Full 4 engine capabillity

[VonBeerhofen]

Finally managed to implement start/stop functions for engines 3 & 4, thanks to two unused entries in the key bindings array. The two keys are actually used elswhere as well to control keyboard throttle up/down (+/-)  movement. The rewritten routines do NOT interfere with this behaviour as long as planes don't have engines 3 & 4, so it will still work on single and twin engined planes. The EAW/INI still allows remapping of these keys and I will pprobably adapt their text entries to show the duality of these keys.

With the added feature it's not yet clear if more needs to be done in respect to the already adapted engine overheat/damage routines but I think when we test these features in our online games in the Launchpad any negative behaviour will soon surface. Offline I've not seen any anomalous behaviour sofar but it's still early days, so fingers crossed!

BTW, if my decrepid computer allows new startup sounds for the Quads will be implemented (already downloaded some). It'll require a bit more memory and I can't really say if my current install can handle much more. Shouldn't be a problem on newer computers with sufficient memory though, so I'll add them anyway. They can be removed from the gamefolder if necessary.

VonBeerhofen

Edited October 7, 2019 by VonBeerhofen

[RIBob]

I always enjoy  your contributions.  I appreciate your  devotion to the EAW sim.  Thank you for being so friendly to me  during our many discussions.