Enable HITOWNER on bounce for grenades (small hack was required), flak shrapnel, ripper blades.

Enable HITOWNER on biosludge after colliding with a surface. Not needed, but just done for the sake of it.
Enable HITOWNER on guided redeemer missiles after they're far away from the shooter.

zscript/biorifle.zsc

@@ -303,6 +303,7 @@ Class BioGel : Actor
 	// align self to what surface was hit, currently does not support 3d floors + slopes properly
 	virtual void AlignSelf()
 	{
+		bHITOWNER = true;
 		A_NoGravity();
 		A_Stop();
 		if ( bAMBUSH )

zscript/eightball.zsc

@@ -192,6 +192,7 @@ Class UTGrenade : UTRocket
 	Default
 	{
 		DamageType 'GrenadeDeath';
+		Damage 1;	// needs to be nonzero for self-hit to work (might send a PR to fix this later)
 		-NOGRAVITY;
 		+USEBOUNCESTATE;
 		-BOUNCEAUTOOFF;
@@ -229,6 +230,7 @@ Class UTGrenade : UTRocket
 			rollvel = FRandom[Eightball](-16,16);
 			pitchvel = FRandom[Eightball](-16,16);
 			anglevel = FRandom[Eightball](-16,16);
+			bHITOWNER = true;
 		}
 		Goto Spawn;
 	Death:

zscript/flakcannon.zsc

@@ -209,6 +209,7 @@ Class FlakChunk : Actor
 	}
 	action void A_HandleBounce()
 	{
+		bHITOWNER = true;
 		A_SprayDecal("WallCrack",-8);
 		int numpt = Random[Flak](2,3);
 		if ( frame < 10 )
@@ -399,6 +400,7 @@ Class FlakSlug : Actor
 		for ( int i=0; i<6; i++ )
 		{
 			p = Spawn("FlakChunk",pos);
+			p.bHITOWNER = true;
 			a = FRandom[Flak](0,360);
 			s = FRandom[Flak](0,0.2);
 			Vector3 dir = (x+y*cos(a)*s+z*sin(a)*s).unit();

zscript/ripper.zsc

@@ -136,6 +136,7 @@ Class Razor2 : Actor
 	Bounce:
 		RAZB A 0
 		{
+			bHITOWNER = true;
 			Vector3 dir = vel.unit();
 			A_SetAngle(atan2(dir.y,dir.x));
 			A_SetPitch(asin(-dir.z));

zscript/utcommon.zsc

@@ -933,7 +933,7 @@ Class UTMainHandler : StaticEventHandler
 		while ( bi.Next() )
 		{
 			Actor a = bi.Thing;
-			if ( !a || !a.bSHOOTABLE || !Source.CheckSight(a,0xf) || (a == Source) )
+			if ( !a || !a.bSHOOTABLE || !Source.CheckSight(a,0xf) || (a == Source) || (Source.Distance3D(a) > ExplosionRadius) )
 				continue;
 			Vector3 midpoint = a.Vec3Offset(0,0,a.height*0.5);
 			a.vel += Level.Vec3Diff(Source.pos,midpoint).unit()*(MomentumTransfer/(Thinker.TICRATE*a.mass));

zscript/warheadlauncher.zsc

@@ -357,15 +357,22 @@ Class GuidedWarShell : WarShell
 {
 	double lagangle, lagpitch, lagroll, lagangle2, lagpitch2, lagroll2,
 		guideangle, guidepitch, guideroll;
+	bool justleft;
 
 	override void PostBeginPlay()
 	{
 		Super.PostBeginPlay();
 		if ( target && target.player ) target.player.camera = self;
+		justleft = true;
 	}
 	override void Tick()
 	{
 		Actor.Tick();
+		if ( justleft && (Distance3D(target) > (2*max(target.radius,target.height))) )
+		{
+			justleft = false;
+			bHITOWNER = true;
+		}
 		if ( globalfreeze || level.frozen ) return;
 		if ( !bMISSILE ) return;
 		if ( !target || !target.player || (target.Health <= 0) )