Use DIR constants for createvobject

Also uses event object ids in LinkContestRoom1

include/constants/global.h

@@ -76,4 +76,14 @@
 #define OPTIONS_BATTLE_STYLE_SHIFT 0
 #define OPTIONS_BATTLE_STYLE_SET 1
 
+#define DIR_NONE        0
+#define DIR_SOUTH       1
+#define DIR_NORTH       2
+#define DIR_WEST        3
+#define DIR_EAST        4
+#define DIR_SOUTHWEST   5
+#define DIR_SOUTHEAST   6
+#define DIR_NORTHWEST   7
+#define DIR_NORTHEAST   8
+
 #endif // GUARD_CONSTANTS_GLOBAL_H