(main)+camera

This will be useful for zooming in.

main.c

@@ -7,6 +7,7 @@
 #include <stdio.h>
 
 #include <raylib.h>
+#include <raymath.h>
 
 struct State
 {
@@ -49,15 +50,17 @@ int main(void)
   state.data       = calloc(state.dwidth * state.dwidth, sizeof(*state.data));
   state.multiplier = state.window_len / state.dwidth;
 
+  Camera2D camera = {0};
+  camera.zoom     = 1.0f;
   InitWindow(state.window_len, state.window_len, "Abelian sand pile");
   SetTargetFPS(60);
+
   while (!WindowShouldClose())
   {
     step(&state);
     BeginDrawing();
     ClearBackground(BLACK);
-    DrawText("Hello, world!", 100, 100, 25, RAYWHITE);
-
+    BeginMode2D(camera);
     for (size_t i = 0; i < state.dwidth; ++i)
       for (size_t j = 0; j < state.dwidth; ++j)
       {
@@ -75,6 +78,7 @@ int main(void)
         DrawRectangle(i * state.multiplier, j * state.multiplier,
                       state.multiplier, state.multiplier, c);
       }
+    EndMode2D();
     EndDrawing();
   }
   CloseWindow();