diff --git a/Image/MenuBg.jpg b/Image/MenuBg.jpg
new file mode 100644
index 0000000..78e8542
Binary files /dev/null and b/Image/MenuBg.jpg differ
diff --git a/SafariChess_Classes.py b/SafariChess_Classes.py
new file mode 100644
index 0000000..f6e305d
--- /dev/null
+++ b/SafariChess_Classes.py
@@ -0,0 +1,22 @@
+"""
+    SafariChess_Classes.py
+    Classes for button and keyboard events
+"""
+
+class Button:
+    def _init_(self, image, position, callback=None):
+        self.image = image
+        self.rect = image.get_rect(topleft=position)
+        self.callback = callback
+    
+    def on_click(self, mouse_pos):
+        if self.rect.collidepoint(mouse_pos):
+            if self.callback:
+                self.callback()
+            return True
+        return False
+    
+    
+#class DropDown():
+#下拉选择框
+    
diff --git a/SarafiChess_Gamev1.0.py b/SarafiChess_Gamev1.0.py
index a252234..e5b22f7 100644
--- a/SarafiChess_Gamev1.0.py
+++ b/SarafiChess_Gamev1.0.py
@@ -14,12 +14,17 @@ from json import load
 import pygame as pg
 import sys
 from time import process_time
+import SafariChess_backend as backend
+import SafariChess_Classes as classes
+
 
 #设置棋盘的参数
 WIDTH = 800
 HEIGHT = 1000
 BOARD_WIDTH = 600
 BOARD_HEIGHT = 800
+SCREEN_WIDTH = 600
+SCREEN_HEIGHT = 800
 MOVE_LOG_PANEL_WIDTH = 0
 MOVE_LOG_PANEL_HEIGHT = BOARD_HEIGHT
 DIMENSION = 8
@@ -27,6 +32,8 @@ DIMENSION_ROWS = 7
 DIMENSION_COLUMNS = 9
 SIZE = 64
 IMAGES = {}
+bias_top = 200 #棋盘的上边距
+bias_left = 10 #棋盘的左边距
 
 def loadImages():#加载图片,a,b双方分别有象狮豹狼狐鹰鼠七个角色
     pieces = ["r7_Eleph", "r6_Lion", "r5_Leo", "r4_Wolf", "r3_Fox", "r2_Eag", "r1_Mse",
@@ -42,9 +49,8 @@ def loadImages():#加载图片,a,b双方分别有象狮豹狼狐鹰鼠七个角
 #screen.fill(pg.Color("white"))
 
 def drawBoard(screen):#绘制棋盘:格子，河流，陷阱，巢穴
-    #global colors
-    bias_top = 200
-    bias_left = 10
+    
+    
     #colors = [(255, 255, 255), (0, 0, 0)]
     for row in range(DIMENSION_ROWS):
         for column in range(DIMENSION_COLUMNS):
@@ -73,18 +79,37 @@ def drawPieces(screen,board):
             piece = board[row][column]
             if piece != "--":
                 screen.blit(IMAGES[piece], pg.Rect((column * SIZE) + 10, (row * SIZE) + 200, SIZE, SIZE))
-        
+
+# square_selected 是当前选中的可以移动的棋子的位置
+def protrudeSquares(screen,game_state,square_selected,valid_moves):
+    #高亮选中的棋子接下来可行的位置
+    if square_selected != ():
+        row = square_selected[0]
+        column = square_selected[1]
+        if game_state.board[row][column][0] == ('r' if game_state.red_to_move else 'b'):  
+            # highlight selected square
+            s = pg.Surface((SIZE, SIZE))
+            s.set_alpha(100)  
+            s.fill(pg.Color('blue'))
+            screen.blit(s, (column *SIZE + bias_left, row * SIZE + bias_top))
+            # highlight moves from that square
+            s.fill(pg.Color('yellow'))
+            for move in valid_moves:
+                if move.start_row == row and move.start_col == column:
+                    screen.blit(s, (move.end_col * SIZE + bias_left, move.end_row * SIZE + bias_top))
+    
     
+    
+def ShowGameState(screen,game_state,valid_moves,square_selected):#游戏状态
+    drawBoard(screen)
+    protrudeSquares(screen,game_state,square_selected,valid_moves)
+    drawPieces(screen,game_state.board)
             
             
-def drawValidMoves(screen):#绘制可走的位置
-    pass
-
+#待开发
 def drawMovelog(screen):#绘制移动日志
     pass
 
-def InitScreen(screen):
-    pass
 
 def startGamePage():#开始游戏界面，Human/AI
     startpage = '''
@@ -112,13 +137,51 @@ Please type one of the numbers below to choose a playing mode:
     '''
     print(startpage)
     # 选择游戏模式
-    #not_selected = True
-    #p1 , p2 = 0, 0
-    #while '''
+    not_selected = True
+    p1 , p2 = 0, 0
+    while not_selected:
+        try:
+            mode = int(input())
+            if mode in [1,2,3,4]:
+                if mode == 1:
+                    p1 = 1
+                    p2 = 1
+                ##其余版本还未写
+                not_selected = False
+            else:
+                print("Please type one of the numbers below to choose a playing mode:")
+                print("   ( 1 ) - Human vs Human")
+                print("   ( 2 ) - Human vs AI")
+                print("   ( 3 ) - AI vs AI")
+                print("   ( 4 ) - Quit")
+        except ValueError:
+            print("Wrong Input")
+    return p1, p2, mode
     
     
-def GameOver(screen):#游戏结束,出现的文字以及图像
-    pass
+def showGameOverText(screen, text):
+    #游戏结束,出现的文字 text是字符串“Left Win”或“Right Win”
+    font = pg.font.SysFont("comicsansms", 32)
+    text_object = font.render(text, True, pg.Color("red"))
+    text_location = pg.Rect(0, 0, BOARD_WIDTH, BOARD_HEIGHT).move(BOARD_WIDTH / 2 - text_object.get_width() / 2,
+                                                                 BOARD_HEIGHT / 2 - text_object.get_height() / 2)
+    screen.blit(text_object, text_location)
+    text_object = font.render(text, False, pg.Color('black'))
+    screen.blit(text_object, text_location.move(5, 5))
+
+def MainMenu():
+    #显示主菜单
+    
+    pg.init()
+    mainClock = pg.time.Clock()
+    screen = pg.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
+    pg.display.set_caption("SafariChess by ZY&&DQ")
+    bg = pg.image.load("images/MenuBg.jpg")
+    
+    #按钮设置
+    return 1
+    
+      
 
 def main():
     pg.init()
@@ -155,4 +218,6 @@ if __name__ == '__main__':
     print("Loading...")
     print("Initialing game...")
     main()
+    
+    
     
\ No newline at end of file