Cooperative gameplay improvements

[SYN_Vander]

Some very welcome features:

 

Description: The ability to spawn only planes that have a player in the slot.

Ideally this should be an option per plane you set in the mission editor ('Do not spawn if empty slot' ). Optional: Make this a tickbox in the lobby screen, affecting all planes. Anyone may set this.

 

Benefit: It's possible to have many coop slots in a mission. In the current version if you have many slots in a mission and only a few players show up it has a severe performance impact on the server because of the many AI.

 

And an old one:

 

The ability to take the slot of an AI aircraft while a mission is already running