Basic Game Logic - 3D Game Development Practical Introduction - page 177

61.
62. }

63. }

64. }

65.}

Listing 34: Holder script

The idea of the script is simple: when the player presses E key, we make sure that there
is no object in hand. If this is true, we try to find a suitable object to hold. If such object
is found, the holder holds it. On the other hand, if there is already an object in hand, this
object is released. The variable objectInHand stores the object that is currently hold. If the
value of this variable is null , it means that no object is in hand (line 19).