refactor code structure

module/__init__.py

@@ -0,0 +1,18 @@
+WIDTH, HEIGHT = 800, 600
+
+# 颜色定义
+COLORS = {
+    "air": (0, 191, 255),
+    "grass": (34, 139, 34),
+    "dirt": (139, 69, 19),
+    "stone": (128, 128, 128),
+    "sand": (238, 232, 170),
+    "water": (0, 0, 255),
+    "player": (255, 0, 0)
+}
+
+# 游戏参数
+BLOCK_SIZE = 20
+GRAVITY = 0.5
+PLAYER_SPEED = 5
+JUMP_FORCE = -12