It shouldn't be really hard to do. Just copy a weapon 4 times, and make each weapon explode into 2 clusters from the next weapon, until the last one, which simply explodes without any clusters.
Basically, if you want to apply this to the grenade :
kWeaponGrenade : explodes into 2 kWeaponGrenadeCluster1 (total clusters : 2 )
kWeaponGrenadeCluster1 : explodes into 2 kWeaponGrenadeCluster2 (total clusters : 4 )
kWeaponGrenadeCluster2 : explodes into 2 kWeaponGrenadeCluster3 (total clusters : 8 )
kWeaponGrenadeCluster3 : explodes into 2 kWeaponGrenadeCluster4 (total clusters : 16 )
kWeaponGrenadeCluster4 : explodes into 2 kWeaponGrenadeCluster5 (total clusters : 32 )
kWeaponGrenadeCluster5 : explodes into 2 kWeaponGrenadeCluster6 (total clusters : 64 )
kWeaponGrenadeCluster6 : explodes into 2 kWeaponGrenadeCluster7 (total clusters : 128 )
kWeaponGrenadeCluster7 : explodes. (end)
Yes, it's long and annoying, but there isn't any other way. Anyway, it's just a lot of copy/paste. I assume you know how to create custom clusters. Good luck.
Also, how have you found this forum ? It was not supposed to be officially opened, but nevermind...
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