/Users/craigcornelius/Projects/SPRING Mac Release 0.2/joystick.h

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// $Id: joystick.h,v 1.5 2006/05/24 16:52:41 sean Exp $
// $Copyright: (c)2001 National Biocomputation Center, Stanford University $

//
//  joystick.h
//
//  Author: Chris (caschwan@hawaii.edu) - Hawaii

#ifndef Joystick_Header
#define Joystick_Header

#ifdef _WIN32
#include <winsock.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>

#ifndef SOCKET
#define SOCKET unsigned int
#endif // SOCKET

#endif _WIN32

#include "sensor.h"
#include "socket.h"
#include "timer.h"
#include <iostream>      // For debugging messages


class Joystick : public Sensor {

public:

    Joystick(char* machine_name, int port_num = 9899);
    virtual ~Joystick();

    static const char* rcsid;
    static int debug;
    
    // the main update routine
    void Update();

        // joystick emulation mode (how the joystick buttons are mapped to position actions)
        enum emulation_mode {
                no_emulation,                // all values are activation values
                mouse_emulation,             // xyz mouse movements (primitive - first three axes used)
                enhanced_3d_emulation,       // movements similar to first-person shoot but with tilting
                first_person_emulation,      // movements like in a first-person shooter 
                pedal_emulation,             // emulation for foot pedals (CH Products Foot Pedal)
                button_pedal_emulation,      // emulation for foot pedals (XKeys 3-button Foot Pedal)
        };  
        // The joystick emulation mode (how the joystick buttons are mapped to position actions)
        emulation_mode joystickEmulation;

        // returns the joystick emulation mode
        emulation_mode getJoystickEmulation() { return joystickEmulation; }
        // sets the joystick emulation mode
        void setJoystickEmulation(emulation_mode emulationMode) { joystickEmulation = emulationMode; }

        // maximum number of joystick buttons
        enum { MAX_JOYSTICK_BUTTONS = 100 };
        // maximum number of joystick axes
        enum { MAX_JOYSTICK_AXES = 50 };

        // returns the number of joystick axes
        int getNumAxes() { return joydata->num_axes; }
        // returns the number of joystick buttons
        int getNumButtons() { return joydata->num_buttons; }

        // returns the button status of button with given obj_id: 
        // -index starts at 0 until (max_buttons - 1)
        // -button values are either 0 (not pressed) or 1 (pressed)
        int getButton(int index) { return joydata->buttons[index]; }
        // returns the axis status of axis with given obj_id:
        // -index starts at 0 until (max_axes - 1)
        // -axis values go from [-1..1] -> 0 representing the center
        float getAxis(int index) { return joydata->axes[index]; }

private:

    // internal data
    char *buf;
    Socket *hsock;
        
        // last time when update done
        double lastUpdate;
        // Timer instance
        Timer timer;

        // How joystick state is internally stored
        struct Joydata_s {
                int num_buttons;
                int buttons[MAX_JOYSTICK_BUTTONS];
                int num_axes;
                double axes[MAX_JOYSTICK_AXES];
        };
        typedef struct Joydata_s Joydata;
        // The joystick used
        Joydata* joydata;

        // internal helpers
        void receive_info();
        void send_force();
    
};

#endif

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