[KJS]

it wouldn't be that hard to add in a weight script.
like you would have to set a string flag something like playerminusmovement=0
//0 would mean move normal
and with like each stone you would have it add .01 to that string or something like that.

then in a system weapon you would put like when the player moves you have it
playerx-#v(playerminusmovement)

something like that