Is it possible to gave a physics object that is not affected by gravity?

I'd like to implement a object that is controlled by mouse movement and the movement of that object to affect other physics objects. Like a bat controlled by the player hitting a ball.

I hoped to do this with phent_addcentralforce and setting the mass to 0 but with the mass set phent_addcentral force does not seem to apply. If I don't set mass then the object falls to the gound.

I actually find that an entity with just a c_setminmax works fine. The entity shoves into the physics object a little, but it does interact properly.

I came up with this "3D Cursor" concept for a project that I'm working on:

Code:

---

ENTITY* cur_ent;
BMAP* cur= "rcursor.pcx";

void curent()
{
	cur_ent= me;
	c_setminmax(me);
	my.scale_x= 0.25;
	my.scale_y= 0.25;
	my.scale_z= 0.25;
	while(1)
	{
		my.pan= camera.pan - 90;
		my.tilt= camera.roll;
		my.roll= camera.tilt;
		mouse_dist+= mickey.z * 0.1;
		vec_set(curpos,vector(mouse_cursor.x,mouse_cursor.y,mouse_dist + 50));
		vec_for_screen(curpos,camera);
		cur_ent.x= curpos.x;
		cur_ent.y= curpos.y;
		cur_ent.z= curpos.z;
		wait(1);
	}
}

and a function for switching between 2D and 3D mouse cursors:

void _3dcur_toggle()
{
	if(cur_mode== 1)
	{
		if(mouse_ent== cur_ent)
		{
			ent_remove(cur_ent);
			snd_play(toggle_,100,0);
			spawn_mode= 0;
		}
		else
		{
			cur_mode= 0;
		}
		mouse_map= cur;
		mouse_dist= 0;
		wait(3);
	}
	if(cur_mode== 0)
	{
		snd_play(toggle_,100,0);
		ent_create("cur.mdl",nullvector,curent);
		cur_mode= 1;
		spawn_mode= 1;
		mouse_map= NULL;
	}
}

---

You may want to change the images, the model, and the camera synchronization calculations (my "cur.mdl" is oriented incorrectly in MED). Other than that, good luck!

Hope this helps