Shiny Random Egg

Random Shiny Egg Code

This code gives a random shiny egg from a list if there is space in your party

This is an alternative interpretation of Daily Random Egg

---

include/pokemon.h

Add at end of file, before #endif

bool8 CreateShinyEggFromList(void);

---

src/pokemon.c

contants/daycare.h links to the "EGG_HATCH_LEVEL" define
`new_game.h" links to the "GetTrainerId" code

Add to top of the file after the #include lines

#include "constants/daycare.h"
#include "new_game.h"

Add to the bottom of the file.

#include "constants/daycare.h"

static const u16 sShinyEggSpeciesList[] =
{
    SPECIES_BULBASAUR,
    SPECIES_CHARMANDER,
    SPECIES_SQUIRTLE,
    SPECIES_CHIKORITA,
    SPECIES_CYNDAQUIL,
    SPECIES_TOTODILE,
    SPECIES_TREEKO,
    SPECIES_TORCHIC,
    SPECIES_MUDKIP,
};

static bool8 IsPersonalityShiny(u32 personality, u32 otId)
{
    u16 trainerId = otId;
    u16 secretId = otId >> 16;
    u16 personalityHi = personality >> 16;
    u16 personalityLo = personality;

    return ((trainerId ^ secretId ^ personalityHi ^ personalityLo) < 8);
}

static u32 GenerateShinyPersonality(u32 otId)
{
    u32 personality;

    while (TRUE)
    {
        personality = ((u32)Random() << 16) | Random();

        if (IsPersonalityShiny(personality, otId))
            return personality;
    }
}

bool8 CreateShinyEggFromList(void)
{
    struct Pokemon *mon;
    u16 species;
    u32 personality;
    u32 otId;
    u8 egg = TRUE;
    u8 friendship = 1;
    u32 speciesCount;

    if (gPlayerPartyCount >= PARTY_SIZE)
        return FALSE;

    speciesCount = ARRAY_COUNT(sShinyEggSpeciesList);

    species = sShinyEggSpeciesList[Random() % speciesCount];

    otId = GetTrainerId(gSaveBlock2Ptr->playerTrainerId);

    personality = GenerateShinyPersonality(otId);

    mon = &gPlayerParty[gPlayerPartyCount];

    CreateMon(mon,
              species,
              EGG_HATCH_LEVEL,
              USE_RANDOM_IVS,
              TRUE,
              personality,
              OT_ID_PLAYER_ID,
              0);

    SetMonData(mon, MON_DATA_IS_EGG, &egg);

    SetMonData(mon, MON_DATA_FRIENDSHIP, &friendship);

    gPlayerPartyCount++;

    CalculatePlayerPartyCount();

    return TRUE;
}

---

include/constants/flags.h

rename an unused flag (0x4F in this example)

#define FLAG_RECEIVED_SHINY_RANDOM_EGG 0x4F

if you want to give the shiny egg daily, chose a daily flag instead

---

src/event_specials.c

Add at end of file

bool8 CreateShinyEggFromList(void);

void GiveRandomShinyEgg(void)
{
    if (CreateShinyEggFromList())
        gSpecialVar_Result = TRUE;
    else
        gSpecialVar_Result = FALSE;
}

---

data/specials.inc

Add at end of file

	def_special GiveRandomShinyEgg
	

---

data/maps/[MAP_NAME]/scripts.inc

add into your chosen map script (or where you store your custom scripts)

ShinyRandomEgg_EventScript_ShinyEggNPC::
    lock
    faceplayer
	goto_if_set FLAG_RECEIVED_SHINY_RANDOM_EGG, ShinyRandomEgg_EventScript_AlreadyReceived
    msgbox ShinyRandomEgg_Text_ShinyEggIntro, MSGBOX_DEFAULT
    waitmessage
    waitbuttonpress
    special GiveRandomShinyEgg
    compare VAR_RESULT, TRUE
    goto_if_eq ShinyRandomEgg_EventScript_ReceiveShinyEgg
    message ShinyRandomEgg_Text_NoRoomForEgg
    waitmessage
    waitbuttonpress
    release
    end

ShinyRandomEgg_EventScript_ReceiveShinyEgg:
	setflag FLAG_RECEIVED_SHINY_RANDOM_EGG
    playfanfare MUS_OBTAIN_ITEM
    msgbox ShinyRandomEgg_Text_ReceivedShinyEgg, MSGBOX_DEFAULT
    waitmessage
    waitfanfare
    waitbuttonpress
    release
    end

ShinyRandomEgg_EventScript_AlreadyReceived:
	msgbox ShinyRandomEgg_Text_AlreadyReceived, MSGBOX_DEFAULT
	release
	end

ShinyRandomEgg_Text_ShinyEggIntro:
    .string "I have a Pokémon Egg for you!\p"
    .string "Take good care of it.$"

ShinyRandomEgg_Text_ReceivedShinyEgg:
    .string "You received a mysterious Egg!$"

ShinyRandomEgg_Text_NoRoomForEgg:
    .string "Your party is full.$"

ShinyRandomEgg_Text_AlreadyReceived:
	.string "I already gave you an Egg.$"

---

porymap

add an overworld NPC, set the script as ShinyRandomEgg_EventScript_ShinyEggNPC

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end of guide