The example of this article is to share the C language to achieve 2048 small game specific code, for your reference, the specific content is as follows

It has the following characteristics:

1. linux finish

2. Non-blocking keyboard reading

3. Randomly generate 2 and 4

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define TTY_PATH "/dev/tty"
#define STTY_ON "stty raw -echo -F"
#define STTY_OFF "stty -raw echo -F"

int map[4][4];

typedef struct node
{
 int x;
 int y;
 int num;
}Node;
Node node;

void init_map()// Initializes all squares
{
 int i, j;
 for(i=0; i<4; i++)
  for(j=0; j<4; j++)
   map[i][j] = 0;
}

void new_node()// Add squares to avoid repetition.
{
 int x = 0, y = 0 ,num = 0;
 do{
 int fals = 1;
 int i,j;
 for(i=0; i<4; i++)
  for(j=0; j<4; j++)
   if(map[i][j] == 0)
    fals =0;
 if(fals)// The new box cannot be filled in. The game fails
 {
  system("clear");
  printf("game over!!!!!!!!!!!\n");
  exit(0);
 }
 x = rand() % 4;
 y = rand() % 4;
 num = rand() % 2;

 if(num == 0)
  num = 3;
 else if(num == 1)
  num = 5;
 }while(map[x][y] > 0);
  node.x = x;
  node.y = y;
  node.num = num;
  map[x][y] = node.num;
}

void show()// Color printed number
{
 int i, j;
 for(i=0; i<4; i++)
 {
  for(j=0; j<4; j++)
  {
   if(map[i][j]%2 == 1)
   {
    map[i][j] -= 1;
    printf("\33[31m%d\33[0m\t",map[i][j]);
   }
   else if(map[i][j] == 0)
   {
    printf("%d\t",map[i][j]);
   }
   else if(map[i][j] == 2)
   {
    printf("\33[32m%d\33[0m\t",map[i][j]);
   }
   else if(map[i][j] == 4)
   {
    printf("\33[33m%d\33[0m\t",map[i][j]);
   }
   else if(map[i][j] == 8)
   {
    printf("\33[34m%d\33[0m\t",map[i][j]);
   }
   else if(map[i][j] == 16)
   {
    printf("\33[35m%d\33[0m\t",map[i][j]);
   }
   else if(map[i][j] == 32)
   {
    printf("\33[36m%d\33[0m\t",map[i][j]);
   }
   else
   {
    printf("\33[44m%d\33[0m\t",map[i][j]);
   }
  }
  printf("\n");
 }
}
void left()
{
 int i, j, z, tmp;
 for(i=0; i<4; i++)// All squares move left
  for(j=0; j<4; j++)
   if(map[i][j] == 0 )
    for(z = j + 1; z<4; z++)
     if(map[i][z] > 0)
     {
      tmp = map[i][j];
      map[i][j] = map[i][z];
      map[i][z] = tmp;
      break;
     }
 for(i=0; i<4; i++)// If the number of squares is the same, add them together and arrange them by calling the main function multiple times
  for(j=0; j<4; j++)
   if(map[i][j] > 0 )
    for(z = j + 1; z<4; z++)
     if(map[i][z] > 0)
      if(map[i][z] == map[i][j])
      {
       map[i][j] *= 2;
       map[i][z] = 0;
      }else
       break;
     else
      break;
   else
    break;
}

void right()
{
 int i, j, z, tmp;
 for(i=0; i<4; i++)
  for(j=3; j>=0; j--)
   if(map[i][j] == 0 )
    for(z = j-1; z>=0; z--)
     if(map[i][z] > 0)
     {
      tmp = map[i][j];
      map[i][j] = map[i][z];
      map[i][z] = tmp;
      break;
     }
 for(i=0; i<4; i++)
  for(j=3; j>=0; j--)
   if(map[i][j] > 0 )
    for(z = j-1; z>=0; z--)
     if(map[i][z] > 0)
      if(map[i][z] == map[i][j])
      {
       map[i][j] *= 2;
       map[i][z] = 0;
      }else
       break;
     else
      break;
   else
    break;
}
void up()
{
 int i, j, z, tmp;
 for(i=0; i<4; i++)
  for(j=0; j<4; j++)
   if(map[j][i] == 0 )
    for(z = j+1; z<4; z++)
     if(map[z][i] > 0)
     {
      tmp = map[j][i];
      map[j][i] = map[z][i];
      map[z][i] = tmp;
      break;
     }
 for(i=0; i<4; i++)
  for(j=0; j<4; j++)
   if(map[j][i] > 0 )
    for(z = j+1; z<4; z++)
     if(map[z][i] > 0)
      if(map[z][i] == map[j][i])
      {
       map[j][i] *= 2;
       map[z][i] = 0;
      }else
       break;
     else
      break;
   else
    break;
}
void down()
{
 int i, j, z, tmp;
 for(i=0; i<4; i++)
  for(j=3; j>=0; j--)
   if(map[j][i] == 0 )
    for(z = j-1; z>=0; z--)
     if(map[z][i] > 0)
     {
      tmp = map[j][i];
      map[j][i] = map[z][i];
      map[z][i] = tmp;
      break;
     }
 for(i=0; i<4; i++)
  for(j=3; j>=0; j--)
   if(map[j][i] > 0 )
    for(z = j-1; z>=0; z--)
     if(map[z][i] > 0)
      if(map[z][i] == map[j][i])
      {
       map[j][i] *= 2;
       map[z][i] = 0;
      }else
       break;
     else
      break;
   else
    break;
}
void move(char ch)
{
 switch(ch)
 {
  case 'a':
   left();
   break;
  case 'd':
   right();
   break;
  case 'w':
   up();
   break;
  case 's':
   down();
   break;
 }
}

char in_direct()// Non-blocking input
{
 fd_set fd;
 struct timeval tv;
 char ch;
 FD_ZERO(&fd);
 FD_SET(0, &fd);
 tv.tv_sec = 0;
 tv.tv_usec = 10;
 if(select(1, &fd ,NULL, NULL, &tv) > 0)
 {
   ch = getchar();
 }
 return ch;
}
int main()
{
 srand(time(NULL));
 init_map();
 new_node();
 show();
 char ch;
 int i=0;
 while(1)
 {
  system(STTY_ON TTY_PATH);
  ch = in_direct();
  system(STTY_OFF TTY_PATH);
  if(ch=='a'||ch=='d'||ch=='s'||ch=='w')
  {
   system("clear");
   for(i=0;i<3;i++)// You have to do it multiple times
    move(ch);
   new_node();
   show();

  }
  if(ch=='q')// Quit the game
  {
   system("clear");
   printf("game over!!!!!!!!\n");
   break;
  }
  usleep(500000);
 }
 return 0;
}