Python flask game not initializing

Question

I have my flask file and a seperate file which contains a pygame. Both work seperately, How would i combine the flask so that when i press my link on my webpage it starts running the external file, how would I call it?

from flask import Flask, render_template
import going
app = Flask(__name__)

@app.route('/')
def index():
return render_template('index.html')

@app.route('/my-link/')
def my_link():
   return going.main()

if __name__ == '__main__':
   app.run(debug=True)

At the moment I am trying to run the main() method to initialize the program.

import pygame
##1100 * 800
size = [1100, 800]
score1 = 0
score2 = 0
blue = (100, 149, 237)
black = (0, 0, 0)
brown = (165,42,42)
white = (255, 255, 255)
green =(0,100,0)
red = (255,0,0)
dark_red = (200,0,0)
grey = (100,100,100)
other_grey = (0,0,100)
background = 'Mahogany.jpg'
pass_count = 0
player = 1
clock = pygame.time.Clock()

class Player(object):
    def ___init__(self,id):
        self.id = 1
    def quitGame(self):
        pygame.quit()
        quit()
    def pass_turn(self):
        global pass_count
        pass_count += 1
        if pass_count == 2:
            quitGame()      
    def score(player_text, score):
        return player_text + str(score) 


class Stone(object):
    def __init__(self,board,position,color):
        self.board = board
        self.position = position
        self.color = color
        self.placeStone()
    def placeStone(self):
        coords = (self.position[0] * 50,  self.position[1] * 50)
        pygame.draw.circle(self.board,self.color,coords,20,0)

        pygame.display.update()

class Board(object):    
    def draw_board(self):
        for i in range(12):
                for j in range(12):
                    rect = pygame.Rect(55 + (50 * i), 100 + (50 * j), 50, 50)
                    pygame.draw.rect(background, blue, rect, 1)
        screen.blit(background, (0,0))
        pygame.display.update()

    def text_objects(self,text, font):
        textSurface = font.render(text, True, black)

        return textSurface, textSurface.get_rect()

    def button(self,msg,x,y,w,h,ic,ac,action = None):
        mouse = pygame.mouse.get_pos()
        click = pygame.mouse.get_pressed()
        if x+w > mouse[0] > x and y+h > mouse[1] > y:
            pygame.draw.rect(screen, ac,(x,y,w,h))

            if click[0] == 1 and action != None:
                action()
        else:
            pygame.draw.rect(screen, ic,(x,y,w,h))

        smallText = pygame.font.Font("freesansbold.ttf",20)
        textSurf, textRect = self.text_objects(msg, smallText)
        textRect.center = ( (x+(w/2)), (y+(h/2)) )
        screen.blit(textSurf, textRect)
    def game_intro(self):

        intro = True
        while intro:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    quit()

            screen.blit(background, (0,0))
            largeText = pygame.font.SysFont("comicsansms",60)
            TextSurf, TextRect = self.text_objects("GONLINE", largeText)
            TextRect.center = ((1100/2),(800/2))
            screen.blit(TextSurf, TextRect)

            self.button("Play!",200,500,100,100,grey,other_grey,self.play_game)
            self.button("Quit!",700,500,100,100,red,dark_red,Player.quitGame)

            pygame.display.update()
            clock.tick(15)
    def play_game(self):
        width = 20
        height = 20 
        space_between = 5 

        global player
        finish = False
        self.draw_board()
        while not finish:


            for event in pygame.event.get():
                if event.type == pygame.QUIT:  
                    finish = True  
                elif event.type == pygame.MOUSEBUTTONDOWN and player == 1:
                    position = pygame.mouse.get_pos()
                    if (event.button == 1) and (position[0] > 55 and position[0] < 710) and (position[1] > 100 and position[1] < 750):
                        x = int(round(((position[0]) / 50.0), 0))
                        y = int(round(((position[1]) / 50.0), 0))
                        Stone(screen,(x,y),white)

                        player = 2
                elif event.type == pygame.MOUSEBUTTONDOWN and player == 2:
                    position = pygame.mouse.get_pos()
                    if (event.button == 1) and(position[0] > 55 and position[0] < 710) and (position[1] > 100 and position[1] < 750):
                        x = int(round(((position[0]) / 50.0), 0))
                        y = int(round(((position[1] ) / 50.0), 0))
                        Stone(screen,(x,y),black)

                        player = 1




            clock.tick(60)
            self.button("Pass!",750,200,100,100,grey,other_grey,Player.pass_turn)
            self.button("Quit!",950,200,100,100,red,dark_red,Player.quitGame)
            self.button(score("Player 1: ", score1),750,400,300,110,white,white)
            self.button(score("Player 2: ",score2),750,600,300,110,white, white)
            pygame.display.update()


        pygame.quit()

def main():
    player = Player()
    board = Board()
    board.game_intro()  

if __name__ == "__main__":
    pygame.init()
    screen = pygame.display.set_mode(size, 0, 32) 
    pygame.display.set_caption("Go_Online")
    background = pygame.image.load(background).convert()
    main()

Here is the main game file

Can you show how you run it that works perfectly? Also the contents of going might help. — Phillip Martin
– Phillip Martin, Commented Nov 22, 2017 at 22:54
Could I send it to you privately its a college assignment I dont want to publish it — user7302428
– user7302428, Commented Nov 22, 2017 at 22:55

Phillip Martin · Accepted Answer · 2017-11-22 23:22:40Z

2

It seems that the two ways you try to call your game are slightly different.

The successful way, which seems to be something like $ python going.py

runs this code

if __name__ == "__main__":
    pygame.init()
    screen = pygame.display.set_mode(size, 0, 32) 
    pygame.display.set_caption("Go_Online")
    background = pygame.image.load(background).convert()
    main()

The flask route, when triggered runs this

return going.main()

You're missing some setup. My guess is that the bottom of your going.py should look like this.

def main():
    pygame.init()
    screen = pygame.display.set_mode(size, 0, 32) 
    pygame.display.set_caption("Go_Online")
    background = pygame.image.load(background).convert()
    player = Player()
    board = Board()
    board.game_intro()  


if __name__ == '__main__':
    main()

edited Nov 22, 2017 at 23:22

answered Nov 22, 2017 at 23:18

Phillip Martin

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5 Comments

user7302428 Over a year ago

unfortunately i get the same error. pygame.error: video system not initialized

Phillip Martin Over a year ago

I messed up the order but fixed it. Also, follow your stack trace whenever you get an error. There is a lot of helpful information there.

user7302428 Over a year ago

Thank you, the window launches now, only one small problem "UnboundLocalError: local variable 'background' referenced before assignment" I tried changing the ordering about but that doesnt work

user7302428 Over a year ago

When I change the name of the background variable, it turns to this error: NameError: name 'screen' is not defined

furas Over a year ago

Now screen is local variable created inside main() and not available in other functions. You will have to use global screen in main() to make it again available in other functions. The same problem can be with other variables created in main().

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