Моделирование взлета ракеты - VB

Option Explicit
 
 
Dim mr, mt, rt, vp, im, xi, yi, ms, si, csp, cx, y0, sby, imt, fire As Integer ' я бы так не написал
Dim star(8, 2) As Byte
Dim cdir As String
Private Sub aboutp_Click()
Form1.Show vbModal
End Sub
Private Sub btRun_Click()
If tbMt = 0 Then MsgBox "Empty": Exit Sub
restart
imgRocket.Visible = True
imgFire.Visible = True
mr = Val(tbMr.Text)
mt = Val(tbMt.Text)
rt = Val(tbRt.Text)
im = Val(tbIm.Text)
vp = mt / rt
cx = 400
If vp > 400 Then
csp = vp / 400
Else
csp = 1
cx = vp
End If
ms = okrD(im * Log((mr + mt) / mr))
If ms > Picture1.Height Then
sby = 1
Else
sby = 0
End If
tms.Text = ms
tm1.Enabled = True
btRun.Caption = ""
btRun.Enabled = False
btStop.Caption = "СТОП"
btStop.Enabled = True
cdir = CurDir
imgFire.Visible = True
tbIm.Enabled = False
tbMr.Enabled = False
tbMt.Enabled = False
tbRt.Enabled = False
End Sub
Private Sub btStop_Click()
restart
End Sub
Sub restart()
xi = 0
yi = 0
imt = 0
 ' Picture2.Line (0, 0)-(Picture2.Width, Picture2.Height), vbBlack, BF
  Picture1.Line (0, 0)-(Picture1.Width, Picture1.Height), vbWhite, BF
lbS.Caption = "0"
lbS.Left = Picture1.Left - 100
lbS.Top = Picture1.Top + Picture1.Height + 5
lbT.Caption = "0"
' lbT.Left = lbS.Left
lbT.Top = lbS.Top
 
tm1.Enabled = False
btRun.Caption = "ЗАПУСК"
btRun.Enabled = True
tm2.Enabled = False
imgRocket.Top = 172
imgFire.Top = 258
imgFire.Visible = False
imgConst.Top = 260
imgConst.Height = 30
 st1.Top = 48
 st2.Top = 168
 st3.Top = 112
 st4.Top = 136
 st5.Top = 80
 st6.Top = 88
 st7.Top = 40
tbIm.Enabled = True
tbMr.Enabled = True
tbMt.Enabled = True
tbRt.Enabled = True
 
End Sub
Private Sub exitp_Click()
Unload Form1
End Sub
 
Private Sub Command2_Click()
 
End Sub
 
 
 
 
Private Sub Form_Load()
'frmRocket.Caption = CurDir
Picture1.DrawWidth = 2
End Sub
 
 
 
Private Sub Picture1_Paint()
Dim y As Integer
DrawStyle = vbSolid
 Line (Picture1.Left - 5, Picture1.Top + Picture1.Height)-(Picture1.Left - 5, Picture1.Top - 15)
Line (Picture1.Left - 5, Picture1.Top - 15)-(Picture1.Left - 10, Picture1.Top - 5)
Line (Picture1.Left - 5, Picture1.Top - 15)-(Picture1.Left, Picture1.Top - 5)
CurrentX = Picture1.Left - 40
CurrentY = Picture1.Top - 20
Print "u (м/с)"
Line (Picture1.Left - 5, Picture1.Top + Picture1.Height + 3)-(Picture1.Left + Picture1.Width + 15 + 20, Picture1.Top + Picture1.Height + 3)
Line (Picture1.Left + Picture1.Width + 5 + 20, Picture1.Top + Picture1.Height - 1)-(Picture1.Left + Picture1.Width + 15 + 20, Picture1.Top + Picture1.Height + 3)
Line (Picture1.Left + Picture1.Width + 5 + 20, Picture1.Top + Picture1.Height + 8)-(Picture1.Left + Picture1.Width + 15 + 20, Picture1.Top + Picture1.Height + 3)
CurrentX = Picture1.Left + Picture1.Width + 20
CurrentY = Picture1.Top + Picture1.Height + 5
Print "t (c)"
lbT.Left = Picture1.Left - 10
lbT.Top = Picture1.Top + Picture1.Height + 5
'CurrentY = lbT.Top
'CurrentX = lbT.Left
'Print "0"
End Sub
Private Sub setval_Click()
tbIm.Text = 4500
tbMr.Text = 4730
tbMt.Text = 28000
tbRt.Text = 5
End Sub
Private Sub start_Click()
btRun_Click
End Sub
Private Sub stop_Click()
btStop_Click
End Sub
 
Private Sub Tm1_Timer()
Dim yi As Integer
xi = xi + 1
If xi <= cx Then
si = im * Log((mr + mt) / (mr + mt - csp * rt * xi))
imt = mt - okrD(xi * csp * rt)
tbMt.Text = imt
lbT.Caption = xi * csp
lbT.Left = Picture1.Left - ((lbT.Width) / 2) + xi
If sby = 1 Then
yi = okrD(si * Picture1.Height / ms)
Else
yi = okrD(si / 1)
End If
lbS.Caption = CStr(okrD(si / 1))
lbS.Left = Picture1.Left - 5 - lbS.Width
lbS.Top = (Picture1.Top + Picture1.Height) - yi - lbS.Height / 2
 
Picture1.PSet (xi, Picture1.Height - yi), vbRed
If fire <> 2 Then
 imgFire.Picture = Picture3.Picture
fire = 2
Else
 imgFire.Picture = Picture4.Picture
fire = 1
End If
If si > 1 Then
tm2.Interval = 500 - si * 500 / ms
If tm2.Enabled = False Then
tm2.Enabled = True
End If
End If
End If
End Sub
Function setSec(mt, rt)
Dim res As Integer
res = mt / rt
End Function
Function okrD(dr As Double) As Long
Dim c As Long
c = Fix(dr)
If dr = c Then
okrD = c
ElseIf (dr - c) > 0.5 Then
okrD = c + 1
Else: okrD = c
End If
End Function
Private Sub tm2_Timer()
 st1.Top = st1.Top + 1
 st2.Top = st2.Top + 1
 st3.Top = st3.Top + 1
 st4.Top = st4.Top + 1
 st5.Top = st5.Top + 1
 st6.Top = st6.Top + 1
 st7.Top = st7.Top + 1
If imgConst.Top < 291 Then
imgConst.Top = imgConst.Top + 1
imgConst.Height = imgConst.Height - 1
End If
imgRocket.Top = imgRocket.Top - 1
imgFire.Top = imgFire.Top - 1
End Sub