/**********
Pseudo code for the AirLeak State Machine
***********/

Include headers
Include Libraries needed (AirLeakLib.h)

Define module functions
  SaveHallData
  RandomExclusive

Define module variables
  MyPriority
  CurrentState
  Fan equal 3
  HallData[3]
  previous_HallData[3]
  MachineCounter;
  Indices[] equal {0, 1, 2};

Initialization Function: InitializeAirLeak (param: priority)
  Call library function AirLeak_ReadHallSensors and store current state of hall in previous_HallData
  MyPriority equals priority
  Set CurrentState to be Idle_A
  return true
End Function

Post function: PostAirLeakSM (param: ThisEvent)
  Post ThisEvent in this SM using ES_PostToService()
  Return true if the event was posted, false otherwise
End function

Run function: RunAirLeakSM (param: ThisEvent)
  Create event variable ReturnEvent of type ES_NO_EVENT
  Create event variable NewEvent
  What is the CurrentState?
    CurrentState is Idle_A:
      If ThisEvent.EventType equal to Tot_Inserted
        Call library function AirLeak_MoveGauge with MAX_OXIGEN_LEVEL as position
        Indices[] equal {0, 1, 2} (Assigned with a for loop)
      End if
      If ThisEvent.EventType equal to Leak_Develops
        Save system time in variable SysTime
        Call RandomExclusivew/ param SysTime. Set Fan to what func returns
        Call library function AirLeak_FanControl to turn Fan On
        Init AIRLEAK_TIMER with STEP_TIME
        Save CurrentState equal to FanOn
		    Increment MachineCounter
		  End if
      If ThisEvent.EventType equal to End_Of_Game or RST
        MachineCounter equal 0
      End if

    CurrentState is FanOn:
      Call library function  AirLeak_QueryGauge to get current Oxygen_Level
      If TIME_OUT and Oxygen_Level greater than 0
        Call library function AirLeak_MoveGauge to decrement oxygen level, pass as param Oxygen_Level - STEP_OXIGEN
        Init AIRLEAK_TIMER with STEP_TIME
      Else If TIME_OUT and Oxygen_Level less or equal to 0
        Post to all events End_Of_Game with parameter Game_Over
        Call library function AirLeak_FanControl to turn Fan Off
        Set CurrentState to Idle_A
        and set Fan to 3, an invalid Fan
      End if
      If ThisEvent.EventType equal to AirflowPlugged
        Call library function AirLeak_FanControl to turn Fan Off
        Post Interaction_Completed to Arcade_SM
        Call library function AirLeak_MoveGauge with MAX_OXIGEN_LEVEL as position
        Set CurrentState to Idle_A
        and set Fan to 3, an invalid Fan
      End if
      If ThisEvent.EventType equal to RST
        Call library function AirLeak_FanControl to turn Fan Off
        FanIndex equal 0
        MachineCounter equal 0
        Set CurrentState to Idle_A
        and set Fan to 3, an invalid Fan
      End if
      If ThisEvent.EventType equal to End_Of_Game
        Call library function AirLeak_FanControl to turn Fan Off
        FanIndex equal 0
        MachineCounter equal 0
		Set CurrentState to Idle_A
        and set Fan to 3, an invalid Fan	
      end if

  Return ReturnEvent
End Function

Checker Function: AirPlugChecker (no param)
  Create event variable ReturnEvent
  Create bool variable ReturnVal equal false
  Call library function AirLeak_ReadHallSensors(HallData) to obtain current HallData
  If Fan is less than 3
    If HallData of Fan equals 0
      Post to this SM event Airflow_Plugged
      Call SaveHallData() to save HallData as previous_HallData
      ReturnVal equal true
    End if
  End if
  If HallData is different from previous_HallData
    Post to ResetService the event Airflow_Plugged
    Call SaveHallData() to save HallData as previous_HallData
    ReturnVal equal true
  End if
  Return ReturnVal
 End Function

Function: SaveHallData (no param)
  For every hall sensor
		Copy array by element from HallData to previous_HallData
  End for
End Function

Function: RandomExclusive(param: SysTime)
  Create variable ReturnVal
  Create variable counter equals 3 - MachineCounter
  If counter is valid (greater than 0)
    Get remainder of the division SysTime by the counter
    Set ReturnVal as the element of Indices at remainder position
    Remove that element from Indices with a for loop
      Create auxiliary variable n equal remainder
      For loop starting at n and repeat until n is less than 3
        Over write n element of Indices with element n+1
      End for
  End if
  return ReturnVal
End Function