rogue.c

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <windows.h>
#include <conio.h>
#define CLS SetConsoleCursorPosition(handle, (COORD){0, 0})

#define W (40)
#define H (20)
#define INB(v, a, b) (v >= a && v <= b)

static char buff[W * H];

static void setchar(int x, int y, char c)
{
    if (INB(x, 0, W - 1) && INB(y, 0, H - 1))
        buff[x + y * W] = c;
}

static void render(void)
{
    for (int i = 0; i < W * H; ++i)
    {
        if (i % W == 0)
            putchar('\n');
        putchar(buff[i]);
    }
    putchar('\n');
}

int main(void)
{
    system("cls");
    SetConsoleTitle("Roguelike");
    ShowCursor(FALSE);

    HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
    char running = 1;
    int x = W / 2, y = H / 2;
    int cmd;

    while (running)
    {
        // render
        CLS;
        memset(buff, '_', sizeof buff);
        setchar(x, y, '@');
        render();

        // update
        switch ((cmd = getch()))
        {
            case 'a': x--; break;
            case 'd': x++; break;
            case 'w': y--; break;
            case 's': y++; break;
            case 27: running = 0; break;
            default: break;
        }

    }

    return 0;
}