#include "global.h"
#include "data2.h"
#include "decompress.h"
#include "event_data.h"
#include "hall_of_fame.h"
#include "intro_credits_graphics.h"
#include "m4a.h"
#include "main.h"
#include "menu.h"
#include "palette.h"
#include "pokedex.h"
#include "rng.h"
#include "songs.h"
#include "sound.h"
#include "species.h"
#include "starter_choose.h"
#include "task.h"
#include "trig.h"

asm(".set REG_BASE, 0x4000000");
asm(".set OFFSET_REG_BLDCNT,      0x50");
asm(".set OFFSET_REG_BLDALPHA,    0x52");
asm(".set REG_BLDCNT,      REG_BASE + OFFSET_REG_BLDCNT");
asm(".set REG_BLDALPHA,    REG_BASE + OFFSET_REG_BLDALPHA");

enum
{
    PAGE_TITLE,
    PAGE_DIRECTOR,
    PAGE_ART_DIRECTOR,
    PAGE_BATTLE_DIRECTOR,
    PAGE_MAIN_PROGRAMMER,
    PAGE_BATTLE_SYSTEM_PROGRAMMER,
    PAGE_PROGRAMMERS_1,
    PAGE_PROGRAMMERS_2,
    PAGE_PROGRAMMERS_3,
    PAGE_MAIN_GRAHPICS_DESIGNER,
    PAGE_POKEMON_GRAHPIC_DESIGNERS_1,
    PAGE_POKEMON_GRAHPIC_DESIGNERS_2,
    PAGE_POKEMON_GRAHPIC_DESIGNERS_3,
    PAGE_POKEMON_DESIGNERS_1,
    PAGE_POKEMON_DESIGNERS_2,
    PAGE_MUSIC_COMPOSITION,
    PAGE_SOUND_EFFECTS,
    PAGE_GAME_DESIGNERS_1,
    PAGE_GAME_DESIGNERS_2,
    PAGE_GAME_DESIGNERS_3,
    PAGE_PLOT_SCENARIO,
    PAGE_GAME_SCENARIO,
    PAGE_SCRIPT_DESIGNERS,
    PAGE_MAP_DESIGNERS,
    PAGE_MAP_DATA_DESIGNERS,
    PAGE_PARAMETRIC_DESIGNERS,
    PAGE_POKEDEX_TEXT,
    PAGE_ENVIRONMENT_TOOLS,
    PAGE_PRODUCT_TESTING,
    PAGE_SPECIAL_THANKS,
    PAGE_SPECIAL_THANKS_1,
    PAGE_SPECIAL_THANKS_2,
    PAGE_SPECIAL_THANKS_3,
    PAGE_INFORMATION_SUPERVISORS,
    PAGE_COORDINATORS,
    PAGE_TASK_MANAGERS,
    PAGE_PRODUCERS,
    PAGE_EXECUTIVE_DIRECTOR,
    PAGE_EXECUTIVE_PRODUCERS_1,
    PAGE_EXECUTIVE_PRODUCERS_2,
    PAGE_TRANSLATION_COORDINATOR,
    PAGE_TRANSLATORS,
    PAGE_PROGRAMMERS,
    PAGE_GRAPHIC_DESIGNERS,
    PAGE_PRODUCT_SUPPORT,

#if ENGLISH
    PAGE_ARTWORK,
    PAGE_TEXT_EDITOR,
    PAGE_NOA_TESTING,
    PAGE_BRAILLE_CODE_CHECK_1,
    PAGE_BRAILLE_CODE_CHECK_2,
#elif GERMAN
    PAGE_NOE_TESTING,
    PAGE_BRAILLE_CODE_CHECK_1,
#endif

    PAGE_SPECIAL_THANKS_4,
    PAGE_SPECIAL_THANKS_5,

    PAGE_COUNT
};

#if ENGLISH
#define POKEMON_TILE_COUNT 68
#define LAST_PAGE (PAGE_TEXT_EDITOR)
#define UNK_DEFINE_45 (0x45)
#define UNK_DEFINE_82 (0x82)
#define UNK_DEF_1F3 (499)
#elif GERMAN
#define POKEMON_TILE_COUNT 65
#define LAST_PAGE (PAGE_NOE_TESTING)
#define UNK_DEFINE_45 (8)
#define UNK_DEFINE_82 (0x8D)
#define UNK_DEF_1F3 (554)
#endif

#define COLOR_DARK_GREEN 0x1967
#define COLOR_LIGHT_GREEN 0x328D

enum
{
    TDA_0 = 0,
    TDA_TASK_C_ID = 1,
    TDA_TASK_E_ID = 2,
    TDA_TASK_D_ID = 3,
    TDA_4 = 4,
    TDA_PLAYER_CYCLIST = 5,
    TDA_RIVAL_CYCLIST = 6,
    TDA_7 = 7, // Has something to do with the bike scene
    TDA_11 = 11, // Gets set depending on whether the bike or the grass scene should be shown
    TDA_12 = 12,
    TDA_13 = 13,
    TDA_14 = 14,
    TDA_TASK_B_ID = 15,

    // Appears to be responsible for text
    TDB_0 = 0,
    TDB_TASK_A_ID = 1,
    TDB_CURRENT_PAGE = 2,
    TDB_3 = 3,

    TDC_0 = 0,
    TDC_1 = 1,
    TDC_2 = 2,
    TDC_3 = 3,
    TDC_4 = 4,
    TDC_5 = 5,

    TDD_STATE = 0,
    TDD_TASK_A_ID = 1,
    TDD_2 = 2,
    TDD_3 = 3,

    TDE_0 = 0,
    TDE_1 = 1,
    TDE_TASK_A_ID = 2,
};


struct Unk201C000
{
    u16 unk0[POKEMON_TILE_COUNT];
    u16 unk88;
    u16 unk8A;
    u16 unk8C;
    u16 unk8E;
    u16 unk90[386];
    u16 unk394;
};

struct CreditsEntry
{
    u8 var_0;
    u8 *text;
};

extern u8 ewram[];

#define EWRAM_1F800          ((u16 *)(ewram + 0x1F800))
#define HALL_OF_FAME_SHEET_0 ((u8 *)(ewram + 0x1E000))
#define HALL_OF_FAME_SHEET_1 ((u8 *)(ewram + 0x1E800))
#define HALL_OF_FAME_SHEET_2 ((u8 *)(ewram + 0x1F000))
#define ewram1c000           (*(struct Unk201C000 *)(ewram + 0x1C000))

extern struct HallOfFame gHallOfFame;
extern u8 unk_201e800[0x800];
extern u8 unk_201f000[0x800];
extern u16 unk_201f800[];

extern struct SpriteTemplate gUnknown_02024E8C;

extern u16 gUnknown_02039358;
extern s16 gUnknown_0203935A;
extern s16 gUnknown_0203935C;

static EWRAM_DATA s16 gUnknown_02039320 = 0;
static EWRAM_DATA u16 gUnknown_02039322 = 0; // TASK A
EWRAM_DATA u8 gUnknown_02039324 = 0;
static EWRAM_DATA u8 gUnknown_02039325 = 0;

extern u8 gReservedSpritePaletteCount;

// data/hall_of_fame
extern void *gUnknown_0840B5A0[];

// data/credits
const u16 gUnknown_0840B7BC[] = INCBIN_U16("graphics/credits/palette_1.gbapal");
const u8 gUnknown_0840B7FC[] = INCBIN_U8("graphics/credits/ampersand.4bpp");
extern u8 gUnknown_0840B83C[];
extern u8 gUnknown_0840B84B[];
extern u8 gUnknown_0840B85A[];
extern u8 gUnknown_0840B869[];
extern u8 gUnknown_0840B878[];
extern struct CreditsEntry *gCreditsEntryPointerTable[][5];
extern u8 gUnknown_0840CA00[][2];
extern struct SpriteSheet gUnknown_0840CAA0;
extern struct SpritePalette gUnknown_0840CAB0;
extern const union AnimCmd *const gSpriteAnimTable_0840CA54[];
extern const union AnimCmd *const gSpriteAnimTable_0840CA94[];
extern struct SpriteTemplate gSpriteTemplate_840CAEC;

// graphics
extern u8 gCreditsCopyrightEnd_Gfx[];
extern u16 gIntroCopyright_Pal[16];

static void task_a_8143B38(u8 taskIdA);
static void task_a_8143B68(u8 taskIdA);
static void task_a_8143BFC(u8 taskIdA);
static void task_a_80C9BFC(u8 taskIdA);
static void task_a_8143CC0(u8 taskIdA);
static void task_a_8143D04(u8 taskIdA);
static void task_a_8143EBC(u8 taskIdA);
static void task_a_8143F04(u8 taskIdA);
static void task_a_8143F3C(u8 taskIdA);
static void task_a_8143FDC(u8 taskIdA);
static void task_a_8144024(u8 taskIdA);
static void task_a_8144080(u8 taskIdA);
static void task_a_8144114(u8 taskIdA);
static void sub_8144130(void);
static void task_b_81441B8(u8 taskIdB);
static u8 sub_8144454(u8 page, u8 taskIdA);
static void task_d_8144514(u8 taskIdD);
static bool8 sub_8144ECC(u8 data, u8 taskIdA);
static void sub_81450AC(u8 taskIdA);
static void sub_8145128(u16, u16, u16);
static void sub_81452D0(u16 arg0, u16 palette);
static void spritecb_player_8145378(struct Sprite *sprite);
static void spritecb_rival_8145420(struct Sprite *sprite);
static u8 sub_81456B4(u16 species, u16 x, u16 y, u16 position);
static void sub_81458DC(void);

static void vblank_8143948(void)
{
    LoadOam();
    ProcessSpriteCopyRequests();
    TransferPlttBuffer();
}

static void sub_814395C(void)
{
    RunTasks();
    AnimateSprites();
    BuildOamBuffer();
    UpdatePaletteFade();

    if ((gMain.heldKeys & B_BUTTON)
     && gUnknown_02039324 != 0
     && gTasks[gUnknown_02039322].func == task_a_8143B68)
    {
        vblank_8143948();
        RunTasks();
        AnimateSprites();
        BuildOamBuffer();
        UpdatePaletteFade();
        gUnknown_02039325 = 1;
    }
}

void sub_81439D0(void)
{
    u8 taskIdA;
    s16 taskIdC;
    u8 taskIdB;
    u16 savedIme;
    struct Unk201C000 *c000;

    sub_8144130();
    SetVBlankCallback(NULL);
    ResetPaletteFade();
    ResetTasks();

    taskIdA = CreateTask(task_a_8143B38, 0);

    gTasks[taskIdA].data[TDA_4] = 0;
    gTasks[taskIdA].data[TDA_7] = 0;
    gTasks[taskIdA].data[TDA_11] = 0;
    gTasks[taskIdA].data[TDA_13] = 1;

    while (TRUE)
    {
        if (sub_8144ECC(0, taskIdA))
            break;
    }

    taskIdC = gTasks[taskIdA].data[TDA_TASK_C_ID];
    gTasks[taskIdC].data[TDC_0] = 40;

    SetUpWindowConfig(&gWindowConfig_81E7208);
    InitMenuWindow(&gWindowConfig_81E7208);
    LoadPalette(&gUnknown_0840B7BC, 0x80, sizeof(gUnknown_0840B7BC));

    CpuCopy16(&gUnknown_0840B7FC, (void *)(VRAM + 0xBEE0), sizeof(gUnknown_0840B7FC));

    REG_BG0VOFS = 0xFFFC;

    taskIdB = CreateTask(task_b_81441B8, 0);

    gTasks[taskIdB].data[TDB_TASK_A_ID] = taskIdA;
    gTasks[taskIdA].data[TDA_TASK_B_ID] = taskIdB;

    BeginNormalPaletteFade(-1, 0, 16, 0, 0);

    savedIme = REG_IME;
    REG_IME = 0;
    REG_IE |= INTR_FLAG_VBLANK;
    REG_IME = savedIme;
    REG_DISPSTAT |= DISPSTAT_VBLANK_INTR;


    SetVBlankCallback(vblank_8143948);
    m4aSongNumStart(BGM_THANKFOR);
    SetMainCallback2(sub_814395C);
    gUnknown_02039325 = 0;

    c000 = &ewram1c000;

    sub_81458DC();

    c000->unk88 = 0;
    c000->unk8A = 0;
    c000->unk8C = 0;

    gUnknown_02039322 = taskIdA;
}

static void task_a_8143B38(u8 taskIdA)
{
    if (!gPaletteFade.active)
        gTasks[taskIdA].func = task_a_8143B68;
}

static void task_a_8143B68(u8 taskIdA)
{
    u16 data11;

    if (gTasks[taskIdA].data[TDA_4])
    {
        s16 taskIdC;

        taskIdC = gTasks[taskIdA].data[TDA_TASK_C_ID];
        gTasks[taskIdC].data[TDC_0] = 30;

        gTasks[taskIdA].data[TDA_12] = 0x100;
        gTasks[taskIdA].func = task_a_8143EBC;
        return;
    }

    gUnknown_02039320 = 0;
    data11 = gTasks[taskIdA].data[TDA_11];

    if (gTasks[taskIdA].data[TDA_11] == 1)
    {
        gTasks[taskIdA].data[TDA_13] = data11;
        gTasks[taskIdA].data[TDA_11] = 0;
        BeginNormalPaletteFade(-1, 0, 0, 16, 0);
        gTasks[taskIdA].func = task_a_8143BFC;
    }
    else if (gTasks[taskIdA].data[TDA_11] == 2)
    {
        gTasks[taskIdA].data[TDA_13] = data11;
        gTasks[taskIdA].data[TDA_11] = 0;
        BeginNormalPaletteFade(-1, 0, 0, 16, 0);
        gTasks[taskIdA].func = task_a_8143CC0;
    }
}

static void task_a_8143BFC(u8 taskIdA)
{
    if (!gPaletteFade.active)
    {
        REG_DISPCNT = 0;
        sub_81450AC(taskIdA);
        gTasks[taskIdA].func = task_a_80C9BFC;
    }
}

static void task_a_80C9BFC(u8 taskIdA)
{
    u16 backup;

    SetVBlankCallback(NULL);

    if (sub_8144ECC(gTasks[taskIdA].data[TDA_7], taskIdA))
    {
        BeginNormalPaletteFade(-1, 0, 16, 0, 0);

        backup = REG_IME;
        REG_IME = 0;
        REG_IE |= INTR_FLAG_VBLANK;
        REG_IME = backup;
        REG_DISPSTAT |= DISPSTAT_VBLANK_INTR;

        SetVBlankCallback(vblank_8143948);
        gTasks[taskIdA].func = task_a_8143B38;
    }
}

static void task_a_8143CC0(u8 taskIdA)
{
    if (!gPaletteFade.active)
    {
        REG_DISPCNT = 0;
        sub_81450AC(taskIdA);
        gTasks[taskIdA].func = task_a_8143D04;
    }
}

void task_a_8143D04(u8 taskIdA)
{
    switch (gMain.state)
    {
    default:
    case 0:
    {
        u16 i;

        ResetSpriteData();
        FreeAllSpritePalettes();
        gReservedSpritePaletteCount = 8;
        LZ77UnCompVram(&gBirchHelpGfx, (void *)VRAM);
        LZ77UnCompVram(&gBirchGrassTilemap, (void *)(VRAM + 0x3800));
        LoadPalette(gBirchBagGrassPal[0] + 1, 1, 31 * 2);

        for (i = 0; i < 0x800; i++)
            HALL_OF_FAME_SHEET_0[i] = 0x11;
        for (i = 0; i < 0x800; i++)
            HALL_OF_FAME_SHEET_1[i] = 0x22;
        for (i = 0; i < 0x800; i++)
            HALL_OF_FAME_SHEET_2[i] = 0x33;

        EWRAM_1F800[0] = 0;
        EWRAM_1F800[1] = 0x53FF; // light yellow
        EWRAM_1F800[2] = 0x529F; // light red
        EWRAM_1F800[3] = 0x7E94; // light blue

        LoadSpriteSheet(&gUnknown_0840CAA0);
        LoadSpritePalette(&gUnknown_0840CAB0);

        gMain.state += 1;
        break;
    }
    case 1:
        gTasks[taskIdA].data[TDA_TASK_D_ID] = CreateTask(task_d_8144514, 0);
        gTasks[gTasks[taskIdA].data[TDA_TASK_D_ID]].data[TDD_STATE] = 1;
        gTasks[gTasks[taskIdA].data[TDA_TASK_D_ID]].data[TDD_TASK_A_ID] = taskIdA;
        gTasks[gTasks[taskIdA].data[TDA_TASK_D_ID]].data[TDD_2] = gTasks[taskIdA].data[TDA_7];

        BeginNormalPaletteFade(-1, 0, 16, 0, 0);
        REG_BG3HOFS = 0;
        REG_BG3VOFS = 32;
        REG_BG3CNT = BGCNT_PRIORITY(3) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(7) | BGCNT_16COLOR | BGCNT_TXT256x256;
        REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON | DISPCNT_BG3_ON | DISPCNT_OBJ_ON;

        gMain.state = 0;
        gUnknown_0203935C = 0;
        gTasks[taskIdA].func = task_a_8143B38;
        break;
    }
}

static void task_a_8143EBC(u8 taskIdA)
{
    if (gTasks[taskIdA].data[TDA_12])
    {
        gTasks[taskIdA].data[TDA_12] -= 1;
        return;
    }

    BeginNormalPaletteFade(-1, 12, 0, 16, 0);
    gTasks[taskIdA].func = task_a_8143F04;
}

static void task_a_8143F04(u8 taskIdA)
{
    if (!gPaletteFade.active)
    {
        sub_81450AC(taskIdA);
        gTasks[taskIdA].func = task_a_8143F3C;
    }
}

static void task_a_8143F3C(u8 taskIdA)
{
    u16 backup;

    sub_8144130();
    ResetPaletteFade();
    sub_8145128(0, 0x3800, 0);
    ResetSpriteData();
    FreeAllSpritePalettes();
    BeginNormalPaletteFade(-1, 8, 16, 0, 0);

    REG_BG0CNT = BGCNT_PRIORITY(0) | BGCNT_CHARBASE(0) | BGCNT_SCREENBASE(7) | BGCNT_16COLOR | BGCNT_TXT256x256;
    backup = REG_IME;
    REG_IME = 0;
    REG_IE |= INTR_FLAG_VBLANK;
    REG_IME = backup;
    REG_DISPSTAT |= DISPSTAT_VBLANK_INTR;
    REG_DISPCNT = DISPCNT_MODE_0 | DISPCNT_OBJ_1D_MAP | DISPCNT_BG0_ON;

    gTasks[taskIdA].data[TDA_0] = 0x100;
    gTasks[taskIdA].func = task_a_8143FDC;
}

static void task_a_8143FDC(u8 taskIdA)
{
    if (gTasks[taskIdA].data[TDA_0])
    {
        gTasks[taskIdA].data[TDA_0] -= 1;
        return;
    }

    BeginNormalPaletteFade(-1, 6, 0, 16, 0);
    gTasks[taskIdA].func = task_a_8144024;
}

static void task_a_8144024(u8 taskIdA)
{
    if (!gPaletteFade.active)
    {
        sub_81452D0(0x3800, 0);

        BeginNormalPaletteFade(-1, 0, 0, 0, 0);
        gTasks[taskIdA].data[TDA_0] = 7200;
        gTasks[taskIdA].func = task_a_8144080;
    }
}

static void task_a_8144080(u8 taskIdA)
{
    if (!gPaletteFade.active)
    {
        if (gTasks[taskIdA].data[TDA_0] == 0)
        {
            FadeOutBGM(4);
            BeginNormalPaletteFade(-1, 8, 0, 16, 0xFFFF);
            gTasks[taskIdA].func = task_a_8144114;
            return;
        }

        if (gMain.newKeys)
        {
            FadeOutBGM(4);
            BeginNormalPaletteFade(-1, 8, 0, 16, 0xFFFF);
            gTasks[taskIdA].func = task_a_8144114;
            return;
        }

        if (gTasks[taskIdA].data[TDA_0] == 7144)
        {
            FadeOutBGM(8);
        }

        if (gTasks[taskIdA].data[TDA_0] == 6840)
            m4aSongNumStart(BGM_END);

        gTasks[taskIdA].data[TDA_0] -= 1;
    }
}

static void task_a_8144114(u8 taskIdA)
{
    if (!gPaletteFade.active)
        SoftReset(0xFF);
}

static void sub_8144130(void)
{
    REG_DISPCNT = 0;

    REG_BG3HOFS = 0;
    REG_BG3VOFS = 0;
    REG_BG2HOFS = 0;
    REG_BG2VOFS = 0;
    REG_BG1HOFS = 0;
    REG_BG1VOFS = 0;
    REG_BG0HOFS = 0;
    REG_BG0VOFS = 0;

    REG_BLDCNT = 0;
    REG_BLDALPHA = 0;
    REG_BLDY = 0;

    DmaFill16(3, 0, (void *)VRAM, VRAM_SIZE);
    DmaFill32(3, 0, (void *)OAM, OAM_SIZE);
    DmaFill16(3, 0, (void *)(PLTT + 2), PLTT_SIZE - 2);
}

static void task_b_81441B8(u8 taskIdB)
{
    u16 i;

    switch (gTasks[taskIdB].data[TDB_0])
    {
    case 0:
    case 6:
    case 7:
    case 8:
    case 9:
    default:
        if (!gPaletteFade.active)
        {
            gTasks[taskIdB].data[TDB_0] = 1;
            gTasks[taskIdB].data[TDB_3] = 0x58;
            gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_14] = 0;
            gUnknown_02039320 = 0;
        }
        return;
    case 1:
        if (gTasks[taskIdB].data[TDB_3] != 0)
        {
            gTasks[taskIdB].data[TDB_3] -= 1;
            return;
        }
        gTasks[taskIdB].data[TDB_0] += 1;
        return;
    case 2:
        REG_DISPCNT &= ~DISPCNT_BG0_ON;
        if (gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].func == task_a_8143B68)
        {
            if (gTasks[taskIdB].data[TDB_CURRENT_PAGE] < PAGE_COUNT)
            {
                for (i = 0; i < 5; i++)
                    sub_8072BD8(gCreditsEntryPointerTable[gTasks[taskIdB].data[TDB_CURRENT_PAGE]][i]->text, 0, 9 + i * 2, 240);

                gTasks[taskIdB].data[TDB_CURRENT_PAGE] += 1;
                gTasks[taskIdB].data[TDB_0] += 1;

                gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_14] = 1;

                if (gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_13] == 1)
                    BeginNormalPaletteFade(0x300, 0, 16, 0, COLOR_LIGHT_GREEN);
                else
                    BeginNormalPaletteFade(0x300, 0, 16, 0, COLOR_DARK_GREEN);
                return;
            }
            gTasks[taskIdB].data[TDB_0] = 10;
            return;
        }
        gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_14] = 0;
        return;
    case 3:
        REG_DISPCNT |= DISPCNT_BG0_ON;
        if (!gPaletteFade.active)
        {
            gTasks[taskIdB].data[TDB_3] = UNK_DEFINE_82;
            gTasks[taskIdB].data[TDB_0] += 1;
        }
        return;
    case 4:
        if (gTasks[taskIdB].data[TDB_3] != 0)
        {
            gTasks[taskIdB].data[TDB_3] -= 1;
            return;
        }

        if (sub_8144454((u8)gTasks[taskIdB].data[TDB_CURRENT_PAGE], (u8)gTasks[taskIdB].data[TDB_TASK_A_ID]))
        {
            gTasks[taskIdB].data[TDB_0] += 1;
            return;
        }
        gTasks[taskIdB].data[TDB_0] += 1;
        if (gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_13] == 1)
            BeginNormalPaletteFade(0x300, 0, 0, 16, COLOR_LIGHT_GREEN);
        else
            BeginNormalPaletteFade(0x300, 0, 0, 16, COLOR_DARK_GREEN);
        return;
    case 5:
        if (!gPaletteFade.active)
        {
            MenuZeroFillWindowRect(0, 9, 29, 19);
            gTasks[taskIdB].data[TDB_0] = 2;
        }
        return;

    case 10:
        gTasks[gTasks[taskIdB].data[TDB_TASK_A_ID]].data[TDA_4] = 1;
        DestroyTask(taskIdB);
        return;
    }
}

static u8 sub_8144454(u8 page, u8 taskIdA)
{
    // Starts with bike + ocean + morning

    if (page == PAGE_PROGRAMMERS_1)
    {
        // Grass patch
        gTasks[taskIdA].data[TDA_11] = 2;
    }

    if (page == PAGE_POKEMON_GRAHPIC_DESIGNERS_3)
    {
        // Bike + ocean + sunset
        gTasks[taskIdA].data[TDA_7] = 1;
        gTasks[taskIdA].data[TDA_11] = 1;
    }

    if (page == PAGE_GAME_DESIGNERS_2)
    {
        // Grass patch
        gTasks[taskIdA].data[TDA_11] = 2;
    }

    if (page == PAGE_MAP_DATA_DESIGNERS)
    {
        // Bike + forest + sunset
        gTasks[taskIdA].data[TDA_7] = 2;
        gTasks[taskIdA].data[TDA_11] = 1;
    }

    if (page == PAGE_SPECIAL_THANKS_1)
    {
        // Grass patch
        gTasks[taskIdA].data[TDA_11] = 2;
    }

    if (page == PAGE_TASK_MANAGERS)
    {
        // Bike + forest + sunset
        gTasks[taskIdA].data[TDA_7] = 3;
        gTasks[taskIdA].data[TDA_11] = 1;
    }

    if (page == PAGE_TRANSLATION_COORDINATOR)
    {
        // Grass patch
        gTasks[taskIdA].data[TDA_11] = 2;
    }

    if (page == LAST_PAGE)
    {
        // Bike + town + night
        gTasks[taskIdA].data[TDA_7] = 4;
        gTasks[taskIdA].data[TDA_11] = 1;
    }

    if (gTasks[taskIdA].data[TDA_11] != 0)
    {
        // Returns true if changed?
        return TRUE;
    }

    return FALSE;
}

static void task_d_8144514(u8 taskIdD)
{
    struct Unk201C000 *r6 = &ewram1c000;
    u8 r2;

    switch (gTasks[taskIdD].data[TDD_STATE])
    {
    case 0:
        break;
    case 1:
        if (r6->unk8A == 0 && gTasks[gTasks[taskIdD].data[TDD_TASK_A_ID]].data[TDA_14] == 0)
            break;
        gTasks[gTasks[taskIdD].data[TDD_TASK_A_ID]].data[TDA_14] = 0;
        gTasks[taskIdD].data[TDD_STATE]++;
        break;
    case 2:
        if (r6->unk88 == POKEMON_TILE_COUNT || gTasks[gTasks[taskIdD].data[TDD_TASK_A_ID]].func != task_a_8143B68)
            break;
        r2 = sub_81456B4(r6->unk0[r6->unk8C], gUnknown_0840CA00[r6->unk8A][0], gUnknown_0840CA00[r6->unk8A][1], r6->unk8A);
        if (r6->unk8C < r6->unk8E - 1)
        {
            r6->unk8C++;
            gSprites[r2].data3 = 50;
        }
        else
        {
            r6->unk8C = 0;
            gSprites[r2].data3 = 512;
        }
        r6->unk88++;
        if (r6->unk8A == 2)
            r6->unk8A = 0;
        else
            r6->unk8A++;
        gTasks[taskIdD].data[TDD_3] = 50;
        gTasks[taskIdD].data[TDD_STATE]++;
        break;
    case 3:
        if (gTasks[taskIdD].data[TDD_3] != 0)
            gTasks[taskIdD].data[TDD_3]--;
        else
            gTasks[taskIdD].data[TDD_STATE] = 1;
        break;
    }
}

void task_c_8144664(u8 taskIdC)
{
    switch (gTasks[taskIdC].data[TDC_0])
    {
    case 0:
        gUnknown_0203935A = Sin((gTasks[taskIdC].data[TDC_5] >> 1) & 0x7F, 12);
        gTasks[taskIdC].data[TDC_5]++;
        break;
    case 1:
        if (gUnknown_0203935A != 0)
        {
            gUnknown_0203935A = Sin((gTasks[taskIdC].data[TDC_5] >> 1) & 0x7F, 12);
            gTasks[taskIdC].data[TDC_5]++;
        }
        else
        {
            gSprites[gTasks[taskIdC].data[TDC_2]].data0 = 2;
            gTasks[taskIdC].data[TDC_5] = 0;
            gTasks[taskIdC].data[TDC_0]++;
        }
        break;
    case 2:
        if (gTasks[taskIdC].data[TDC_5] < 64)
        {
            gTasks[taskIdC].data[TDC_5]++;
            gUnknown_0203935A = Sin(gTasks[taskIdC].data[TDC_5] & 0x7F, 20);
        }
        else
        {
            gTasks[taskIdC].data[TDC_0]++;
        }
        break;
    case 3:
        gSprites[gTasks[taskIdC].data[TDC_2]].data0 = 3;
        gSprites[gTasks[taskIdC].data[TDC_3]].data0 = 1;
        gTasks[taskIdC].data[TDC_4] = 120;
        gTasks[taskIdC].data[TDC_0]++;
        break;
    case 4:
        if (gTasks[taskIdC].data[TDC_4] != 0)
        {
            gTasks[taskIdC].data[TDC_4]--;
        }
        else
        {
            gTasks[taskIdC].data[TDC_5] = 64;
            gTasks[taskIdC].data[TDC_0]++;
        }
        break;
    case 5:
        if (gTasks[taskIdC].data[TDC_5] > 0)
        {
            gTasks[taskIdC].data[TDC_5]--;
            gUnknown_0203935A = Sin(gTasks[taskIdC].data[TDC_5] & 0x7F, 20);
        }
        else
        {
            gSprites[gTasks[taskIdC].data[TDC_2]].data0 = 1;
            gTasks[taskIdC].data[TDC_0]++;
        }
        break;
    case 6:
        gTasks[taskIdC].data[TDC_0] = 50;
        break;
    case 10:
        gSprites[gTasks[taskIdC].data[TDC_3]].data0 = 2;
        gTasks[taskIdC].data[TDC_0] = 50;
        break;
    case 20:
        gSprites[gTasks[taskIdC].data[TDC_2]].data0 = 4;
        gTasks[taskIdC].data[TDC_0] = 50;
        break;
    case 30:
        gSprites[gTasks[taskIdC].data[TDC_2]].data0 = 5;
        gSprites[gTasks[taskIdC].data[TDC_3]].data0 = 3;
        gTasks[taskIdC].data[TDC_0] = 50;
        break;
    case 50:
        gTasks[taskIdC].data[TDC_0] = 0;
        break;
    }
}

void task_e_8144934(u8 taskIdE)
{
    s16 taskIdC;

    switch (gTasks[taskIdE].data[TDE_0])
    {
    default:
    case 0:
        if (gTasks[taskIdE].data[TDE_1] != 0x7FFF)
        {

            if (gTasks[gTasks[gTasks[taskIdE].data[TDE_TASK_A_ID]].data[TDA_TASK_B_ID]].data[TDB_CURRENT_PAGE] == PAGE_ART_DIRECTOR)
            {
                gTasks[gTasks[gTasks[taskIdE].data[TDE_TASK_A_ID]].data[TDA_TASK_C_ID]].data[TDC_0] = 20;
                gTasks[taskIdE].data[TDE_1] = 0x7FFF;
            }
        }
        sub_8149020(0);
        break;
    case 1:
        sub_8149020(0);
        break;
    case 2:
        if (gTasks[taskIdE].data[TDE_1] != 0x7FFF)
        {
            taskIdC = gTasks[gTasks[taskIdE].data[TDE_TASK_A_ID]].data[TDA_TASK_C_ID];

            // Floor to multiple of 128
            if ((gTasks[taskIdC].data[TDC_5] & -128) == 640)
            {
                gTasks[taskIdC].data[TDC_0] = 1;
                gTasks[taskIdE].data[TDE_1] = 0x7FFF;
            }
        }
        sub_8149020(1);
        break;
    case 3:
        if (gTasks[taskIdE].data[TDE_1] != 0x7FFF)
        {

            if (gTasks[taskIdE].data[TDE_1] == UNK_DEF_1F3)
            {
                gTasks[gTasks[gTasks[taskIdE].data[TDE_TASK_A_ID]].data[TDA_TASK_C_ID]].data[TDC_0] = 10;
                gTasks[taskIdE].data[TDE_1] = 0x7FFF;
            }
            else
            {
                gTasks[taskIdE].data[TDE_1] += 1;
            }
        }
        sub_8149020(1);
        break;
    case 4:
        sub_8149020(2);
        break;
    }
}

static void sub_8144A68(u8 data, u8 taskIdA)
{
    switch (data)
    {
    case 0:
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.x = 272;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.x = 272;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].data0 = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].data0 = 0;
        gTasks[taskIdA].data[TDA_0] = sub_8148EC0(0, 0x2000, 0x20, 8);
        break;
    case 1:
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.x = 120;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.x = 272;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].data0 = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].data0 = 0;
        gTasks[taskIdA].data[TDA_0] = sub_8148EC0(0, 0x2000, 0x20, 8);
        break;
    case 2:
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.x = 120;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.x = 272;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].data0 = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].data0 = 0;
        gTasks[taskIdA].data[TDA_0] = sub_8148EC0(1, 0x2000, 0x200, 8);
        break;
    case 3:
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.x = 120;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.x = -32;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].data0 = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].data0 = 0;
        gTasks[taskIdA].data[TDA_0] = sub_8148EC0(1, 0x2000, 0x200, 8);
        break;
    case 4:
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].invisible = 0;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.x = 88;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.x = 152;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].pos1.y = 46;
        gSprites[gTasks[taskIdA].data[TDA_PLAYER_CYCLIST]].data0 = 0;
        gSprites[gTasks[taskIdA].data[TDA_RIVAL_CYCLIST]].data0 = 0;
        gTasks[taskIdA].data[TDA_0] = sub_8148EC0(2, 0x2000, 0x200, 8);
        break;
    }

    gTasks[taskIdA].data[TDA_TASK_E_ID] = CreateTask(task_e_8144934, 0);
    gTasks[gTasks[taskIdA].data[TDA_TASK_E_ID]].data[TDE_0] = data;
    gTasks[gTasks[taskIdA].data[TDA_TASK_E_ID]].data[TDE_1] = 0;
    gTasks[gTasks[taskIdA].data[TDA_TASK_E_ID]].data[TDE_TASK_A_ID] = taskIdA;

    gTasks[taskIdA].data[TDA_TASK_C_ID] = CreateTask(task_c_8144664, 0);
    gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_0] = 0;
    gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_1] = taskIdA;
    gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_2] = gTasks[taskIdA].data[TDA_PLAYER_CYCLIST];
    gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_3] = gTasks[taskIdA].data[TDA_RIVAL_CYCLIST];
    gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_4] = 0;

    if (data == 2)
        gTasks[gTasks[taskIdA].data[TDA_TASK_C_ID]].data[TDC_5] = UNK_DEFINE_45;
}

static bool8 sub_8144ECC(u8 data, u8 taskIdA)
{
    u8 spriteId;

    switch (gMain.state)
    {
    default:
    case 0:
        REG_DISPCNT = 0;
        REG_BG3HOFS = 8;
        REG_BG3VOFS = 0;
        REG_BG2HOFS = 0;
        REG_BG2VOFS = 0;
        REG_BG1HOFS = 0;
        REG_BG1VOFS = 0;
        REG_BLDCNT = 0;
        REG_BLDALPHA = 0;
        ResetSpriteData();
        FreeAllSpritePalettes();
        gMain.state = 1;
        break;
    case 1:
        gUnknown_02039358 = 34;
        gUnknown_0203935A = 0;
        sub_8148CB0(data);
        gMain.state += 1;
        break;
    case 2:
        if (gSaveBlock2.playerGender == MALE)
        {
            LoadCompressedObjectPic(&gIntro2BrendanSpriteSheet);
            LoadCompressedObjectPic(&gUnknown_08416E34);
            LoadCompressedObjectPic(&gIntro2BicycleSpriteSheet);
            LoadSpritePalettes(gIntro2SpritePalettes);

            spriteId = intro_create_brendan_sprite(120, 46);
            gTasks[taskIdA].data[TDA_PLAYER_CYCLIST] = spriteId;
            gSprites[spriteId].callback = spritecb_player_8145378;
            gSprites[spriteId].anims = gSpriteAnimTable_0840CA54;

            spriteId = intro_create_may_sprite(272, 46);
            gTasks[taskIdA].data[TDA_RIVAL_CYCLIST] = spriteId;
            gSprites[spriteId].callback = spritecb_rival_8145420;
            gSprites[spriteId].anims = gSpriteAnimTable_0840CA94;
        }
        else
        {
            LoadCompressedObjectPic(&gIntro2MaySpriteSheet);
            LoadCompressedObjectPic(&gUnknown_08416E24);
            LoadCompressedObjectPic(&gIntro2BicycleSpriteSheet);
            LoadSpritePalettes(gIntro2SpritePalettes);

            spriteId = intro_create_may_sprite(120, 46);
            gTasks[taskIdA].data[TDA_PLAYER_CYCLIST] = spriteId;
            gSprites[spriteId].callback = spritecb_player_8145378;
            gSprites[spriteId].anims = gSpriteAnimTable_0840CA54;

            spriteId = intro_create_brendan_sprite(272, 46);
            gTasks[taskIdA].data[TDA_RIVAL_CYCLIST] = spriteId;
            gSprites[spriteId].callback = spritecb_rival_8145420;
            gSprites[spriteId].anims = gSpriteAnimTable_0840CA94;
        };
        gMain.state += 1;
        break;
    case 3:
        sub_8144A68(data, taskIdA);
        sub_8148E90(data);
        gMain.state = 0;
        return TRUE;
    }
    return FALSE;
}

static void sub_81450AC(u8 taskIdA)
{
    if (gTasks[taskIdA].data[TDA_0] != 0)
    {
        DestroyTask(gTasks[taskIdA].data[TDA_0]);
        gTasks[taskIdA].data[TDA_0] = 0;
    }

    if (gTasks[taskIdA].data[TDA_TASK_C_ID] != 0)
    {
        DestroyTask(gTasks[taskIdA].data[TDA_TASK_C_ID]);
        gTasks[taskIdA].data[TDA_TASK_C_ID] = 0;
    }

    if (gTasks[taskIdA].data[TDA_TASK_E_ID] != 0)
    {
        DestroyTask(gTasks[taskIdA].data[TDA_TASK_E_ID]);
        gTasks[taskIdA].data[TDA_TASK_E_ID] = 0;
    }

    if (gTasks[taskIdA].data[TDA_TASK_D_ID] != 0)
    {
        DestroyTask(gTasks[taskIdA].data[TDA_TASK_D_ID]);
        gTasks[taskIdA].data[TDA_TASK_D_ID] = 0;
    }

    gUnknown_0203935C = 1;
}

static void sub_8145128(u16 arg0, u16 arg1, u16 arg2)
{
    u16 baseTile;
    u16 i;

    LZ77UnCompVram(gCreditsCopyrightEnd_Gfx, (void *) (VRAM + arg0));
    LoadPalette(gIntroCopyright_Pal, arg2, sizeof(gIntroCopyright_Pal));

    baseTile = (arg2 / 16) << 12;

    for (i = 0; i < 32 * 32; i++)
        ((u16 *) (VRAM + arg1))[i] = baseTile + 1;

    for (i = 0; i < 21; i++)
        ((u16 *) (VRAM + arg1))[7 * 32 + 4 + i] = i + 2 + baseTile;

    for (i = 0; i < 20; i++)
        ((u16 *) (VRAM + arg1))[9 * 32 + 4 + i] = i + 23 + baseTile;

    for (i = 0; i < 23; i++)
        ((u16 *) (VRAM + arg1))[11 * 32 + 4 + i] = i + 43 + baseTile;

    for (i = 0; i < 12; i++)
        ((u16 *) (VRAM + arg1))[13 * 32 + 4 + i] = i + 66 + baseTile;
}

u16 sub_8145208(u8 arg0)
{
    u16 out = (arg0 & 0x3F) + 80;

    if (arg0 == 0xFF)
        return 1;

    if (arg0 & (1 << 7))
        out |= 1 << 11;
    if (arg0 & (1 << 6))
        out |= 1 << 10;

    return out;
}

void sub_814524C(u8 arg0[], u8 baseX, u8 baseY, u16 arg3, u16 palette)
{
    u8 y, x;
    const u16 tileOffset = (palette / 16) << 12;

    for (y = 0; y < 5; y++)
    {
        for (x = 0; x < 3; x++)
            ((u16 *) (VRAM + arg3 + (baseY + y) * 64))[baseX + x] = tileOffset + sub_8145208(arg0[y * 3 + x]);
    }
}

static void sub_81452D0(u16 arg0, u16 palette)
{
    u16 pos;
    u16 baseTile = (palette / 16) << 12;

    for (pos = 0; pos < 32 * 32; pos++)
        ((u16 *) (VRAM + arg0))[pos] = baseTile + 1;

#if ENGLISH
    sub_814524C(gUnknown_0840B83C, 3, 7, arg0, palette);
    sub_814524C(gUnknown_0840B84B, 7, 7, arg0, palette);
    sub_814524C(gUnknown_0840B85A, 11, 7, arg0, palette);
    sub_814524C(gUnknown_0840B85A, 16, 7, arg0, palette);
    sub_814524C(gUnknown_0840B869, 20, 7, arg0, palette);
    sub_814524C(gUnknown_0840B878, 24, 7, arg0, palette);
#elif GERMAN
    sub_814524C(gUnknown_0840B85A, 7, 7, arg0, palette);
    sub_814524C(gUnknown_0840B869, 11, 7, arg0, palette);
    sub_814524C(gUnknown_0840B878, 15, 7, arg0, palette);
    sub_814524C(gUnknown_0840B85A, 19, 7, arg0, palette);
#endif
}

static void spritecb_player_8145378(struct Sprite *sprite)
{
    if (gUnknown_0203935C != 0)
    {
        DestroySprite(sprite);
        return;
    }

    switch (sprite->data0)
    {
    case 0:
        StartSpriteAnimIfDifferent(sprite, 0);
        break;
    case 1:
        StartSpriteAnimIfDifferent(sprite, 1);
        if (sprite->pos1.x > -32)
            sprite->pos1.x -= 1;
        break;
    case 2:
        StartSpriteAnimIfDifferent(sprite, 2);
        break;
    case 3:
        StartSpriteAnimIfDifferent(sprite, 3);
        break;
    case 4:
        StartSpriteAnimIfDifferent(sprite, 0);
        if (sprite->pos1.x > 120)
            sprite->pos1.x -= 1;
        break;
    case 5:
        StartSpriteAnimIfDifferent(sprite, 0);
        if (sprite->pos1.x > -32)
            sprite->pos1.x -= 1;
        break;
    }
}

static void spritecb_rival_8145420(struct Sprite *sprite)
{
    if (gUnknown_0203935C != 0)
    {
        DestroySprite(sprite);
        return;
    }

    switch (sprite->data0)
    {
    case 0:
        sprite->pos2.y = 0;
        StartSpriteAnimIfDifferent(sprite, 0);
        break;
    case 1:
        if (sprite->pos1.x > 200)
            StartSpriteAnimIfDifferent(sprite, 1);
        else
            StartSpriteAnimIfDifferent(sprite, 2);
        if (sprite->pos1.x > -32)
            sprite->pos1.x -= 2;
        sprite->pos2.y = -gUnknown_0203935A;
        break;
    case 2:
        sprite->data7 += 1;
        StartSpriteAnimIfDifferent(sprite, 0);
        if ((sprite->data7 & 3) == 0)
            sprite->pos1.x += 1;
        break;
    case 3:
        StartSpriteAnimIfDifferent(sprite, 0);
        if (sprite->pos1.x > -32)
            sprite->pos1.x -= 1;
        break;
    }
}

void spritecb_81454E0(struct Sprite *sprite)
{
    if (gUnknown_0203935C)
    {
        DestroySprite(sprite);
        return;
    }

    sprite->data7 += 1;
    switch (sprite->data0)
    {
    case 0:
    default:
        sprite->oam.affineMode = 1;
        sprite->oam.matrixNum = sprite->data1;
        sprite->data2 = 16;
        SetOamMatrix(sprite->data1, 0x10000 / sprite->data2, 0, 0, 0x10000 / sprite->data2);
        sprite->invisible = FALSE;
        sprite->data0 = 1;
        break;
    case 1:
        if (sprite->data2 < 256)
        {
            sprite->data2 += 8;
            SetOamMatrix(sprite->data1, 0x10000 / sprite->data2, 0, 0, 0x10000 / sprite->data2);
        }
        else
        {
            sprite->data0 += 1;
        }
        switch (sprite->data1)
        {
        case 1:
            if ((sprite->data7 & 3) == 0)
                sprite->pos1.y += 1;
            sprite->pos1.x -= 2;
            break;
        case 2:
            break;
        case 3:
            if ((sprite->data7 & 3) == 0)
                sprite->pos1.y += 1;
            sprite->pos1.x += 2;
            break;
        }
        break;
    case 2:
        if (sprite->data3 != 0)
        {
            sprite->data3 -= 1;
        }
        else
        {
            REG_BLDCNT = 0xF40;
            REG_BLDALPHA = 0x10;
            sprite->oam.objMode = 1;
            sprite->data3 = 16;
            sprite->data0 += 1;
        }
        break;
    case 3:
        if (sprite->data3 != 0)
        {
            int data3;
            vu16 *reg;

            sprite->data3 -= 1;

            reg = &REG_BLDALPHA;
            data3 = 16 - sprite->data3;
            *reg = (data3 << 8) + sprite->data3;
        }
        else
        {
            sprite->invisible = TRUE;
            sprite->data0 = 10;
        }
        break;
    case 10:
        REG_BLDCNT = 0;
        REG_BLDALPHA = 0;
        DestroySprite(sprite);
        break;
    }
}

static u8 sub_81456B4(u16 species, u16 x, u16 y, u16 position)
{
    u32 personality;
    const u8 *lzPaletteData;
    u8 spriteId;
    u8 spriteId2;

    species = NationalPokedexNumToSpecies(species);
    switch (species)
    {
    default:
        personality = 0;
        break;
    case SPECIES_SPINDA:
        personality = gSaveBlock2.pokedex.spindaPersonality;
        break;
    case SPECIES_UNOWN:
        personality = gSaveBlock2.pokedex.unownPersonality;
        break;
    }

    LoadSpecialPokePic(
        &gMonFrontPicTable[species],
        gMonFrontPicCoords[species].coords,
        gMonFrontPicCoords[species].y_offset,
        0x2000000,
        gUnknown_0840B5A0[position],
        species,
        personality,
        1
    );

    lzPaletteData = species_and_otid_get_pal(species, 0, 0xFFFF);
    LoadCompressedPalette(lzPaletteData, 0x100 + (position * 16), 0x20);
    sub_8143648(position, position);

    spriteId = CreateSprite(&gUnknown_02024E8C, x, y, 0);
    gSprites[spriteId].oam.paletteNum = position;
    gSprites[spriteId].oam.priority = 1;
    gSprites[spriteId].data1 = position + 1;
    gSprites[spriteId].invisible = TRUE;
    gSprites[spriteId].callback = spritecb_81454E0;

    spriteId2 = CreateSprite(&gSpriteTemplate_840CAEC, gSprites[spriteId].pos1.x, gSprites[spriteId].pos1.y, 1);
    gSprites[spriteId2].data0 = spriteId;

    StartSpriteAnimIfDifferent(&gSprites[spriteId2], position);

    return spriteId;
}

void spritecb_814580C(struct Sprite *sprite)
{
    if (gSprites[sprite->data0].data0 == 10 || gUnknown_0203935C)
    {
        DestroySprite(sprite);
        return;
    }

    sprite->invisible = gSprites[sprite->data0].invisible;
    sprite->oam.objMode = gSprites[sprite->data0].oam.objMode;
    sprite->oam.affineMode = gSprites[sprite->data0].oam.affineMode;
    sprite->oam.matrixNum = gSprites[sprite->data0].oam.matrixNum;
    sprite->pos1.x = gSprites[sprite->data0].pos1.x;
    sprite->pos1.y = gSprites[sprite->data0].pos1.y;
}

static void sub_81458DC(void)
{
    struct Unk201C000 *unk201C000 = &ewram1c000;
    u16 starter = SpeciesToNationalPokedexNum(GetStarterPokemon(VarGet(VAR_FIRST_POKE)));
    u16 seenTypesCount;
    u16 page;
    u16 dexNum;
    u16 j;

    for (dexNum = 1, seenTypesCount = 0; dexNum < 386; dexNum++)
    {
        if (GetNationalPokedexFlag(dexNum, 1))
        {
            unk201C000->unk90[seenTypesCount] = dexNum;
            seenTypesCount++;
        }
    }

    for (dexNum = seenTypesCount; dexNum < 386; dexNum++)
        unk201C000->unk90[dexNum] = 0;

    unk201C000->unk394 = seenTypesCount;
    if (unk201C000->unk394 < POKEMON_TILE_COUNT)
        unk201C000->unk8E = seenTypesCount;
    else
        unk201C000->unk8E = POKEMON_TILE_COUNT;

    j = 0;
    do
    {
        page = Random() % unk201C000->unk394;
        unk201C000->unk0[j] = unk201C000->unk90[page];

        j++;
        unk201C000->unk90[page] = 0;
        unk201C000->unk394--;
        if (page != unk201C000->unk394)
        {
            unk201C000->unk90[page] = unk201C000->unk90[unk201C000->unk394];
            unk201C000->unk90[unk201C000->unk394] = 0;
        }
    }
    while (unk201C000->unk394 != 0 && j < POKEMON_TILE_COUNT);

    if (unk201C000->unk8E < POKEMON_TILE_COUNT)
    {
        for (j = unk201C000->unk8E, page = 0; j < POKEMON_TILE_COUNT; j++)
        {
            unk201C000->unk0[j] = unk201C000->unk0[page];

            page++;
            if (page == unk201C000->unk8E)
                page = 0;
        }
        unk201C000->unk0[POKEMON_TILE_COUNT - 1] = starter;
    }
    else
    {
        for (dexNum = 0; unk201C000->unk0[dexNum] != starter && dexNum < POKEMON_TILE_COUNT; dexNum++);

        if (dexNum < unk201C000->unk8E - 1)
        {
            unk201C000->unk0[dexNum] = unk201C000->unk0[POKEMON_TILE_COUNT - 1];
            unk201C000->unk0[POKEMON_TILE_COUNT - 1] = starter;
        }
        else
        {
            unk201C000->unk0[POKEMON_TILE_COUNT - 1] = starter;
        }
    }
    unk201C000->unk8E = POKEMON_TILE_COUNT;
}