board size change feature

globals.h

@@ -1,14 +1,16 @@
 #ifndef GLOBALS_H_
 #define GLOBALS_H_
 
-// Total board size
-#define BRD_SIZE_X 30
-#define BRD_SIZE_Y 15
+typedef struct {
+  int x;
+  int y;
+} boardInfo;
 
-// Playable board coord range values
-#define PL_BRD_XS 1
-#define PL_BRD_XE BRD_SIZE_X - 2
-#define PL_BRD_YS 1
-#define PL_BRD_YE BRD_SIZE_Y - 2
+typedef struct {
+  int xs;
+  int xe;
+  int ys;
+  int ye;
+} playableBoardInfo;
 
 #endif  // GLOBALS_H_