Wow!
I needed other 6 hours to get my code run which is 14 lines long and than you come with i code which is nearly 1/4 of mine and seems to be very smiple

I made it like that:
Code:

---

	Playerpos_rel.x = my.x - LeiterP.x; //Calculates the relative Playerposition in x direction
	Playerpos_rel.y = my.y - LeiterP.y; //Calculates the relative Playerposition in y direction
	if(sin(Leiter_pan) != 0 && sin(Leiter_pan) != 1 && sin(Leiter_pan) != -1) //Leiter_pan != ...,-180,-90,0,90,180,...
	{
		if((Playerpos_rel.y/tan(Leiter_pan)) > LeiterP.x) {Vorderbei = 1;} //Playerentity is in front
	}
	if(sin(Leiter_pan) == 0) //Leiter_pan == 0,180,...
	{
		if(my.y < LeiterP.y) {Vorderbei = 1;} //Playerentity is in front
	}
	if(sin(Leiter_pan) == 1 || sin(Leiter_pan) == -1) //Leiter_pan == ...,-90,90,...
	{
		if(my.x > LeiterP.x) {Vorderbei = 1;} //Playerentity is in front
	}

---

Dark_samurai