save project

my_Tetris.py

@@ -39,7 +39,6 @@ L = [[(-1, 0), (0, 0), (1, 0), (1, 1)],
      [(0, -1), (0, 0), (0, 1), (-1, 1)]]
 shape_list = [I, J, L, O, S, T, Z]  # 7种类型俄罗斯方块
 
-
 # 一些RGB颜色
 cube_colors = [
     (204, 153, 153), (102, 102, 153),(153, 0, 102), 
@@ -48,23 +47,37 @@ cube_colors = [
 
 center = [2, 8]     # 第2行第8列
 shape = random.choice(shape_list)
-index = random.randint(0,len(shape)-1)
+index = random.randint(0, len(shape)-1)     # 随机形状索引
 current_shape = shape[index]
 color = random.choice(cube_colors)
+
+def check(center):
+    for cube in current_shape:
+        cube = (cube[0] + center[0], cube[1] + center[1])
+        # 当前的小方块超出网格的行、列，就返回False
+        if cube[0] < 1 or cube[1] < 1 or cube[0] > grid_num_height \
+                or cube[1] >grid_num_width:
+            return False
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             exit()
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT:     # 向右
-                if center[1] < 15:
-                    center[1] += 1
-            elif event.key == locals.K_LEFT:    # 向左
-                if center[1] > 1:
-                    center[1] -= 1
+            if event.key == locals.K_LEFT:    # 向左
+                center[1] = center[1] - 1       # 左移1列
+                if check(center) == False:
+                    center[1] = center[1] + 1   # 右移1列
+
+            elif event.key == locals.K_RIGHT:     # 向右
+                center[1] = center[1] + 1
+                if check(center) == False:
+                    center[1] = center[1] - 1
+                    
             elif event.key == locals.K_DOWN:    # 向下
-                if center[0] < 25:
-                    center[0] += 1
+                center[0] = center[0] + 1
+                if check(center) == False:
+                    center[0] = center[0] - 1
 
     # 将背景图画上去
     screen.blit(background, (0, 0))