from cs1graphics import  *
from bullseye import *
from math import *
from time import *

class DartsHandler(EventHandler):
    def __init__(self,paper):
        self._paper=paper
        EventHandler.__init__(self)

    def handle(self,event):
        if event.getDescription() == 'mouse click': # if mouse is clicked
            p=event.getMouseLocation()
            throwDart(self._paper,p)
        else:
            pass

class ExitButtonHandler(EventHandler):
    def __init__(self,textObj):
        self._text=textObj
        EventHandler.__init__(self)

    def handle(self,event):
        # if mouse is clicked
        if event.getDescription() == 'mouse click':
            self._text.setMessage('Good Buy!')
            sleep(3)
            print 'Exit program'
            exit(0) # forced termination of the program
        else:
            pass
            

class Dart(Drawable):
    def __init__(self,tipCol='yellow',shaftCol='dark green',flightCol='yellow'):
        Drawable.__init__(self)
        self._arrow=Polygon(Point(10,0),Point(15,10),Point(5,10))
        self._arrow.setFillColor(tipCol)

        self._shaft=Rectangle(2,20,Point(10,20))
        self._shaft.setFillColor(shaftCol)

        self._flight=Polygon(Point(3,37),Point(10,30),Point(17,37),Point(17,44),Point(12,48),Point(8,48),Point(3,44))
        self._flight.setFillColor(flightCol)

        self._flightLine=Path(Point(10,30),Point(10,48))

        #adjusting reference points to be the tip of the arrow
        self._shaft.adjustReference(0,-20)
        self._flight.adjustReference(7,-37)
        self._flightLine.adjustReference(0,-30)

    def _draw(self):
        self._beginDraw()
        self._arrow._draw()
        self._shaft._draw()
        self._flight._draw()
        self._flightLine._draw()
        self._completeDraw()

def throwDart(paper,point):
    # drawing a dart
    d=Dart()

    # rotating
    d.rotate(30)
    
    # moving to the left bottom corner of the graphics window
    d.moveTo(0,paper.getHeight()-20)

    # adding dart to the graphics window
    paper.add(d)
    
    # animation

    for i in range(100):
        stepX=(point.getX()-d.getReferencePoint().getX())/float(100-i)
        print 'target pointX:%d, pointX of dart:%d'%(point.getX(),d.getReferencePoint().getX())
        print 'stepX=%f'%stepX
        stepY=(point.getY()-d.getReferencePoint().getY())/float(100-i)
        print 'target pointY:%d, pointY of dart:%d'%(point.getY(),d.getReferencePoint().getY())
        print 'stepY=%f'%stepY
        
        if i%5 ==0:
            d.rotate(1)
        d.move(stepX,stepY)
      

def main():

    paper=Canvas(700,600,'light yellow','Dart Board')
    w,h=700,600

    # drawing Dart Board
    b=Bullseye(5,60,'black','red')
    b.move(w/2,h/2)
    paper.add(b)

    # adding comment for user
    text=Text('Click anywhere in the graphics window to send a dart',12,Point(w/2,h-40))
    paper.add(text)

    # drawing Exit button
    exitButton=Rectangle(60,20,Point(w-40,h-20))
    exitButton.setFillColor('light green')
    exitText=Text('Exit',12,Point(w-40,h-20))
    paper.add(exitButton)
    paper.add(exitText)

    #throwing darts
    darts=DartsHandler(paper) # creating darts handler
    exitB=ExitButtonHandler(text) # creating exit button handler
    exitT=ExitButtonHandler(text) # creating exit button handler
    exitButton.addHandler(exitB) # activating exit button handler
    exitText.addHandler(exitT) # activating exit button handler
    paper.addHandler(darts) # activating darts handler
     
main()