starter choose file is decompiled

3 files changed, 394 insertions, 3 deletions

diff --git a/src/mail.c b/src/mail.c
index 1060d73bd..1ceb1be1a 100644
--- a/src/mail.c
+++ b/src/mail.c
@@ -386,7 +386,7 @@ bool8 sub_81215EC(void)
             CopyBgTilemapBufferToVram(2);
             break;
         case 12:
-            LoadPalette(sub_8098C64(), 240, 32);
+            LoadPalette(GetOverworldTextboxPalettePtr(), 240, 32);
             gPlttBufferUnfaded[250] = gUnknown_0859F2B8[gUnknown_0203A134->mailType].color10;
             gPlttBufferFaded[250] = gUnknown_0859F2B8[gUnknown_0203A134->mailType].color10;
             gPlttBufferUnfaded[251] = gUnknown_0859F2B8[gUnknown_0203A134->mailType].color12;
diff --git a/src/starter_choose.c b/src/starter_choose.c
new file mode 100644
index 000000000..c730e0978
--- /dev/null
+++ b/src/starter_choose.c
@@ -0,0 +1,391 @@
+#include "global.h"
+#include "starter_choose.h"
+#include "palette.h"
+#include "sprite.h"
+#include "pokemon.h"
+#include "task.h"
+#include "bg.h"
+#include "gpu_regs.h"
+#include "main.h"
+#include "window.h"
+#include "text.h"
+#include "decompress.h"
+#include "menu.h"
+#include "sound.h"
+#include "songs.h"
+#include "event_data.h"
+#include "pokedex.h"
+#include "data2.h"
+#include "international_string_util.h"
+#include "trig.h"
+
+#define STARTER_MON_COUNT   3
+
+// Position of the sprite of the selected starter Pokemon
+#define STARTER_PKMN_POS_X 120
+#define STARTER_PKMN_POS_Y 64
+
+extern u16 sStarterChooseWindowId;
+
+// graphics
+extern const u32 gBirchHelpGfx[];
+extern const u32 gBirchBagTilemap[];
+extern const u32 gBirchGrassTilemap[];
+extern const u16 gBirchBagGrassPal[];
+
+// text
+extern const u8 gText_BirchInTrouble[];
+extern const u8 gText_ConfirmStarterChoice[];
+
+extern const u16 sStarterMons[STARTER_MON_COUNT];
+extern const struct BgTemplate gUnknown_085B1E00[3];
+extern const struct WindowTemplate gUnknown_085B1DCC[];
+extern const struct WindowTemplate gUnknown_085B1DDC;
+extern const struct CompressedSpriteSheet gUnknown_085B1ED8[];
+extern const struct CompressedSpriteSheet gUnknown_085B1EE8[];
+extern const struct SpritePalette gUnknown_085B1EF8[];
+extern const struct SpriteTemplate sSpriteTemplate_PokeBall;
+extern const struct SpriteTemplate sSpriteTemplate_Hand;
+extern const struct SpriteTemplate gUnknown_085B1F40;
+extern const union AffineAnimCmd *const gUnknown_085B1ED0;
+extern const u8 sPokeballCoords[STARTER_MON_COUNT][2];
+extern const struct WindowTemplate gUnknown_085B1DE4;
+extern const u8 gStarterChoose_LabelCoords[][2];
+extern const u8 gUnknown_085B1E0C[];
+extern const u8 gUnknown_085B1E28[][2];
+
+extern void sub_809882C(u8, u16, u8);
+extern void remove_some_task(void);
+extern void clear_scheduled_bg_copies_to_vram(void);
+extern void dp13_810BB8C(void);
+extern void do_scheduled_bg_tilemap_copies_to_vram(void);
+extern u16 sub_818D820(u16);
+extern const u16 *GetOverworldTextboxPalettePtr(void);
+extern u8 sub_818D3E4(u16 species, u32 trainerId, u32 personality, u8 flags, s16 x, s16 y, u8, u16);
+
+// this file's functions
+static void MainCallback2_StarterChoose(void);
+static void sub_8134604(void);
+static void Task_StarterChoose1(u8 taskId);
+static void Task_StarterChoose2(u8 taskId);
+static void Task_StarterChoose3(u8 taskId);
+static void Task_StarterChoose4(u8 taskId);
+static void Task_StarterChoose5(u8 taskId);
+static void Task_StarterChoose6(u8 taskId);
+static void Task_MoveStarterChooseCursor(u8 taskId);
+static void sub_8134668(u8 taskId);
+static void CreateStarterPokemonLabel(u8 selection);
+static u8 CreatePokemonFrontSprite(u16 species, u8 x, u8 y);
+static void StarterPokemonSpriteCallback(struct Sprite *sprite);
+
+u16 GetStarterPokemon(u16 chosenStarterId)
+{
+    if (chosenStarterId > STARTER_MON_COUNT)
+        chosenStarterId = 0;
+    return sStarterMons[chosenStarterId];
+}
+
+static void VblankCB_StarterChoose(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+#define tStarterSelection   data[0]
+#define tPkmnSpriteId       data[1]
+#define tCircleSpriteId     data[2]
+
+void CB2_ChooseStarter(void)
+{
+    u16 savedIme;
+    u8 taskId;
+    u8 spriteId;
+
+    SetVBlankCallback(NULL);
+
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_BG3CNT, 0);
+    SetGpuReg(REG_OFFSET_BG2CNT, 0);
+    SetGpuReg(REG_OFFSET_BG1CNT, 0);
+    SetGpuReg(REG_OFFSET_BG0CNT, 0);
+
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgY(1, 0, 0);
+    ChangeBgX(2, 0, 0);
+    ChangeBgY(2, 0, 0);
+    ChangeBgX(3, 0, 0);
+    ChangeBgY(3, 0, 0);
+
+    DmaFill16(3, 0, VRAM, VRAM_SIZE);
+    DmaFill32(3, 0, OAM, OAM_SIZE);
+    DmaFill16(3, 0, PLTT, PLTT_SIZE);
+
+    LZ77UnCompVram(&gBirchHelpGfx, (void *)VRAM);
+    LZ77UnCompVram(&gBirchBagTilemap, (void *)(VRAM + 0x3000));
+    LZ77UnCompVram(&gBirchGrassTilemap, (void *)(VRAM + 0x3800));
+
+    ResetBgsAndClearDma3BusyFlags(0);
+    InitBgsFromTemplates(0, gUnknown_085B1E00, ARRAY_COUNT(gUnknown_085B1E00));
+    InitWindows(gUnknown_085B1DCC);
+
+    DeactivateAllTextPrinters();
+    sub_809882C(0, 0x2A8, 0xD0);
+    clear_scheduled_bg_copies_to_vram();
+    remove_some_task();
+    ResetTasks();
+    ResetSpriteData();
+    ResetPaletteFade();
+    FreeAllSpritePalettes();
+    dp13_810BB8C();
+
+    LoadPalette(GetOverworldTextboxPalettePtr(), 0xE0, 0x20);
+    LoadPalette(gBirchBagGrassPal, 0, 0x40);
+    LoadCompressedObjectPic(&gUnknown_085B1ED8[0]);
+    LoadCompressedObjectPic(&gUnknown_085B1EE8[0]);
+    LoadSpritePalettes(gUnknown_085B1EF8);
+    BeginNormalPaletteFade(-1, 0, 0x10, 0, 0);
+
+    EnableInterrupts(DISPSTAT_VBLANK);
+    SetVBlankCallback(VblankCB_StarterChoose);
+    SetMainCallback2(MainCallback2_StarterChoose);
+
+    SetGpuReg(REG_OFFSET_WININ, 0x3F);
+    SetGpuReg(REG_OFFSET_WINOUT, 0x1F);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0xFE);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 7);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON | DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+
+    ShowBg(0);
+    ShowBg(2);
+    ShowBg(3);
+
+    taskId = CreateTask(Task_StarterChoose1, 0);
+    gTasks[taskId].tStarterSelection = 1;
+
+    // Create hand sprite
+    spriteId = CreateSprite(&sSpriteTemplate_Hand, 120, 56, 2);
+    gSprites[spriteId].data0 = taskId;
+
+    // Create three Pokeball sprites
+    spriteId = CreateSprite(&sSpriteTemplate_PokeBall, sPokeballCoords[0][0], sPokeballCoords[0][1], 2);
+    gSprites[spriteId].data0 = taskId;
+    gSprites[spriteId].data1 = 0;
+
+    spriteId = CreateSprite(&sSpriteTemplate_PokeBall, sPokeballCoords[1][0], sPokeballCoords[1][1], 2);
+    gSprites[spriteId].data0 = taskId;
+    gSprites[spriteId].data1 = 1;
+
+    spriteId = CreateSprite(&sSpriteTemplate_PokeBall, sPokeballCoords[2][0], sPokeballCoords[2][1], 2);
+    gSprites[spriteId].data0 = taskId;
+    gSprites[spriteId].data1 = 2;
+
+    sStarterChooseWindowId = 0xFF;
+}
+
+static void MainCallback2_StarterChoose(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    do_scheduled_bg_tilemap_copies_to_vram();
+    UpdatePaletteFade();
+}
+
+static void Task_StarterChoose1(u8 taskId)
+{
+    CreateStarterPokemonLabel(gTasks[taskId].tStarterSelection);
+    SetWindowBorderStyle(0, FALSE, 0x2A8, 0xD);
+    PrintTextOnWindow(0, 1, gText_BirchInTrouble, 0, 1, 0, NULL);
+    PutWindowTilemap(0);
+    schedule_bg_copy_tilemap_to_vram(0);
+    gTasks[taskId].func = Task_StarterChoose2;
+}
+
+static void Task_StarterChoose2(u8 taskId)
+{
+    u8 selection = gTasks[taskId].tStarterSelection;
+
+    if (gMain.newKeys & A_BUTTON)
+    {
+        u8 spriteId;
+
+        sub_8134604();
+
+        // Create white circle background
+        spriteId = CreateSprite(&gUnknown_085B1F40, sPokeballCoords[selection][0], sPokeballCoords[selection][1], 1);
+        gTasks[taskId].tCircleSpriteId = spriteId;
+
+        // Create Pokemon sprite
+        spriteId = CreatePokemonFrontSprite(GetStarterPokemon(gTasks[taskId].tStarterSelection), sPokeballCoords[selection][0], sPokeballCoords[selection][1]);
+        gSprites[spriteId].affineAnims = &gUnknown_085B1ED0;
+        gSprites[spriteId].callback = StarterPokemonSpriteCallback;
+
+        gTasks[taskId].tPkmnSpriteId = spriteId;
+        gTasks[taskId].func = Task_StarterChoose3;
+    }
+    else if ((gMain.newKeys & DPAD_LEFT) && selection > 0)
+    {
+        gTasks[taskId].tStarterSelection--;
+        gTasks[taskId].func = Task_MoveStarterChooseCursor;
+    }
+    else if ((gMain.newKeys & DPAD_RIGHT) && selection < (STARTER_MON_COUNT - 1))
+    {
+        gTasks[taskId].tStarterSelection++;
+        gTasks[taskId].func = Task_MoveStarterChooseCursor;
+    }
+}
+
+static void Task_StarterChoose3(u8 taskId)
+{
+    if (gSprites[gTasks[taskId].tCircleSpriteId].affineAnimEnded &&
+      gSprites[gTasks[taskId].tCircleSpriteId].pos1.x == STARTER_PKMN_POS_X &&
+      gSprites[gTasks[taskId].tCircleSpriteId].pos1.y == STARTER_PKMN_POS_Y)
+    {
+        gTasks[taskId].func = Task_StarterChoose4;
+    }
+}
+
+static void Task_StarterChoose4(u8 taskId)
+{
+    PlayCry1(GetStarterPokemon(gTasks[taskId].tStarterSelection), 0);
+    FillWindowPixelBuffer(0, 0x11);
+    PrintTextOnWindow(0, 1, gText_ConfirmStarterChoice, 0, 1, 0, NULL);
+    schedule_bg_copy_tilemap_to_vram(0);
+    CreateYesNoMenu(&gUnknown_085B1DDC, 0x2A8, 0xD, 0);
+    gTasks[taskId].func = Task_StarterChoose5;
+}
+
+static void Task_StarterChoose5(u8 taskId)
+{
+    u8 spriteId;
+
+    switch (sub_8198C58())
+    {
+    case 0:  // YES
+        // Return the starter choice and exit.
+        gScriptResult = gTasks[taskId].tStarterSelection;
+        dp13_810BB8C();
+        SetMainCallback2(gMain.savedCallback);
+        break;
+    case 1:  // NO
+    case -1: // B button
+        PlaySE(SE_SELECT);
+        spriteId = gTasks[taskId].tPkmnSpriteId;
+        FreeOamMatrix(gSprites[spriteId].oam.matrixNum);
+        sub_818D820(spriteId);
+
+        spriteId = gTasks[taskId].tCircleSpriteId;
+        FreeOamMatrix(gSprites[spriteId].oam.matrixNum);
+        DestroySprite(&gSprites[spriteId]);
+        gTasks[taskId].func = Task_StarterChoose6;
+        break;
+    }
+}
+
+static void Task_StarterChoose6(u8 taskId)
+{
+    gTasks[taskId].func = Task_StarterChoose1;
+}
+
+static void CreateStarterPokemonLabel(u8 selection)
+{
+    u8 text[32];
+    struct WindowTemplate winTemplate;
+    const u8 *speciesName;
+    s32 width;
+    u8 labelLeft, labelRight, labelTop, labelBottom;
+
+    u16 species = GetStarterPokemon(selection);
+    CopyMonCategoryText(SpeciesToNationalPokedexNum(species), text);
+    speciesName = gSpeciesNames[species];
+
+    winTemplate = gUnknown_085B1DE4;
+    winTemplate.tilemapLeft = gStarterChoose_LabelCoords[selection][0];
+    winTemplate.tilemapTop = gStarterChoose_LabelCoords[selection][1];
+
+    sStarterChooseWindowId = AddWindow(&winTemplate);
+    FillWindowPixelBuffer(sStarterChooseWindowId, 0);
+
+    width = GetStringCenterAlignXOffset(7, text, 0x68);
+    box_print(sStarterChooseWindowId, 7, width, 1, gUnknown_085B1E0C, 0, text);
+
+    width = GetStringCenterAlignXOffset(1, speciesName, 0x68);
+    box_print(sStarterChooseWindowId, 1, width, 0x11, gUnknown_085B1E0C, 0, speciesName);
+
+    PutWindowTilemap(sStarterChooseWindowId);
+    schedule_bg_copy_tilemap_to_vram(0);
+
+    labelLeft = gStarterChoose_LabelCoords[selection][0] * 8 - 4;
+    labelRight = (gStarterChoose_LabelCoords[selection][0] + 13) * 8 + 4;
+    labelTop = gStarterChoose_LabelCoords[selection][1] * 8;
+    labelBottom = (gStarterChoose_LabelCoords[selection][1] + 4) * 8;
+    SetGpuReg(REG_OFFSET_WIN0H, WIN_RANGE(labelLeft, labelRight));
+    SetGpuReg(REG_OFFSET_WIN0V, WIN_RANGE(labelTop, labelBottom));
+}
+
+static void sub_8134604(void)
+{
+    FillWindowPixelBuffer(sStarterChooseWindowId, 0);
+    ClearWindowTilemap(sStarterChooseWindowId);
+    RemoveWindow(sStarterChooseWindowId);
+    sStarterChooseWindowId = 0xFF;
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    schedule_bg_copy_tilemap_to_vram(0);
+}
+
+static void Task_MoveStarterChooseCursor(u8 taskId)
+{
+    sub_8134604();
+    gTasks[taskId].func = sub_8134668;
+}
+
+static void sub_8134668(u8 taskId)
+{
+    CreateStarterPokemonLabel(gTasks[taskId].tStarterSelection);
+    gTasks[taskId].func = Task_StarterChoose2;
+}
+
+static u8 CreatePokemonFrontSprite(u16 species, u8 x, u8 y)
+{
+    u8 spriteId;
+
+    spriteId = sub_818D3E4(species, 8, 0, 1, x, y, 0xE, 0xFFFF);
+    gSprites[spriteId].oam.priority = 0;
+    return spriteId;
+}
+
+static void sub_81346DC(struct Sprite *sprite)
+{
+    sprite->pos1.x = gUnknown_085B1E28[gTasks[sprite->data0].tStarterSelection][0];
+    sprite->pos1.y = gUnknown_085B1E28[gTasks[sprite->data0].tStarterSelection][1];
+    sprite->pos2.y = Sin(sprite->data1, 8);
+    sprite->data1 = (u8)(sprite->data1) + 4;
+}
+
+static void sub_813473C(struct Sprite *sprite)
+{
+    if (gTasks[sprite->data0].tStarterSelection == sprite->data1)
+        StartSpriteAnimIfDifferent(sprite, 1);
+    else
+        StartSpriteAnimIfDifferent(sprite, 0);
+}
+
+static void StarterPokemonSpriteCallback(struct Sprite *sprite)
+{
+    //Move sprite to upper center of screen
+    if (sprite->pos1.x > STARTER_PKMN_POS_X)
+        sprite->pos1.x -= 4;
+    if (sprite->pos1.x < STARTER_PKMN_POS_X)
+        sprite->pos1.x += 4;
+    if (sprite->pos1.y > STARTER_PKMN_POS_Y)
+        sprite->pos1.y -= 2;
+    if (sprite->pos1.y < STARTER_PKMN_POS_Y)
+        sprite->pos1.y += 2;
+}
diff --git a/src/text_window.c b/src/text_window.c
index 55aedf688..336536c04 100644
--- a/src/text_window.c
+++ b/src/text_window.c
@@ -23,7 +23,7 @@ const struct TilesPal* sub_8098758(u8 id)
 void copy_textbox_border_tile_patterns_to_vram(u8 windowId, u16 destOffset, u8 palOffset)
 {
     LoadBgTiles(GetWindowAttribute(windowId, WINDOW_PRIORITY), gUnknown_08DDD748, 0x1C0, destOffset);
-    LoadPalette(sub_8098C64(), palOffset, 0x20);
+    LoadPalette(GetOverworldTextboxPalettePtr(), palOffset, 0x20);
 }
 
 void box_border_load_tiles_and_pal(u8 windowId, u16 destOffset, u8 palOffset)
@@ -113,7 +113,7 @@ const u16* stdpal_get(u8 id)
     return &gUnknown_0851017C[id];
 }
 
-const u16* sub_8098C64(void)
+const u16* GetOverworldTextboxPalettePtr(void)
 {
     return gUnknown_08DDD728;
 }