I thought on a very simple but effective system.
- At first you have the randomized normal music.
- See an enemy and the normal battlescape music stop playing and the track position
will be remembered. Now immediately start the random action/intense music (could be the same
for the whole mission and determined on mission start like the random battlescape music).
- If everything is clear again, do not wait for the turn to end. Instead slowly fade out
the action music and continue playing and fade in the normal battlescape music again (same track
as usually and same position it was paused).
To ensure the next move will not reveal a alien again, this can alternatively happen at turn end and the
hidden movement if there is no new contact at the beginning of the next turn. Maybe better this way.
Special transition music are not needed. Only volume changes to build up fade effects.
Unfortunately I have no free music to offer for this feature (only from other games/movies). I was hoping
for this as optional feature for modders and people who use their own music for this. It can be
action music or even a intense horror music. As anyone likes to build up the atmosphere in danger situations.
I understand this can eventually not be easily implemented. But at least I can try and ask