Lua bugfixes

Author: fourZK

Base.rte/Devices/Tools/GrappleGun/Grapple.lua

@@ -377,7 +377,7 @@ function Update(self)
 					local jointStiffness;
 					local target = self.target;
 					if target.ID ~= target.RootID then
-						local mo = MovableMan:GetMOFromID(target.RootID);
+						local mo = target:GetRootParent();
 						if mo.ID ~= rte.NoMOID and IsAttachable(target) then
 							-- It's best to apply all the forces to the parent instead of utilizing JointStiffness
 							target = mo;

Techion.rte/Devices/Shared/Scripts/PulseShot.lua

@@ -27,6 +27,7 @@ function Update(self)
 	self.EffectRotAngle = self.Vel.AbsRadAngle;
 end
 function PulsarDissipate(self, inverted)
+	self.lastVel = self.lastVel or Vector(self.Vel.X, self.Vel.Y);
 
 	local trace = inverted and Vector(-self.Vel.X, -self.Vel.Y):SetMagnitude(GetPPM()) or Vector(self.Vel.X, self.Vel.Y):SetMagnitude(self.Vel.Magnitude * rte.PxTravelledPerFrame + 1);
 	local hit;