[SCRIPTING] STUCK IN A WHILE LOOP

class Game_Interpreter
  def missionListCreate
    #Clean out the list of any old entries
    $mission_list.clear
    #Get the size of the mission array.
    @size = $mission.size
    #Where are we in the array
    @index = 0
    #Determines if location 1 is already full
    @loc1 = 0
    #Determines if location 2 is already full
    @loc2 = 0
    #Determines if location 3 is already full
    @loc3 = 0
    #Determines of location 4 is already full
    @loc4 = 0
    #Determines if we're done
    @done = 0
    #Determines current location in the $mission_list array
    @current = 0
    #Holder for the location of $mission.location
    @currentloc = 0
    #Start our loop
    while @done == 0
      #Check to see if the mission is available, which is value 1 on completed
      if $mission[@index].completed == 1
        #Set the location of the mission.
         @currentloc = $mission[@index].location
          #Check to see if location of the mission is 1
          if @currentloc == 1
            #See if any other missions have been there on this list
            if @loc1 == 0
              @loc1 = 1
              $mission_list[@current] = $mission[@index]
              @current += 1
            end
          end    
          #Check to see if location of the mission is 1
          if @currentloc == 2
            #See if any other missions have been there on this list
            if @loc2 == 0
              #Set location as used, add mission, increment location in mission 
              # list
              @loc2 = 1
              $mission_list[@current] = $mission[@index]
              @current += 1
            end
          end
          #Check to see if location of the mission is 1
          if @currentloc == 3
            #See if any other missions have been there on this list
            if @loc3 == 0
              #Set location as used, add mission, increment location in mission 
              # list
              @loc3 = 1
              $mission_list[@current] = $mission[@index]
              @current += 1
            end
          end
          #Check to see if location of the mission is 1
          if @currentloc == 4
            #See if any other missions have been there on this list
            if @loc4 == 0
              #Set location as used, add mission, increment location in mission 
              # list
              @loc4 = 1
              $mission_list[@current] = $mission[@index]
              @current += 1
            end
          end
          #check if there is no location set.
         if @currentloc == 0
           #Add mission, increment location in mission list
              $mission_list[@current] = $mission[@index]
              @current += 1
          end 
        end  
      #Make sure we're not going past the size of $mission  
      if @size == @index + 1
        @done = 1
      end
      #Make sure we're not adding more than 5 missions
      if $mission_list.size == 5
        @done = 1
      end
      #Increment where we are in $mission
      @index += 1
    end
  end
end

$mission[0].finish(1)
$mission[1].finish(1)
$mission[2].finish(1)

missionListCreate

SceneManager.call(Scene_MissionSelect)