Okay... I managed to get it working in AIMNAS. Pretty nice feature. :pitchfork:

Not sure if it is intended that a single handgrenade (even a small M67) can bring down an entire roof (and the building with it). Seems a bit overpowered.

I already powered it down quite a bit compared to stock 1.13 (1.13 values in parenthesis):

Damage 5 (10)
Stun Damage 5 (10)
Volatility 0 (2)
Final Radius 1 (1)
Mag Size 1 (1)
Fragments 5 (70)
Frag Type Ball small (Ball)
Frag Damage 5 (22)
Frag Range 5 (100)
Horz Degree 60 (60)
Vert Degree 2 (2)
Directional yes (no)

Result: Small grenade thrown on a roof on a 8 x 11 building brings down the complete roof.

I'd say this is still too good... A grenade should have a chance to damage the roof (not automatically destroy it 100% of the time), and not bring down the entire thing.

Tests were made on flat roofs and regular slant house roofs.

Any idea what's going wrong or is it intended?