readPort(u2,DatagramReceived,locb,atb,hfig)

function readPort(u2,DatagramReceived,locb,atb,hfig)
%  	Author: Isaac Noh
%   Copyright 2008-2009 The MathWorks, Inc.
%   Version: 1.1

persistent numhits;

if isempty(numhits)
    numhits = 0;
end

data = fscanf(u2);

% Display ship locations at end of game
if length(data(1:end-1)) > 8
    loc = cellstr(reshape(data(1:end-1),17,[]));
    for i = 1:17
        row = (11 - (double(loc{i}(1)) - 64))/10;
        col = str2num(loc{i}(2:end))/10;

        ax = atb.axhandle;

        H = zeros(2,2,3);
        H(:,:,2) = 0.6;
        surface(zeros(2),H,...
            'XData',[(col - 0.1) col],...
            'YData',[(row - 0.1) row],...
            'Parent',ax);
        hUI = findobj(hfig,'UserData',loc{i});
        %set(hUI,'BackgroundColor',[0 0.6 0]);
    end
    return;
end

target = regexprep(data,'\s','');

switch target

    %%% BEGIN Ready or Not Ready %%%
    case 'ready1'

        switch get(locb.bhandle,'Enable')
            case 'on'
                fprintf(u2,'notready');

            case 'off'
                fprintf(u2,'ready2');
        end

    case 'ready2'

        switch get(locb.bhandle,'Enable')
            case 'on'
                set(atb.bhandle,'Enable','inactive');

            otherwise
                set(atb.bhandle,'Enable','on');
                msgbox('Player 2 is ready.');
        end

    case 'notready'
        set(atb.bhandle,'Enable','inactive');
        %%% END Ready or Not Ready %%%

        %%% BEGIN Speak %%%
    case 'sunkbs'
        speak('You sunk my battleship!')
        %%% END Speak

        %%% BEGIN Hit or Miss %%%
    case 'true'
        hM = findobj(hfig,'Label','Sound On');
        val = get(hM,'Checked');
        if strcmp(val,'on')
            load bshipSounds y_h Fs_h bits_h;
            sound(y_h,Fs_h,bits_h);
            hUI = findobj(hfig,'Style','radiobutton',...
                'Value',1);
            pause(3);
        else
            hUI = findobj(hfig,'Style','radiobutton',...
                'Value',1);
        end
        set(hUI,'BackgroundColor','r','Enable','off','Value',0);

        ud = get(hUI,'UserData');

        row = (11 - (double(ud(1)) - 64))/10;
        col = str2num(ud(2:end))/10;
        H = zeros(2,2,3);
        H(:,:,1) = 1;
        surface(zeros(2),H,...
            'XData',[(col - 0.1) col],...
            'YData',[(row - 0.1) row],...
            'Parent',atb.axhandle);

    case 'false'
        hM = findobj(hfig,'Label','Sound On');
        val = get(hM,'Checked');
        if strcmp(val,'on')
            load bshipSounds y_m Fs_m bits_m;
            sound(y_m,Fs_m,bits_m);
            hUI = findobj(hfig,'Style','radiobutton',...
                'Value',1);
            pause(3);
        else
            hUI = findobj(hfig,'Style','radiobutton',...
                'Value',1);
        end
        set(hUI,'BackgroundColor','w','Enable','off','Value',0);

        ud = get(hUI,'UserData');

        row = (11 - (double(ud(1)) - 64))/10;
        col = str2num(ud(2:end))/10;
        H = ones(2,2,3);
        surface(zeros(2),H,...
            'XData',[(col - 0.1) col],...
            'YData',[(row - 0.1) row],...
            'Parent',atb.axhandle);
        %%% END Hit or Miss %%%

        %%% BEGIN Game Over %%%
    case 'win'
        msgbox('You win! Game Over.');
        loc = char(locb.getlocation());
        fprintf(u2,loc);
        %%% END Game Over %%%

    otherwise
        loc = locb.getlocation();

        row = (11 - (double(target(1)) - 64));
        col = str2num(target(2:end));

        gp = locb.grid(row,col);

        if any(strcmp(loc,target))
            gp.sethit(true);
            numhits = numhits + 1;
            fprintf(u2,'true');
            if numhits == 17
                gameOver(u2);
            elseif numhits > 17
                errordlg('Too many hits');
            end
        else
            gp.sethit(false);
            fprintf(u2,'false');
        end
        set(atb.bhandle,'Enable','on');
end