Размещение объектов в пределах формы и отражение двух объектов при соприкосновении

Shape2.Top = Shape2.Top - 50
End If
If KeyCode = 37 And Shape2.Left >= 0 Then
Shape2.Left = Shape2.Left - 50
End If
If KeyCode = 39 And Shape2.Left + Shape2.Width + 900 <= Form1.Width Then
Shape2.Left = Shape2.Left + 50
End If
If KeyCode = 40 And Shape2.Top + Shape2.Height + 550 <= Form1.Height Then
Shape2.Top = Shape2.Top + 50
End If
If Shape2.Width > Form1.Width - 1550 Or Shape2.Height > Form1.Height - 1400 Then
Else
If KeyCode = 187 Then
Shape2.Width = Shape2.Width + 50
Shape2.Height = Shape2.Height + 50
End If
End If
If KeyCode = 189 Then
If Shape2.Width < 500 And Shape2.Height < 500 Then
Else
Shape2.Width = Shape2.Width - 20
Shape2.Height = Shape2.Height - 20
End If
End If
If KeyCode = 32 Then 
If Timer1.Enabled = True Then 'óñëîâèå åñëè òàéìåð âêëþ÷åí
Timer1.Enabled = False ' âûêëþ÷åíèå òàéìåðà
Else
Timer1.Enabled = True 'âêëþ÷åíèå òàéìåðà
End If
End If
End Sub
Private Sub Form_Load()
xdelta = 20: ydelta = 20 'ðàññòîÿíèå ñìåùåíèÿ îáúåêòà
X = Shape1.Top: Y = Shape1.Left 'íà÷àëüíîå ïîëîæåíèå
End Sub
Private Sub Timer1_Timer()
X = X + xdelta: Y = Y + ydelta 'ñìåùåíèå êðóãà ïî êîîðäèíàòàì
If (X < 20 Or X > Form1.ScaleWidth - 360 Or X <= Shape2.Width + Shape2.Left) Then      'èçìåíåíèå íàïðàâëåíèÿ äâèæåíèÿ ïî ãîðèçîíòàëè
xdelta = -xdelta 'óñëîâèÿ èçìåíåíèÿ íàïðàâëåíèÿ ïî ãîðèçîíòàëè
Beep
End If
If (Y < 20 Or Y > Form1.ScaleHeight - 360 Or Y <= Shape2.Height + Shape2.Top) Then    'èçìåíåíèå íàïðàâëåíèÿ äâèæåíèÿ ïî âåðòèêàëè
ydelta = -ydelta 'óñëîâèÿ èçìåíåíèÿ íàïðàâëåíèÿ ïî ãîðèçîíòàëè
Beep
End If
Shape1.Move X, Y 'ñìåùåíèå êðóãà
End Sub