如果只是简单的贪吃蛇的话,把蛇的基本图形设置成圆(或正方形),蛇身由一串基本图形构成,每过一秒,检测前面是什么,如果是空的,那么把头画成普通身体的样子,再在前方(或侧面,如果转弯的话)再画一个头,并将其坐标记入数组,数组要足够大,再把尾巴画成背景色;如果前面是食物,尾巴就不删除.这里的难点是数组里的操作和坐标的表示:把头添在最后一个元素,把第一个元素提取(也就是尾巴).
创新互联 - 川西大数据中心，四川服务器租用，成都服务器租用，四川网通托管,绵阳服务器托管，德阳服务器托管，遂宁服务器托管，绵阳服务器托管，四川云主机，成都云主机，西南云主机，川西大数据中心，西南服务器托管，四川/成都大带宽，服务器机柜，四川老牌ＩＤＣ服务商
Private Sub Timer5_Timer()
If Shape1(0).Left = Shape2.Left + 50 And Shape1(0).Left = Shape2.Left - 50 And Shape1(0).Top = Shape2.Top + 50 And Shape1(0).Top = Shape2.Top - 50 Then
If Shape2.Visible = True Then
Label1.Caption = Label1.Caption + 5
Shape2.Visible = False
Randomize
x = Fix(10 * Rnd + 1)
y = Fix(10 * Rnd + 1)
Shape2.Left = x * 300
Shape2.Top = y * 300
Shape2.Visible = True
End If
End If
End Sub
整段代码中，这一段是判断“蛇”是否已经吃到“果实”，如果吃到“果实”就随机位置产生一个“果实”，但这段代码中没有增加蛇的长度的代码。在这一段中加进去就OK了。
例：
Private Sub Timer5_Timer()
If Shape1(0).Left = Shape2.Left + 50 And Shape1(0).Left = Shape2.Left - 50 And Shape1(0).Top = Shape2.Top + 50 And Shape1(0).Top = Shape2.Top - 50 Then
If Shape2.Visible = True Then ‘如果果实是有效的，
Label1.Caption = Label1.Caption + 5 ‘给玩家加分。
Shape2.Visible = False ’隐藏被吃掉的果实。
‘在这里加入代码增加蛇的长度
Randomize
x = Fix(10 * Rnd + 1)
y = Fix(10 * Rnd + 1)
Shape2.Left = x * 300
Shape2.Top = y * 300
Shape2.Visible = True
End If
End If
End Sub
需用VB实现，代码如下
'定义蛇的运动速度枚举值
Private Enum tpsSpeed
QUICKLY = 0
SLOWLY = 1
End Enum
'定义蛇的运动方向枚举值
Private Enum tpsDirection
D_UP = 38
D_DOWN = 40
D_LEFT = 37
D_RIGHT = 39
End Enum
'定义运动区域4个禁区的枚举值
Private Enum tpsForbiddenZone
FZ_TOP = 30
FZ_BOTTOM = 5330
FZ_LEFT = 30
FZ_RIGHT = 5730
End Enum
'定义蛇头及身体初始化数枚举值
Private Enum tpsSnake
SNAKEONE = 1
SNAKETWO = 2
SNAKETHREE = 3
SNAKEFOUR = 4
End Enum
'定义蛇宽度的常量
Private Const SNAKEWIDTH As Integer = 100
'该过程用于显示游戏信息
Private Sub Form_Load()
Me.Show
Me.lblTitle = "BS贪食蛇 — (版本 " App.Major "." App.Minor "." App.Revision ")"
Me.Caption = Me.lblTitle.Caption
frmSplash.Show 1
End Sub
'该过程用于使窗体恢复原始大小
Private Sub Form_Resize()
If Me.WindowState 1 Then
Me.Caption = ""
Me.Height = 6405 '窗体高度为 6405 缇
Me.Width = 8535 '窗体宽度为 8535 缇
Me.Left = (Screen.Width - Width) \ 2
Me.Top = (Screen.Height - Height) \ 2
End If
End Sub
'该过程用于重新开始开始游戏
Private Sub cmdGameStart_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Beep
msg = MsgBox("您确认要重新开始游戏吗？", 4 + 32, "BS贪食蛇")
If msg = 6 Then Call m_subGameInitialize
End Sub
'该过程用于暂停/运行游戏
Private Sub chkPause_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Me.chkPause.Caption = "暂停游戏(P)" Then
Me.tmrSnakeMove.Enabled = False
Me.tmrGameTime.Enabled = False
Me.picMoveArea.Enabled = False
Me.lblPauseLab.Visible = True
Me.chkPause.Caption = "继续游戏(R)"
Else
Me.tmrSnakeMove.Enabled = True
Me.tmrGameTime.Enabled = True
Me.picMoveArea.Enabled = True
Me.lblPauseLab.Visible = False
Me.chkPause.Caption = "暂停游戏(P)"
End If
End Sub
'该过程用于显示游戏规则
Private Sub cmdGameRules_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Beep
MsgBox " BS贪食蛇：一个规则最简单的趣味游戏，您将用键盘" Chr(13) _
"上的4个方向键来控制蛇的运动方向。在运动过程中蛇" Chr(13) _
"不能后退，蛇的头部也不能接触到运动区域的边线以外" Chr(13) _
"和蛇自己的身体，否则就游戏失败。在吃掉随机出现的" Chr(13) _
"果子后，蛇的身体会变长，越长难度越大。祝您好运！！", 0 + 64, "游戏规则"
End Sub
'该过程用于显示游戏开发信息
Private Sub cmdAbout_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Beep
MsgBox "BS贪食蛇" "(V-" App.Major "." App.Minor "版本)" Chr(13) Chr(13) _
"" Chr(13) Chr(13) _
"由PigheadPrince设计制作" Chr(13) _
"CopyRight(C)2002,BestSoft.TCG", 0, "关于本游戏"
End Sub
'该过程用于退出游戏
Private Sub cmdExit_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Beep
msg = MsgBox("您要退出本游戏吗？", 4 + 32, "BS贪食蛇")
Select Case msg
Case 6
End
Case 7
Me.chkWindowButton(2).Value = 0
Exit Sub
End Select
End Sub
'该过程用于拖动窗体_(点击图标)
Private Sub imgWindowTop_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
ReleaseCapture
SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MOVE, 0
End Sub
'该共用过程用于处理窗体控制按钮组的相关操作_(锁定、最小化、退出)
Private Sub chkWindowButton_MouseUp(Index As Integer, Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button 1 Then Exit Sub
Select Case Index
Case 0 '锁定窗体
If Me.chkWindowButton(0).Value = 1 Then
Me.imgWindowTop.BorderStyle = 0
Me.imgWindowTop.Enabled = False
Else
Me.imgWindowTop.BorderStyle = 1
Me.imgWindowTop.Enabled = True
End If
Case 1 '最小化
Me.WindowState = 1
Me.chkWindowButton(1).Value = 0
Me.Caption = "BS贪食蛇 — (V-" App.Major "." App.Minor "版本)"
Case 2 '退出
Beep
msg = MsgBox("您要退出本游戏吗？", 4 + 32, "BS贪食蛇")
Select Case msg
Case 6
End
Case 7
Me.chkWindowButton(2).Value = 0
Exit Sub
End Select
End Select
End Sub
'该过程用于设置蛇运动速度的快慢
Private Sub hsbGameSpeed_Change()
Me.tmrSnakeMove.Interval = Me.hsbGameSpeed.Value
End Sub
'该过程用于通过键盘的方向键改变蛇的运动方向
Private Sub picMoveArea_KeyDown(KeyCode As Integer, Shift As Integer)
Select Case g_intDirection
Case D_UP
If KeyCode = D_DOWN Then Exit Sub
Case D_DOWN
If KeyCode = D_UP Then Exit Sub
Case D_LEFT
If KeyCode = D_RIGHT Then Exit Sub
Case D_RIGHT
If KeyCode = D_LEFT Then Exit Sub
End Select
g_intDirection = KeyCode
End Sub
'该计时循环过程用于计算游戏耗费的秒数并显示
Private Sub tmrGameTime_Timer()
g_lngGameTime = g_lngGameTime + 1
Me.lblGameTime.Caption = g_lngGameTime "秒"
End Sub
'该计时循环过程用于控制蛇的行动轨迹
Private Sub tmrSnakeMove_Timer()
Dim lngSnakeX As Long, lngSnakeY As Long, lngSnakeColor As Long
Dim lngPointX As Long, lngPointY As Long, lngPointColor As Long
Randomize
Me.picMoveArea.SetFocus
Me.picMoveArea.Cls
'确认蛇头的运动方向并获取新的位置
Select Case g_intDirection
Case D_UP '向上运动
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_OldX
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_OldY
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_CurY - SNAKEWIDTH
Case D_DOWN '向下运动
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_OldX
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_OldY
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_CurY + SNAKEWIDTH
Case D_LEFT '向左运动
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_OldX
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_CurX - SNAKEWIDTH
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_OldY
Case D_RIGHT '向右运动
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_OldX
g_udtSnake(SNAKEONE).Snake_CurX = g_udtSnake(SNAKEONE).Snake_CurX + SNAKEWIDTH
g_udtSnake(SNAKEONE).Snake_CurY = g_udtSnake(SNAKEONE).Snake_OldY
End Select
'根据新的位置绘制蛇头
lngSnakeX = g_udtSnake(SNAKEONE).Snake_CurX
lngSnakeY = g_udtSnake(SNAKEONE).Snake_CurY
lngSnakeColor = g_udtSnake(SNAKEONE).Snake_Color
Me.picMoveArea.PSet (lngSnakeX, lngSnakeY), lngSnakeColor
'移动蛇身体其他部分的位置
For i = 2 To g_intSnakeLength
g_udtSnake(i).Snake_CurX = g_udtSnake(i - 1).Snake_OldX
g_udtSnake(i).Snake_CurY = g_udtSnake(i - 1).Snake_OldY
lngSnakeX = g_udtSnake(i).Snake_CurX
lngSnakeY = g_udtSnake(i).Snake_CurY
lngSnakeColor = g_udtSnake(i).Snake_Color
Me.picMoveArea.PSet (lngSnakeX, lngSnakeY), lngSnakeColor
Next i
'更新蛇旧的坐标位置
For j = 1 To g_intSnakeLength
g_udtSnake(j).Snake_OldX = g_udtSnake(j).Snake_CurX
g_udtSnake(j).Snake_OldY = g_udtSnake(j).Snake_CurY
Next j
'判断蛇在移动中是否到了禁区而导致游戏失败
If m_funMoveForbiddenZone(g_udtSnake(SNAKEONE).Snake_CurX, g_udtSnake(SNAKEONE).Snake_CurY) Then
Beep
MsgBox "您的蛇移动到了禁区，游戏失败！", 0 + 16, "BS贪食蛇"
Me.tmrSnakeMove.Enabled = False
Me.tmrGameTime.Enabled = False
Me.picMoveArea.Visible = False
Exit Sub
End If
'判断蛇在移动中是否碰到了自己的身体而导致游戏失败
If m_funTouchSnakeBody(g_udtSnake(SNAKEONE).Snake_CurX, g_udtSnake(SNAKEONE).Snake_CurY) Then
Beep
MsgBox "您的蛇在移动中碰到了自己的身体，游戏失败！", 0 + 16, "BS贪食蛇"
Me.tmrSnakeMove.Enabled = False
Me.tmrGameTime.Enabled = False
Me.picMoveArea.Visible = False
Exit Sub
End If
'判断蛇是否吃到了果子
If m_funEatPoint(g_udtSnake(SNAKEONE).Snake_CurX, g_udtSnake(SNAKEONE).Snake_CurY) Then
'累加玩家的得分并刷新得分显示
g_intPlayerScore = g_intPlayerScore + 1
Me.lblYourScore.Caption = g_intPlayerScore "分"
Call m_subAddSnake '加长蛇的身体
Call m_subGetPoint '获取下一个果子的位置和颜色
Else
'绘制果子
lngPointX = g_udtPoint.Point_X
lngPointY = g_udtPoint.Point_Y
lngPointColor = g_udtPoint.Point_Color
Me.picMoveArea.PSet (lngPointX, lngPointY), lngPointColor
End If
End Sub
'该私有子过程用于初始化游戏
Private Sub m_subGameInitialize()
Erase g_udtSnake '清空蛇的结构数组
g_intPlayerScore = 0 '清空玩家的得分
g_lngGameTime = 0 '清空游戏耗费的秒数
g_intDirection = D_DOWN '设定蛇的初始运动方向为下
g_intSnakeLength = 4 '设定蛇的初始长度
ReDim g_udtSnake(1 To g_intSnakeLength) '重新定义蛇的长度
'定义蛇头部的数据
With g_udtSnake(SNAKEONE)
.Snake_OldX = 530
.Snake_OldY = 530
.Snake_Color = vbBlack
End With
'定义蛇身第2节的数据
With g_udtSnake(SNAKETWO)
.Snake_OldX = 530
.Snake_OldY = 430
.Snake_Color = vbGreen
End With
'定义蛇身第3节的数据
With g_udtSnake(SNAKETHREE)
.Snake_OldX = 530
.Snake_OldY = 330
.Snake_Color = vbYellow
End With
'定义蛇身第4节的数据
With g_udtSnake(SNAKEFOUR)
.Snake_OldX = 530
.Snake_OldY = 230
.Snake_Color = vbRed
End With
Me.picMoveArea.Visible = True
Me.lblYourScore.Caption = g_intPlayerScore "分"
Me.lblGameTime.Caption = g_lngGameTime "秒"
Me.tmrSnakeMove.Interval = Me.hsbGameSpeed.Value
Me.tmrSnakeMove.Enabled = True
Me.tmrGameTime.Enabled = True
Call m_subGetPoint '获取第一个果子的位置和颜色
End Sub
1、向上前进的时候，对代码进行一个详解。
2、向上前进时，x坐标不动，y坐标-1，如果下一个有食物 下一个位置的坐标和食物的坐标相同。把食物转化成蛇的身体。
3、如果蛇吃到了食物，就开始加速，并且食物的得分+2。
4、如果没有吃到食物，蛇可以正常往前走，恢复原来的方块。
5、向下前进时，x坐标不动，y坐标+1。
6、如果有食物就把食物转化为身体。
7、如果没有吃到食物，蛇可以正常往前走，恢复原来的方块。
