The following code can be used to prevent the player from either receiving fall damage, or from hitting 'terminal velocity', which results in death upon hitting the ground.
You'll need a single gamevar to hold the value of falling_counter.
gamevar fallcounter 0 1
Inside the APLAYER actor, use the following code to restrict the falling counter to prevent falling deaths:
getplayer[THISACTOR].falling_counter fallcounter
ifvarg fallcounter 60 // not 61, because there's a slim chance the number won't set properly in time
{
setvar fallcounter 60 // any value under 62 is non-fatal
setplayer[THISACTOR].falling_counter fallcounter
}
To prevent ANY fall damage to the player, change it to the following
getplayer[THISACTOR].falling_counter fallcounter
ifvarg fallcounter 7 // not 8, because there's a slim chance the number won't set properly in time
{
setvar fallcounter 7 // any value under 9 does no damage
setplayer[THISACTOR].falling_counter fallcounter
}