save project

snake.py

@@ -6,29 +6,47 @@ pygame.init()
 # 创建一个窗口
 screen = pygame.display.set_mode((660,480))
 bg = pygame.image.load("bg.png")
-right = pygame.image.load("right.png")
+# right = pygame.image.load("right.png")
 food = pygame.image.load("apple.png")
 body = pygame.image.load("body.png")
 FPS = pygame.time.Clock()
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
+setheading = "right"
+heading = pygame.image.load(setheading + '.png')
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             exit()
-        elif event.type == locals.K_a:
-            a -= 30
-    x +=30
+        elif event.type == locals.KEYDOWN:
+            if event.key == locals.K_RIGHT and setheading != 'left':
+                setheading = 'right'
+                heading = pygame.image.load('right.png')
+            elif event.key == locals.K_LEFT and setheading != 'right':
+                setheading = 'left'
+                heading = pygame.image.load(setheading + '.png')
+            elif event.key == locals.K_UP and setheading != 'down':
+                setheading = 'up'
+                heading = pygame.image.load(setheading + '.png')
+            else:
+                setheading = 'down'
+                heading = pygame.image.load(setheading + '.png')
+    if setheading == 'right':
+        x += 30
+    elif setheading == 'left':
+        x -= 30
+    elif setheading == 'up':
+        y -= 30
+    else:
+        y += 30
+    
     position.append((x,y)) 
     position.pop(0) 
     screen.blit(bg,(0,0))
-    screen.blit(right,(x,y))
+    screen.blit(heading,position[-1])
     for i in range(len(position)-1):
         screen.blit(body,position[i])
-    # screen.blit(body,(210,120))
-    # screen.blit(body,(180,120))
-    # screen.blit(body,(180,90))
     screen.blit(food,(360,300))
     
     pygame.display.update()
-    FPS.tick(3)
\ No newline at end of file
+    FPS.tick(4)
\ No newline at end of file