*********Pseudo-code for the Rainwater state machine module***********

**** #includes ****

pwm library
a/d library
header file to post event to points service
header file to generate random number



**** module level variables ****

LitColumn (stores 1,2,3)
CurrentState
MyPriority
PotPosition (stores 1,2,3)


**** public functions ****

InitalizeRainwater()

Takes a priority number, returns True. 

Initialize the MyPriority variable with the passed in parameter.

Call Timer Inits for RainTimer
Initialize PWM pin of servo and Servo.write to home positon
Initialize potentiometer input A/D pin
Initialize led pins 1,2,3 (for each column)

Set CurrentState to RainwaterPseudoState
Pass ES_INIT event to the post function of this service

end InitalizeRainwater




RunRainwater()

Takes an Event and returns an ES_NO_EVENT

Initialize local variable NextState
Set NextState to CurrentState

Case CurrentState:

	CurrentState is RainwaterPseudoState
		if ThisEvent is ES_INIT
			Pulse all LEDs (welcome speed)
			NextState = Welcome			
	end RainwaterPseudoState
	
	CurrentState is Welcome
		if ThisEvent is GAME_START
			Turn off all LEDs
			Start RainTimer to 5 seconds
			NextState = Waiting			
	end Welcome
	
	CurrentState is Waiting
		if ThisEvent is RAIN_TIMER_TIMEOUT
			Start RainTimer to 5 seconds
			Pulse a random (1,2,3) LED
			Store the LED lit in LitColumn
			NextState = Raining
		if ThisEvent is RESET
			Clear RainTimer
			Pulse all LEDs (welcome speed)
			NextState = Welcome			
	end Waiting block
	
	CurrentState is Raining
		if ThisEvent is RAIN_TIMER_TIMEOUT
			Start RainTimer to 5 seconds
			if Match()==True
				Post Points to PointsService
			Turn off LitColumn LED
			NextState = Waiting
		if ThisEvent is RESET
			Clear RainTimer
			Pulse all LEDs (welcome speed)
			NextState = Welcome
		if ThisEvent is GAME_OVER
			Pulse all LEDS (fast speed)
			Clear RainTimer
			NextState = Celebration
	end Raining
	
	CurrentState is Celebration
	if ThisEvent is RESET
			Pulse all LEDs (welcome speed)
			NextState = Welcome
	end Celebration

end Case

Set CurrentState to NextState

return ES_NO_EVENT

end of RunMaster()



***** event checkers *****

MapServo()

Void input, returns false always

Initialize local variable PotentiometerInput
Read A/D converted value from pot and store in PotentiometerInput
Map PotentiometerInput to PotPosition (1,2 or 3 only)
Map PotentiometerInput to Servo angle (in terms of PWM argument required)
Write that angle value to the Servo

return false

end MapServo


***** private functions *****







****************************End Rainwater*****************************