envsound

function RTS.cams:switchExt(onoff)
	if onoff then
		mn.runSEXP("( set-sound-environment !Arena! ) ")
		mn.runSEXP("( adjust-audio-volume !Music! 0 500 )")
		mn.runSEXP("( adjust-audio-volume !Effects! 50 500 )")
		self.data.ext = true
	else
		mn.runSEXP("( set-sound-environment !! ) ")
		mn.runSEXP("( adjust-audio-volume !Music! 100 500 )")
		mn.runSEXP("( adjust-audio-volume !Effects! 100 500 )")
		self.data.ext = false
	end
end