Reverse engineered many of the multiplayer events

Some corrections to the way events are handled and identified.

6 files changed, 24 insertions, 13 deletions

diff --git a/include/constants/battle_frontier.h b/include/constants/battle_frontier.h
index ca9e3bc9f..1224c0f31 100644
--- a/include/constants/battle_frontier.h
+++ b/include/constants/battle_frontier.h
@@ -10,6 +10,8 @@
 #define FRONTIER_FACILITY_PIKE 5
 #define FRONTIER_FACILITY_PYRAMID 6
 #define NUM_FRONTIER_FACILITIES 7
+// The multiplayer battle colosseum rooms re-use VAR_FRONTIER_FACILITY.
+#define FRONTIER_FACILITY_DOUBLE_COLOSSEUM 9
 
 #define TENT_VERDANTURF 2
 #define TENT_FALLARBOR 3
diff --git a/include/link.h b/include/link.h
index b29d9b4e1..8c272699d 100644
--- a/include/link.h
+++ b/include/link.h
@@ -244,7 +244,7 @@ bool8 IsLinkTaskFinished(void);
 void CreateWirelessStatusIndicatorSprite(u8, u8);
 void sub_800ADF8(void);
 void sub_800B488(void);
-void sub_800A620(void);
+void CheckShouldAdvanceLinkState(void);
 void sub_8011BD0(void);
 u8 IsLinkMaster(void);
 void sub_800AC34(void);
@@ -299,8 +299,8 @@ extern struct LinkPlayer gLocalLinkPlayer;
 
 bool32 Link_AnyPartnersPlayingRubyOrSapphire(void);
 bool32 sub_800A03C(void);
-void sub_8009628(u8);
-u8 sub_800AA48(void);
+void SetLocalLinkPlayerId(u8);
+u8 GetSavedPlayerCount(void);
 void sub_8009FAC(void);
 bool8 sub_800A4D8(u8 a0);
 u8 sub_800A9D8(void);
diff --git a/include/overworld.h b/include/overworld.h
index b5c41b1e6..9434d5c28 100644
--- a/include/overworld.h
+++ b/include/overworld.h
@@ -8,11 +8,22 @@
 #define LINK_KEY_CODE_DPAD_LEFT 0x14
 #define LINK_KEY_CODE_DPAD_RIGHT 0x15
 #define LINK_KEY_CODE_UNK_2 0x16
-#define LINK_KEY_CODE_UNK_3 0x17
+#define LINK_KEY_CODE_EXIT_ROOM 0x17
 #define LINK_KEY_CODE_START_BUTTON 0x18
 #define LINK_KEY_CODE_A_BUTTON 0x19
 #define LINK_KEY_CODE_UNK_4 0x1A // I'd guess this is the B button?
 
+// These two are a hack to stop user input until link stuff can be
+// resolved.
+#define LINK_KEY_CODE_HANDLE_RECV_QUEUE 0x1B 
+#define LINK_KEY_CODE_HANDLE_SEND_QUEUE 0x1C
+#define LINK_KEY_CODE_UNK_7 0x1D
+#define LINK_KEY_CODE_UNK_8 0x1E
+
+#define MOVEMENT_MODE_FREE 0
+#define MOVEMENT_MODE_FROZEN 1
+#define MOVEMENT_MODE_SCRIPTED 2
+
 struct InitialPlayerAvatarState
 {
     u8 transitionFlags;
@@ -24,7 +35,7 @@ struct LinkPlayerEventObject
     u8 active;
     u8 linkPlayerId;
     u8 eventObjId;
-    u8 mode;
+    u8 movementMode;
 };
 
 // Exported RAM declarations
@@ -120,7 +131,7 @@ void CB1_Overworld(void);
 void CB2_OverworldBasic(void);
 void CB2_Overworld(void);
 void SetMainCallback1(void (*cb)(void));
-void sub_8085E94(void *a0);
+void SetUnusedCallback(void *a0);
 void CB2_NewGame(void);
 void CB2_WhiteOut(void);
 void CB2_LoadMap(void);
@@ -140,7 +151,7 @@ u32 sub_8087214(void);
 bool32 sub_808727C(void);
 u16 sub_8087288(void);
 u16 sub_808729C(void);
-u16 sub_80872B0(void);
+u16 QueueExitLinkRoomKey(void);
 u16 sub_80872C4(void);
 bool32 sub_8087598(void);
 bool32 sub_80875C8(void);
diff --git a/include/party_menu.h b/include/party_menu.h
index 702b4fde1..e67dd56f2 100644
--- a/include/party_menu.h
+++ b/include/party_menu.h
@@ -85,7 +85,7 @@ u8 GetItemEffectType(u16 item);
 void CB2_PartyMenuFromStartMenu(void);
 void sub_81B7F60(void);
 void sub_81B8448(void);
-void sub_81B8518(u8 unused);
+void InitChooseHalfPartyForBattle(u8 unused);
 void sub_81B8558(void);
 void sub_81B8904(u8 initArg, MainCallback callback);
 void sub_81B892C(void);
diff --git a/include/record_mixing.h b/include/record_mixing.h
index 0d50f46f9..d02b77f9c 100644
--- a/include/record_mixing.h
+++ b/include/record_mixing.h
@@ -7,7 +7,7 @@ struct PlayerHallRecords
     struct RankingHall2P twoPlayers[2];
 };
 
-void sub_80E6BE8(void);
+void EventScript_RecordMixingPlayerSpotTriggered(void);
 void GetPlayerHallRecords(struct PlayerHallRecords *dst);
 
 #endif //GUARD_RECORD_MIXING_H
diff --git a/include/save.h b/include/save.h
index 42ce8b3f3..de2dd5129 100644
--- a/include/save.h
+++ b/include/save.h
@@ -83,13 +83,11 @@ bool8 sub_8153380(void);
 bool8 sub_81533AC(void);
 u8 sub_81533E0(void);
 u8 sub_8153408(void);
-u8 sub_8153430(void);
-bool8 sub_8153474(void);
+u8 FullSaveGame(void); //FullSaveGame
+bool8 CheckSaveFile(void); //CheckSaveFile
 u8 Save_LoadGameData(u8 a1);
 u16 sub_815355C(void);
 u8 sub_81534D0(u8);
-u8 sub_8153430(void);
-bool8 sub_8153474(void);
 u32 TryCopySpecialSaveSection(u8 sector, u8* dst);
 u32 sub_8153634(u8 sector, u8* src);
 void sub_8153688(u8 taskId);