GRIM: Remove unneeded TextObject constructor
GRIM: Initialize all Sector members
GRIM: Initialize all members of SaveGame
GRIM: Remove _deltaSize from the blocky classes as it is only used locally
GRIM: Initialize all members of ModelNode
GRIM: Make Actor only use one constructor and initialize all members
GRIM: Calculate length instead of repeatedly calling strlen
GRIM: Reduce calls to getCurrSet
GRIM: Reduce calls to getNormal
GRIM: Reduce calls to getPos