File content as of revision 1:862da825ba95:

#include "mbed.h"
#include "N5110.h" // to enable access and use of the N5110 classes.

#define DIRECTION_TOLERANCE 0.25 // changing to this value enables altering tolerance of joystick direction
#ifndef GAME_H
#define GAME_H 

Ticker pollJoystick;// regular reading of the joystick position.
Serial serial(USBTX,USBRX);// Serial for debug

//create enumerated type (0,1,2,3 etc. for direction)
//could be extended for diagonals etc.

enum DirectionName {
    UP,
    DOWN,
    LEFT,
    RIGHT,
    CENTRE,
    UNKNOWN
};

typedef struct JoyStick Joystick;// for Joystick structure

struct JoyStick {
    float x;    // current x value
    float x0;   // 'centred' x value
    float y;    // current y value
    float y0;   // 'centred' y value
    int buttonjoystick; /// button state (assume pull-down used, so 1 = pressed, 0 = unpressed)
    DirectionName direction;  /// current direction
};

Joystick joystick;// creating struct variables

volatile int g_button_flag = 0;// setting the "g_button_flag" original value to Zero.


// initialising joystick position.
void calibrateJoystick();

// reading the current value of joystick .
void updateJoystick();

void button_isr();

int status = 1;// setting the status at the origin.
int printFlag = 0;// this sets Flags value to Zero

// enabling boolean expression. 
bool wall = false;
bool hit = false;
bool bullethit = false;

#endif