Decompile roomIsActive and discover if_room_onscreen AI command

src/include/commands.h

@@ -609,10 +609,15 @@
 	u1, \
 	label,
 
-// Used by CIA guards in chicago
-#define cmd0049(pad, label) \
+/**
+ * Checks if a room is visible.
+ *
+ * If the room argument is 10,000 or more than it will subtract 10,000, treat
+ * it as a pad number, and use the room that the pad is in.
+ */
+#define if_room_onscreen(room, label) \
 	mkshort(0x0049), \
-	mkshort(pad), \
+	mkshort(room), \
 	label,
 
 #define if_chr_in_view(label) \

src/include/constants.h

@@ -1544,8 +1544,9 @@
 #define RACE_EYESPY   3
 #define RACE_ROBOT    4
 
-#define ROOMFLAG_00004000 0x00004000
-#define ROOMFLAG_00008000 0x00008000
+#define ROOMFLAG_ACTIVE 0x0004
+#define ROOMFLAG_4000   0x4000
+#define ROOMFLAG_8000   0x8000
 
 #define SAVEFILEFLAG_USED_TRANSFERPAK     0x23
 #define SAVEFILEFLAG_CI_TOUR_DONE         0x24

src/include/game/chr/chraicommands.h

@@ -76,7 +76,7 @@
 /*0x0046*/ bool aiIfNeverBeenOnScreen(void);
 /*0x0047*/ bool ai0047(void);
 /*0x0048*/ bool ai0048(void);
-/*0x0049*/ bool ai0049(void);
+/*0x0049*/ bool aiIfRoomActive(void);
 /*0x004a*/ bool ai004a(void);
 /*0x004b*/ bool aiIfNearMiss(void);
 /*0x004c*/ bool aiIfSeesSuspiciousItem(void);

src/include/game/game_157db0.h

@@ -44,7 +44,7 @@ u32 func0f15d4a8(void);
 u32 func0f15d570(void);
 u32 func0f15d63c(void);
 u32 func0f15d6c4(void);
-u32 func0f15d6e8(u32 arg0);
+bool roomIsActive(s32 room_id);
 u32 func0f15d744(void);
 u32 func0f15d7a0(void);
 u32 func0f15d808(void);

src/include/gvars/gvars.h

@@ -764,7 +764,7 @@ extern u32 var800a491c;
 extern u32 var800a4920;
 extern u32 var800a4924;
 extern struct room *g_RoomPtrs;
-extern u32 var800a492c;
+extern u8 *g_MpRoomVisibility;
 extern u32 var800a4930;
 extern u32 var800a4bec;
 extern u32 var800a4bf0;