1 files changed, 208 insertions, 0 deletions
diff --git a/src/mail_data.c b/src/mail_data.c
new file mode 100644
index 000000000..4249b9f48
--- /dev/null
+++ b/src/mail_data.c
@@ -0,0 +1,208 @@
+#include "global.h"
+#include "mail_data.h"
+#include "constants/items.h"
+#include "name_string_util.h"
+#include "pokemon.h"
+#include "pokemon_icon.h"
+#include "constants/species.h"
+#include "text.h"
+
+void ClearMailData(void)
+{
+    u8 i;
+
+    for (i = 0; i < 16; i++)
+        ClearMailStruct(&gSaveBlock1.mail[i]);
+}
+
+void ClearMailStruct(struct MailStruct *mail)
+{
+    int i;
+
+    for (i = 0; i < 9; i++)
+        mail->words[i] = -1;
+
+    for (i = 0; i < 8; i++)
+        mail->playerName[i] = -1;
+
+    for (i = 0; i < 4; i++)
+        mail->trainerId[i] = 0;
+
+    mail->species = 1;
+    mail->itemId = 0;
+}
+
+bool8 MonHasMail(struct Pokemon *mon)
+{
+    u16 heldItem = GetMonData(mon, MON_DATA_HELD_ITEM);
+    if (ItemIsMail(heldItem) && GetMonData(mon, MON_DATA_MAIL) != 0xFF)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+u8 GiveMailToMon(struct Pokemon *mon, u16 itemId)
+{
+    u16 _itemId;
+    u8 heldItem[2];
+    u8 id;
+    u8 i;
+    u16 species;
+    u32 personality;
+
+    _itemId = itemId;
+    heldItem[0] = _itemId;
+    heldItem[1] = _itemId >> 8;
+    id = 0;
+
+    while (id < 6)
+    {
+        if (gSaveBlock1.mail[id].itemId == 0)
+        {
+            for (i = 0; i < 9; i++)
+                gSaveBlock1.mail[id].words[i] = -1;
+
+            for (i = 0; i < 7; i++)
+                gSaveBlock1.mail[id].playerName[i] = gSaveBlock2.playerName[i];
+            gSaveBlock1.mail[id].playerName[i] = EOS;
+            PadNameString(gSaveBlock1.mail[id].playerName, 0);
+
+            for (i = 0; i < 4; i++)
+                gSaveBlock1.mail[id].trainerId[i] = gSaveBlock2.playerTrainerId[i];
+
+            species = GetBoxMonData(&mon->box, MON_DATA_SPECIES);
+            personality = GetBoxMonData(&mon->box, MON_DATA_PERSONALITY);
+            gSaveBlock1.mail[id].species = SpeciesToMailSpecies(species, personality);
+            gSaveBlock1.mail[id].itemId = _itemId;
+            SetMonData(mon, MON_DATA_MAIL, &id);
+            SetMonData(mon, MON_DATA_HELD_ITEM, heldItem);
+            return id;
+        }
+        id++;
+    }
+
+    return -1;
+}
+
+u16 SpeciesToMailSpecies(u16 species, u32 personality)
+{
+    if (species == SPECIES_UNOWN)
+    {
+        int mailSpecies = GetUnownLetterByPersonality(personality) + 30000;
+        return mailSpecies;
+    }
+
+    return species;
+}
+
+u16 MailSpeciesToSpecies(u16 a1, u16 *a2)
+{
+    u16 result;
+
+    if (a1 >= 30000 && a1 < (30000 + UNOWN_FORM_COUNT))
+    {
+        result = SPECIES_UNOWN;
+        *a2 = a1 - 30000;
+    }
+    else
+    {
+        result = a1;
+    }
+
+    return result;
+}
+
+u8 GiveMailToMon2(struct Pokemon *mon, struct MailStruct *mail)
+{
+    u8 heldItem[2];
+    u16 itemId = mail->itemId;
+    u8 mailId = GiveMailToMon(mon, itemId);
+
+    if (mailId == 0xFF)
+        return 0xFF;
+
+    gSaveBlock1.mail[mailId] = *mail;
+
+    SetMonData(mon, MON_DATA_MAIL, &mailId);
+
+    heldItem[0] = itemId;
+    heldItem[1] = itemId >> 8;
+
+    SetMonData(mon, MON_DATA_HELD_ITEM, heldItem);
+
+    return mailId;
+}
+
+int unref_sub_80A2DF4(void)
+{
+    return 0;
+}
+
+void TakeMailFromMon(struct Pokemon *mon)
+{
+    u8 heldItem[2];
+    u8 mailId;
+
+    if (MonHasMail(mon))
+    {
+        mailId = GetMonData(mon, MON_DATA_MAIL);
+        gSaveBlock1.mail[mailId].itemId = 0;
+        mailId = 0xFF;
+        heldItem[0] = 0;
+        heldItem[1] = 0;
+        SetMonData(mon, MON_DATA_MAIL, &mailId);
+        SetMonData(mon, MON_DATA_HELD_ITEM, heldItem);
+    }
+}
+
+void DeleteMail(u8 mailId)
+{
+    gSaveBlock1.mail[mailId].itemId = 0;
+}
+
+u8 TakeMailFromMon2(struct Pokemon *mon)
+{
+    u8 i;
+    u8 newHeldItem[2];
+    u8 newMailId;
+
+    newHeldItem[0] = 0;
+    newHeldItem[1] = 0;
+    newMailId = 0xFF;
+
+    for (i = 6; i < 16; i++)
+    {
+        if (gSaveBlock1.mail[i].itemId == 0)
+        {
+            memcpy(&gSaveBlock1.mail[i], &gSaveBlock1.mail[GetMonData(mon, MON_DATA_MAIL)], sizeof(struct MailStruct));
+            gSaveBlock1.mail[GetMonData(mon, MON_DATA_MAIL)].itemId = 0;
+            SetMonData(mon, MON_DATA_MAIL, &newMailId);
+            SetMonData(mon, MON_DATA_HELD_ITEM, newHeldItem);
+            return i;
+        }
+    }
+
+    return 0xFF;
+}
+
+bool8 ItemIsMail(u16 itemId)
+{
+    switch (itemId)
+    {
+    case ITEM_ORANGE_MAIL:
+    case ITEM_HARBOR_MAIL:
+    case ITEM_GLITTER_MAIL:
+    case ITEM_MECH_MAIL:
+    case ITEM_WOOD_MAIL:
+    case ITEM_WAVE_MAIL:
+    case ITEM_BEAD_MAIL:
+    case ITEM_SHADOW_MAIL:
+    case ITEM_TROPIC_MAIL:
+    case ITEM_DREAM_MAIL:
+    case ITEM_FAB_MAIL:
+    case ITEM_RETRO_MAIL:
+        return TRUE;
+    default:
+        return FALSE;
+    }
+}