Fix crash when opening bug via level up icon
Remove lazy initialization of book and menu
Fix copy-paste error from 0aafc9fa
Remove unused field
Remove unused define
Indentation
Replace pointer with const reference
Code style
Code style
Use Vec2s
Use Vec2s
Replace direct array access
Code style
Use Vec3f
Code style
Replace pointer with reference
Use Vec3f
Replace component wise operations
Replace direct array access
Code style