Moving a Tkinter widget to a specific coordinates and changing the text of a text widget

Question

I'm trying to make a game like snake, where when you catch/eat the apple and the apple moves to a different spot in tkinter.

But I want to place the "apple", or in this case, a blue triangle, to a random place on the canvas,but the only command I can find is canvas.move(), which moves the widget a certain number of pixels in any direction. This can't fulfill what I need(I think, maybe there is a way around it?). Is there a way to place the blue triangle randomly on the canvas?

from Tkinter import *
import random
import time


class Ball:
    def __init__(self, canvas,square):
        self.square = square
        self.canvas = canvas
        self.id = canvas.create_oval(10,10,25,25,fill='red')
        self.canvas.move(self.id,245,100)
        self.text = self.canvas.create_text(10, 10, text='GAME OVER', font=('Courier', 80))
        self.canvas.move(self.text, -7000, -7000)
        starts = [-3,-2,-1,1,2,3]
        self.x = random.choice(starts)
        self.y = -30
    def draw(self):
        self.canvas.move(self.id,self.x,self.y)
        pos = self.canvas.coords(self.id)
        if pos[1] <= 0:
            self.y = 4
        if pos[3] >= self.canvas.winfo_height():
            self.y = -4
        if self.hit_square(pos) == True:
            self.canvas.move(self.text,245,100)
            time.sleep(2)
            tk.destroy()
        if pos[0] <= 0:
            self.x = 4
        if pos[2] >= self.canvas.winfo_width():
            self.x = -4
    def hit_square(self, pos):
        square_pos = self.canvas.coords(self.square.id)
        if pos[2] >= square_pos[0] and pos[0] <= square_pos[2]:
            if pos[3] >= square_pos[1] and pos[3] <= square_pos[3]:
                return True
        return False
    def stay(self):
        self.x = 0
        self.y = 0
class Square:
    def __init__(self,canvas):
        self.canvas = canvas
        self.id = canvas.create_rectangle(15, 15, 30, 30,fill='green')
        self.x = 0
        self.y = 0
        self.canvas.move(self.id, 200, 250)
        self.canvas.bind_all('<KeyPress-Left>',self.left)
        self.canvas.bind_all('<KeyPress-Right>', self.right)
        self.canvas.bind_all('<KeyPress-Up>', self.up)
        self.canvas.bind_all('<KeyPress-Down>', self.down)
    def draw(self):
        self.canvas.move(self.id,self.x,self.y)
        pos = self.canvas.coords(self.id)
        if pos[0] <= 0:
            self.x = 0
        elif pos[2] >= self.canvas.winfo_width():
            self.x = 0
        if pos[1] <= 0:
            self.y = 0
        elif pos[3] >= self.canvas.winfo_height():
            self.y = 0
    def left(self, evt):
        self.x = -2
        self.y = 0
    def right(self, evt):
        self.x = 2
        self.y = 0
    def up(self, evt):
        self.y = -2
        self.x = 0
    def down(self, evt):
        self.y = 2
        self.x = 0
class Triangle:
    def __init__(self,canvas,square):
        self.canvas = canvas
        self.square = square
        self.id = self.canvas.create_polygon(26.5,10,20,25,35,25,fill='blue')
        self.canvas.move(self.id,random.randint(10,450),random.randint(10,380))
        self.score = 0
    def draw_score(self):
        self.score_show = self.canvas.create_text(450, 20, text='score:' + str(self.score), font=('Arial', 20))
    def hit_square(self):
        pos = self.canvas.coords(self.id)
        square_pos = self.canvas.coords(self.square.id)
        if pos[2] >= square_pos[0] and pos[0] <= square_pos[2]:
            if pos[3] >= square_pos[1] and pos[3] <= square_pos[3]:
                self.teleport(pos)
    def teleport(self, pos):
        x = self.canvas.winfo_width()-pos[0]-10
        y = self.canvas.winfo_height() - pos[1]-10
        self.score += 1
        self.canvas.move(self.id,)
tk = Tk()
tk.title("Run from the ball!")
tk.resizable(0,0)
tk.wm_attributes('-topmost',1)
canvas = Canvas(tk, width=500,height=400,bd=0,highlightthickness=0)
canvas.pack()
tk.update()

square = Square(canvas)
ball = Ball(canvas, square)
ball1 = Ball(canvas, square)
ball2 = Ball(canvas, square)
ball3 = Ball(canvas, square)
ball4 = Ball(canvas, square)
triangle = Triangle(canvas, square)
x = 0
while x < float('inf'):
    ball.draw()
    triangle.draw_score()
    triangle.hit_square()
    if x >= 10:
        ball1.draw()
    if x >= 20:
        ball2.draw()
    if x >= 30:
        ball3.draw()
    if x >= 40:
        ball4.draw()
    square.draw()
    tk.update_idletasks()
    tk.update()
    time.sleep(0.01)
    x += 0.01

Yes, I know that the score function is messed up, and that the one overlaps the zero. Could you guys help me with that too?

Answer 1

Is there a way to place the blue triangle randomly on the canvas?

Yes. the coords method can get you the current coordinates, but it also lets you change the coordinates to whatever you want.

self.canvas.coords(self.id, 36.5, 20, 30, 35, 45, 35)