RMB menu > Utilities" i think. It contains no rendering information but is a node that entities and other things can be attached to using the "Entity - Attach" action.
However, there is no need for the performance waste by adding it to another node or having to do that per scene or drag the preset as you can use the mesh editor and do it once. Simply rotate the mesh around the Y by 90 degrees so it faces a different axis. This works well on characters
Skyline allows rotation and scaling of characters.
> Select entity
> Open mesh editor
> Click the second icon in to import the mesh select in the scene
> Character should appear in viewport
> In right panel in first tab, change the rotation angle to 90 or -90 depending on which way it needs to rotate.
> Set the rotation axis to 0 1 0
> The character should appear rotated.
> Now click the save button which should save directly over the mesh.(
no need for the "save as" this time.)
About Navmesh , does it have some function that will return if a destination can be reached or not because outside of navmesh ?
hmm, if a position is grabbed outside of navmesh using the the navmesh function, then the position is moved to the closest point on navmesh. However, if a model is placed outside of navmesh, im not sure what happens, but no there is no function for that.
If you mean if the character has reached a destination, then you can use navmesh.isDestinationReached, or somthing similar. Its in the Lua API