As a after thought to this .. is it possible to have a model and light appear at the impact area?
like the explosion seen when heat or a sabot impacts from a tank.
what do you mean exactly?
it is possible to let all sort of things appear and disapear by using the 'drop'-command. the problem is to calculate the position of parts that are not the same model as the tank over a longer period of time. therefore it is not possible to build tanks with multiple turrets (or at least with a LOT LOT LOT of scripting which isn't released yet ->
RHS video )
if you mean things like prominent metal parts after an rpg-impact, etc: you can let something appear that is part of the tank model by using hidden selections. but atm i can't think of any way to detect where your tank was hit and therefore which hidden selection has to be made visible.
but i also might be completely wrong