Init of power ups
Merge remote-tracking branch 'origin/master' into Power-ups
Merge
PowerUps Update + Activate

The base class move the power up to the center if the bool m_hasSpawned
is set to true
Merge remote-tracking branch 'origin/master' into Shield-2
Physics and shield edits

La till funktion för boll sköld kollision i fysik klassen samt ändrade i
sköld klassen.