[WIP] GuiltySpark

[Con]

Good news, I found the solution. Limited suggested I use SendInput instead.
you'll need these

        #region constants
        const int INPUT_MOUSE = 0;
        const int INPUT_KEYBOARD = 1;
        const int INPUT_HARDWARE = 2;
        const uint KEYEVENTF_EXTENDEDKEY = 0x0001;
        const uint KEYEVENTF_KEYUP = 0x0002;
        const uint KEYEVENTF_UNICODE = 0x0004;
        const uint KEYEVENTF_SCANCODE = 0x0008;
        const uint XBUTTON1 = 0x0001;
        const uint XBUTTON2 = 0x0002;
        const uint MOUSEEVENTF_MOVE = 0x0001;
        const uint MOUSEEVENTF_LEFTDOWN = 0x0002;
        const uint MOUSEEVENTF_LEFTUP = 0x0004;
        const uint MOUSEEVENTF_RIGHTDOWN = 0x0008;
        const uint MOUSEEVENTF_RIGHTUP = 0x0010;
        const uint MOUSEEVENTF_MIDDLEDOWN = 0x0020;
        const uint MOUSEEVENTF_MIDDLEUP = 0x0040;
        const uint MOUSEEVENTF_XDOWN = 0x0080;
        const uint MOUSEEVENTF_XUP = 0x0100;
        const uint MOUSEEVENTF_WHEEL = 0x0800;
        const uint MOUSEEVENTF_VIRTUALDESK = 0x4000;
        const uint MOUSEEVENTF_ABSOLUTE = 0x8000;
        #endregion

        #region structures
        struct MOUSEINPUT
        {
            public int dx;
            public int dy;
            public uint mouseData;
            public uint dwFlags;
            public uint time;
            public IntPtr dwExtraInfo;
        }

        struct KEYBDINPUT
        {
            public ushort wVk;
            public ushort wScan;
            public uint dwFlags;
            public uint time;
            public IntPtr dwExtraInfo;
        }

        struct HARDWAREINPUT
        {
            public int uMsg;
            public short wParamL;
            public short wParamH;
        }

        [StructLayout(LayoutKind.Explicit)]
        struct MOUSEKEYBDHARDWAREINPUT
        {
            [FieldOffset(0)]
            public MOUSEINPUT mi;

            [FieldOffset(0)]
            public KEYBDINPUT ki;

            [FieldOffset(0)]
            public HARDWAREINPUT hi;
        }

        struct INPUT
        {
            public int type;
            public MOUSEKEYBDHARDWAREINPUT mkhi;
        }
        #endregion

        [DllImport("user32.dll", SetLastError = true)]
        static extern uint SendInput(uint nInputs, ref INPUT pInputs, int cbSize);

                    INPUT structInput = new INPUT();
                    structInput.mkhi.ki.wScan = (ushort)0x11;
                    structInput.mkhi.ki.time = 0;
                    structInput.mkhi.ki.dwFlags = KEYEVENTF_SCANCODE;
                    structInput.mkhi.ki.wVk = 0;
                    structInput.type = INPUT_KEYBOARD;
                    SendInput(1, ref structInput, Marshal.SizeOf(new INPUT()));

Here's a list of key codes.


EDIT: success!
HaloBot has just walked from one side of bloodgulch to the other following the paths perfectly. You can even look around while it does this; it calculates the right combination of WASD to use based on the angle you're looking and where the goal is.