def drawBoard(invert=False):
# handle board inversion
redOffset = 9 if invert else 0
greenOffset = 0 if invert else 9
led.allOff()
for i in range(0, 9):
if Board[i] == RED:
led.ledOn(i + redOffset)
elif Board[i] == GREEN:
led.ledOn(i + greenOffset)
def resetAnimation():
# flash existing board
for i in range(0, 2):
led.allOff()
led.wiringpi.delay(SHORT_PAUSE)
drawBoard()
led.wiringpi.delay(SHORT_PAUSE)
led.allOff()
led.wiringpi.delay(LONG_PAUSE)
def playGame():
# set initial conditions
global Turn, Board
Board = [EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY]
moveButtonState = selectButtonState = NOT_PRESSED
nextTurn()
GameState = READY
curSquare = flashCount = readyCount = 0
curPin = squareToPin(curSquare)
led.allOff()
# the game loop
while GameState != GAME_OVER:
flashCount += 1 # increment the flashing led "timer"
if GameState == ANIMATING:
# every READY_ANIMATION_SPEED flashCounts, draw one frame of READY_ANIMATION
if flashCount % ANIMATION_SPEED == 0:
curLeds = ANIMATION[(flashCount / ANIMATION_SPEED) - 1]
if curLeds[0] == END:
# last frame of ANIMATION: reset and back to READY
flashCount = 0
led.allOff()
GameState = READY
wiringpi.delay(MED_PAUSE)
else:
if curLeds[0] == OFF:
# turn these leds off
led.ledsOff(curLeds[1:])
else:
# turn these leds on
led.ledsOn(curLeds)
else:
# flash current square
if flashCount == 1:
led.ledOn(curPin)
elif flashCount == FLASH_ON:
led.ledOff(curPin)
elif flashCount > FLASH_ON + FLASH_OFF:
flashCount = 0
if GameState == READY:
# each flash brings us closer to ANIMATION
readyCount += 1
# get button inputs
moveButton = wiringpi.digitalRead(LEFT_BUTTON_PIN)
selectButton = wiringpi.digitalRead(RIGHT_BUTTON_PIN)
# --- handle select button ---
if selectButton == DOWN:
if selectButtonState == NOT_PRESSED:
# act right away on button press
selectButtonState = PRESSED
flashCount = readyCount = 0
if GameState == ANIMATING:
# stop the animation
GameState = READY
led.allOff()
else:
GameState = PLAYING
# flash selected square and turn it on
for i in range(0, 3):
led.flashOne(curPin, SHORT_PAUSE)
led.ledOn(curPin)
# update Board and check for game over
Board[curSquare] = Turn
winningLine = checkForWin()
if winningLine:
# we have a winner!
GameState = GAME_OVER
# flash winning line
winningAnimation(winningLine)
else:
# no winner, continue on
nextTurn()
curSquare, curPin = nextEmpty(8)
if curSquare < 0:
# no more empty squares? it's a tie!
GameState = GAME_OVER
print " + It's a tie!"
gameTiedAnimation()
nextTurn(False) # flip first player on ties
# clear the other button's state
moveButton = UP
moveButtonState = NOT_PRESSED
else:
if selectButtonState == PRESSED:
selectButtonState = NOT_PRESSED
# pause to avoid button flooding
wiringpi.delay(SHORT_PAUSE)
# --- handle move button ---
if moveButton == DOWN:
if moveButtonState == NOT_PRESSED:
# act right away on button press
moveButtonState = PRESSED
flashCount = readyCount = 0
if GameState == ANIMATING:
# stop the animation
GameState = READY
led.allOff()
else:
# advance the flashing led to the next empty square
led.ledOff(squareToPin(curSquare))
curSquare, curPin = nextEmpty(curSquare)
# clear the other button's state
selectButtonState = NOT_PRESSED
else:
if moveButtonState == PRESSED:
moveButtonState = NOT_PRESSED
# pause to avoid button flooding
wiringpi.delay(SHORT_PAUSE)
if GameState == READY and readyCount > READY_FLASHES:
# too long in READY state? play the ANIMATION for attention!
GameState = ANIMATING
readyCount = 0
# GAME_OVER
led.wiringpi.delay(LONG_PAUSE * 8)
resetAnimation()
