C console repainting stuttering/not fluid

问题

I am trying to make a simple snake game on console. I am using an int matrix to store all the data (borders, snake, food to eat) at their exact location.

I use this main code for now to run the program :

int main()
{
    int tab[28][120];
    create(tab, 28, 120);
    paint(tab, 28, 120);
    char i = '1';
    char direction = 'R';
    while(i != 'q')
    {
        if (kbhit())
            i =getch();
        translate(tab, direction, 28, 120);
        paint(tab, 28, 120);
        Sleep(300);
    }   
}

The main problem being, every time I repaint the matrix, it stutters. I tried putting the if(kbhit()) statement in a for() loop with another paint() call while taking of the Sleep(300) to speed up the paint process but it still stutters, just faster.

Would using threads help ? I am not good at understanding them.

here is the whole program that goes with the main for those who want to test it:

    #include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <Windows.h>

void paint(int tab[28][120], int ligneMax, int colonneMax)
{
    system("cls");
    for (int i = 0; i < ligneMax; i++)
    {
        for (int j = 0; j < colonneMax; j++)
        {
            printf("%c", tab[i][j]);
        }
        printf("\n");
    }
}

void create(int tab[28][120], int Nbligne, int Nbcolonne)
{
    int randligne = rand() % 26 + 1;
    int randcols = rand() % 118 + 1;
    for (int i = 0; i < Nbligne; i++)
    {
        for (int j = 0; j < Nbcolonne; j++)
        {
            tab[i][j] = ' ';
            if (i == 0 || i == Nbligne - 1)
                tab[i][j] = 205;
            if (j == 0 || j == Nbcolonne - 1)
                tab[i][j] = 186;
            if (i == 0 && j == 0)
                tab[i][j] = 201;
            if (i == 0 && j == Nbcolonne - 1)
                tab[i][j] = 187;
            if (i == Nbligne - 1 && j == 0)
                tab[i][j] = 200;
            if (i == Nbligne - 1 && j == Nbcolonne - 1)
                tab[i][j] = 188;
            if (i == 14 && j == 60)
                tab[i][j] = 254;
            if (i == 14 && j == 59)
                tab[i][j] = 184;
            if (i == 14 && j == 58)
                tab[i][j] = 184;
            if (i == randligne && j == randcols)
                tab[i][j] = 176;
        }
    }
}

void translate(int tab[28][120], char direction, int Nbligne, int Nbcolonne)
{
    if (direction == 'R')
    {
        for (int i = 0; i < Nbligne; i++)
        {
            for (int j = 0; j < Nbcolonne; j++)
            {
                if (tab[i][j] == 254)
                {
                    tab[i][j] = 184;
                    tab[i][j + 1] = 254;
                    goto stop;
                }
            }
        }
        stop: NULL;
    }
}

I am aware the translate function is complete (it only moves the head right for now), but it does matter on the present issue.

来源：https://stackoverflow.com/questions/50119458/c-console-repainting-stuttering-not-fluid

标签

console-application

paint