Equation of a line messup

[notquitehere188]

I have this code
it is suppoed to find all the variables for Y = MX + B and use them to find if the aim line goes through the left side of the player but it does not work

For X = 1 To MaxBullets
    With Bullet(X)
        If .Visible = True Then
            L1 = .Left - .Xinertia
            L2 = .Left
            T1 = (.Top - .Yinertia)
            T2 = .Top
            M = (T2 - T1) / (L2 - L1)
            B = T1 - (M * L1)
        End If
    End With
    For Y = 1 To PlayerCount
        With player(Y)
            'if the line goes over the point then it is true
            'Uses Y = MX + B
            '    Y       MX       +B
            If .Top < (M * .Left) + B Then Cnr(1) = True
            If .Top < (M * (.Left + .Width)) + B Then Cnr(2) = True
            If (.Top + .Height) < (M * .Left) + B Then Cnr(3) = True
            If (.Top + .Height) < (M * (.Left + .Width)) + B Then Cnr(4) = True
        End With
        
        If Cnr(1) = False And Cnr(3) = True Then
            Bullet(X).Visible = False
        End If
    Next Y
Next X

HELP!!!

[wossname]

Hit detection for polygons.

http://support.microsoft.com/kb/q121960/