KIT INCLUDES:

Introduction

In today’s tutorial, we will make a Snake maze game using a 16*2 LCD display and Ps2 Joystick module with Arduino Nano. This is one of the most popular game of our childhood. This project is based on 16*2 LCD which gives a little room for a snake.

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download: https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

Joystick Module

5V/3.3V Compatible
Analog Output

Arduino Nano

**16*2 LCD Display**

5V power supply ( Also available for +3V)
Negative voltage optional for +3V power supply

CIRCUIT CONNECTION

***ARDUINO to JOYSTICK***

ARDUINO Nano	JOYSTICK
A0	VRx
A1	VRy
A2	SW
5v	5v
Gnd	Gnd

***ARDUINO to LCD***

ARDUINO Nano	LCD
Gnd	Vss
5v	Vdd
Middle pin of 10k potentiometer (Connect First pin of pot with Gnd and 3^rd pin to VCC)	V0
Digital Pin 12	RS
GND	R/W
Digital Pin 11	E
Digital Pin 5	DB4
Digital Pin 4	DB5
Digital Pin 3	DB6
Digital Pin 2	DB7
5v	LED+
GND	LED-

To connect multiple GND and 5V wires soldering may be required or you can use a breadboard.

CODE

Run the code given below and play the game.

https://drive.google.com/open?id=1k-uWJC3eXr3v3cIpWMKx0mhjfi8y-rfG

#include <LiquidCrystal.h>

#define JOYSTICK_X_PIN A0

#define JOYSTICK_Y_PIN A1

#define JOYSTICK_Z_PIN A2

#define NUM_KEYS 5

#define JOYSTICK_RELEASED 0

#define JOYSTICK_UP_ 1

#define JOYSTICK_DOWN_ 2

#define JOYSTICK_LEFT_ 3

#define JOYSTICK_RIGHT_ 4

#define ROWS 2

// number of indicator rows

#define levels 4

// difficulty levels

#define MAX_SNAKE_LENGTH 25

// maximum length of snake

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

unsigned long time, timeNow;

int gameSpeed;

boolean skip, gameOver, gameStarted;

int olddir;

int selectedLevel;

byte key=0;

byte oldkey=0;

byte Field[8*ROWS*16];

struct partdef

{

int row,column,dir;

struct partdef *next;

};

typedef partdef part;

part *head, *tail;

int collected;

unsigned int pc,pr;

//———————————————-

// display on the screen

void drawMatrix()

{

boolean levelz[levels][4][16] = {

{{false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false},

{false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false},

{false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false}},

{{true,false,false,false,false,false,false,false,false,false,false,false,false,false,false,true},

{true,false,false,false,false,false,false,false,false,false,false,false,false,false,false,true},

{true,false,false,false,false,false,false,false,false,false,false,false,false,false,false,true}},

{{true,false,false,false,true,false,false,false,false,false,false,true,false,false,false,true},

{true,false,false,false,false,false,false,false,true,false,false,false,false,false,false,true},

{true,false,false,false,true,false,false,false,false,false,false,true,false,false,false,true},

{true,false,false,false,false,false,false,false,true,false,false,false,false,false,false,true}},

{{true,false,true,false,false,false,false,false,false,true,false,false,false,true,false,false},

{false,false,false,false,true,false,false,true,false,false,false,true,false,false,false,true},

{true,false,true,false,false,false,false,false,false,true,false,false,false,true,false,false},

{false,false,false,false,true,false,false,true,false,false,false,true,false,false,false,true}}

};

byte myChar[8];

boolean special;

int cc=0;

if (!gameOver)

{

ChangeDot(pr, pc, true);

for(int r=0;r<ROWS;r++)

{

for(int c=0;c<16;c++)

{

special = false;

for(int i=0;i<8;i++)

{

byte b=B00000;

if ((Field[16 * (r*8+i) + (c*5+0)/5] & (1 << ((c*5+0) % 5))) >> ((c*5+0) % 5)) {b+=B10000; special = true;}

if ((Field[16 * (r*8+i) + (c*5+1)/5] & (1 << ((c*5+1) % 5))) >> ((c*5+1) % 5)) {b+=B01000; special = true;}

if ((Field[16 * (r*8+i) + (c*5+2)/5] & (1 << ((c*5+2) % 5))) >> ((c*5+2) % 5)) {b+=B00100; special = true;}

if ((Field[16 * (r*8+i) + (c*5+3)/5] & (1 << ((c*5+3) % 5))) >> ((c*5+3) % 5)) {b+=B00010; special = true;}

if ((Field[16 * (r*8+i) + (c*5+4)/5] & (1 << ((c*5+4) % 5))) >> ((c*5+4) % 5)) {b+=B00001; special = true;}

myChar[i] = b;

}

if (special)

{

lcd.createChar(cc, myChar);

lcd.setCursor(c,r);

lcd.write(byte(cc));

cc++;

}

else

{

lcd.setCursor(c,r);

if (levelz[selectedLevel][r][c]) lcd.write(255);

else lcd.write(128);

}

//———————————-

void freeList()

{

part *p,*q;

p = tail;

while (p!=NULL)

{

q = p;

p = p->next;

free(q);

}

head = tail = NULL;

}

//———————————-

void gameOverFunction()

{

delay(1000);

lcd.clear();

freeList();

lcd.setCursor(3,0);

lcd.print(“Game Over!”);

lcd.setCursor(4,1);

lcd.print(“Score: “);

lcd.print(collected);

delay(15000);

}

//———————————-

void growSnake()

{

part *p;

p = (part*)malloc(sizeof(part));

p->row = tail->row;

p->column = tail->column;

p->dir = tail->dir;

p->next = tail;

tail = p;

}

//———————————-

// a new dot on the screen

void newPoint()