only player objects should be drag-selectable in game mode

[DaanMeijer]

Currently, all GameObjects seem to be selectable, including civilian buildings and trees. The game should only allow for the LocalPlayers objects to be selectable

[Continous]

I think it should be noted that neutral structures and garrisonable structures need to be selectable.

[DaanMeijer]

I agree, this is about drag selection. I'll update the title accordingly.

[charliefoxtwo]

I was going to take this one, but it looks like it was fixed a while back in https://github.com/OpenSAGE/OpenSAGE/pull/318

Tested locally and the behavior seems to be as expected - drag selecting does not allow selection of non-local-player-owned unit.

Potentially a separate issue, however - selecting or drag-selecting a single enemy unit should show the unit or structure's information in the bottom right corner (the little picture and upgrades screen, whatever that's called) regardless of the owner.