split mevent_server

4 files changed, 574 insertions, 481 deletions

diff --git a/src/mevent.c b/src/mevent.c
index b04ac5462..9638e0327 100644
--- a/src/mevent.c
+++ b/src/mevent.c
@@ -17,6 +17,9 @@
 #include "new_game.h"
 #include "string_util.h"
 #include "menews_jisan.h"
+#include "cereader_tool.h"
+#include "mystery_gift_menu.h"
+#include "help_system.h"
 #include "mevent.h"
 
 struct MEventTaskData1
@@ -40,14 +43,10 @@ bool32 sub_8143E64(const struct MEventBuffer_3120_Sub * src);
 void sub_8143E9C(void);
 void sub_8143ED0(void);
 bool32 sub_8144018(const struct MEventBuffer_32E0_Sub * src);
-bool32 sub_815D794(u8 *);
-void sub_81422FC(void);
-void sub_812B484(void);
 void sub_814407C(void);
 void sub_81440B4(void);
 void sub_8144824(u32, u32, u32 *, s32);
 void sub_8144790(void);
-u8 sub_815D6B4(u8 *);
 
 extern const u8 gUnknown_841DE52[];
 extern const u8 gUnknown_841DE53[];
@@ -90,7 +89,7 @@ const u16 gUnknown_8466F00[] = {
 
 struct MEvent_Str_1 gUnknown_3005ED0;
 
-bool32 gUnknown_203F3BC = FALSE;
+static EWRAM_DATA bool32 gUnknown_203F3BC = FALSE;
 
 void sub_81435DC(struct MEvent_Str_1 *a0, size_t a1, const void * a2)
 {
diff --git a/src/mevent_server.c b/src/mevent_server.c
index 251764441..027a7e994 100644
--- a/src/mevent_server.c
+++ b/src/mevent_server.c
@@ -9,517 +9,92 @@
 #include "battle_tower.h"
 #include "mystery_event_script.h"
 #include "mevent.h"
+#include "mevent_server.h"
 
 extern u16 gBlockRecvBuffer[][128];
 
-struct mevent_srv_sub
-{
-    s32 unk_00;
-    u8 unk_04;
-    u8 unk_05;
-    u16 unk_06;
-    u16 unk_08;
-    u16 unk_0A;
-    u16 unk_0C;
-    u16 unk_0E;
-    u16 unk_10;
-    u16 unk_12;
-    u16 unk_14;
-    void * unk_18;
-    void * unk_1C;
-    u32 (*unk_20)(struct mevent_srv_sub *);
-    u32 (*unk_24)(struct mevent_srv_sub *);
-};
-
-struct mevent_srv_ish
+struct mevent_srv_common
 {
     u32 unk_00;
     u32 unk_04;
-    u32 unk_08;
+    u32 mainseqno;
     u32 unk_0C;
-    u32 unk_10;
+    const void * unk_10;
     void * unk_14;
     void * unk_18;
     void * unk_1C;
     void * unk_20;
-    struct mevent_srv_sub unk_24;
-};
-
-struct send_recv_buff
-{
-    u16 unk0;
-    u16 unk2;
-    u16 unk4;
+    u8 filler_24[0x14];
+    struct mevent_srv_sub unk_38;
 };
 
-EWRAM_DATA struct mevent_srv_ish * gUnknown_203F3C0 = NULL;
-
-u32 sub_814490C(struct mevent_srv_sub *);
-u32 sub_81449E0(struct mevent_srv_sub *);
-void mevent_srv_ish_init(struct mevent_srv_ish *, u32, u32);
-u32 mevent_srv_ish_exec(struct mevent_srv_ish *);
-void sub_8144BC0(struct mevent_srv_ish *);
-
-extern u8 gUnknown_84687E0[0x400];
-
-u32 sub_8144844(struct mevent_srv_sub * srv)
-{
-    return srv->unk_20(srv);
-}
-
-u32 sub_8144850(struct mevent_srv_sub * srv)
-{
-    return srv->unk_24(srv);
-}
-
-void sub_814485C(struct mevent_srv_sub * srv, u32 a1, u32 a2)
-{
-    srv->unk_04 = a1;
-    srv->unk_05 = a2;
-    srv->unk_00 = 0;
-    srv->unk_12 = 0;
-    srv->unk_14 = 0;
-    srv->unk_10 = 0;
-    srv->unk_0A = 0;
-    srv->unk_0C = 0;
-    srv->unk_08 = 0;
-    srv->unk_1C = NULL;
-    srv->unk_18 = NULL;
-    srv->unk_24 = sub_81449E0;
-    srv->unk_20 = sub_814490C;
-}
-
-void sub_8144888(struct mevent_srv_sub * srv, u32 a1, void * a2, u32 a3)
-{
-    srv->unk_00 = 0;
-    srv->unk_0E = a1;
-    srv->unk_10 = 0;
-    srv->unk_12 = 0;
-    if (a3 != 0)
-        srv->unk_14 = a3;
-    else
-        srv->unk_14 = 0x400;
-    srv->unk_1C = a2;
-}
-
-void sub_81448AC(struct mevent_srv_sub * srv, u32 a1, void * a2)
-{
-    srv->unk_00 = 0;
-    srv->unk_06 = a1;
-    srv->unk_08 = 0;
-    srv->unk_0A = 0;
-    srv->unk_0C = 0;
-    srv->unk_18 = a2;
-}
-
-void sub_81448BC(u32 recv_idx, void * dest, size_t size)
-{
-    memcpy(dest, gBlockRecvBuffer[recv_idx], size);
-}
-
-bool32 sub_81448D8(u32 recv_idx)
-{
-    if ((GetBlockReceivedStatus() >> recv_idx) & 1)
-        return TRUE;
-    else
-        return FALSE;
-}
-
-void sub_81448FC(u32 recv_idx)
-{
-    ResetBlockReceivedFlag(recv_idx);
-}
-
-bool32 sub_814490C(struct mevent_srv_sub * srv)
-{
-    struct send_recv_buff buff;
-
-    switch (srv->unk_00)
-    {
-        case 0:
-            if (sub_81448D8(srv->unk_05))
-            {
-                sub_81448BC(srv->unk_05, &buff, sizeof(buff));
-                srv->unk_0C = buff.unk4;
-                srv->unk_0A = buff.unk2;
-                if (srv->unk_0C > 0x400)
-                {
-                    sub_80FA190();
-                    return FALSE;
-                }
-                else if (srv->unk_06 != buff.unk0)
-                {
-                    sub_80FA190();
-                    return FALSE;
-                }
-                else
-                {
-                    srv->unk_08 = 0;
-                    sub_81448FC(srv->unk_05);
-                    ++srv->unk_00;
-                }
-            }
-            break;
-        case 1:
-            if (sub_81448D8(srv->unk_05))
-            {
-                size_t r3 = srv->unk_08 * 252;
-                if (srv->unk_0C - r3 <= 252)
-                {
-                    sub_81448BC(srv->unk_05, srv->unk_18 + r3, srv->unk_0C - r3);
-                    ++srv->unk_08;
-                    ++srv->unk_00;
-                }
-                else
-                {
-                    sub_81448BC(srv->unk_05, srv->unk_18 + r3, 252);
-                    ++srv->unk_08;
-                }
-                sub_81448FC(srv->unk_05);
-            }
-            break;
-        case 2:
-            if (CalcCRC16WithTable(srv->unk_18, srv->unk_0C) != srv->unk_0A)
-            {
-                sub_80FA190();
-                return FALSE;
-            }
-            else
-            {
-                srv->unk_00 = 0;
-                return TRUE;
-            }
-            break;
+EWRAM_DATA struct mevent_srv_common * gUnknown_203F3C4 = NULL;
 
-    }
+void mevent_srv_init_common(struct mevent_srv_common *, const void *, u32, u32);
+void mevent_srv_free_resources(struct mevent_srv_common *);
+u32 sub_8145600(struct mevent_srv_common *);
 
-    return FALSE;
-}
+extern const u8 gUnknown_8468B6C[];
+extern const u8 gUnknown_8468BCC[];
 
-bool32 sub_81449E0(struct mevent_srv_sub * srv)
+void sub_8144F1C(void)
 {
-    struct send_recv_buff buff;
-
-    switch (srv->unk_00)
-    {
-        case 0:
-            if (sub_800A4BC())
-            {
-                buff.unk0 = srv->unk_0E;
-                buff.unk4 = srv->unk_14;
-                buff.unk2 = CalcCRC16WithTable(srv->unk_1C, srv->unk_14);
-                srv->unk_12 = buff.unk2;
-                srv->unk_10 = 0;
-                SendBlock(0, &buff, sizeof(buff));
-                ++srv->unk_00;
-            }
-            break;
-        case 1:
-            if (sub_800A4BC())
-            {
-                if (sub_81448D8(srv->unk_04))
-                {
-                    size_t r3;
-                    sub_81448FC(srv->unk_04);
-                    r3 = 252 * srv->unk_10;
-                    if (srv->unk_14 - r3 <= 252)
-                    {
-                        SendBlock(0, srv->unk_1C + r3, srv->unk_14 - r3);
-                        ++srv->unk_10;
-                        ++srv->unk_00;
-                    }
-                    else
-                    {
-                        SendBlock(0, srv->unk_1C + r3, 252);
-                        ++srv->unk_10;
-                    }
-                }
-            }
-            break;
-        case 2:
-            if (sub_800A4BC())
-            {
-                if (CalcCRC16WithTable(srv->unk_1C, srv->unk_14) != srv->unk_12)
-                    sub_80FA190();
-                else
-                    ++srv->unk_00;
-            }
-            break;
-        case 3:
-            if (sub_81448D8(srv->unk_04))
-            {
-                sub_81448FC(srv->unk_04);
-                srv->unk_00 = 0;
-                return TRUE;
-            }
-            break;
-    }
-
-    return FALSE;
+    gUnknown_203F3C4 = AllocZeroed(sizeof(struct mevent_srv_common));
+    mevent_srv_init_common(gUnknown_203F3C4, gUnknown_8468B6C, 0, 1);
 }
 
-void sub_8144AEC(void)
+void sub_8144F40(void)
 {
-    gUnknown_203F3C0 = AllocZeroed(sizeof(struct mevent_srv_ish));
-    mevent_srv_ish_init(gUnknown_203F3C0, 1, 0);
+    gUnknown_203F3C4 = AllocZeroed(sizeof(struct mevent_srv_common));
+    mevent_srv_init_common(gUnknown_203F3C4, gUnknown_8468BCC, 0, 1);
 }
 
-u32 sub_8144B0C(u16 * a0)
+u32 sub_8144F64(u16 * a0)
 {
     u32 result;
-    if (gUnknown_203F3C0 == NULL)
-        return 6;
-    result = mevent_srv_ish_exec(gUnknown_203F3C0);
-    if (result == 6)
+    if (gUnknown_203F3C4 == NULL)
+        return 3;
+    result = sub_8145600(gUnknown_203F3C4);
+    if (result == 3)
     {
-        *a0 = gUnknown_203F3C0->unk_04;
-        sub_8144BC0(gUnknown_203F3C0);
-        Free(gUnknown_203F3C0);
-        gUnknown_203F3C0 = NULL;
+        *a0 = gUnknown_203F3C4->unk_04;
+        mevent_srv_free_resources(gUnknown_203F3C4);
+        Free(gUnknown_203F3C4);
+        gUnknown_203F3C4 = NULL;
     }
     return result;
 }
 
-void sub_8144B48(void)
-{
-    gUnknown_203F3C0->unk_0C++;
-}
-
-void * sub_8144B58(void)
-{
-    return gUnknown_203F3C0->unk_20;
-}
-
-void sub_8144B64(u32 a0)
-{
-    gUnknown_203F3C0->unk_04 = a0;
-}
-
-void mevent_srv_ish_init(struct mevent_srv_ish * srv, u32 a1, u32 a2)
-{
-    srv->unk_00 = 0;
-    srv->unk_08 = 0;
-    srv->unk_0C = 0;
-    srv->unk_14 = AllocZeroed(0x400);
-    srv->unk_18 = AllocZeroed(0x400);
-    srv->unk_1C = AllocZeroed(0x400);
-    srv->unk_20 = AllocZeroed(0x40);
-    sub_814485C(&srv->unk_24, a1, a2);
-}
-
-void sub_8144BC0(struct mevent_srv_ish * srv)
-{
-    Free(srv->unk_14);
-    Free(srv->unk_18);
-    Free(srv->unk_1C);
-    Free(srv->unk_20);
-}
-
-void sub_8144BE4(struct mevent_srv_ish * srv)
-{
-    memcpy(srv->unk_1C, srv->unk_18, 0x400);
-    srv->unk_10 = 0;
-}
-
-void sub_8144C00(struct mevent_srv_ish * srv, u32 a1, u32 a2)
-{
-    CpuFill32(0, srv->unk_14, 0x400);
-    *(u32 *)srv->unk_14 = a2;
-    sub_8144888(&srv->unk_24, a1, srv->unk_14, 4);
-}
-
-// funcs in array gUnknown_8466F60
-
-u32 sub_8144C34(struct mevent_srv_ish * srv)
-{
-    memcpy(srv->unk_1C, gUnknown_84687E0, sizeof(gUnknown_84687E0));
-    srv->unk_10 = 0;
-    srv->unk_08 = 4;
-    srv->unk_0C = 0;
-    return 0;
-}
-
-u32 sub_8144C5C(struct mevent_srv_ish * srv)
-{
-    return 6;
-}
-
-u32 sub_8144C60(struct mevent_srv_ish * srv)
+void mevent_srv_init_common(struct mevent_srv_common * svr, const void * a1, u32 a2, u32 a3)
 {
-    if (sub_8144844(&srv->unk_24))
-    {
-        srv->unk_08 = 4;
-        srv->unk_0C = 0;
-    }
-    return 1;
-}
-
-u32 sub_8144C80(struct mevent_srv_ish * srv)
-{
-    if (sub_8144850(&srv->unk_24))
-    {
-        srv->unk_08 = 4;
-        srv->unk_0C = 0;
-    }
-    return 1;
-}
-
-u32 sub_8144CA0(struct mevent_srv_ish * srv)
-{
-    u32 * r2 = (u32 *)srv->unk_1C + 2 * srv->unk_10;
-    ++srv->unk_10;
-    switch (r2[0])
-    {
-        case 0:
-            break;
-        case 1:
-            srv->unk_04 = r2[1];
-            srv->unk_08 = 1;
-            srv->unk_0C = 0;
-            break;
-        case 2:
-            sub_81448AC(&srv->unk_24, r2[1], srv->unk_18);
-            srv->unk_08 = 2;
-            srv->unk_0C = 0;
-            break;
-        case 3:
-            srv->unk_08 = 3;
-            srv->unk_0C = 0;
-            break;
-        case 20:
-            sub_8144888(&srv->unk_24, 0x14, srv->unk_14, 0);
-            srv->unk_08 = 3;
-            srv->unk_0C = 0;
-            break;
-        case 19:
-            sub_8144C00(srv, 0x12, GetGameStat(r2[1]));
-            srv->unk_08 = 3;
-            srv->unk_0C = 0;
-            break;
-        case 6:
-            if (srv->unk_04 == 0)
-                sub_8144BE4(srv);
-            break;
-        case 7:
-            if (srv->unk_04 == 1)
-                sub_8144BE4(srv);
-            break;
-        case 4:
-            sub_8144BE4(srv);
-            break;
-        case 5:
-            memcpy(srv->unk_20, srv->unk_18, 0x40);
-            srv->unk_08 = 5;
-            srv->unk_0C = 0;
-            return 2;
-        case 11:
-            memcpy(srv->unk_20, srv->unk_18, 0x40);
-            srv->unk_08 = 5;
-            srv->unk_0C = 0;
-            return 3;
-        case 12:
-            memcpy(srv->unk_20, srv->unk_18, 0x40);
-            srv->unk_08 = 5;
-            srv->unk_0C = 0;
-            return 5;
-        case 13:
-            srv->unk_08 = 5;
-            srv->unk_0C = 0;
-            return 4;
-        case 8:
-            sub_81442CC(srv->unk_14);
-            sub_8144888(&srv->unk_24, 0x11, srv->unk_14, 0x64);
-            break;
-        case 14:
-            sub_8144C00(srv, 0x13, srv->unk_04);
-            break;
-        case 10:
-            sub_8143F68(srv->unk_18);
-            break;
-        case 9:
-            if (!sub_8143EF4(srv->unk_18))
-            {
-                sub_8143DC8(srv->unk_18);
-                sub_8144C00(srv, 0x13, 0);
-            }
-            else
-                sub_8144C00(srv, 0x13, 1);
-            break;
-        case 15:
-            srv->unk_08 = 6;
-            srv->unk_0C = 0;
-            break;
-        case 16:
-            sub_8144254(srv->unk_18);
-            break;
-        case 17:
-            sub_8069EA4(srv->unk_18, 1000);
-            break;
-        case 18:
-            memcpy(gSaveBlock2Ptr->unk_4A0, srv->unk_18, 0xbc);
-            sub_80E7490();
-            break;
-        case 21:
-            memcpy(gDecompressionBuffer, srv->unk_18, 0x400);
-            srv->unk_08 = 7;
-            srv->unk_0C = 0;
-            break;
-    }
-
-    return 1;
-}
-
-u32 sub_8144E6C(struct mevent_srv_ish * srv)
-{
-    if (srv->unk_0C)
-    {
-        srv->unk_08 = 4;
-        srv->unk_0C = 0;
-    }
-    return 1;
+    svr->unk_00 = 0;
+    svr->mainseqno = 0;
+    svr->unk_18 = AllocZeroed(332);
+    svr->unk_1C = AllocZeroed(444);
+    svr->unk_14 = AllocZeroed(ME_SEND_BUF_SIZE);
+    svr->unk_20 = AllocZeroed(100);
+    svr->unk_10 = a1;
+    svr->unk_0C = 0;
+    sub_814485C(&svr->unk_38, a2, a3);
 }
 
-u32 sub_8144E84(struct mevent_srv_ish * srv)
+void mevent_srv_free_resources(struct mevent_srv_common * svr)
 {
-    switch (srv->unk_0C)
-    {
-        case 0:
-            sub_80DA89C(srv->unk_18);
-            ++srv->unk_0C;
-            break;
-        case 1:
-            if (!sub_80DA8B0(&srv->unk_04))
-            {
-                srv->unk_08 = 4;
-                srv->unk_0C = 0;
-            }
-            break;
-    }
-    return 1;
+    Free(svr->unk_18);
+    Free(svr->unk_1C);
+    Free(svr->unk_14);
+    Free(svr->unk_20);
 }
 
-u32 sub_8144EBC(struct mevent_srv_ish * srv)
-{
-    u32 (*func)(u32 *, struct SaveBlock2 *, struct SaveBlock1 *) = (void *)gDecompressionBuffer;
-    if (func(&srv->unk_04, gSaveBlock2Ptr, gSaveBlock1Ptr) == 1)
-    {
-        srv->unk_08 = 4;
-        srv->unk_0C = 0;
-    }
-    return 1;
-}
+const char gUnknown_8466F80[] = "C:/WORK/POKeFRLG/src/pm_lgfr_ose/source/mevent_server.c";
+const char gUnknown_8466FB8[] = "size <= ME_SEND_BUF_SIZE";
+const char gUnknown_8466FD4[] = "cmd->parameter == NULL";
+const char gUnknown_8466FEC[] = "cmd->flag == FALSE";
+const char gUnknown_8467000[] = "cmd->flag == FALSE && cmd->parameter == NULL";
 
-u32 mevent_srv_ish_exec(struct mevent_srv_ish * srv)
+void sub_814501C(struct mevent_srv_common * svr, u32 a1, void * a2, u32 size)
 {
-    u32 (*funcs[])(struct mevent_srv_ish *) = {
-        sub_8144C34,
-        sub_8144C5C,
-        sub_8144C60,
-        sub_8144C80,
-        sub_8144CA0,
-        sub_8144E6C,
-        sub_8144E84,
-        sub_8144EBC
-    };
-    return funcs[srv->unk_08](srv);
+    // AGB_ASSERT_EX(size <= ME_SEND_BUF_SIZE, "C:/WORK/POKeFRLG/src/pm_lgfr_ose/source/mevent_server.c", 257);
+    size <= ME_SEND_BUF_SIZE ? NULL : AGBAssert(gUnknown_8466F80, 257, gUnknown_8466FB8, 1);
+    sub_8144888(&svr->unk_38, a1, a2, size);
 }
diff --git a/src/mevent_server_ish.c b/src/mevent_server_ish.c
new file mode 100644
index 000000000..7e9639303
--- /dev/null
+++ b/src/mevent_server_ish.c
@@ -0,0 +1,308 @@
+#include "global.h"
+#include "malloc.h"
+#include "decompress.h"
+#include "util.h"
+#include "link.h"
+#include "link_rfu.h"
+#include "overworld.h"
+#include "script.h"
+#include "battle_tower.h"
+#include "mystery_event_script.h"
+#include "mevent.h"
+#include "mevent_server.h"
+
+extern u16 gBlockRecvBuffer[][128];
+
+struct mevent_srv_ish
+{
+    u32 unk_00;
+    u32 unk_04;
+    u32 mainseqno;
+    u32 unk_0C;
+    u32 unk_10;
+    void * unk_14;
+    void * unk_18;
+    void * unk_1C;
+    void * unk_20;
+    struct mevent_srv_sub unk_24;
+};
+
+struct mevent_cmd
+{
+    u32 instr;
+    bool32 flag;
+    u32 parameter;
+};
+
+EWRAM_DATA struct mevent_srv_ish * gUnknown_203F3C0 = NULL;
+
+void mevent_srv_ish_init(struct mevent_srv_ish *, u32, u32);
+u32 mevent_srv_ish_exec(struct mevent_srv_ish *);
+void sub_8144BC0(struct mevent_srv_ish *);
+extern const u8 gUnknown_84687E0[];
+
+void sub_8144AEC(void)
+{
+    gUnknown_203F3C0 = AllocZeroed(sizeof(struct mevent_srv_ish));
+    mevent_srv_ish_init(gUnknown_203F3C0, 1, 0);
+}
+
+u32 sub_8144B0C(u16 * a0)
+{
+    u32 result;
+    if (gUnknown_203F3C0 == NULL)
+        return 6;
+    result = mevent_srv_ish_exec(gUnknown_203F3C0);
+    if (result == 6)
+    {
+        *a0 = gUnknown_203F3C0->unk_04;
+        sub_8144BC0(gUnknown_203F3C0);
+        Free(gUnknown_203F3C0);
+        gUnknown_203F3C0 = NULL;
+    }
+    return result;
+}
+
+void sub_8144B48(void)
+{
+    gUnknown_203F3C0->unk_0C++;
+}
+
+void * sub_8144B58(void)
+{
+    return gUnknown_203F3C0->unk_20;
+}
+
+void sub_8144B64(u32 a0)
+{
+    gUnknown_203F3C0->unk_04 = a0;
+}
+
+void mevent_srv_ish_init(struct mevent_srv_ish * svr, u32 a1, u32 a2)
+{
+    svr->unk_00 = 0;
+    svr->mainseqno = 0;
+    svr->unk_0C = 0;
+    svr->unk_14 = AllocZeroed(ME_SEND_BUF_SIZE);
+    svr->unk_18 = AllocZeroed(ME_SEND_BUF_SIZE);
+    svr->unk_1C = AllocZeroed(ME_SEND_BUF_SIZE);
+    svr->unk_20 = AllocZeroed(0x40);
+    sub_814485C(&svr->unk_24, a1, a2);
+}
+
+void sub_8144BC0(struct mevent_srv_ish * svr)
+{
+    Free(svr->unk_14);
+    Free(svr->unk_18);
+    Free(svr->unk_1C);
+    Free(svr->unk_20);
+}
+
+void sub_8144BE4(struct mevent_srv_ish * svr)
+{
+    memcpy(svr->unk_1C, svr->unk_18, ME_SEND_BUF_SIZE);
+    svr->unk_10 = 0;
+}
+
+void sub_8144C00(struct mevent_srv_ish * svr, u32 a1, u32 a2)
+{
+    CpuFill32(0, svr->unk_14, ME_SEND_BUF_SIZE);
+    *(u32 *)svr->unk_14 = a2;
+    sub_8144888(&svr->unk_24, a1, svr->unk_14, 4);
+}
+
+// funcs in array gUnknown_8466F60
+
+u32 sub_8144C34(struct mevent_srv_ish * svr)
+{
+    memcpy(svr->unk_1C, gUnknown_84687E0, ME_SEND_BUF_SIZE);
+    svr->unk_10 = 0;
+    svr->mainseqno = 4;
+    svr->unk_0C = 0;
+    return 0;
+}
+
+u32 sub_8144C5C(struct mevent_srv_ish * svr)
+{
+    return 6;
+}
+
+u32 sub_8144C60(struct mevent_srv_ish * svr)
+{
+    if (sub_8144844(&svr->unk_24))
+    {
+        svr->mainseqno = 4;
+        svr->unk_0C = 0;
+    }
+    return 1;
+}
+
+u32 sub_8144C80(struct mevent_srv_ish * svr)
+{
+    if (sub_8144850(&svr->unk_24))
+    {
+        svr->mainseqno = 4;
+        svr->unk_0C = 0;
+    }
+    return 1;
+}
+
+u32 sub_8144CA0(struct mevent_srv_ish * svr)
+{
+    u32 * r2 = (u32 *)svr->unk_1C + 2 * svr->unk_10;
+    ++svr->unk_10;
+    switch (r2[0])
+    {
+        case 0:
+            break;
+        case 1:
+            svr->unk_04 = r2[1];
+            svr->mainseqno = 1;
+            svr->unk_0C = 0;
+            break;
+        case 2:
+            sub_81448AC(&svr->unk_24, r2[1], svr->unk_18);
+            svr->mainseqno = 2;
+            svr->unk_0C = 0;
+            break;
+        case 3:
+            svr->mainseqno = 3;
+            svr->unk_0C = 0;
+            break;
+        case 20:
+            sub_8144888(&svr->unk_24, 0x14, svr->unk_14, 0);
+            svr->mainseqno = 3;
+            svr->unk_0C = 0;
+            break;
+        case 19:
+            sub_8144C00(svr, 0x12, GetGameStat(r2[1]));
+            svr->mainseqno = 3;
+            svr->unk_0C = 0;
+            break;
+        case 6:
+            if (svr->unk_04 == 0)
+                sub_8144BE4(svr);
+            break;
+        case 7:
+            if (svr->unk_04 == 1)
+                sub_8144BE4(svr);
+            break;
+        case 4:
+            sub_8144BE4(svr);
+            break;
+        case 5:
+            memcpy(svr->unk_20, svr->unk_18, 0x40);
+            svr->mainseqno = 5;
+            svr->unk_0C = 0;
+            return 2;
+        case 11:
+            memcpy(svr->unk_20, svr->unk_18, 0x40);
+            svr->mainseqno = 5;
+            svr->unk_0C = 0;
+            return 3;
+        case 12:
+            memcpy(svr->unk_20, svr->unk_18, 0x40);
+            svr->mainseqno = 5;
+            svr->unk_0C = 0;
+            return 5;
+        case 13:
+            svr->mainseqno = 5;
+            svr->unk_0C = 0;
+            return 4;
+        case 8:
+            sub_81442CC(svr->unk_14);
+            sub_8144888(&svr->unk_24, 0x11, svr->unk_14, 0x64);
+            break;
+        case 14:
+            sub_8144C00(svr, 0x13, svr->unk_04);
+            break;
+        case 10:
+            sub_8143F68(svr->unk_18);
+            break;
+        case 9:
+            if (!sub_8143EF4(svr->unk_18))
+            {
+                sub_8143DC8(svr->unk_18);
+                sub_8144C00(svr, 0x13, 0);
+            }
+            else
+                sub_8144C00(svr, 0x13, 1);
+            break;
+        case 15:
+            svr->mainseqno = 6;
+            svr->unk_0C = 0;
+            break;
+        case 16:
+            sub_8144254(svr->unk_18);
+            break;
+        case 17:
+            sub_8069EA4(svr->unk_18, 1000);
+            break;
+        case 18:
+            memcpy(gSaveBlock2Ptr->unk_4A0, svr->unk_18, 0xbc);
+            sub_80E7490();
+            break;
+        case 21:
+            memcpy(gDecompressionBuffer, svr->unk_18, ME_SEND_BUF_SIZE);
+            svr->mainseqno = 7;
+            svr->unk_0C = 0;
+            break;
+    }
+
+    return 1;
+}
+
+u32 sub_8144E6C(struct mevent_srv_ish * svr)
+{
+    if (svr->unk_0C)
+    {
+        svr->mainseqno = 4;
+        svr->unk_0C = 0;
+    }
+    return 1;
+}
+
+u32 sub_8144E84(struct mevent_srv_ish * svr)
+{
+    switch (svr->unk_0C)
+    {
+        case 0:
+            sub_80DA89C(svr->unk_18);
+            ++svr->unk_0C;
+            break;
+        case 1:
+            if (!sub_80DA8B0(&svr->unk_04))
+            {
+                svr->mainseqno = 4;
+                svr->unk_0C = 0;
+            }
+            break;
+    }
+    return 1;
+}
+
+u32 sub_8144EBC(struct mevent_srv_ish * svr)
+{
+    u32 (*func)(u32 *, struct SaveBlock2 *, struct SaveBlock1 *) = (void *)gDecompressionBuffer;
+    if (func(&svr->unk_04, gSaveBlock2Ptr, gSaveBlock1Ptr) == 1)
+    {
+        svr->mainseqno = 4;
+        svr->unk_0C = 0;
+    }
+    return 1;
+}
+
+u32 mevent_srv_ish_exec(struct mevent_srv_ish * svr)
+{
+    u32 (*funcs[])(struct mevent_srv_ish *) = {
+        sub_8144C34,
+            sub_8144C5C,
+            sub_8144C60,
+            sub_8144C80,
+            sub_8144CA0,
+            sub_8144E6C,
+            sub_8144E84,
+            sub_8144EBC
+    };
+    return funcs[svr->mainseqno](svr);
+}
diff --git a/src/mevent_server_sub.c b/src/mevent_server_sub.c
new file mode 100644
index 000000000..83b8f62ca
--- /dev/null
+++ b/src/mevent_server_sub.c
@@ -0,0 +1,211 @@
+#include "global.h"
+#include "malloc.h"
+#include "decompress.h"
+#include "util.h"
+#include "link.h"
+#include "link_rfu.h"
+#include "overworld.h"
+#include "script.h"
+#include "battle_tower.h"
+#include "mystery_event_script.h"
+#include "mevent.h"
+#include "mevent_server.h"
+
+u32 sub_814490C(struct mevent_srv_sub *);
+u32 sub_81449E0(struct mevent_srv_sub *);
+
+u32 sub_8144844(struct mevent_srv_sub * svr)
+{
+    return svr->unk_20(svr);
+}
+
+u32 sub_8144850(struct mevent_srv_sub * svr)
+{
+    return svr->unk_24(svr);
+}
+
+void sub_814485C(struct mevent_srv_sub * svr, u32 a1, u32 a2)
+{
+    svr->unk_04 = a1;
+    svr->unk_05 = a2;
+    svr->unk_00 = 0;
+    svr->unk_12 = 0;
+    svr->unk_14 = 0;
+    svr->unk_10 = 0;
+    svr->unk_0A = 0;
+    svr->unk_0C = 0;
+    svr->unk_08 = 0;
+    svr->unk_1C = NULL;
+    svr->unk_18 = NULL;
+    svr->unk_24 = sub_81449E0;
+    svr->unk_20 = sub_814490C;
+}
+
+void sub_8144888(struct mevent_srv_sub * svr, u32 a1, void * a2, u32 a3)
+{
+    svr->unk_00 = 0;
+    svr->unk_0E = a1;
+    svr->unk_10 = 0;
+    svr->unk_12 = 0;
+    if (a3 != 0)
+        svr->unk_14 = a3;
+    else
+        svr->unk_14 = ME_SEND_BUF_SIZE;
+    svr->unk_1C = a2;
+}
+
+void sub_81448AC(struct mevent_srv_sub * svr, u32 a1, void * a2)
+{
+    svr->unk_00 = 0;
+    svr->unk_06 = a1;
+    svr->unk_08 = 0;
+    svr->unk_0A = 0;
+    svr->unk_0C = 0;
+    svr->unk_18 = a2;
+}
+
+void sub_81448BC(u32 recv_idx, void * dest, size_t size)
+{
+    memcpy(dest, gBlockRecvBuffer[recv_idx], size);
+}
+
+bool32 sub_81448D8(u32 recv_idx)
+{
+    if ((GetBlockReceivedStatus() >> recv_idx) & 1)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+void sub_81448FC(u32 recv_idx)
+{
+    ResetBlockReceivedFlag(recv_idx);
+}
+
+bool32 sub_814490C(struct mevent_srv_sub * svr)
+{
+    struct send_recv_buff buff;
+
+    switch (svr->unk_00)
+    {
+        case 0:
+            if (sub_81448D8(svr->unk_05))
+            {
+                sub_81448BC(svr->unk_05, &buff, sizeof(buff));
+                svr->unk_0C = buff.unk4;
+                svr->unk_0A = buff.unk2;
+                if (svr->unk_0C > ME_SEND_BUF_SIZE)
+                {
+                    sub_80FA190();
+                    return FALSE;
+                }
+                else if (svr->unk_06 != buff.unk0)
+                {
+                    sub_80FA190();
+                    return FALSE;
+                }
+                else
+                {
+                    svr->unk_08 = 0;
+                    sub_81448FC(svr->unk_05);
+                    ++svr->unk_00;
+                }
+            }
+            break;
+        case 1:
+            if (sub_81448D8(svr->unk_05))
+            {
+                size_t r3 = svr->unk_08 * 252;
+                if (svr->unk_0C - r3 <= 252)
+                {
+                    sub_81448BC(svr->unk_05, svr->unk_18 + r3, svr->unk_0C - r3);
+                    ++svr->unk_08;
+                    ++svr->unk_00;
+                }
+                else
+                {
+                    sub_81448BC(svr->unk_05, svr->unk_18 + r3, 252);
+                    ++svr->unk_08;
+                }
+                sub_81448FC(svr->unk_05);
+            }
+            break;
+        case 2:
+            if (CalcCRC16WithTable(svr->unk_18, svr->unk_0C) != svr->unk_0A)
+            {
+                sub_80FA190();
+                return FALSE;
+            }
+            else
+            {
+                svr->unk_00 = 0;
+                return TRUE;
+            }
+            break;
+
+    }
+
+    return FALSE;
+}
+
+bool32 sub_81449E0(struct mevent_srv_sub * svr)
+{
+    struct send_recv_buff buff;
+
+    switch (svr->unk_00)
+    {
+        case 0:
+            if (sub_800A4BC())
+            {
+                buff.unk0 = svr->unk_0E;
+                buff.unk4 = svr->unk_14;
+                buff.unk2 = CalcCRC16WithTable(svr->unk_1C, svr->unk_14);
+                svr->unk_12 = buff.unk2;
+                svr->unk_10 = 0;
+                SendBlock(0, &buff, sizeof(buff));
+                ++svr->unk_00;
+            }
+            break;
+        case 1:
+            if (sub_800A4BC())
+            {
+                if (sub_81448D8(svr->unk_04))
+                {
+                    size_t r3;
+                    sub_81448FC(svr->unk_04);
+                    r3 = 252 * svr->unk_10;
+                    if (svr->unk_14 - r3 <= 252)
+                    {
+                        SendBlock(0, svr->unk_1C + r3, svr->unk_14 - r3);
+                        ++svr->unk_10;
+                        ++svr->unk_00;
+                    }
+                    else
+                    {
+                        SendBlock(0, svr->unk_1C + r3, 252);
+                        ++svr->unk_10;
+                    }
+                }
+            }
+            break;
+        case 2:
+            if (sub_800A4BC())
+            {
+                if (CalcCRC16WithTable(svr->unk_1C, svr->unk_14) != svr->unk_12)
+                    sub_80FA190();
+                else
+                    ++svr->unk_00;
+            }
+            break;
+        case 3:
+            if (sub_81448D8(svr->unk_04))
+            {
+                sub_81448FC(svr->unk_04);
+                svr->unk_00 = 0;
+                return TRUE;
+            }
+            break;
+    }
+
+    return FALSE;
+}