add rule to Makefile to run RGFW build more quickly

Makefile

@@ -4,5 +4,8 @@ run_debug:
 run:
 	./build-unix.sh && ./shf
 
+rgfw:
+	./build-unix-rgfw-debug-.sh && ./shf-rgfw
+
 tests:
 	mlton -const "Exn.keepHistory true" shf-tests.mlb && ./shf-tests

ffi/rgfw-export.c

@@ -17,7 +17,11 @@ void closeWindow(RGFW_window* window) {
 }
 
 bool shouldCloseWindow(RGFW_window* window) {
-  return RGFW_window_shouldClose(window) != 0;
+  if (RGFW_window_shouldClose(window)) {
+    return true;
+  } else {
+    return false;
+  }
 }
 
 void swapBuffers(RGFW_window* window) {

shell/rgfw-loop.sml

@@ -1,20 +1,20 @@
 structure RgfwLoop =
 struct
-  fun loop (counter, window) =
+  fun loop window =
     if Rgfw.shouldCloseWindow window then
       Rgfw.closeWindow window
     else
-      let val () = print ("counter = " ^ Int.toString counter ^ "\n")
+      let 
-      in loop (counter + 1, window)
+        val () = Rgfw.swapBuffers window
+      in 
+        loop window
       end
 
   fun main () =
     let
-      val () = print "15\n"
       val window = Rgfw.createWindow ("shf", 0, 0, 1920, 1080)
-      val () = print "17\n"
     in
-      loop (0, window)
+      loop window
     end
 end