walk

from ggame import App
from ggame import ImageAsset, Sprite, Frame
import time

### create sprite from spritesheet
#
#VIEW IMAGE - https://github.com/tiffinschool/pythonChallenges/blob/master/characterSheet96x96.png
#REFERENCE URL - https://ggame.readthedocs.io/en/latest/ggameapi.html#sprite
#USAGE - ImageAsset(url, frame=None, qty=1, direction='horizontal', margin=0)

manFrame = Frame(0,0,96,96)
manImage = ImageAsset("characterSheet96x96.png",manFrame,16,'horizontal',0)
manSprite = Sprite(manImage,(100,100))
runningRightIndexes = [2,3]
lastTimeMovedRight = 0

### bind event listeners
#
#REFERENCE URL - https://ggame.readthedocs.io/en/latest/ggameapi.html#ggame.asset.Frame
#USAGE - listenKeyEvent(eventtype, key, callback)

#moves man right including animation
def moveManRight(e):
    global manSprite, lastTimeMovedRight
    manSprite.x += 2
    if (time.process_time() > lastTimeMovedRight + 0.1): #only update the appearance every 0.1 seconds
        lastTimeMovedRight = time.process_time()
        manSprite.index = nextElement(runningRightIndexes, manSprite.index)

#helper function - returns next element within array relative to specified element
def nextElement(arr,elem):
    if (elem in arr):
        return arr[(arr.index(elem)+1)%len(arr)]
    return arr[0]

#resets appearance to standing
def standStraightMan(e):
    global manSprite
    manSprite.index = 0 #index = 0 is the standing appearance
    
App().listenKeyEvent("keydown","right arrow",moveManRight)
App().listenKeyEvent("keyup","right arrow",standStraightMan)
 
 
### Challenges
#
# 1. add an event so that the man can also run left when you press the left key
# 2. when the man runs left the appearance needs to change so he is facing left etc.
# 3. replace the man spritesheet with the ninja cat spritesheet  which can be found here:
# https://github.com/tiffinschool/pythonChallenges/blob/master/catSpriteSheet64x64.png


App().run()