Snake Game in C++

Snake Game in C++

Hello everyone, in this article we are going to create Snake Game in C++. This will be a simple console-based application in which the player can play the snake game like we usually play in our mobile application.

Features of snake game in C++

  • The player will be able to move the snake in four directions by pressing the up, down, left, and right keys
  • The snake has to eat the food to get a score and it grows as it keeps on eating the food.
  • The snake must not hit the wall or its own tail, if it does then the snake dies, and the game is over.
  • After the game is over, the player can hit enter again to replay.
  • On pressing the space bar key, the game can be paused.
  • The current score count is updated as the snake eats the food

Complete Code for Snake Game in C++

We will use Code::Blocks IDE to develop this application. Open the Code::Blocks IDE and create a new project with the name snakegame, now in the main.cpp file paste the following code and run it.

#include<stdio.h>
#include<conio.h>
#include<ctype.h>
#include<stdlib.h>
#include<windows.h>
#include<time.h>
#include<string.h>
#define LEFT 1
#define RIGHT 2
#define UP 3
#define DOWN 4

//This method is used to provide a particular color to elements
void textcolor(int fc,int bc=-1){
	if(fc<0 || fc>15)
		return;
	HANDLE h;
	h = GetStdHandle(STD_OUTPUT_HANDLE);
	if(bc>=0 && bc<16)
		SetConsoleTextAttribute(h,fc|bc*16);
	else
		SetConsoleTextAttribute(h,fc);
}

//This method is used to provide a particular color to elements
void textcolor(char *fc,char *bc=""){
	int x,y=16;
	char *colors[]={"Black","Blue","Green","Aqua","Red","Purple","Yellow","White","Gray",
	"LightBlue","LightGreen","LightAqua","LightRed","LightPurple","LightYellow","BrightWhite"};
	for(x=0;x<16;x++)
		if(strcmpi(colors[x],fc)==0)
			break;
	if(strlen(bc)>0)
		for(y=0;y<16;y++)
			if(strcmpi(colors[y],bc)==0)
				break;
	textcolor(x,y);
}

//This method is used to provide a particular color to elements
void textcolor(char *fc,int bc){
	int x;
	char *colors[]={"Black","Blue","Green","Aqua","Red","Purple","Yellow","White","Gray",
	"LightBlue","LightGreen","LightAqua","LightRed","LightPurple","LightYellow","BrightWhite"};
	for(x=0;x<16;x++)
		if(strcmpi(colors[x],fc)==0)
			break;
	textcolor(x,bc);
}

//This method is used to provide a particular color to elements
void textcolor(int fc,char *bc){
	int y;
	char *colors[]={"Black","Blue","Green","Aqua","Red","Purple","Yellow","White","Gray",
	"LightBlue","LightGreen","LightAqua","LightRed","LightPurple","LightYellow","BrightWhite"};
	if(strlen(bc)>0)
		for(y=0;y<16;y++)
			if(strcmpi(colors[y],bc)==0)
				break;
	textcolor(fc,y);
}

//This method is used to set the position to a particular coordinate
void gotoxy(int x, int y)
{
 COORD coord;
 coord.X = x;
 coord.Y = y;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}

//This method is used to draw the texts on the screen
void getup(){
	HANDLE hout;
	CONSOLE_CURSOR_INFO cursor;
	hout = GetStdHandle(STD_OUTPUT_HANDLE);
	cursor.dwSize=1;
	cursor.bVisible=false;
	SetConsoleCursorInfo(hout, &cursor);
	system("mode con:cols=80 lines=25");
	system("title Snake Game");
	system("cls");
	textcolor("Yellow");
	printf("\n  %c",218);
	int x;
	for(x=0;x<75;x++)
		printf("%c",196);
	printf("%c  ",191);
	for(x=0;x<17;x++){
		gotoxy(2,x+2);
		printf("%c",179);
		gotoxy(78,x+2);
		printf("%c ",179);
	}
	printf("  %c",192);
	for(x=0;x<75;x++)
		printf("%c",196);
	printf("%c  ",217);
	printf(" %c",218);
	for(x=0;x<21;x++)
	printf("%c",196);
	printf("%c\n",191);
	printf("  %cPress Enter to Replay%c\n",179,179);
	printf("  %c",192);
	for(x=0;x<21;x++)
		printf("%c",196);
	printf("%c",217);

	gotoxy(59,20);
	printf("%c",218);
	for(x=0;x<18;x++)
		printf("%c",196);
	printf("%c",191);
	gotoxy(59,21);
	printf("%c SCORE : 100      %c",179,179);
	gotoxy(59,22);
	printf("%c STATUS: Playing  %c",179,179);
	gotoxy(59,23);
	printf("%c",192);
	for(x=0;x<18;x++)
		printf("%c",196);
	printf("%c",217);
	gotoxy(32,21);
	printf("Eat the food #");
	gotoxy(32,22);
	printf("Press 'space' to Pause");
	textcolor(7);
}

//This method is used to update the score variable on the right side down screen
void score(int sc){
	gotoxy(69,21);
	printf("%6d",sc*10);
}

//This method is used to update the status variable which is initially set to playing on the right side down screen
void status(char *s,int c=7){
	gotoxy(69,22);
	textcolor(c);
	int x;
	for(x=0;x<strlen(s);x++)
		printf("%c",s[x]);
	for(;x<8;x++)
		printf(" ");
	textcolor(7);
}

// This is the main method, the program starts from here
int main(){
	getup();
	register int flow,size,i,xb,yb;
	int speed,restart=1,tmp,xpos[100],ypos[100],scr;
	srand(time(NULL));
	while(true){
		if(restart){
			status("Playing",10);
			for(int k=1;k<75;k+=2)
				for(int j=0;j<17;j++){
					gotoxy(k+3,j+2);
					printf(" ");
				}
			size=5;
			speed=200;
			scr=0;
			score(scr);
			flow=RIGHT;
			xpos[0]=20;
			for(i=0;i<size;i++){
				xpos[i]=xpos[0]-i*2;
				ypos[i]=10;
			}
			for(i=0;i<size;i++){
				gotoxy(xpos[i],ypos[i]);
				printf("*");
			}
			for(tmp=1;true;){
				do{
					xb=rand()%75+3;
				}while(xb%2!=0);
				yb=rand()%17+2;
				for(i=0;i<size;i++)
					if(xb==xpos[i] && yb==ypos[i]){
						tmp=0; break;
					}
				if(tmp)
					break;
			}
			gotoxy(xb,yb);
			textcolor("lightred");
			printf("#");
			textcolor(7);
			restart=0;
		}
		while(!kbhit() && !restart)	{
			if(xpos[0]==xb && ypos[0]==yb){
				for(tmp=1;true;){
					do{
						xb=rand()%75+3;
					}while(xb%2!=0);
					yb=rand()%17+2;
					for(i=0;i<size;i++)
						if(xb==xpos[i] && yb==ypos[i]){
							tmp=0; break;
						}
					if(tmp)
						break;
				}
				gotoxy(xb,yb);
				textcolor("lightred");
				printf("#");
				textcolor(7);
				size++;
				scr++;
				speed-=3;
				score(scr);
			}
			gotoxy(xpos[size-1],ypos[size-1]);
			for(i=size-1;i>0;i--){
				xpos[i]=xpos[i-1];
				ypos[i]=ypos[i-1];
			}
			switch(flow){
				case RIGHT :xpos[i]+=2; break;
				case LEFT :	xpos[i]-=2; break;
				case UP :	ypos[i]-=1; break;
				case DOWN :	ypos[i]+=1;
			}
			tmp=1;
			for(i=1;i<size;i++)
				if(xpos[i]==xpos[0] && ypos[i]==ypos[0]){
					tmp=0;
					break;
				}
			if(xpos[0]>76 || xpos[0]<4 || ypos[0]<2 ||ypos[0]>18)
				tmp=0;
			if(tmp){
				printf(" ");
				gotoxy(xpos[0],ypos[0]);
				printf("O");
				gotoxy(xpos[1],ypos[1]);
				printf("*");
			}
			else{
				textcolor("LIGHTRED");
				printf("*");
				gotoxy(xpos[1],ypos[1]);
				printf("O");
				for(i=2;i<size;i++){
					gotoxy(xpos[i],ypos[i]);
					printf("*");
				}
				textcolor(7);
				status("GameOver",12);
				restart=1;
				getch();
			}
			//delay(speed);
			Sleep(speed);
		}
		char ch=getch();
		switch(tolower(ch)){
			case 'x' : 	system("cls");
						return 0;
			case ' ' : status("Paused");
						while(true){
							char z=getch();
							if(z=='x')
								return 0;
							if(z==' ')
								break;
						}
						status("Playing",10);
						break;
			case -32: {
				char chh=getch();
				if(chh==72 && flow!=DOWN)
					flow=UP;
				else if(chh==80 && flow!=UP)
					flow=DOWN;
				else if(chh==75 && flow!=RIGHT)
					flow=LEFT;
				else if(chh==77 && flow!=LEFT)
					flow=RIGHT;
				break;
			}
		}
	}
}

Output for Snake Game in C++

Image Output:

output

Video Output:

Conclusion

We have successfully developed a simple Snake Game in C++. As it is a console application this is easy to understand and work with. I hope this was helpful, you should try to change the code here and there to understand how the program is working.

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