File content as of revision 7:9ecf9df1e95e:

#include "mbed.h"
#include "N5110.h"
#define DIRECTION_TOLERANCE 0.05// Tolerance of Joystick 

BusOut myleds(p24,p23,p22); //External LEDS
InterruptIn StartButton(p18);//Start button
N5110 lcd(p7,p8,p9,p10,p11,p13,p26); //PWR, SCE, RST, DC, MOSI, SCLK, LED
AnalogIn Bright(p20);//Pot to adjust brightness
Ticker timer; //Create ticker object
DigitalIn button(p17);// Joystick Button
AnalogIn xPot(p15);// Joystick x-direction
AnalogIn yPot(p16);// Joystick y-direction
int i=3; // Pacman's starting position
int j = 3;

Ticker pollJoystick; // timer to regularly read the joystick

int coinflag = 1;
int coinflag2 = 1;
int coinflag3 = 1;
int coinflag4 = 1;
int coinflag5 = 1;


enum DirectionName { // create enumerated type (0,1,2,3 etc. for direction)
    UP,         // could be extended for diagonals etc.
    DOWN,
    LEFT,
    RIGHT,
    CENTRE,
    UNKNOWN
};

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

Joystick joystick; // create struct variable


void calibrateJoystick() // read default positions of the joystick to calibrate later readings
{
    button.mode(PullDown);
    // must not move during calibration
    joystick.x0 = xPot;  // initial positions in the range 0.0 to 1.0 (0.5 if centred exactly)
    joystick.y0 = yPot;
}

void updateJoystick()
{

    joystick.x = xPot - joystick.x0; // read current joystick values relative to calibrated values (in range -0.5 to 0.5, 0.0 is centred)
    joystick.y = yPot - joystick.y0;
    joystick.button = button; // read button state

    // calculate direction depending on x,y values
    // tolerance allows a little lee-way in case joystick not exactly in the stated direction
    if ( fabs(joystick.y) < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
        joystick.direction = CENTRE;
    } else if ( joystick.y > DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
        joystick.direction = UP;
    } else if ( joystick.y < DIRECTION_TOLERANCE && fabs(joystick.x) < DIRECTION_TOLERANCE) {
        joystick.direction = DOWN;
    } else if ( joystick.x > DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
        joystick.direction = RIGHT;
    } else if ( joystick.x < DIRECTION_TOLERANCE && fabs(joystick.y) < DIRECTION_TOLERANCE) {
        joystick.direction = LEFT;
    } else {
        joystick.direction = UNKNOWN;
    }

}

void drawMap()
{

    lcd.drawRect(41,20,10,2,1);
    lcd.drawRect(41,0,2,10,1);
    lcd.drawRect(7,8,24,2,1);
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    lcd.drawRect(83,47,1,1,2); //Round off shape 
    
}

void checkRight()
{


    int r = 0;//Variable for right movement check
    if(lcd.getPixel (i+3,j))//Check 4 pixels to the right
        r++;
    if(lcd.getPixel (i+4,j))//Check 5 pixels to the right
        r++;
    if (r==2) { // Condition for solid obstacles
        i--;

    }
}
void checkLeft()
{
    int l = 0 ; // Variable for left movement check
    if(lcd.getPixel (i-3,j))//Check 4 pixels to the left
        l++;
    if(lcd.getPixel (i-4,j))//Check 5 pixels to the left
        l++;
    if (l==2) { // Condition for solid obstacles
        i++;


    }
}
void checkUp()
{
    int u=0;
    if(lcd.getPixel (i,j-3))//Check 4 pixels above
        u++;
    if(lcd.getPixel (i,j-4))//Check 5 pixels above
        u++;
    if (u==2) { // Condition for solid obstacles
        j++;
    }
}

void checkDown()
{
    int d=0;
    if(lcd.getPixel (i,j+3))//Check 4 pixels below
        d++;
    if(lcd.getPixel (i,j+4))//Check 5 pixels below
        d++;
    if (d==2) { // Condition for solid obstacles
        j--;
    }
}

void drawCoin()
{

    if (coinflag) {
        lcd.drawCircle(10,3,2,0);
    }
    if (coinflag2) {
        lcd.drawCircle(20,3,2,0);
    }
    if (coinflag3) {
        lcd.drawCircle(30,3,2,0);
    }
    if (coinflag4) {
        lcd.drawCircle(50,3,2,0);
    }
    if (coinflag5) {
        lcd.drawCircle(60,3,2,0);
    }
}
void checkCoin()
{
    if (i==10 &&j==3) {
        coinflag=0;
    }
    if (i==20 &&j==3) {
        coinflag2=0;
    }
    if (i==30 &&j==3) {
        coinflag3=0;
    }
    if (i==50 &&j==3) {
        coinflag4=0;
    }
    if (i==60 &&j==3) {
        coinflag5=0;
    }

}

void Joystickcheck()
{
    if (joystick.direction == UP) {
        j--;
    }
    if (joystick.direction == DOWN) {
        j++;
    }
    if (joystick.direction == LEFT) {
        i--;
    }
    if (joystick.direction == RIGHT) {
        i++;
    }

}
void drawPacman()
{
    if(joystick.direction == RIGHT) {
        lcd.setPixel(i,j);
        lcd.setPixel(i-1,j);//Direction dependent (left and right)
        lcd.setPixel(i-2,j);//Direction dependent (left and right)
        lcd.setPixel(i-3,j);//Direction dependent (left and right)
        lcd.setPixel(i,j+1);
        lcd.setPixel(i,j+2);
        lcd.setPixel(i,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i,j-2);
        lcd.setPixel(i,j-3);
        lcd.setPixel(i-1,j+3);
        lcd.setPixel(i+1,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i-2,j+2);
        lcd.setPixel(i-1,j+2);
        lcd.setPixel(i+2,j+2);
        lcd.setPixel(i+1,j+2);
        lcd.setPixel(i-1,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-2,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-3,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-1,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-2,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-3,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-1,j-2);
        lcd.setPixel(i-2,j-2);
        lcd.setPixel(i+1,j-2);
        lcd.setPixel(i+2,j-2);
        lcd.setPixel(i+1,j-3);
        lcd.setPixel(i-1,j-3);


    }   else if(joystick.direction == LEFT) {
        lcd.setPixel(i,j);
        lcd.setPixel(i,j+1);
        lcd.setPixel(i,j+2);
        lcd.setPixel(i,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i,j-2);
        lcd.setPixel(i,j-3);
        lcd.setPixel(i-1,j+3);
        lcd.setPixel(i+1,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i-2,j+2);
        lcd.setPixel(i-1,j+2);
        lcd.setPixel(i+2,j+2);
        lcd.setPixel(i+1,j+2);
        lcd.setPixel(i-1,j-2);
        lcd.setPixel(i-2,j-2);
        lcd.setPixel(i+1,j-2);
        lcd.setPixel(i+2,j-2);
        lcd.setPixel(i+1,j-3);
        lcd.setPixel(i-1,j-3);
        lcd.setPixel(i+1,j);//Direction dependent(left and right)
        lcd.setPixel(i+2,j);//Direction dependent(left and right)
        lcd.setPixel(i+3,j);//Direction dependent (left and right)
        lcd.setPixel(i+1,j+1);//Direction dependent (left and right)
        lcd.setPixel(i+2,j+1);//Direction dependent (left and right)
        lcd.setPixel(i+3,j+1);//Direction dependent (left and right)
        lcd.setPixel(i+1,j-1);//Direction dependent (left and right)
        lcd.setPixel(i+2,j-1);//Direction dependent (left and right)
        lcd.setPixel(i+3,j-1);//Direction dependent (left and right)



    } else if(joystick.direction == UP) {
        lcd.setPixel(i,j);
        lcd.setPixel(i+1,j);
        lcd.setPixel(i+2,j);
        lcd.setPixel(i+3,j);
        lcd.setPixel(i-1,j);
        lcd.setPixel(i-2,j);
        lcd.setPixel(i-3,j);
        lcd.setPixel(i,j+1);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j+1);//Direction dependent(Up and Down)
        lcd.setPixel(i+2,j+1);
        lcd.setPixel(i+3,j+1);
        lcd.setPixel(i-1,j+1);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j+1);
        lcd.setPixel(i-3,j+1);
        lcd.setPixel(i,j+2);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j+2);//Direction dependent(Up and Down)
        lcd.setPixel(i+2,j+2);
        lcd.setPixel(i-1,j+2);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j+2);
        lcd.setPixel(i-1,j+3);//Direction dependent(Up and Down)
        lcd.setPixel(i,j+3);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j+3);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j-1);
        lcd.setPixel(i-3,j-1);
        lcd.setPixel(i+3,j-1);
        lcd.setPixel(i+2,j-1);
        lcd.setPixel(i+2,j-2);
        lcd.setPixel(i-2,j-2);








    } else if (joystick.direction == DOWN) {
        lcd.setPixel(i,j);
        lcd.setPixel(i+1,j);
        lcd.setPixel(i+2,j);
        lcd.setPixel(i+3,j);
        lcd.setPixel(i-1,j);
        lcd.setPixel(i-2,j);
        lcd.setPixel(i-3,j);
        lcd.setPixel(i,j-1);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j-1);//Direction dependent(Up and Down)
        lcd.setPixel(i+2,j+1);
        lcd.setPixel(i+3,j+1);
        lcd.setPixel(i-1,j-1);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j+1);
        lcd.setPixel(i-3,j+1);
        lcd.setPixel(i,j-2);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j-2);//Direction dependent(Up and Down)
        lcd.setPixel(i+2,j+2);
        lcd.setPixel(i-1,j-2);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j+2);
        lcd.setPixel(i-1,j-3);//Direction dependent(Up and Down)
        lcd.setPixel(i,j-3);//Direction dependent(Up and Down)
        lcd.setPixel(i+1,j-3);//Direction dependent(Up and Down)
        lcd.setPixel(i-2,j-1);
        lcd.setPixel(i-3,j-1);
        lcd.setPixel(i+3,j-1);
        lcd.setPixel(i+2,j-1);
        lcd.setPixel(i+2,j-2);
        lcd.setPixel(i-2,j-2);

    } else {
        lcd.setPixel(i,j);
        lcd.setPixel(i-1,j);//Direction dependent (left and right)
        lcd.setPixel(i-2,j);//Direction dependent (left and right)
        lcd.setPixel(i-3,j);//Direction dependent (left and right)
        lcd.setPixel(i,j+1);
        lcd.setPixel(i,j+2);
        lcd.setPixel(i,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i,j-2);
        lcd.setPixel(i,j-3);
        lcd.setPixel(i-1,j+3);
        lcd.setPixel(i+1,j+3);
        lcd.setPixel(i,j-1);
        lcd.setPixel(i-2,j+2);
        lcd.setPixel(i-1,j+2);
        lcd.setPixel(i+2,j+2);
        lcd.setPixel(i+1,j+2);
        lcd.setPixel(i-1,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-2,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-3,j+1);//Direction dependent (left and right)
        lcd.setPixel(i-1,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-2,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-3,j-1);//Direction dependent (left and right)
        lcd.setPixel(i-1,j-2);
        lcd.setPixel(i-2,j-2);
        lcd.setPixel(i+1,j-2);
        lcd.setPixel(i+2,j-2);
        lcd.setPixel(i+1,j-3);
        lcd.setPixel(i-1,j-3);
    }
}


void Boundarycheck()
{
    if (i<3) {
        i=3;
    }
    if (j<3) {
        j=3;
    }
    if (j>44) {
        j=44;
    }
    if (i>80) {
        i=80;
    }
}

int main()
{

    lcd.init();
    calibrateJoystick();  // get centred values of joystick
    pollJoystick.attach(&updateJoystick,1.0/10.0);  // read joystick 10 times per second

    while(1) {
        lcd.clear();
        drawPacman();
        drawMap();
        drawCoin();
        checkRight();
        checkLeft();
        checkDown();
        checkUp();
        Joystickcheck();
        Boundarycheck();
        checkCoin();
        lcd.refresh();
    }
}