Functional ASCII grid initialization

3 files changed, 75 insertions, 19 deletions

diff --git a/README.md b/README.md
index 5ef0ae0..31fdbd4 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1 @@
 # Abelian Sandpile model
-## compile command:
-gcc -Wall abellian_sandpile.c -o abellian_sandpile $(pkg-config --cflags --libs sdl2) -lm
diff --git a/abellian_sandpile b/abellian_sandpile
index 95132c3..127bf1b 100755
--- a/abellian_sandpile
+++ b/abellian_sandpile
diff --git a/abellian_sandpile.c b/abellian_sandpile.c
index ec6966b..9d2e7b4 100644
--- a/abellian_sandpile.c
+++ b/abellian_sandpile.c
@@ -1,7 +1,9 @@
 #include <asm-generic/ioctls.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/ioctl.h>
+#include <unistd.h>
 
 #define CLEAR_GRID "\033[0m"
 #define COLOR_RED "\033[31m"    // cell value 4
@@ -9,36 +11,92 @@
 #define COLOR_YELLOW "\033[31m" // cell value 2
 #define COLOR_WHITE "\033[31m"  // cell value 1
 
-#define WIDTH 40
-#define HEIGHT 40
-
-int init_grid(int positions[HEIGHT][WIDTH]);
-int draw_new_positions();
-int render();
+int init_grid(int height, int width, int (*positions)[width]);
+int get_new_positions(int height, int width, int (*positions)[width],
+                      int (*new_positions)[width]);
+int render(int height, int width, int (*positions)[width],
+           int (*new_positions)[width]);
 
 int main() {
+  int startup_status = 0;
   // gets terminal window size
   struct winsize w;
-  // ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+  ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+  if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) == -1) {
+    fprintf(stderr, "Failed to get terminal window size");
+    return 1;
+  }
 
-  int positions[HEIGHT][WIDTH];
-  int (*ppositions)[] = positions;
-  int new_positions[HEIGHT][WIDTH];
+  int terminal_height = w.ws_row;
+  int terminal_width = w.ws_col;
+
+  int (*positions)[terminal_width] =
+      malloc(terminal_height * terminal_width * sizeof(int));
+  if (positions == NULL) {
+    fprintf(stderr, "Failed to allocate for positions");
+    return 1;
+  }
+  // fill array with zeros
+  memset(positions, 0, terminal_height * terminal_width * sizeof(int));
+
+  int (*new_positions)[terminal_width] =
+      malloc(terminal_height * terminal_width * sizeof(int));
+  if (new_positions == NULL) {
+    fprintf(stderr, "Failed to allocate for new_positions");
+    free(positions);
+    return 1;
+  }
+  // fill array with zeros
+  memset(new_positions, 0, terminal_height * terminal_width * sizeof(int));
+
+  printf("The terminal size is: %d rows, %d columns\n", terminal_height,
+         terminal_width);
 
   printf("starting abellian sandpile simulation\n");
-  init_grid(ppositions);
-  printf("\ninitialized grid");
+
+  startup_status = init_grid(terminal_height, terminal_width, positions);
+  if (startup_status) {
+    fprintf(stderr, "Failed to initialize grid");
+  }
+  get_new_positions(terminal_width, terminal_width, positions, new_positions);
+
+  free(positions);
+  free(new_positions);
   return 0;
 }
 
-int init_grid(int positions[HEIGHT][WIDTH]) {
-  for (int i = 0; i < HEIGHT; i++) {
-    for (int j = 0; j < WIDTH; j++) {
-      positions[i][j] = 0;
-      printf("%d", positions);
+int init_grid(int height, int width, int (*positions)[width]) {
+  printf("\033[H\033[J Starting abellian sandpile model.....\n");
+  for (int i = 0; i < height; i++) {
+    for (int j = 0; j < width; j++) {
+      printf(" ");
     }
     printf("\n");
   }
+  return 0;
+}
+
+int get_new_positions(int height, int width, int (*positions)[width],
+                      int (*new_positions)[width]) {
+  new_positions = positions;
+
+  // getting new positions
+  for (int i = 0; i < height; i++) {
+    for (int j = 0; j < width; i++) {
+      if (positions[i][j] >= 4) {
+        // add some logic here
+        new_positions[i][j] = 0;
+        new_positions[i][j] = positions[i + 1][j] + 1;
+        new_positions[i][j] = positions[i - 1][j] + 1;
+        new_positions[i][j] = positions[i][j + 1] + 1;
+        new_positions[i][j] = positions[i][j - 1] + 1;
+      }
+    }
+  }
+  return 0;
+}
 
+int render(int height, int width, int (*positions)[width],
+           int (*new_positions)[width]) {
   return 0;
 }