@Blink: Try this
Code:

---

function Shield()
{
	my.passable = on;
	my.transparent = on;
	my.red = 0;
	my.green = 0;
	my.blue = 255;
	my.light = on;
	
	you = my.parent;
	vec_set(my.scale_x,you.scale_x);
	vec_scale(my.scale_x,my.skill3);
	
	var MaxEnergy;
	MaxEnergy = my.skill1;
	
	var Temp1;
	
	while(you)
	{
		vec_set(my.x,you.x);
		vec_set(my.pan,you.pan);
		
		if(you.skill2 > 0){my.skill1 += min(my.skill1+you.skill2,MaxEnergy); you.skill2 = 0;}
		if(you.skill1 < 100 && my.skill1 > 0)
		{
			my.alpha = my.skill2;
			Temp1 = min(my.skill1,100-you.skill1);
			my.skill1 -= Temp1;
			you.skill1 += Temp1;
		}
		if(my.alpha > 0){my.alpha -= time_step;}
		
		wait(1);
		you = my.parent;
	}
}

string ModelFileName;
function Shield_Activate(Pointer,ShieldEnergy,ShieldAlpha,ShieldScale)
{
	you = Pointer;
	if(you)
	{
		str_for_entfile(ModelFileName,you);
		
		you = ent_create(ModelFileName,nullvector,Shield);
		you.parent = Pointer;
		you.skill1 = ShieldEnergy;
		you.skill2 = ShieldAlpha;
		you.skill3 = ShieldScale;
	}
}

---

Add this at the top of the plBiped01.wdl (make a backup of that file before...)
and write this at the end of the action PlBiped01:
Shield_Activate(my,100,40,1.13);
The players armor is the shield enegy to start with.

I wasn´t able to test this so if you get any errors, just post your error message here.