剪刀石頭布
Player 玩家 Computer 電腦(隨機) Judge 裁判
分析
類別裡面要寫哪寫成員？
比較字串可以嗎？可以，但要把所有的組合都寫進去，總共有三種拳套，如果今天又多了3種拳法，有6種拳套，要寫非常多個判斷就要不斷加，就廢了，不太好。
- 三種拳法：剪刀石頭布
1
2
3
4
石頭1 剪刀2 布3
- 玩家贏了：1-2=-1 2-3=-1 3-1=2
- 平手：相減=0;
- 另一種情況：電腦贏了
- Player 玩家
- 出拳方法
- Computer 電腦(隨機)
- 出拳方法
- Judge 裁判
- 判斷結果(playerNumber,computerNumber) 相減
實作
Form1.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
private void btnRock_Click(object sender, EventArgs e)
{
string str = "石頭";
PlayGame(str);
}
private void PlayGame(string str)
{
lblPlayer.Text = str;
//玩家出拳
Player player = new Player();
int playerNum = player.ShowFist(str);
//電腦出拳
Computer computer = new Computer();
int computerNum = computer.ShowFist(); //隨機出拳，所以沒有參數
lblComputer.Text = computer.Fist;
//裁判
Result result = Judge.JudgeResult(playerNum, computerNum);
lblJudge.Text = result.ToString();
}
private void btnScissors_Click(object sender, EventArgs e)
{
string str = "剪刀";
PlayGame(str);
}
private void btnPaper_Click(object sender, EventArgs e)
{
string str = "布";
PlayGame(str);
}
Player.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/// <summary>
/// 玩家出拳
/// </summary>
/// <param name="fist">拳法：剪刀石頭布</param>
/// <returns>返回一個出拳的數字</returns>
public int ShowFist(string fist)
{
int num = 0;
switch (fist)
{
case "石頭":
num = 1;
break;
case "剪刀":
num = 2;
break;
case "布":
num = 3;
break;
}
return num;
}
Computer.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
internal class Computer
{
/// <summary>
/// 儲存電腦出的拳頭
/// </summary>
public string Fist { get; set; } //自動屬性
public int ShowFist()
{
Random r = new Random(); //建立產生隨機數物件
int num = r.Next(1, 4); //1-3
switch (num)
{
case 1:
this.Fist = "石頭";
break;
case 2:
this.Fist = "剪刀";
break;
case 3:
this.Fist = "布";
break;
}
return num;
}
}
Judge.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
public enum Result
{
玩家贏, 電腦贏, 平手
}
/// <summary>
/// 裁判
/// </summary>
internal class Judge
{
public static Result JudgeResult(int playerNumber, int computerNumber)
{
if (playerNumber - computerNumber == -1 || playerNumber - computerNumber == 2)
{
return Result.玩家贏;
} else if (playerNumber - computerNumber == 0)
{
return Result.平手;
} else
{
return Result.電腦贏;
}
}
}