Port mevent2.c from pokefirered

asm/mevent_news.s

@@ -9,7 +9,7 @@
 sub_801DB68: @ 801DB68
 	push {r4,r5,lr}
 	adds r4, r0, 0
-	bl GetSaveBlock1Field356C
+	bl sub_801B044
 	adds r5, r0, 0
 	movs r0, 0x3
 	adds r1, r4, 0
@@ -55,7 +55,7 @@ _0801DBB8:
 	thumb_func_start sub_801DBC0
 sub_801DBC0: @ 801DBC0
 	push {lr}
-	bl GetSaveBlock1Field356C
+	bl sub_801B044
 	movs r1, 0
 	strb r1, [r0]
 	strb r1, [r0, 0x1]
@@ -72,7 +72,7 @@ sub_801DBDC: @ 801DBDC
 	ldr r0, =0x0000402e
 	bl GetVarPointer
 	adds r4, r0, 0
-	bl GetSaveBlock1Field356C
+	bl sub_801B044
 	adds r2, r0, 0
 	ldr r0, [r2]
 	lsls r0, 24
@@ -103,7 +103,7 @@ _0801DC10:
 sub_801DC20: @ 801DC20
 	push {r4-r6,lr}
 	ldr r6, =gSpecialVar_Result
-	bl GetSaveBlock1Field356C
+	bl sub_801B044
 	adds r4, r0, 0
 	bl IsMysteryEventEnabled
 	cmp r0, 0

data/mevent_801BAAC.s

@@ -3,12 +3,6 @@
 
 	.section .rodata
 
-	.align 2
-gUnknown_082F0DE8:: @ 82F0DE8
-	.2byte 0x013a, 0x013b, 0x013c, 0x013d, 0x013e, 0x013f, 0x0140, 0x0141
-	.2byte 0x0142, 0x0143, 0x0144, 0x0145, 0x0146, 0x0147, 0x0148, 0x0149
-	.2byte 0x014a, 0x014b, 0x014c, 0x014d
-
 	.align 2
 gUnknown_082F0E10:: @ 82F0E10
 	.byte 0x00, 0x02, 0x03

include/constants/flags.h

@@ -336,24 +336,23 @@
 #define FLAG_RECEIVED_AURORA_TICKET          0x13A // RECEIVED Aurora Ticket in Mystery Gift
 #define FLAG_RECEIVED_MYSTIC_TICKET          0x13B // RECEIVED Mystic Ticket in Mystery Gift
 #define FLAG_RECEIVED_OLD_SEA_MAP            0x13C // RECEIVED Old Sea Map in Mystery Gift
-
-#define FLAG_UNUSED_0x13D                    0x13D // Unused Flag
-#define FLAG_UNUSED_0x13E                    0x13E // Unused Flag
-#define FLAG_UNUSED_0x13F                    0x13F // Unused Flag
-#define FLAG_UNUSED_0x140                    0x140 // Unused Flag
-#define FLAG_UNUSED_0x141                    0x141 // Unused Flag
-#define FLAG_UNUSED_0x142                    0x142 // Unused Flag
-#define FLAG_UNUSED_0x143                    0x143 // Unused Flag
-#define FLAG_UNUSED_0x144                    0x144 // Unused Flag
-#define FLAG_UNUSED_0x145                    0x145 // Unused Flag
-#define FLAG_UNUSED_0x146                    0x146 // Unused Flag
-#define FLAG_UNUSED_0x147                    0x147 // Unused Flag
-#define FLAG_UNUSED_0x148                    0x148 // Unused Flag
-#define FLAG_UNUSED_0x149                    0x149 // Unused Flag
-#define FLAG_UNUSED_0x14A                    0x14A // Unused Flag
-#define FLAG_UNUSED_0x14B                    0x14B // Unused Flag
-#define FLAG_UNUSED_0x14C                    0x14C // Unused Flag
-#define FLAG_UNUSED_0x14D                    0x14D // Unused Flag
+#define FLAG_UNUSED_MYSTERY_GIFT_0x13D       0x13D
+#define FLAG_UNUSED_MYSTERY_GIFT_0x13E       0x13E
+#define FLAG_UNUSED_MYSTERY_GIFT_0x13F       0x13F
+#define FLAG_UNUSED_MYSTERY_GIFT_0x140       0x140
+#define FLAG_UNUSED_MYSTERY_GIFT_0x141       0x141
+#define FLAG_UNUSED_MYSTERY_GIFT_0x142       0x142
+#define FLAG_UNUSED_MYSTERY_GIFT_0x143       0x143
+#define FLAG_UNUSED_MYSTERY_GIFT_0x144       0x144
+#define FLAG_UNUSED_MYSTERY_GIFT_0x145       0x145
+#define FLAG_UNUSED_MYSTERY_GIFT_0x146       0x146
+#define FLAG_UNUSED_MYSTERY_GIFT_0x147       0x147
+#define FLAG_UNUSED_MYSTERY_GIFT_0x148       0x148
+#define FLAG_UNUSED_MYSTERY_GIFT_0x149       0x149
+#define FLAG_UNUSED_MYSTERY_GIFT_0x14A       0x14A
+#define FLAG_UNUSED_MYSTERY_GIFT_0x14B       0x14B
+#define FLAG_UNUSED_MYSTERY_GIFT_0x14C       0x14C
+#define FLAG_UNUSED_MYSTERY_GIFT_0x14D       0x14D
 
 #define FLAG_MIRAGE_TOWER_VISIBLE            0x14E
 #define FLAG_CHOSE_CLAW_FOSSIL               0x14F // Player chose Claw Fossil

include/global.h

@@ -808,6 +808,76 @@ struct SaveTrainerHill
     /*0x3D6E*/ u16 tag:2; // x40, x80 = xC0
 };
 
+struct MysteryEventStruct
+{
+    u8 unk_0_0:2;
+    u8 unk_0_2:3;
+    u8 unk_0_5:3;
+    u8 unk_1;
+};
+
+ struct MEventBuffer_3120_Sub
+{
+    u16 unk_00;
+    u8 unk_02;
+    u8 unk_03;
+    u8 unk_04[40];
+    u8 unk_2C[10][40];
+};
+
+ struct MEventBuffer_3120
+{
+    u32 crc;
+    struct MEventBuffer_3120_Sub data;
+};
+
+ struct MEventBuffer_32E0_Sub
+{
+    u16 unk_00;
+    u16 unk_02;
+    u32 unk_04;
+    u8 unk_08_0:2;
+    u8 unk_08_2:4;
+    u8 unk_08_6:2;
+    u8 unk_09;
+    u8 unk_0A[40];
+    u8 unk_32[40];
+    u8 unk_5A[4][40];
+    u8 unk_FA[40];
+    u8 unk_122[40];
+};
+
+ struct MEventBuffer_32E0
+{
+    u32 crc;
+    struct MEventBuffer_32E0_Sub data;
+};
+
+ struct MEventBuffer_3430_Sub
+{
+    u16 unk_00;
+    u16 unk_02;
+    u16 unk_04;
+    u16 unk_06;
+    u16 unk_08[2][7];
+};
+
+ struct MEventBuffer_3430
+{
+    u32 crc;
+    struct MEventBuffer_3430_Sub data;
+};
+
+ struct MEventBuffers
+{
+    /*0x000 0x322C*/ struct MEventBuffer_3120 buffer_000;
+    /*0x1c0 0x33EC*/ struct MEventBuffer_32E0 buffer_1c0;
+    /*0x310 0x353C*/ struct MEventBuffer_3430 buffer_310;
+    /*0x338 0x3564*/ u16 unk_338[4];
+    /*0x340 0x356C*/ struct MysteryEventStruct unk_340;
+    /*0x344 0x3570*/ u32 unk_344[2][5];
+}; // 0x36C 0x3598
+
 struct SaveBlock1
 {
     /*0x00*/ struct Coords16 pos;
@@ -884,14 +954,15 @@ struct SaveBlock1
     /*0x31A8*/ u8 giftRibbons[52];
     /*0x31DC*/ struct Roamer roamer;
     /*0x31F8*/ struct EnigmaBerry enigmaBerry;
-    /*0x322C*/ u8 field_322C[1260];
+    /*0x322C*/ struct MEventBuffers unk_322C;
+    /*0x3598*/ u8 field_3598[0x180];
     /*0x3718*/ u32 trainerHillTimes[4];
     /*0x3728*/ struct RamScript ramScript;
     /*0x3B14*/ struct RecordMixingGift recordMixingGift;
     /*0x3B24*/ u8 seen2[DEX_FLAGS_NO];
     /*0x3B58*/ LilycoveLady lilycoveLady;
     /*0x3B98*/ struct TrainerNameRecord trainerNameRecords[20];
-    /*0x3C88*/ u8 filler_3C88[0xDC];
+    /*0x3C88*/ u8 unk3C88[11][20];
     /*0x3D64*/ struct SaveTrainerHill trainerHill;
     /*0x3D70*/ struct WaldaPhrase waldaPhrase;
     // sizeof: 0x3D88

include/link.h

@@ -306,7 +306,7 @@ void sub_8009FAC(void);
 bool8 sub_800A4D8(u8 a0);
 u8 sub_800A9D8(void);
 u8 sub_800A0C8(s32, s32);
-u16 *GetSaveBlock1Field3564(void);
+u16 *sub_801B058(void);
 u8 sub_800A9A8(void);
 void sub_800AD10(void);
 void sub_800AB18(void);

include/main.h

@@ -42,6 +42,8 @@ struct Main
 
 extern const u8 gGameVersion;
 extern const u8 gGameLanguage;
+extern const u8 RomHeaderGameCode[4];
+extern const u8 RomHeaderSoftwareVersion;
 
 extern u16 gKeyRepeatStartDelay;
 extern bool8 gLinkTransferringData;

include/mevent.h

@@ -0,0 +1,36 @@
+#ifndef GUARD_MEVENT_H
+#define GUARD_MEVENT_H
+
+#include <gba/gba.h>
+
+struct MEvent_Str_1
+{
+    u16 unk_000;
+    size_t unk_004;
+    const void * unk_008;
+};
+
+struct MEvent_Str_2
+{
+    u8 fill_00[0x40];
+};
+
+struct MEventStruct_Unk1442CC
+{
+    u32 unk_00;
+    u16 unk_04;
+    u32 unk_08;
+    u16 unk_0C;
+    u32 unk_10;
+    u16 unk_14;
+    u16 unk_16[4];
+    struct MEventBuffer_3430_Sub unk_20;
+    u8 unk_44;
+    u8 unk_45[7];
+    u8 unk_4C[4];
+    u16 unk_50[6];
+    u8 unk_5C[4];
+    u8 unk_60;
+};
+
+#endif //GUARD_MEVENT_H

include/mevent_news.h

@@ -0,0 +1,6 @@
+#ifndef GUARD_MEVENT_NEWS_H
+#define GUARD_MEVENT_NEWS_H
+
+void sub_801DBC0(void);
+
+#endif //GUARD_MEVENT_NEWS_H

ld_script.txt

@@ -56,7 +56,7 @@ SECTIONS {
         src/link_rfu.o(.text);
         src/union_room.o(.text);
         asm/union_room.o(.text);
-        asm/mevent2.o(.text);
+        src/mevent2.o(.text);
         asm/mevent_801BAAC.o(.text);
         asm/mevent_server.o(.text);
         asm/mevent_server_ish.o(.text);
@@ -409,7 +409,8 @@ SECTIONS {
         src/link_rfu.o(.rodata);
         src/union_room.o(.rodata);
         data/union_room.o(.rodata);
-        data/mevent2.o(.rodata);
+        src/mevent2.o(.rodata);
+        data/mevent_801BAAC.o(.rodata);
         data/mevent_server.o(.rodata);
         data/union_room_chat.o(.rodata);
         data/berry_crush.o(.rodata);

src/easy_chat.c

@@ -1318,7 +1318,7 @@ void ShowEasyChatScreen(void)
         words = gSaveBlock2Ptr->apprentices[0].easyChatWords;
         break;
     case EASY_CHAT_TYPE_QUESTIONNAIRE:
-        words = GetSaveBlock1Field3564();
+        words = sub_801B058();
         break;
     default:
         return;
@@ -5531,7 +5531,7 @@ void InitializeEasyChatWordArray(u16 *words, u16 length)
 void sub_811F8BC(void)
 {
     int i;
-    u16 *words = GetSaveBlock1Field3564();
+    u16 *words = sub_801B058();
     for (i = 0; i < 4; i++)
         words[i] = 0xFFFF;
 }

src/mevent2.c

@@ -0,0 +1,626 @@
+#include "global.h"
+#include "util.h"
+#include "main.h"
+#include "event_data.h"
+#include "easy_chat.h"
+#include "script.h"
+#include "battle_tower.h"
+#include "mevent_news.h"
+#include "string_util.h"
+#include "new_game.h"
+#include "mevent.h"
+#include "constants/species.h"
+
+static EWRAM_DATA bool32 gUnknown_02022C70 = FALSE;
+
+void sub_801B180(void);
+void sub_801B14C(void);
+bool32 sub_801B114(const struct MEventBuffer_3120_Sub * data);
+bool32 sub_801B2CC(const struct MEventBuffer_32E0_Sub * data);
+void sub_801B330(void);
+void sub_801B368(void);
+void sub_801B9F8(void);
+void sub_801BA8C(u32 a0, u32 a1, u32 * a2, int a3);
+
+void sub_801AFD8(void)
+{
+    CpuFill32(0, &gSaveBlock1Ptr->unk_322C, sizeof(gSaveBlock1Ptr->unk_322C));
+    sub_801B180();
+    sub_811F8BC();
+}
+
+struct MEventBuffer_3120_Sub * sub_801B00C(void)
+{
+    return &gSaveBlock1Ptr->unk_322C.buffer_000.data;
+}
+
+struct MEventBuffer_32E0_Sub * sav1_get_mevent_buffer_1(void)
+{
+    return &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+}
+
+struct MEventBuffer_3430_Sub * sav1_get_mevent_buffer_2(void)
+{
+    return &gSaveBlock1Ptr->unk_322C.buffer_310.data;
+}
+
+struct MysteryEventStruct * sub_801B044(void)
+{
+    return &gSaveBlock1Ptr->unk_322C.unk_340;
+}
+
+u16 * sub_801B058(void)
+{
+    return gSaveBlock1Ptr->unk_322C.unk_338;
+}
+
+void sub_801B06C(void)
+{
+    sub_801B14C();
+}
+
+bool32 sub_801B078(const struct MEventBuffer_3120_Sub * src)
+{
+    if (!sub_801B114(src))
+        return FALSE;
+
+    sub_801B14C();
+    gSaveBlock1Ptr->unk_322C.buffer_000.data = *src;
+    gSaveBlock1Ptr->unk_322C.buffer_000.crc = CalcCRC16WithTable((void *)&gSaveBlock1Ptr->unk_322C.buffer_000.data, sizeof(struct MEventBuffer_3120_Sub));
+    return TRUE;
+}
+
+bool32 sub_801B0CC(void)
+{
+    if (CalcCRC16WithTable((void *)&gSaveBlock1Ptr->unk_322C.buffer_000.data, sizeof(struct MEventBuffer_3120_Sub)) != gSaveBlock1Ptr->unk_322C.buffer_000.crc)
+        return FALSE;
+    if (!sub_801B114(&gSaveBlock1Ptr->unk_322C.buffer_000.data))
+        return FALSE;
+
+    return TRUE;
+}
+
+bool32 sub_801B114(const struct MEventBuffer_3120_Sub * data)
+{
+    if (data->unk_00 == 0)
+        return FALSE;
+
+    return TRUE;
+}
+
+bool32 sub_801B128(void)
+{
+    const struct MEventBuffer_3120_Sub * data = &gSaveBlock1Ptr->unk_322C.buffer_000.data;
+    if (data->unk_02 == 0)
+        return FALSE;
+
+    return TRUE;
+}
+
+void sub_801B14C(void)
+{
+    CpuFill32(0, sub_801B00C(), sizeof(gSaveBlock1Ptr->unk_322C.buffer_000.data));
+    gSaveBlock1Ptr->unk_322C.buffer_000.crc = 0;
+}
+
+void sub_801B180(void)
+{
+    CpuFill32(0, sub_801B044(), sizeof(struct MysteryEventStruct));
+    sub_801DBC0();
+}
+
+bool32 sub_801B1A4(const u8 * src)
+{
+    const u8 * r5 = (const u8 *)&gSaveBlock1Ptr->unk_322C.buffer_000.data;
+    u32 i;
+    if (!sub_801B0CC())
+        return FALSE;
+
+    for (i = 0; i < sizeof(struct MEventBuffer_3120_Sub); i++)
+    {
+        if (r5[i] != src[i])
+            return FALSE;
+    }
+
+    return TRUE;
+}
+
+void sub_801B1E8(void)
+{
+    sub_801B330();
+    sub_801B368();
+    sub_801B9F8();
+    ClearRamScript();
+    sub_809D4D8();
+    sub_809D570();
+    ClearEReaderTrainer(&gSaveBlock2Ptr->frontier.ereaderTrainer);
+}
+
+bool32 sub_801B21C(const struct MEventBuffer_32E0_Sub * data)
+{
+    struct MEventBuffer_3430_Sub * r2;
+    struct MEventBuffer_32E0_Sub * r1;
+    if (!sub_801B2CC(data))
+        return FALSE;
+
+    sub_801B1E8();
+    memcpy(&gSaveBlock1Ptr->unk_322C.buffer_1c0.data, data, sizeof(struct MEventBuffer_32E0_Sub));
+    gSaveBlock1Ptr->unk_322C.buffer_1c0.crc = CalcCRC16WithTable((void *)&gSaveBlock1Ptr->unk_322C.buffer_1c0.data, sizeof(struct MEventBuffer_32E0_Sub));
+    r2 = &gSaveBlock1Ptr->unk_322C.buffer_310.data;
+    r1 = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+    r2->unk_06 = r1->unk_02;
+    return TRUE;
+}
+
+bool32 sub_801B27C(void)
+{
+    if (gSaveBlock1Ptr->unk_322C.buffer_1c0.crc != CalcCRC16WithTable((void *)&gSaveBlock1Ptr->unk_322C.buffer_1c0.data, sizeof(struct MEventBuffer_32E0_Sub)))
+        return FALSE;
+    if (!sub_801B2CC(&gSaveBlock1Ptr->unk_322C.buffer_1c0.data))
+        return FALSE;
+    if (!sub_80991F8())
+        return FALSE;
+
+    return TRUE;
+}
+
+bool32 sub_801B2CC(const struct MEventBuffer_32E0_Sub * data)
+{
+    if (data->unk_00 == 0)
+        return FALSE;
+    if (data->unk_08_0 > 2)
+        return FALSE;
+    if (!(data->unk_08_6 == 0 || data->unk_08_6 == 1 || data->unk_08_6 == 2))
+        return FALSE;
+    if (data->unk_08_2 > 7)
+        return FALSE;
+    if (data->unk_09 > 7)
+        return FALSE;
+
+    return TRUE;
+}
+
+bool32 sub_801B308(void)
+{
+    const struct MEventBuffer_32E0_Sub * data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+    if (data->unk_08_6 == 0)
+        return FALSE;
+
+    return TRUE;
+}
+
+void sub_801B330(void)
+{
+    CpuFill32(0, &gSaveBlock1Ptr->unk_322C.buffer_1c0.data, sizeof(struct MEventBuffer_32E0_Sub));
+    gSaveBlock1Ptr->unk_322C.buffer_1c0.crc = 0;
+}
+
+void sub_801B368(void)
+{
+    CpuFill32(0, sav1_get_mevent_buffer_2(), 18 * sizeof(u16));
+    gSaveBlock1Ptr->unk_322C.buffer_310.crc = 0;
+}
+
+u16 sub_801B39C(void)
+{
+    if (sub_801B27C())
+        return gSaveBlock1Ptr->unk_322C.buffer_1c0.data.unk_00;
+
+    return 0;
+}
+
+void sub_801B3C0(struct MEventBuffer_32E0_Sub * buffer)
+{
+    if (buffer->unk_08_6 == 1)
+        buffer->unk_08_6 = 0;
+}
+
+bool32 sub_801B3D8(u16 a0)
+{
+    if (a0 >= 1000 && a0 < 1020)
+        return TRUE;
+
+    return FALSE;
+}
+
+static const u16 sMysteryGiftFlags[] =
+{
+    FLAG_RECEIVED_AURORA_TICKET,
+    FLAG_RECEIVED_MYSTIC_TICKET,
+    FLAG_RECEIVED_OLD_SEA_MAP,
+    FLAG_UNUSED_MYSTERY_GIFT_0x13D,
+    FLAG_UNUSED_MYSTERY_GIFT_0x13E,
+    FLAG_UNUSED_MYSTERY_GIFT_0x13F,
+    FLAG_UNUSED_MYSTERY_GIFT_0x140,
+    FLAG_UNUSED_MYSTERY_GIFT_0x141,
+    FLAG_UNUSED_MYSTERY_GIFT_0x142,
+    FLAG_UNUSED_MYSTERY_GIFT_0x143,
+    FLAG_UNUSED_MYSTERY_GIFT_0x144,
+    FLAG_UNUSED_MYSTERY_GIFT_0x145,
+    FLAG_UNUSED_MYSTERY_GIFT_0x146,
+    FLAG_UNUSED_MYSTERY_GIFT_0x147,
+    FLAG_UNUSED_MYSTERY_GIFT_0x148,
+    FLAG_UNUSED_MYSTERY_GIFT_0x149,
+    FLAG_UNUSED_MYSTERY_GIFT_0x14A,
+    FLAG_UNUSED_MYSTERY_GIFT_0x14B,
+    FLAG_UNUSED_MYSTERY_GIFT_0x14C,
+    FLAG_UNUSED_MYSTERY_GIFT_0x14D,
+};
+
+bool32 sub_801B3F8(void)
+{
+    u16 value = sub_801B39C();
+    if (!sub_801B3D8(value))
+        return FALSE;
+
+    if (FlagGet(sMysteryGiftFlags[value - 1000]) == TRUE)
+        return FALSE;
+
+    return TRUE;
+}
+
+int sub_801B438(const struct MEventBuffer_3430_Sub * data, int size)
+{
+    int r3 = 0;
+    int i;
+    for (i = 0; i < size; i++)
+    {
+        if (data->unk_08[1][i] && data->unk_08[0][i])
+            r3++;
+    }
+
+    return r3;
+}
+
+bool32 sub_801B460(const struct MEventBuffer_3430_Sub * data1, const u16 * data2, int size)
+{
+    int i;
+    for (i = 0; i < size; i++)
+    {
+        if (data1->unk_08[1][i] == data2[1])
+            return TRUE;
+        if (data1->unk_08[0][i] == data2[0])
+            return TRUE;
+    }
+
+    return FALSE;
+}
+
+bool32 sub_801B4A4(const u16 * data)
+{
+    if (data[1] == 0)
+        return FALSE;
+    if (data[0] == 0)
+        return FALSE;
+    if (data[0] >= NUM_SPECIES)
+        return FALSE;
+    return TRUE;
+}
+
+int sub_801B4CC(void)
+{
+    struct MEventBuffer_32E0_Sub * data;
+    if (!sub_801B27C())
+        return 0;
+
+    data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+    if (data->unk_08_0 != 1)
+        return 0;
+
+    return sub_801B438(&gSaveBlock1Ptr->unk_322C.buffer_310.data, data->unk_09);
+}
+
+bool32 sub_801B508(const u16 * data)
+{
+    struct MEventBuffer_32E0_Sub * buffer = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+    int size = buffer->unk_09;
+    int i;
+    if (!sub_801B4A4(data))
+        return FALSE;
+
+    if (sub_801B460(&gSaveBlock1Ptr->unk_322C.buffer_310.data, data, size))
+        return FALSE;
+
+    for (i = 0; i < size; i++)
+    {
+        if (gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_08[1][i] == 0 && gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_08[0][i] == 0)
+        {
+            gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_08[1][i] = data[1];
+            gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_08[0][i] = data[0];
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+void sub_801B580(struct MEventStruct_Unk1442CC * data, bool32 a1)
+{
+    int i;
+    CpuFill32(0, data, sizeof(struct MEventStruct_Unk1442CC));
+    data->unk_00 = 0x101;
+    data->unk_04 = 1;
+    data->unk_08 = 1;
+
+    if (a1)
+    {
+        data->unk_0C = 5;
+        data->unk_10 = 0x0201;
+    }
+    else
+    {
+        data->unk_0C = 4;
+        data->unk_10 = 0x0200;
+    }
+
+    if (sub_801B27C())
+    {
+        data->unk_14 = sav1_get_mevent_buffer_1()->unk_00;
+        data->unk_20 = *sav1_get_mevent_buffer_2();
+        data->unk_44 = sav1_get_mevent_buffer_1()->unk_09;
+    }
+    else
+    {
+        data->unk_14 = 0;
+    }
+
+    for (i = 0; i < 4; i++)
+        data->unk_16[i] = gSaveBlock1Ptr->unk_322C.unk_338[i];
+
+    CopyTrainerId(data->unk_4C, gSaveBlock2Ptr->playerTrainerId);
+    StringCopy(data->unk_45, gSaveBlock2Ptr->playerName);
+    for (i = 0; i < 6; i++)
+        data->unk_50[i] = gSaveBlock1Ptr->easyChatProfile[i];
+
+    memcpy(data->unk_5C, RomHeaderGameCode, 4);
+    data->unk_60 = RomHeaderSoftwareVersion;
+}
+
+bool32 sub_801B6A0(const struct MEventStruct_Unk1442CC * data, bool32 a1)
+{
+    if (data->unk_00 != 0x101)
+        return FALSE;
+
+    if (!(data->unk_04 & 1))
+        return FALSE;
+
+    if (!(data->unk_08 & 1))
+        return FALSE;
+
+    if (!a1)
+    {
+        if (!(data->unk_0C & 4))
+            return FALSE;
+
+        if (!(data->unk_10 & 0x380))
+            return FALSE;
+    }
+
+    return TRUE;
+}
+
+u32 sub_801B6EC(const u16 * a0, const struct MEventStruct_Unk1442CC * a1, void * unused)
+{
+    if (a1->unk_14 == 0)
+        return 0;
+
+    if (*a0 == a1->unk_14)
+        return 1;
+
+    return 2;
+}
+
+u32 sub_801B708(const u16 * a0, const struct MEventStruct_Unk1442CC * a1, void * unused)
+{
+    int r4 = a1->unk_44 - sub_801B438(&a1->unk_20, a1->unk_44);
+    if (r4 == 0)
+        return 1;
+    if (sub_801B460(&a1->unk_20, a0, a1->unk_44))
+        return 3;
+    if (r4 == 1)
+        return 4;
+    return 2;
+}
+
+bool32 sub_801B748(const struct MEventStruct_Unk1442CC * a0, const u16 * a1)
+{
+    int i;
+    for (i = 0; i < 4; i++)
+    {
+        if (a0->unk_16[i] != a1[i])
+            return FALSE;
+    }
+
+    return TRUE;
+}
+
+int sub_801B770(const struct MEventStruct_Unk1442CC * a0)
+{
+    return sub_801B438(&a0->unk_20, a0->unk_44);
+}
+
+u16 sub_801B784(const struct MEventStruct_Unk1442CC * a0, u32 command)
+{
+    switch (command)
+    {
+    case 0:
+        return a0->unk_20.unk_00;
+    case 1:
+        return a0->unk_20.unk_02;
+    case 2:
+        return a0->unk_20.unk_04;
+    case 3:
+        return sub_801B770(a0);
+    case 4:
+        return a0->unk_44;
+    default:
+        AGB_ASSERT(0);
+        return 0;
+    }
+}
+
+void sub_801B7D8(u32 command)
+{
+    struct MEventBuffer_32E0_Sub * data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+    if (data->unk_08_0 == 2)
+    {
+        u16 * dest = NULL;
+        switch (command)
+        {
+        case 0:
+            dest = &gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_00;
+            break;
+        case 1:
+            dest = &gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_02;
+            break;
+        case 2:
+            dest = &gSaveBlock1Ptr->unk_322C.buffer_310.data.unk_04;
+            break;
+        case 3:
+            break;
+        case 4:
+            break;
+        }
+
+        if (dest == NULL)
+            AGB_ASSERT(0);
+        else if (++(*dest) > 999)
+            *dest = 999;
+    }
+}
+
+u16 mevent_081445C0(u32 command)
+{
+    switch (command)
+    {
+        case 0:
+        {
+            struct MEventBuffer_32E0_Sub *data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+            if (data->unk_08_0 == 2)
+            {
+                struct MEventBuffer_3430_Sub * buffer = &gSaveBlock1Ptr->unk_322C.buffer_310.data;
+                return buffer->unk_00;
+            }
+            break;
+        }
+        case 1:
+        {
+            struct MEventBuffer_32E0_Sub *data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+            if (data->unk_08_0 == 2)
+            {
+                struct MEventBuffer_3430_Sub * buffer = &gSaveBlock1Ptr->unk_322C.buffer_310.data;
+                return buffer->unk_02;
+            }
+            break;
+        }
+        case 2:
+        {
+            struct MEventBuffer_32E0_Sub *data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+            if (data->unk_08_0 == 2)
+            {
+                struct MEventBuffer_3430_Sub * buffer = &gSaveBlock1Ptr->unk_322C.buffer_310.data;
+                return buffer->unk_04;
+            }
+            break;
+        }
+        case 3:
+        {
+            struct MEventBuffer_32E0_Sub *data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+            if (data->unk_08_0 == 1)
+                return sub_801B4CC();
+            break;
+        }
+        case 4:
+        {
+            struct MEventBuffer_32E0_Sub *data = &gSaveBlock1Ptr->unk_322C.buffer_1c0.data;
+            if (data->unk_08_0 == 1)
+                return data->unk_09;
+            break;
+        }
+    }
+
+    AGB_ASSERT(0);
+    return 0;
+}
+
+void sub_801B940(void)
+{
+    gUnknown_02022C70 = FALSE;
+}
+
+bool32 sub_801B94C(u16 a0)
+{
+    gUnknown_02022C70 = FALSE;
+    if (a0 == 0)
+        return FALSE;
+
+    if (!sub_801B27C())
+        return FALSE;
+
+    if (gSaveBlock1Ptr->unk_322C.buffer_1c0.data.unk_00 != a0)
+        return FALSE;
+
+    gUnknown_02022C70 = TRUE;
+    return TRUE;
+}
+
+void sub_801B990(u32 a0, u32 a1)
+{
+    if (gUnknown_02022C70)
+    {
+        switch (a0)
+        {
+        case 2:
+            sub_801BA8C(2, a1, gSaveBlock1Ptr->unk_322C.unk_344[1], 5);
+            break;
+        case 0:
+            sub_801BA8C(0, a1, gSaveBlock1Ptr->unk_322C.unk_344[0], 5);
+            break;
+        case 1:
+            sub_801BA8C(1, a1, gSaveBlock1Ptr->unk_322C.unk_344[0], 5);
+            break;
+        default:
+            AGB_ASSERT(0);
+        }
+    }
+}
+
+void sub_801B9F8(void)
+{
+    CpuFill32(0, gSaveBlock1Ptr->unk_322C.unk_344, sizeof(gSaveBlock1Ptr->unk_322C.unk_344));
+}
+
+bool32 sub_801BA24(u32 a0, u32 * a1, int size)
+{
+    int i;
+    int j;
+
+    for (i = 0; i < size; i++)
+    {
+        if (a1[i] == a0)
+            break;
+    }
+
+    if (i == size)
+    {
+        for (j = size - 1; j > 0; j--)
+            a1[j] = a1[j - 1];
+
+        a1[0] = a0;
+        return TRUE;
+    }
+    else
+    {
+        for (j = i; j > 0; j--)
+            a1[j] = a1[j - 1];
+
+        a1[0] = a0;
+        return FALSE;
+    }
+}
+
+void sub_801BA8C(u32 a0, u32 a1, u32 * a2, int a3)
+{
+    if (sub_801BA24(a1, a2, a3))
+        sub_801B7D8(a0);
+}

sym_ewram.txt

@@ -46,8 +46,7 @@ gUnknown_02022C68: @ 2022C68
 gUnknown_02022C6C: @ 2022C6C
 	.space 0x4
 
-gUnknown_02022C70: @ 2022C70
-	.space 0x4
+	.include "src/mevent2.o"
 
 gUnknown_02022C74: @ 2022C74
 	.space 0x4