#!python
# -*- coding: utf-8 -*-
u"""
Display split image with Pygame.

Windows10 x64 21H1 + Python 3.9.5 64bit + pygame 2.0.1
"""

import pygame
import sys

SCRW, SCRH = 320, 240

pygame.init()
screen = pygame.display.set_mode((SCRW, SCRH), pygame.DOUBLEBUF)

imgname = "spritesheet_number.png"
img = pygame.image.load(imgname).convert_alpha()

# make split area list
rects = []
w, h = 96, 96
for y in range(8):
    for x in range(8):
        rects.append(pygame.Rect(x * w, y * h, w, h))

index = 0
running = True

clock = pygame.time.Clock()

# Main loop
while running:

    # check event
    for ev in pygame.event.get():
        if ev.type == pygame.QUIT:
            running = False
        if ev.type == pygame.KEYDOWN:
            if ev.key == pygame.K_ESCAPE or ev.key == pygame.K_q:
                # Push ESC or Q key
                running = False
                
    screen.fill((40, 60, 200))   # clear screen

    # draw image
    x = 160 - 96 / 2
    y = 120 - 96 / 2
    screen.blit(img, (x, y), area=rects[index])

    index = (index + 1) % len(rects)

    pygame.display.flip()
    clock.tick_busy_loop(60)
    
    cap = "Image Split - %5.2f FPS" % (clock.get_fps())
    pygame.display.set_caption(cap)

pygame.quit()
sys.exit()