python 中的字符 Animation 不起作用

Question

I am busy making a game in python using tkinter, time and PIL, and I have a character that I want to animate very simply, but when I try this code, it doesn't do anything then jumps to the last image, can someone please tell me why this is?

def move_char(event):
if event.keysym == "w":
    character = ch1
    c.delete(character)
    character = ch2_1
    c.create_image(725, 450, image = character)
    sleep(0.2)
    c.delete(character)
    character = ch2
    c.create_image(725, 450, image = character)
    sleep(0.2)
    c.delete(character)
    character = ch2_2
    c.create_image(725, 450, image = character)
    sleep(0.2)
    c.delete(character)
    character = ch2
    c.create_image(725, 450, image = character)

Appreciate any help

Answer 1

Since character is a reference to PhotoImage , c.delete(character) will not delete the image in the canvas as you wish. You can use tag option of c.create_image(...) to identify the image and use the tag in c.delete() . Also in order to see the animation effect, you need to call c.update() after c.create_image(...) .

Below is an updated move_char(...) :

def move_char(event):
    if event.keysym == "w":
        # loop through the images
        for ch in (ch2_1, ch2, ch2_2, ch2):
            c.delete('char-image') # remove current image
            c.create_image(725, 450, image=ch, tag='char-image') # use tag to identify image
            c.update() # make the change effective
            sleep(0.2)