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This assignment tests your understanding on GUI, Java Socket Programming and the

COMP2396 Object-oriented programming and Java

Assignment 4: A two-player Tic-Tac-Toe Game

Due Date: 7th December 2023 23:59

application of multi-threading.

In this assignment, you are going to implement a two-player Tic-Tac-Toe Game. The

game would only start when the Tic-Tac-Toe Server runs and two players are connected

to the server. When the game starts, players need to input their player’s name first (i.e.,

the player cannot make any move if he/she does not enter his/her player’s name) (Fig.

1). Players are not allowed to re-input their names again once they have submitted their

names (i.e., the textboxes and the submit buttons should be disabled). In addition, their

names should be displayed in the frame’s title (i.e., change from Tic Tac Toe to Tic Tac

Toe-Player: (player’s name)) and the message title (located below the menu bar) should

change from “Enter your player name…” to “WELCOME (player’s name)” (Fig. 2).

Initial setting:

Fig. 1

After player enters his/her name:

Fig. 2

After entering the player’s name, the game would always be started by player 1 (the

player’s mark with a “x”)’s first move (i.e., player 2 (the player’s mark with a “o”)

cannot make his/her first move until player 1 makes his/her first move). If player 1’s

move is valid, his/her move would be marked as a “x” on the 3 x 3 board (The mark “x”

on the 3 x 3 board should be displayed on both player 1’s and player 2’s board). The

message title in the player 1’s board would be changed to “Valid move, wait for your

opponent.” while the message title in the player 2’s board would be changed to “Your

opponent has moved, now is your turn.”. Besides, player 1 is not allowed to make the

next move until his/her opponent moves (i.e., if player 1 makes the next move before

his/her opponent moves, it would be considered as an invalid move and nothing would

be displayed on the board). The turn would be switched to the opponent (this time player

2) and if player 2’s move is valid, it would be mark as a “o” on the 3 x 3 board on both

players. The message displayed in the message title of the player 2’s board would be

changed to “Valid move, wait for your opponent.” while the message title of the player

1’s board would be changed to “Your opponent has moved, now is your turn.” Similarly,

the turn would be switched to player 1 again and player 2 cannot make his/her next

move until player 1 makes the move (Fig. 3 & 4).

Fig. 3

Fig. 4

Criteria for a valid move:

- The move is not occupied by any mark.

- The move is made in the player’s turn.

- The move is made within the 3 x 3 board.

- Player 1 wins.

- Player 2 wins.

The game would continue and switch among the opposite player until it reaches either

one of the following conditions:

- Draw.

The winning condition is that when there is any row, column or diagonal that is filled

with the same mark (e.g., player 1 would win if there is any row, column or diagonal

that is filled with “x”, player 2 would win if there is any row, column or diagonal that

is filled with “o”). The game will draw if no players satisfy the winning condition after

all the board location is filled with mark. Once it reaches either one of the above

conditions, Message Dialog would be displayed on both players (the content of the

Message Dialog would be different, based on the condition reached, but all would

ask whether to restart the game.), both players cannot make further move, and

can select “Yes” to restart the game, or select “No” to exit the game. The

following screen captures show the Message Dialog displayed on the two players

when either one of the player wins (Fig. 5 & 6) or the game is draw (Fig. 7).

Fig. 5

Fig. 6

Fig. 7

In addition to the above, you also need to handle the case when one of the players left

during the game process. In this case, the game would terminate immediately (i.e., the

remaining player cannot make further move), a Message Dialog “Game Ends. One of

the players left.” would be displayed on the remaining player, as shown below in Fig.

8.

Fig. 8

Besides, as you can see in the screen captures, there is a JMenuBar which consists of 2

JMenu, named Control and Help (located above the message title). In the JMenu of

Control, it consists of a JMenuItem, named Exit while in the JMenu of Help, it consists

of a JMenuItem, named Instruction (Fig. 9 & 10). When the player clicks “Exit”, he/she

would exit from the game and the game would be terminated immediately. When the

player clicks “Instruction”, a Dialog Frame consists of some game information would

be displayed (Fig. 11).

Fig. 9 Fig. 10

Fig. 11

Important notes for the assignment:

1. In this assignment, you can assume both the server program and the client

programs run on local host (i.e., with IP address 127.0.0.1).

2. You can have your own design, but you must include the GUI components as

shown in the above screen captures and all the functionalities described in this

document should be implemented. To ensure your program has implemented all

necessary functions, please refer to the marking scheme below as for your

references.

3. This assignment will be marked by features (Your code would not be

investigated). You are required to write JavaDoc for all non-private classes and

non-private class member functions. Programs without JavaDoc will lead to

mark deduction. However, you don’t need to generate JavaDoc htmls. Just write

comment blocks in your source program.

4. You need to record a demo video of the program. The video should start before

 you run the program and include all the features your program.

5. After completing the assignment, please submit all files (including demo videos

 and java files) in a single compressed file (in .zip) to Moodle. Late submission

 is NOT allowed. Do NOT submit .class files.

6. You will get 0 mark if:

 You submit .class files instead of .java source files, or

 You submit java source files that are downloaded from the Internet, or

 You submit java source files from your classmates, or

 You submit java source files from friends taken this course last year.

Marking Scheme:

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