Cannot implicitly convert type 'int' to 'bool'

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C#

Hi I get this error:
Cannot implicitly convert type 'int' to 'bool' (Look at "if(hotKey & 0x8000) != 0)"

And some small errors with the brackets.
I don't know how to fix it...

Here is the code snippet:

private void processtimer_Tick(object sender, EventArgs e)
{
    if (GameFound)
    {
        int playerBase = Mem.ReadMultiLevelPointer(MainPlayer.baseAddress, 4, MainPlayer.multiLevel);

        xPosLabel.Text = "xPos: " + Mem.ReadFloat(playerBase + MainPlayer.offsets.xpos);
        yPosLabel.Text = "yPos: " + Mem.ReadFloat(playerBase + MainPlayer.offsets.ypos);
        zPosLabel.Text = "zPos: " + Mem.ReadFloat(playerBase + MainPlayer.offsets.zpos);

        int hotKey = ProcessMemoryReaderApi.GetKeyState(02); //Right Mouse
        if(hotKey & 0x8000) != 0)
        {
            FocusingOnEnemy = true;
            Aimbot();
        }
        else
        {
            FocusingOnEnemy = false;
            FocusTarget = -1;
        }
    }

    try
    {
        if (MyProcess != null)
        {
            if(MyProcess[0].HasExited)
                GameFound = false;
        }


    }

    catch(Exception ex)
    {
        MessageBox.Show("There was an error. " + ex.Message);
    }
}