float GetFOV( D3DXVECTOR4 forward, D3DXVECTOR4 EnemyPos, D3DXVECTOR4 LocalPos )
	{
		D3DXVECTOR4 vec1, vec2;
		D3DXVec4Normalize( &vec1, &forward );
		D3DXVec4Normalize( &vec2, &( EnemyPos - LocalPos ) );
		float angle = acos( D3DXVec4Dot( &vec1, &vec2 ) );

		return 180.f - D3DXToDegree( angle );
	 }