prepare for compile time init of screens[]

globals.h

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: MIT */
 
-#define MAX_SCREENS 2 /* size of screens array */
+#define MAX_ERROR_MESSAGE_SIZE 60 /* size of error_message array */
+#define MAX_SCREEN_NAME_SIZE 20   /* size of the screen name array */
 
 #ifndef GLOBALS_H /* header guard */
 #define GLOBALS_H
@@ -17,11 +18,13 @@ enum ActiveScreen {
 };
 
 struct Screen {
-    char name[20];
+    char name[MAX_SCREEN_NAME_SIZE];
     WINDOW *win;
     void (*draw_screen)(struct Screen *, char *input); /* GETCH_TIMEOUT determines how often this is run, in ms */
 };
 
-struct Screen screens[MAX_SCREENS];
+/* TODO: put this in a screens.c file and include all screens there, that way the array can be initialized at compile
+ * time */
+extern struct Screen screens[];
 
 #endif