commit f455bb8155d56686c3935afbdecf09fe0de7a7f6
Author: lejulien <leo.julien.42@gmail.com>
Date:   Fri Jan 9 15:41:12 2026 +0100

    Initial commit

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..8c35ccf
--- /dev/null
+++ b/main.c
@@ -0,0 +1,270 @@
+#include "sand.h"
+#include <string.h>
+#include <stdlib.h>
+void
+	print_canvas(char *canvas, struct winsize *win)
+{
+	write(1, "\033[H", 3);
+	usleep(20000);
+	write(1, canvas, win->ws_col * win->ws_row);
+}
+
+void
+	ft_simulate(char *canvas, char *old_canvas, struct winsize *win)
+{
+	int x = 0;
+	int y = 0;
+
+	while (y < win->ws_row)
+	{
+		x = 0;
+		while (x < win->ws_col)
+		{
+			if (canvas[y * win->ws_col + x] == '#')
+			{
+				if (y < win->ws_row - 1)
+				{
+					if (canvas[(y + 1) * win->ws_col + x] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[(y + 1) * win->ws_col + x] = '#';
+					}
+					else if (x > 0 && canvas[(y + 1) * win->ws_col + (x - 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[(y + 1) * win->ws_col + (x - 1)] = '#';
+					}
+					else if (x < win->ws_col - 1 && canvas[(y + 1) * win->ws_col + (x + 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[(y + 1) * win->ws_col + (x + 1)] = '#';
+					}
+				}
+			}
+			else if (canvas[y * win->ws_col + x] == 'o')
+			{
+				if (y < win->ws_row - 1)
+				{
+					if (canvas[(y + 1) * win->ws_col + x] == ' ')
+					{
+							old_canvas[y * win->ws_col + x] = ' ';
+							old_canvas[(y + 1) * win->ws_col + x] = 'o';
+					}
+					else if (x < win->ws_col - 1 && canvas[y * win->ws_col + (x + 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[y * win->ws_col + (x + 1)] = 'o';
+					}
+					else if (x > 0 && canvas[y * win->ws_col + (x - 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[y * win->ws_col + (x - 1)] = 'o';
+					}
+					else if (x > 0 && canvas[(y + 1) * win->ws_col + (x - 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[(y + 1) * win->ws_col + (x - 1)] = 'o';
+					}
+					else if (x < win->ws_col - 1 && canvas[(y + 1) * win->ws_col + (x + 1)] == ' ')
+					{
+						old_canvas[y * win->ws_col + x] = ' ';
+						old_canvas[(y + 1) * win->ws_col + (x + 1)] = 'o';
+					}
+				}
+			}
+			else if (canvas[y * win->ws_col + x] == 'S')
+			{
+				if (y < win->ws_row - 1)
+				{
+					old_canvas[(y + 1) * win->ws_col + x] = '#';
+				}
+			}
+			else if (canvas[y * win->ws_col + x] == 'W')
+			{
+				if (y < win->ws_row - 1)
+				{
+					old_canvas[(y + 1) * win->ws_col + x] = 'o';
+				}
+			}
+			x++;
+		}
+		y++;
+	}
+}
+
+int
+	main(int ac, char **av)
+{
+	struct winsize win;
+	struct termios term;
+	struct termios oldterm;
+	int c_x = 0;
+	int c_y = 0;
+	int sim_state = 0;
+
+	tcgetattr(0, &oldterm);
+	tcgetattr(0, &term);
+	term.c_lflag &= ~(ICANON | ECHO);
+	term.c_cc[VMIN] = 0;
+	term.c_cc[VTIME] = 0;
+	tcsetattr(0, 0, &term);
+	ioctl(0, TIOCGWINSZ, &win);
+	char	canvas[win.ws_col * win.ws_row + 1];
+	char	old_canvas[win.ws_col * win.ws_row + 1];
+	memset(canvas, 32, win.ws_col * win.ws_row);
+	memcpy(old_canvas, canvas, win.ws_col * win.ws_row);
+	print_canvas(canvas, &win);
+	while ("non")
+	{
+		if (sim_state == 0)
+		{
+			memcpy(canvas, old_canvas, win.ws_col * win.ws_row);
+			char c;
+			if (read(0, &c, 1))
+			{
+				if (c == 32)
+				{
+					printf("\033[%d;%df", 0, 0);
+					fflush(0);
+					write(1, "EDIT_MODE", 9);
+					printf("\033[%d;%df", c_y + 1, c_x + 1);
+					fflush(0);
+					sim_state = 1;
+				}
+				if (c == 104)
+					sim_state = 3;
+			}
+			if (sim_state == 0)
+			{
+				ft_simulate(canvas, old_canvas, &win);
+				print_canvas(canvas, &win);
+			}
+		}
+		else if (sim_state == 2)
+		{
+			int c;
+			if (read(0, &c, 1))
+			{
+				if (c == 27)
+					sim_state = 0;
+			}
+		}
+		else if (sim_state == 3)
+		{
+			printf("\033[%d;%df", 20, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 21, 20);
+			printf("||                     Welcome to sandsim by lejulien                   ||");
+			printf("\033[%d;%df", 22, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 23, 20);
+			printf("|| space : edit Mode                ||  escape : go back to sim         ||");
+			printf("\033[%d;%df", 24, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 25, 20);
+			printf("|| S : Create sand source           ||  s : create sand                 ||");
+			printf("\033[%d;%df", 26, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 27, 20);
+			printf("|| W : create water source          ||  w : create water                ||");
+			printf("\033[%d;%df", 28, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 29, 20);
+			printf("|| b : create blocks                ||  return : remove things          ||");
+			printf("\033[%d;%df", 30, 20);
+			printf("==========================================================================");
+			printf("\033[%d;%df", 31, 20);
+			printf("||                         q : to quit the sim                          ||");
+			printf("\033[%d;%df", 32, 20);
+			printf("==========================================================================");
+			fflush(0);
+			sim_state = 2;
+		}
+		else if (sim_state == 1)
+		{
+			int c;
+			if (read(0, &c, 4))
+			{
+				if (c == 27) // escape
+				{
+					sim_state = 0;
+					continue ;
+				}
+				if (c == 4283163 && c_y > 0) // up
+				{
+					c_y -= 1;
+					write(1, &c, 3);
+				}
+				if (c == 4348699 && c_y < win.ws_row - 1) // down
+				{
+					c_y += 1;
+					write(1, &c, 3);
+				}
+				if (c == 4479771 && c_x > 0) // left
+				{
+					c_x -= 1;
+					write(1, &c, 3);
+				}
+				if (c == 4414235 && c_x < win.ws_col - 1) // right
+				{
+					c_x += 1;
+					write(1, &c, 3);
+				}
+				if (c == 115) // sand
+				{
+					old_canvas[c_y * win.ws_col + c_x] = '#';
+					write(1, "#", 1);
+					write(1, "\033[D", 3);
+				}
+				if (c == 83) // sand generator
+				{
+					old_canvas[c_y * win.ws_col + c_x] = 'S';
+					write(1, &c, 1);
+					write(1, "\033[D", 3);
+				}
+				if (c == 119) // water
+				{
+					old_canvas[c_y * win.ws_col + c_x] = 'o';
+					write(1, "o", 1);
+					write(1, "\033[D", 3);
+				}
+				if (c == 87) // water generator
+				{
+					old_canvas[c_y * win.ws_col + c_x] = 'W';
+					write(1, "W", 1);
+					write(1, "\033[D", 3);
+				}
+				if (c == 98) // Block
+				{
+					old_canvas[c_y * win.ws_col + c_x] = '=';
+					write(1, "=", 1);
+					c_x += 1;
+				}
+				if (c == 127) // delete
+				{
+					old_canvas[c_y * win.ws_col + c_x] = ' ';
+					write(1, " ", 1);
+					write(1, "\033[2D", 4);
+					c_x -= 1;
+				}
+				if (c == 113) // quit
+					exit(0);
+				if (c == 99)
+				{
+					memset(old_canvas, ' ', win.ws_col * win.ws_row);
+					memcpy(canvas, old_canvas, win.ws_col * win.ws_row);
+					print_canvas(canvas, &win);
+					printf("\033[%d;%df", 0, 0);
+					fflush(0);
+					write(1, "EDIT_MODE", 9);
+					printf("\033[%d;%df", c_y + 1, c_x + 1);
+					fflush(0);
+				}
+
+				c = 0;
+			}
+		}
+	}
+	tcsetattr(0, 0, &oldterm);
+	return (0);
+}
diff --git a/sand.h b/sand.h
new file mode 100644
index 0000000..ea1e7af
--- /dev/null
+++ b/sand.h
@@ -0,0 +1,9 @@
+#ifndef SAND_H
+#define SAND_H
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+
+#endif