struct Position
real x
real y
real z

method NewPosition takes real NewX, real NewY, real NewZ returns nothing
set this.x = NewX
set this.y = NewY
set this.z = NewZ
endmethod

method MovePosition takes real PlusX, real PlusY, real PlusZ returns nothing
set this.x = this.x + PlusX
set this.y = this.y + PlusY
set this.z = this.z + PlusZ
endmethod

endstruct