// updates an enemy with fighter type attacker
void EnemyControl::updateAttacker(Enemy& e, float deltaT){
	float bounceY = abs(spawnControl.outerAltitude - spawnControl.innerAltitude);
	float vLength = sqrtf(e.vel.x*e.vel.x + e.vel.y*e.vel.y + e.vel.z*e.vel.z);
	float pLength = sqrtf(e.pos.x*e.pos.x + e.pos.y*e.pos.y + e.pos.z*e.pos.z);
	float g = 14000.0f * vLength / (pLength*pLength);
	// update enemy position
	e.pos.x += deltaT * e.vel.x;
	e.pos.y += deltaT * e.vel.y;
	e.pos.z += deltaT * e.vel.z;
	// update enemy velocity direction
	if(e.fromX){
		e.vel.x += g * 4.0f * deltaT;
	}else{
		e.vel.x -= g * 4.0f * deltaT;
	}
	e.vel.y += g * bounceY * deltaT;
	if(e.fromZ){
		e.vel.z += g * 4.0f * deltaT;
	}else{
		e.vel.z -= g * 4.0f * deltaT;
	}
	// don't do this every time for performance
	if(vLength < (e.speedLength * 0.9)){
	// load e.vel into vector, normalize vector, rescale to speed, then store back in e.vel
		XMStoreFloat3(&e.vel, XMVector3Transform(XMVector3Normalize(XMLoadFloat3(&e.vel)), XMMatrixScaling((float)e.speed, (float)e.speed, (float)e.speed)));
	}
}