pokeemerald/src/pokenav_unk_2.c

#include "global.h"
#include "alloc.h"
#include "decompress.h"
#include "bg.h"
#include "palette.h"
#include "trig.h"
#include "gpu_regs.h"
#include "menu.h"
#include "window.h"
#include "pokenav.h"
#include "graphics.h"
#include "sound.h"
#include "gym_leader_rematch.h"
#include "window.h"
#include "strings.h"
#include "scanline_effect.h"
#include "constants/songs.h"
#include "constants/rgb.h"

// Match Call

struct Pokenav2Struct
{
    bool32 (*callback)(void);
    u32 loopedTaskId;
    u16 field_008;
    u8 field_00a;
    u8 field_00b;
    u8 field_00c;
    u8 field_00d;
    bool32 field_010[6];
    struct Sprite * field_028;
    struct Sprite * field_02c[6][4];
    u8 field_08c[0x800];
};

static struct Pokenav2Struct * sub_81C9958(void);
static bool32 sub_81C99FC(void);
static u32 sub_81C9A10(s32 state);
static u32 sub_81C9C6C(s32 state);
static u32 sub_81C9CA8(s32 state);
static u32 sub_81C9D44(s32 state);
static u32 sub_81C9DD8(s32 state);
static u32 sub_81C9E58(s32 state);
static u32 sub_81C9EC8(s32 state);
static u32 sub_81C9EF8(s32 state);
static u32 sub_81C9F28(s32 state);
static void sub_81C9FC4(void);
static void sub_81C9FEC(void);
static void sub_81CA02C(void);
static void sub_81CA094(void);
static void sub_81CA0C8(void);
static void sub_81CA0EC(const u16 *const * a0, s32 a1, s32 a2);
static void sub_81CA20C(void);
static void sub_81CA278(void);
static void sub_81CA35C(struct Sprite ** sprites, s32 a1, s32 a2, s32 a3);
static void sub_81CA3B4(struct Sprite ** sprites);
static void sub_81CA2DC(void);
static bool32 sub_81CA324(void);
static void sub_81CA448(struct Sprite ** sprites, bool32 a1);
static void sub_81CA474(struct Sprite * sprite);
static void sub_81CA4AC(struct Sprite * sprite);
static void sub_81CA580(u8 taskId);
static void sub_81CA640(void);
static void sub_81CA6AC(struct Sprite * sprite);
static void sub_81CA698(void);
static void sub_81CA6E0(void);
static void sub_81CA714(void);
static void sub_81CA770(void);
static bool32 sub_81CA7C4(void);
static void sub_81CA7D4(void);
static void sub_81CA7F4(void);
static void sub_81CA808(u8 taskId);
static void sub_81CA818(void);
static void sub_81CA850(void);
static void sub_81CA864(void);
static bool32 sub_81CA89C(void);
static void sub_81CA8B0(u8 taskId);
static void titlescreen_0(void);
static void sub_81CA994(void);
static void sub_81CA9C8(void);
static void sub_81CA9D8(void);
static void sub_81CA9EC(u8 taskId);
static void sub_81CAA3C(void);

static const u16 gUnknown_0861FC78[] = INCBIN_U16("graphics/pokenav/bg.gbapal");
static const u32 gUnknown_0861FC98[] = INCBIN_U32("graphics/pokenav/bg.4bpp.lz");
static const u32 gUnknown_0861FCAC[] = INCBIN_U32("graphics/pokenav/bg.bin.lz");
static const u16 gUnknown_0861FD4C[] = INCBIN_U16("graphics/pokenav/outline.gbapal");
static const u32 gUnknown_0861FD6C[] = INCBIN_U32("graphics/pokenav/outline.4bpp.lz");
static const u32 gUnknown_0861FFF4[] = INCBIN_U32("graphics/pokenav/outline_map.bin.lz");
static const u16 gUnknown_08620104[] = INCBIN_U16("graphics/pokenav/blue_light.gbapal");
static const u32 gUnknown_08620124[] = INCBIN_U32("graphics/pokenav/blue_light.4bpp.lz");

static const struct BgTemplate gUnknown_08620194[] = {
    {
        .bg = 1,
        .charBaseIndex = 1,
        .mapBaseIndex = 15,
        .screenSize = 0,
        .paletteMode = 0,
        .priority = 1,
        .baseTile = 0x000
    }, {
        .bg = 2,
        .charBaseIndex = 2,
        .mapBaseIndex = 23,
        .screenSize = 0,
        .paletteMode = 0,
        .priority = 2,
        .baseTile = 0x000
    }, {
        .bg = 3,
        .charBaseIndex = 3,
        .mapBaseIndex = 31,
        .screenSize = 0,
        .paletteMode = 0,
        .priority = 3,
        .baseTile = 0x000
    }
};

static const LoopedTask gUnknown_086201A0[] = {
    NULL,
    sub_81C9C6C,
    sub_81C9CA8,
    sub_81C9D44,
    sub_81C9DD8,
    sub_81C9E58,
    sub_81C9EC8,
    sub_81C9EF8,
    sub_81C9F28
};

static const struct CompressedSpriteSheet gUnknown_086201C4[] =
{
    {
        .data = gPokenavOptions_Gfx,
        .size = 0x3400,
        .tag = 0x0003
    },
    {
        .data = gUnknown_08620124,
        .size = 0x0100,
        .tag = 0x0001
    }
};

static const struct SpritePalette gUnknown_086201D4[] =
{
    {gPokenavOptions_Pal + 0x00, 4},
    {gPokenavOptions_Pal + 0x10, 5},
    {gPokenavOptions_Pal + 0x20, 6},
    {gPokenavOptions_Pal + 0x30, 7},
    {gPokenavOptions_Pal + 0x40, 8},
    {gUnknown_08620104, 3},
    {}
};

static const u16 gUnknown_0862020C[] = {0, 0};
static const u16 gUnknown_08620210[] = {0x20, 1};
static const u16 gUnknown_08620214[] = {0x40, 4};
static const u16 gUnknown_08620218[] = {0x60, 2};
static const u16 gUnknown_0862021C[] = {0x80, 3};
static const u16 gUnknown_08620220[] = {0xA0, 1};
static const u16 gUnknown_08620224[] = {0xC0, 1};
static const u16 gUnknown_08620228[] = {0xE0, 4};
static const u16 gUnknown_0862022C[] = {0x100, 1};
static const u16 gUnknown_08620230[] = {0x120, 2};
static const u16 gUnknown_08620234[] = {0x140, 0};
static const u16 gUnknown_08620238[] = {0x160, 0};
static const u16 gUnknown_0862023C[] = {0x180, 3};

struct UnkStruct_08620240
{
    u16 unk0;
    u16 unk2;
    const u16 *unk4[6];
};

static const struct UnkStruct_08620240 gUnknown_08620240[5] =
{
    {
        0x2A,
            0x14,
            {gUnknown_0862020C, gUnknown_08620210, gUnknown_0862021C}
    },
    {
        0x2A,
            0x14,
            {gUnknown_0862020C, gUnknown_08620210, gUnknown_08620214, gUnknown_0862021C}
    },
    {
        0x2A,
            0x14,
            {gUnknown_0862020C, gUnknown_08620210, gUnknown_08620214, gUnknown_08620218, gUnknown_0862021C}
    },
    {
        0x38,
            0x14,
            {gUnknown_08620220, gUnknown_08620224, gUnknown_0862023C}
    },
    {
        0x28,
            0x10,
            {gUnknown_08620228, gUnknown_0862022C, gUnknown_08620230, gUnknown_08620234, gUnknown_08620238, gUnknown_0862023C}
    },
};

static const struct WindowTemplate gUnknown_086202CC =
{
    .bg = 1,
    .tilemapLeft = 3,
    .tilemapTop = 17,
    .width = 0x18,
    .height = 0x2,
    .paletteNum = 1,
    .baseBlock = 8
};

static const u8 *const gUnknown_086202D4[] =
{
    gUnknown_085EBCC5,
        gUnknown_085EBCE8,
        gUnknown_085EBD01,
        gUnknown_085EBD1C,
        gUnknown_085EBD34,
        gUnknown_085EBD83,
        gUnknown_085EBDA2,
        gUnknown_085EBDBF,
        gUnknown_085EBDDB,
        gUnknown_085EBDEE,
        gUnknown_085EBE06,
        gUnknown_085EBE19,
        gUnknown_085EBE2D,
        gUnknown_085EBE41
};

static const u8 gUnknown_0862030C[] = {6, 8, 7};

static const u8 gUnknown_0862030F[] = {6, 8, 7, 0, 0};

static const struct OamData gUnknown_08620314 =
{
    .y = 0,
    .affineMode = 0,
    .objMode = 0,
    .bpp = 0,
    .shape = SPRITE_SHAPE(32x16),
    .x = 0,
    .size = SPRITE_SIZE(32x16),
    .tileNum = 0,
    .priority = 2,
    .paletteNum = 0,
};

static const union AffineAnimCmd gUnknown_0862031C[] =
{
    AFFINEANIMCMD_FRAME(0x100, 0x100, 0, 0),
    AFFINEANIMCMD_END,
};

static const union AffineAnimCmd gUnknown_0862032C[] =
{
    AFFINEANIMCMD_FRAME(0x100, 0x100, 0, 0),
    AFFINEANIMCMD_FRAME(0x10, 0x10, 0, 0x12),
    AFFINEANIMCMD_END,
};

static const union AffineAnimCmd *const gUnknown_08620344[] =
{
    gUnknown_0862031C,
        gUnknown_0862032C
};

static const struct SpriteTemplate gUnknown_0862034C =
{
    .tileTag = 3,
    .paletteTag = 4,
    .oam = &gUnknown_08620314,
    .anims = gDummySpriteAnimTable,
    .images = NULL,
    .affineAnims = gUnknown_08620344,
    .callback = SpriteCallbackDummy,
};

static const struct OamData gUnknown_08620364 =
{
    .y = 0,
    .affineMode = 0,
    .objMode = 0,
    .bpp = 0,
    .shape = SPRITE_SHAPE(32x16),
    .x = 0,
    .size = SPRITE_SIZE(32x16),
    .tileNum = 0,
    .priority = 2,
    .paletteNum = 0,
};

static const struct SpriteTemplate gUnknown_0862036C =
{
    .tileTag = 1,
    .paletteTag = 3,
    .oam = &gUnknown_08620364,
    .anims = gDummySpriteAnimTable,
    .images = NULL,
    .affineAnims = gDummySpriteAffineAnimTable,
    .callback = SpriteCallbackDummy,
};

static const struct ScanlineEffectParams gUnknown_08620384 =
{
    (void *)REG_ADDR_WIN0H,
        ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1,
        1,
        0
};

static bool32 sub_81C98D4(void)
{
    s32 i;

    for (i = 0; i < REMATCH_TABLE_ENTRIES; i++)
    {
        if (sub_81CB0C8(i) == gMapHeader.regionMapSectionId
            && sub_81CAE08(i)
            && gSaveBlock1Ptr->trainerRematches[i])
            return TRUE;
    }

    return FALSE;
}

bool32 sub_81C9924(void)
{
    struct Pokenav2Struct * unk = sub_81C9958();

    if (unk == NULL)
        return FALSE;
    
    unk->field_00d = 0;
    return TRUE;
}

bool32 sub_81C9940(void)
{
    struct Pokenav2Struct * unk = sub_81C9958();

    if (unk == NULL)
        return FALSE;

    unk->field_00d = 1;
    return TRUE;
}

static struct Pokenav2Struct * sub_81C9958(void)
{
    struct Pokenav2Struct * unk = AllocSubstruct(2, sizeof(struct Pokenav2Struct));

    if (unk != NULL)
    {
        unk->field_00c = 0;
        unk->loopedTaskId = CreateLoopedTask(sub_81C9A10, 1);
        unk->callback = sub_81C99FC;
    }

    return unk;
}


void sub_81C9990(s32 ltIdx)
{
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    unk->loopedTaskId = CreateLoopedTask(gUnknown_086201A0[ltIdx], 1);
    unk->callback = sub_81C99FC;
}

bool32 sub_81C99C0(void)
{
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    return unk->callback();
}

void sub_81C99D4(void)
{
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    sub_81CA7F4();
    RemoveWindow(unk->field_008);
    sub_81C9FEC();
    sub_81CA994();
    FreePokenavSubstruct(2);
}

static bool32 sub_81C99FC(void)
{
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    return IsLoopedTaskActive(unk->loopedTaskId);
}

static u32 sub_81C9A10(s32 state)
{
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    switch (state)
    {
    case 0:
        InitBgTemplates(gUnknown_08620194, ARRAY_COUNT(gUnknown_08620194));
        decompress_and_copy_tile_data_to_vram(1, gPokenavMessageBox_Gfx, 0, 0, 0);
        SetBgTilemapBuffer(1, unk->field_08c);
        CopyToBgTilemapBuffer(1, gPokenavMessageBox_Tilemap, 0, 0);
        CopyBgTilemapBufferToVram(1);
        CopyPaletteIntoBufferUnfaded(gPokenavMessageBox_Pal, 0x10, 0x20);
        ChangeBgX(1, 0, 0);
        ChangeBgY(1, 0, 0);
        ChangeBgX(2, 0, 0);
        ChangeBgY(2, 0, 0);
        ChangeBgX(3, 0, 0);
        ChangeBgY(3, 0, 0);
        return LT_INC_AND_PAUSE;
    case 1:
        if (free_temp_tile_data_buffers_if_possible())
            return LT_PAUSE;
        decompress_and_copy_tile_data_to_vram(2, gUnknown_0861FD6C, 0, 0, 0);
        decompress_and_copy_tile_data_to_vram(2, gUnknown_0861FFF4, 0, 0, 1);
        CopyPaletteIntoBufferUnfaded(gUnknown_0861FD4C, 0x20, 0x20);
        return LT_INC_AND_PAUSE;
    case 2:
        if (free_temp_tile_data_buffers_if_possible())
            return LT_PAUSE;
        decompress_and_copy_tile_data_to_vram(3, gUnknown_0861FC98, 0, 0, 0);
        decompress_and_copy_tile_data_to_vram(3, gUnknown_0861FCAC, 0, 0, 1);
        CopyPaletteIntoBufferUnfaded(gUnknown_0861FC78, 0x30, 0x20);
        if (sub_81C9894() == 3 || sub_81C9894() == 4)
            sub_81CA850();
        return LT_INC_AND_PAUSE;
    case 3:
        if (free_temp_tile_data_buffers_if_possible())
            return LT_PAUSE;
        sub_81CA6E0();
        sub_81CA7D4();
        return LT_INC_AND_CONTINUE;
    case 4:
        sub_81C9FC4();
        return LT_INC_AND_CONTINUE;
    case 5:
        sub_81CA714();
        sub_81CA02C();
        sub_81CA640();
        sub_81CA0C8();
        return LT_INC_AND_PAUSE;
    case 6:
        if (sub_81CA7C4())
            return LT_PAUSE;
        return LT_INC_AND_CONTINUE;
    case 7:
        ShowBg(1);
        ShowBg(2);
        ShowBg(3);
        if (unk->field_00d)
            sub_81C7AC0(1);
        else
        {
            PlaySE(SE_PN_ON);
            sub_81C7AC0(3);
        }
        switch (sub_81C9894())
        {
        case 4:
            LoadLeftHeaderGfxForIndex(7);
            // fallthrough
        case 3:
            LoadLeftHeaderGfxForIndex(1);
            break;
        default:
            LoadLeftHeaderGfxForIndex(0);
            break;
        }
        return LT_INC_AND_PAUSE;
    case 8:
        if (IsPaletteFadeActive())
            return LT_PAUSE;
        switch (sub_81C9894())
        {
        case 4:
            sub_81C7FA0(7, FALSE, FALSE);
            // fallthrough
        case 3:
            sub_81C7FA0(1, FALSE, FALSE);
            break;
        default:
            sub_81C7FA0(0, FALSE, FALSE);
            break;
        }
        sub_81CA20C();
        titlescreen_0();
        return LT_INC_AND_CONTINUE;
    case 9:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9C6C(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81CAA3C();
        sub_81CA278();
        sub_81CA714();
        PlaySE(SE_SELECT);
        return LT_INC_AND_PAUSE;
    case 1:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81CA7C4())
            return LT_PAUSE;
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9CA8(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81CA9C8();
        sub_81CA2DC();
        sub_81C7FC4(0, 0);
        PlaySE(SE_SELECT);
        return LT_INC_AND_PAUSE;
    case 1:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        sub_81CA0C8();
        LoadLeftHeaderGfxForIndex(1);
        return LT_INC_AND_PAUSE;
    case 2:
        sub_81CA20C();
        sub_81C7FA0(1, FALSE, FALSE);
        sub_81CA818();
        sub_81CA714();
        return LT_INC_AND_PAUSE;
    case 3:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        if (sub_81CA89C())
            return LT_PAUSE;
        if (sub_81CA7C4())
            return LT_PAUSE;
        sub_81CA9D8();
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9D44(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81CA9C8();
        sub_81CA2DC();
        sub_81C7FC4(1, 0);
        return LT_INC_AND_PAUSE;
    case 1:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        sub_81CA0C8();
        LoadLeftHeaderGfxForIndex(0);
        return LT_INC_AND_PAUSE;
    case 2:
        sub_81CA20C();
        sub_81C7FA0(0, FALSE, FALSE);
        sub_81CA864();
        sub_81CA714();
        return LT_INC_AND_PAUSE;
    case 3:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        if (sub_81CA89C())
            return LT_PAUSE;
        if (sub_81CA7C4())
            return LT_PAUSE;
        sub_81CA9D8();
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9DD8(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81CA9C8();
        sub_81CA2DC();
        PlaySE(SE_SELECT);
        return LT_INC_AND_PAUSE;
    case 1:
        if (sub_81CA324())
            return LT_PAUSE;
        LoadLeftHeaderGfxForIndex(7);
        sub_81CA0C8();
        return LT_INC_AND_PAUSE;
    case 2:
        sub_81CA20C();
        sub_81C7FA0(7, FALSE, FALSE);
        sub_81CA714();
        return LT_INC_AND_PAUSE;
    case 3:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        if (sub_81CA89C())
            return LT_PAUSE;
        sub_81CA9D8();
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9E58(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81CA9C8();
        sub_81CA2DC();
        sub_81C7FC4(7, 0);
        return LT_INC_AND_PAUSE;
    case 1:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        sub_81CA0C8();
        return LT_INC_AND_PAUSE;
    case 2:
        sub_81CA20C();
        sub_81CA714();
        return LT_INC_AND_PAUSE;
    case 3:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81CA89C())
            return LT_PAUSE;
        sub_81CA9D8();
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9EC8(s32 state)
{
    switch (state)
    {
    case 0:
        PlaySE(SE_HAZURE);
        sub_81CA770();
        return LT_INC_AND_PAUSE;
    case 1:
        if (IsDma3ManagerBusyWithBgCopy())
            return LT_PAUSE;
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9EF8(s32 state)
{
    switch (state)
    {
    case 0:
        PlaySE(SE_SELECT);
        sub_81CA714();
        return LT_INC_AND_PAUSE;
    case 1:
        if (IsDma3ManagerBusyWithBgCopy())
            return LT_PAUSE;
        break;
    }
    return LT_FINISH;
}

static u32 sub_81C9F28(s32 state)
{
    switch (state)
    {
    case 0:
        sub_81C7BA4(sub_81C98C4());
        return LT_INC_AND_PAUSE;
    case 1:
        if (IsDma3ManagerBusyWithBgCopy_())
            return LT_PAUSE;
        sub_81C7880();
        sub_81CA9C8();
        sub_81CA2DC();
        switch (sub_81C9894())
        {
        case 4:
            sub_81C7FC4(7, FALSE);
            // fallthrough
        case 3:
            sub_81C7FC4(1, FALSE);
            break;
        default:
            sub_81C7FC4(0, FALSE);
            break;
        }
        PlaySE(SE_SELECT);
        return LT_INC_AND_PAUSE;
    case 2:
        if (sub_81CA324())
            return LT_PAUSE;
        if (sub_81C8010())
            return LT_PAUSE;
        sub_81C7AC0(0);
        return LT_INC_AND_PAUSE;
    case 3:
        if (IsPaletteFadeActive())
            return LT_PAUSE;
        break;
    }
    return LT_FINISH;
}

static void sub_81C9FC4(void)
{
    u32 i;

    for (i = 0; i < 2; i++)
        LoadCompressedSpriteSheet(&gUnknown_086201C4[i]);
    Pokenav_AllocAndLoadPalettes(gUnknown_086201D4);
}

static void sub_81C9FEC(void)
{
    FreeSpriteTilesByTag(3);
    FreeSpriteTilesByTag(1);
    FreeSpritePaletteByTag(4);
    FreeSpritePaletteByTag(5);
    FreeSpritePaletteByTag(6);
    FreeSpritePaletteByTag(7);
    FreeSpritePaletteByTag(8);
    FreeSpritePaletteByTag(3);
    sub_81CA094();
    sub_81CA698();
}

static void sub_81CA02C(void)
{
    s32 i, j;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    for (i = 0; i < 6; i++)
    {
        for (j = 0; j < 4; j++)
        {
            u8 spriteId = CreateSprite(&gUnknown_0862034C, 0x8c, 20 * i + 40, 3);
            unk->field_02c[i][j] = &gSprites[spriteId];
            gSprites[spriteId].pos2.x = 32 * j;
        }
    }
}

static void sub_81CA094(void)
{
    s32 i, j;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    for (i = 0; i < 6; i++)
    {
        for (j = 0; j < 4; j++)
        {
            FreeSpriteOamMatrix(unk->field_02c[i][j]);
            DestroySprite(unk->field_02c[i][j]);
        }
    }
}

static void sub_81CA0C8(void)
{
    s32 r0 = sub_81C9894();
    sub_81CA0EC(gUnknown_08620240[r0].unk4, gUnknown_08620240[r0].unk0, gUnknown_08620240[r0].unk2);
}

static void sub_81CA0EC(const u16 *const *a0, s32 a1, s32 a2)
{
    s32 i, j;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);
    s32 sp04 = GetSpriteTileStartByTag(3);

    for (i = 0; i < 6; i++)
    {
        if (*a0 != NULL)
        {
            for (j = 0; j < 4; j++)
            {
                unk->field_02c[i][j]->oam.tileNum = (*a0)[0] + sp04 + 8 * j;
                unk->field_02c[i][j]->oam.paletteNum = IndexOfSpritePaletteTag((*a0)[1] + 4);
                unk->field_02c[i][j]->invisible = TRUE;
                unk->field_02c[i][j]->pos1.y = a1;
                unk->field_02c[i][j]->pos1.x = 0x8c;
                unk->field_02c[i][j]->pos2.x = 32 * j;
            }
            unk->field_010[i] = TRUE;
        }
        else
        {
            for (j = 0; j < 4; j++)
            {
                unk->field_02c[i][j]->invisible = TRUE;
            }
            unk->field_010[i] = FALSE;
        }
        a0++;
        a1 += a2;
    }
}

static void sub_81CA20C(void)
{
    s32 i;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);
    s32 r8 = sub_81C98A4();
    s32 r7 = 0;
    s32 r2;

    for (i = 0; i < 6; i++)
    {
        if (unk->field_010[i])
        {
            if (r7++ == r8)
            {
                r2 = 0x82;
                unk->field_00b = i;
            }
            else
                r2 = 0x8c;
            sub_81CA35C(unk->field_02c[i], 0x100, r2, 0xC);
            sub_81CA448(unk->field_02c[i], FALSE);
        }
        else
            sub_81CA448(unk->field_02c[i], TRUE);
    }
}

static void sub_81CA278(void)
{
    s32 i;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);
    s32 r3 = sub_81C98A4();
    s32 r5;

    for (i = 0, r5 = 0; i < 6; i++)
    {
        if (unk->field_010[i])
        {
            if (r5 == r3)
            {
                r5 = i;
                break;
            }
            r5++;
        }
    }

    sub_81CA35C(unk->field_02c[unk->field_00b], 0x82, 0x8c, 0x4);
    sub_81CA35C(unk->field_02c[r5], 0x8c, 0x82, 0x4);
    unk->field_00b = r5;
}

static void sub_81CA2DC(void)
{
    s32 i;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    for (i = 0; i < 6; i++)
    {
        if (unk->field_010[i])
        {
            if (unk->field_00b != i)
                sub_81CA35C(unk->field_02c[i], 0x8C, 0x100, 0x8);
            else
                sub_81CA3B4(unk->field_02c[i]);
        }
    }
}

static bool32 sub_81CA324(void)
{
    s32 i;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);

    for (i = 0; i < 6; i++)
    {
        if (unk->field_02c[i][0]->callback != SpriteCallbackDummy)
            return TRUE;
    }

    if (unk->field_00c)
        return TRUE;

    return FALSE;
}

static void sub_81CA35C(struct Sprite ** sprites, s32 a1, s32 a2, s32 a3)
{
    s32 i;

    for (i = 0; i < 4; i++)
    {
        (*sprites)->pos1.x = a1;
        (*sprites)->data[0] = a3;
        (*sprites)->data[1] = 16 * (a2 - a1) / a3;
        (*sprites)->data[2] = 16 * a1;
        (*sprites)->data[7] = a2;
        (*sprites)->callback = sub_81CA474;
        sprites++;
    }
}

static void sub_81CA3B4(struct Sprite ** sprites)
{
    s32 i;
    struct Pokenav2Struct * unk = GetSubstructPtr(2);
    u8 taskId;

    for (i = 0; i < 4; i++)
    {
        (*sprites)->oam.objMode = ST_OAM_OBJ_BLEND;
        (*sprites)->oam.affineMode = ST_OAM_AFFINE_DOUBLE;
        (*sprites)->callback = sub_81CA4AC;
        (*sprites)->data[0] = 8;
        (*sprites)->data[1] = 0;
        (*sprites)->data[7] = i;
        InitSpriteAffineAnim(sprites[0]);
        StartSpriteAffineAnim(sprites[0], 0);
        sprites++;
    }

    SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0x10, 0x00));
    taskId = CreateTask(sub_81CA580, 3);
    gTasks[taskId].data[0] = 8;
    unk->field_00c++;
}

static void sub_81CA448(struct Sprite ** sprites, bool32 a1)
{
    s32 i;

    for (i = 0; i < 4; i++)
    {
        (*sprites)->invisible = a1;
        sprites++;
    }
}

static void sub_81CA474(struct Sprite * sprite)
{
    sprite->data[0]--;
    if (sprite->data[0] != -1)
    {
        sprite->data[2] += sprite->data[1];
        sprite->pos1.x = sprite->data[2] >> 4;
    }
    else
    {
        sprite->pos1.x = sprite->data[7];
        sprite->callback = SpriteCallbackDummy;
    }
}

static void sub_81CA4AC(struct Sprite * sprite)
{
    s32 r0;
    s32 r1;
    if (sprite->data[0] == 0)
    {
        if (sprite->data[1] == 0)
        {
            StartSpriteAffineAnim(sprite, 1);
            sprite->data[1]++;
            sprite->data[2] = 0x100;
            sprite->pos1.x += sprite->pos2.x;
            sprite->pos2.x = 0;
        }
        else
        {
            sprite->data[2] += 16;
            r0 = sprite->data[2];
            r1 = r0 >> 3;
            r1 = (r1 - 32) / 2;
            switch (sprite->data[7])
            {
            case 0:
                sprite->pos2.x = -r1 * 3;
                break;
            case 1:
                sprite->pos2.x = -r1;
                break;
            case 2:
                sprite->pos2.x = r1;
                break;
            case 3:
                sprite->pos2.x = r1 * 3;
                break;
            }
            if (sprite->affineAnimEnded)
            {
                sprite->invisible = TRUE;
                FreeOamMatrix(sprite->oam.matrixNum);
                CalcCenterToCornerVec(sprite, sprite->oam.shape, sprite->oam.size, 0);
                sprite->oam.affineMode = ST_OAM_AFFINE_OFF;
                sprite->oam.objMode = ST_OAM_OBJ_NORMAL;
                sprite->callback = SpriteCallbackDummy;
            }
        }
    }
    else
    {
        sprite->data[0]--;
    }
}

static void sub_81CA580(u8 taskId)
{
    s16 * data = gTasks[taskId].data;

    if (data[0] == 0)
    {
        switch (data[1])
        {
        case 0:
            data[2] = 16;
            data[3] = 0;
            SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_NONE | BLDCNT_TGT2_ALL);
            SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0x10, 0x00));
            data[1]++;
            break;
        case 1:
            if (data[4] & 1)
            {
                data[2] -= 3;
                if (data[2] < 0)
                    data[2] = 0;
            }
            else
            {
                data[3] += 3;
                if (data[3] > 16)
                    data[3] = 16;
            }
            SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(data[2], data[3]));
            data[4]++;
            if (data[4] == 12)
            {
                ((struct Pokenav2Struct *)GetSubstructPtr(2))->field_00c--;
                SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0x00, 0x10));
                DestroyTask(taskId);
            }
            break;
        }
    }
    else
        data[0]--;
}

static void sub_81CA640(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    u8 spriteId = CreateSprite(&gUnknown_0862036C, 0x10, 0x60, 4);
    ptr->field_028 = &gSprites[spriteId];
    if (sub_81C98D4())
        ptr->field_028->callback = sub_81CA6AC;
    else
        ptr->field_028->invisible = TRUE;
}

static void sub_81CA698(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    DestroySprite(ptr->field_028);
}

static void sub_81CA6AC(struct Sprite * sprite)
{
    sprite->data[0]++;
    if (sprite->data[0] > 8)
    {
        sprite->data[0] = 0;
        sprite->invisible ^= 1;
    }
}

static void sub_81CA6E0(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);

    ptr->field_008 = AddWindow(&gUnknown_086202CC);
    PutWindowTilemap(ptr->field_008);
    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
    CopyWindowToVram(ptr->field_008, 3);
}

static void sub_81CA714(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    int i = sub_81C98B4();
    const u8 * s = gUnknown_086202D4[i];
    u32 width = GetStringWidth(1, s, -1);
    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
    AddTextPrinterParameterized3(ptr->field_008, 1, (192 - width) / 2, 1, gUnknown_0862030C, 0, s);
}


static void sub_81CA770(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    const u8 * s = gText_NoRibbonWinners;
    u32 width = GetStringWidth(1, s, -1);
    FillWindowPixelBuffer(ptr->field_008, PIXEL_FILL(6));
    AddTextPrinterParameterized3(ptr->field_008, 1, (192 - width) / 2, 1, gUnknown_0862030F, 0, s);
}

static bool32 sub_81CA7C4(void)
{
    return IsDma3ManagerBusyWithBgCopy();
}

static void sub_81CA7D4(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    ptr->field_00a = CreateTask(sub_81CA808, 2);
}

static void sub_81CA7F4(void)
{
    struct Pokenav2Struct * ptr = GetSubstructPtr(2);
    DestroyTask(ptr->field_00a);
}

static void sub_81CA808(u8 taskId)
{
    ChangeBgX(3, 0x80, 1);
}

static void sub_81CA818(void)
{
    u8 taskId = CreateTask(sub_81CA8B0, 3);
    SetWordTaskArg(taskId, 1, (uintptr_t)(gUnknown_0861FC78 + 1));
    SetWordTaskArg(taskId, 3, (uintptr_t)(gUnknown_0861FC78 + 7));
}

static void sub_81CA850(void)
{
    CopyPaletteIntoBufferUnfaded(gUnknown_0861FC78 + 7, 0x31, 4);
}

static void sub_81CA864(void)
{
    u8 taskId = CreateTask(sub_81CA8B0, 3);
    SetWordTaskArg(taskId, 1, (uintptr_t)(gUnknown_0861FC78 + 7));
    SetWordTaskArg(taskId, 3, (uintptr_t)(gUnknown_0861FC78 + 1));
}

static bool32 sub_81CA89C(void)
{
    return FuncIsActiveTask(sub_81CA8B0);
}

static void sub_81CA8B0(u8 taskId)
{
    u16 sp8[2];
    s16 * data = gTasks[taskId].data;
    const u16 * pal1 = (const u16 *)GetWordTaskArg(taskId, 1);
    const u16 * pal2 = (const u16 *)GetWordTaskArg(taskId, 3);

    sub_81C79BC(pal1, pal2, 2, 12, ++data[0], sp8);
    LoadPalette(sp8, 0x31, 4);
    if (data[0] == 12)
        DestroyTask(taskId);
}

static void sub_81CA914(void)
{
    TransferPlttBuffer();
    LoadOam();
    ProcessSpriteCopyRequests();
    ScanlineEffect_InitHBlankDmaTransfer();
}

static void titlescreen_0(void) // almost definitely the wrong name
{
    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_OBJ | BLDCNT_EFFECT_LIGHTEN);
    SetGpuReg(REG_OFFSET_BLDY, 0);
    SetGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON);
    SetGpuRegBits(REG_OFFSET_WININ, 0x3F);
    SetGpuRegBits(REG_OFFSET_WINOUT, 0x1F);
    SetGpuRegBits(REG_OFFSET_WIN0V, 0xA0);
    ScanlineEffect_Stop();
    sub_81CAA3C();
    ScanlineEffect_SetParams(gUnknown_08620384);
    SetVBlankCallback_(sub_81CA914);
    CreateTask(sub_81CA9EC, 3);
}

static void sub_81CA994(void)
{
    SetGpuReg(REG_OFFSET_BLDCNT, 0);
    ClearGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON);
    ScanlineEffect_Stop();
    DestroyTask(FindTaskIdByFunc(sub_81CA9EC));
    SetPokenavVBlankCallback();
}

static void sub_81CA9C8(void)
{
    SetGpuReg(REG_OFFSET_BLDCNT, 0);
}

static void sub_81CA9D8(void)
{
    sub_81CAA3C();
    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT1_OBJ | BLDCNT_EFFECT_LIGHTEN);
}

static void sub_81CA9EC(u8 taskId)
{
    s16 * data = gTasks[taskId].data;
    data[0]++;
    if (data[0] > 0)
    {
        data[0] = 0;
        data[1] += 3;
        data[1] &= 0x7F;
        SetGpuReg(REG_OFFSET_BLDY, gSineTable[data[1]] >> 5);
    }
}

static void sub_81CAA3C(void)
{
    int i = sub_81C9894();
    int j = sub_81C98A4();
    int r4 = gUnknown_08620240[i].unk2 * j + gUnknown_08620240[i].unk0 - 8;
    CpuFill16(0, gScanlineEffectRegBuffers[0], 0x140);
    CpuFill16(0, gScanlineEffectRegBuffers[1], 0x140);
    CpuFill16(RGB(16, 23, 28), &gScanlineEffectRegBuffers[0][r4], 0x20);
    CpuFill16(RGB(16, 23, 28), &gScanlineEffectRegBuffers[1][r4], 0x20);
}

void sub_81CAADC(void)
{
    sub_81CA9C8();
}