orxFLOAT degRotation = 45;			
orxFLOAT radRotation = degRotation * orxMATH_KF_DEG_TO_RAD;
 
orxFLOAT x = orxMath_Cos(radRotation);
orxFLOAT y = orxMath_Sin(radRotation);
 
orxVECTOR directionVector = {x, y, 0};