m

Author: ityard

yeke/README.md

@@ -10,6 +10,7 @@
 + [py-tetris](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-tetris) ：用 Python 写个俄罗斯方块
 + [py-counter](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-counter) ：不到 100 行 Python 代码写个计算器
 + [py-tank](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-tank) ：用 Python 写个坦克大战
++ [py-scratch](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-scratch) ：不到 50 行 Python 代码，做个刮刮卡
 
 ---
 

yeke/py-scratch/__init__.py

@@ -0,0 +1,37 @@
+import os
+import sys
+import random
+import pygame
+
+path = 'prize'
+ptype = ['jpg', 'png', 'bmp', 'JPG', 'PNG', 'BMP']
+# 窗口大小
+screen_size = (600, 400)
+white = (255, 255, 255, 20)
+gray = (192, 192, 192)
+pygame.init()
+pygame.mouse.set_cursor(*pygame.cursors.diamond)
+screen = pygame.display.set_mode(screen_size)
+pygame.display.set_caption('刮一刮抽奖')
+surface = pygame.Surface(screen_size).convert_alpha()
+surface.fill(gray)
+filenames = os.listdir(path)
+filenames = [f for f in filenames if f.split('.')[-1] in ptype]
+imgpath = os.path.join(path, random.choice(filenames))
+image_used = pygame.transform.scale(pygame.image.load(imgpath), screen_size)
+while True:
+	for event in pygame.event.get():
+		if event.type == pygame.QUIT:
+			pygame.quit()
+			sys.exit(-1)
+	mouse_event = pygame.mouse.get_pressed()
+	if mouse_event[0]:
+		pygame.draw.circle(surface, white, pygame.mouse.get_pos(), 40)
+	elif mouse_event[-1]:
+		surface.fill(gray)
+		image_used = pygame.transform.scale(pygame.image.load(imgpath), screen_size)
+	screen.blit(image_used, (0, 0))
+	screen.blit(surface, (0, 0))
+	pygame.display.update()
+
+