Merge pull request #8 from camthesaxman/decompile-options

decompile field_select.s and start decompiling options.s

1 files changed, 500 insertions, 0 deletions

diff --git a/src/options.c b/src/options.c
new file mode 100644
index 0000000..cd02b94
--- /dev/null
+++ b/src/options.c
@@ -0,0 +1,500 @@
+#include "global.h"
+#include "m4a.h"
+#include "main.h"
+#include "titlescreen.h"
+
+struct OptionsData
+{
+    s16 unk0;
+    u16 unk2;
+    u16 unk4;
+    u16 unk6;
+    s16 unk8;
+    s16 unkA;
+    u16 unkC;
+    s16 unkE;
+    s16 unk10;
+    u8 unk12;
+    u8 unk13;
+    u8 unk14;
+    u8 unk15;
+    u8 unk16;
+    u8 unk17;
+    s16 unk18;
+    u8 unk1A[6];
+    s16 unk20;
+    u16 unk22;
+    s16 unk24[2];
+    u16 unk28;
+    u8 unk2A;
+    s8 unk2B;
+    s8 unk2C;
+    u8 unk2D;
+    s8 unk2E;
+    u8 unk2F;
+    u8 unk30;
+};
+
+extern struct OptionsData gOptionsData;
+
+void OptionsMain(void)
+{
+    gUnknown_08527F08[gMain.subState]();
+}
+
+extern const u16 gUnknown_0852B468[];
+extern const u8 gUnknown_08528828[];
+extern const u8 gUnknown_0852A848[];
+extern const u8 gUnknown_08528028[];
+extern const u8 gUnknown_0852A048[];
+
+void sub_51240(void)
+{
+    ResetSomeGraphicsRelatedStuff();
+
+    REG_DISPCNT = 0x1080;
+    REG_BG0CNT = 4;
+    REG_DISPCNT |= 0x100;
+    REG_BG1CNT = 0x109;
+    REG_DISPCNT |= 0x200;
+
+    gMain.unk16 = REG_DISPCNT;
+
+    DmaCopy16(3, gUnknown_0852B468, (void *)PLTT, 0x200);
+    DmaCopy16(3, gUnknown_08528828, (void *)(VRAM + 0x4000), 0x1800);
+    DmaCopy16(3, gUnknown_0852A848, (void *)(VRAM + 0x8000), 0xC00);
+    DmaCopy16(3, gUnknown_08528028, gUnknown_03005C00, 0x800);
+    DmaCopy16(3, gUnknown_03005C00, (void *)VRAM, 0x800);
+
+    if (gGameBoyPlayerEnabled != 1)
+    {
+         sub_1068C(0x12, 4, 2, 1, 2);
+         sub_1068C(0x12, 5, 3, 2, 2);
+    }
+
+    DmaCopy16(3, gUnknown_03005C00, (void *)VRAM, 0x800);
+    DmaCopy16(3, gUnknown_0852A048, (void *)(VRAM + 0x800), 0x800);
+    DmaCopy16(3, gGBAButtonIcons_Pals, (void *)(PLTT + 0x200), 0x60);
+    DmaCopy16(3, gOptionsSprites_Gfx, (void *)(VRAM + 0x10000), 0x2020);
+	sub_513B8();
+	sub_51C9C();
+	m4aMPlayAllStop();
+	sub_CBC();
+	sub_24C();
+	sub_10C0();
+
+    gMain.subState++;
+}
+
+void sub_513B8(void)
+{
+    int i;
+    int j;
+
+    gOptionsData.unk0 = 0;
+    gOptionsData.unk2 = 0;
+    gOptionsData.unk4 = 0;
+    gOptionsData.unk6 = 1;
+    gOptionsData.unk8 = 0;
+    gOptionsData.unkA = 0;
+    gOptionsData.unkC = gMain_saveData.unk143;
+    gOptionsData.unkE = 0;
+    gOptionsData.unk10 = 0;
+    gOptionsData.unk12 = 0;
+    gOptionsData.unk13 = 0;
+    gOptionsData.unk14 = 1;
+    gOptionsData.unk15 = 0;
+    gOptionsData.unk16 = 0;
+    gOptionsData.unk17 = 1;
+    gOptionsData.unk18 = 0;
+    for (i = 0; i < 6; i++)
+        gOptionsData.unk1A[i] = 0;
+    gOptionsData.unk20 = 0;
+    gOptionsData.unk22 = 0;
+    for (i = 0; i < 2; i++)
+        gOptionsData.unk24[i] = 10;
+    gOptionsData.unk28 = 0;
+    for (i = 0; i < 4; i++)
+    {
+        for (j = 0; j < 10; j++)
+            gUnknown_02031AF0[i][j] = gUnknown_08527ED6[i][j];
+    }
+    sub_52528();
+    if (gGameBoyPlayerEnabled == 1)
+    {
+        gOptionsData.unk2A = gMain_saveData.unk141;
+        gMain_saveData.unk141 = 1;
+    }
+    else
+    {
+        gOptionsData.unk2A = 0;
+        gMain_saveData.unk141 = 0;
+    }
+    gOptionsData.unk2E = 0;
+    gOptionsData.unk2B = 0;
+    gOptionsData.unk2C = 0;
+    gOptionsData.unk2D = 0;
+    gOptionsData.unk2F = 0;
+    gOptionsData.unk30 = 0;
+}
+
+void sub_514B8(void)
+{
+    s16 r4;
+
+    sub_51C9C();
+    switch (gOptionsData.unk0)
+    {
+    case 0:
+        if (gMain.newKeys & 0x40)
+        {
+            if (gOptionsData.unkA != 0xD)
+            {
+                if (gOptionsData.unkA == 0xE)
+                {
+                    m4aSongNumStart(0x67);
+                    gOptionsData.unkA = 0xD;
+                }
+                else if (gOptionsData.unkA > 0)
+                {
+                    m4aSongNumStart(0x67);
+                    gOptionsData.unkA--;
+                }
+            }
+        }
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gOptionsData.unkA < 6)
+            {
+                m4aSongNumStart(0x67);
+                gOptionsData.unkA++;
+            }
+            else if (gOptionsData.unkA == 0xD)
+            {
+                m4aSongNumStart(0x67);
+                gOptionsData.unkA = 0xE;
+            }
+            else if (gOptionsData.unkA == 0xE)
+            {
+                m4aSongNumStart(0x67);
+                gOptionsData.unkA = 2;
+            }
+        }
+        if ((gMain.newKeys & 0x10) && gGameBoyPlayerEnabled == 1 && (u16)gOptionsData.unkA < 2)
+        {
+            m4aSongNumStart(0x67);
+            gOptionsData.unkA += 0xD;
+        }
+        if ((gMain.newKeys & 0x20) && gGameBoyPlayerEnabled == 1 && (u16)(gOptionsData.unkA - 13) < 2)
+        {
+            m4aSongNumStart(0x67);
+            gOptionsData.unkA -= 0xD;
+        }
+        if (gMain.newKeys & 1)
+        {
+            switch (gOptionsData.unkA)
+            {
+            case 0:
+                m4aSongNumStart(0x65);
+                gOptionsData.unk0 = 1;
+                gOptionsData.unk18 = 0;
+                gOptionsData.unk30 = 1;
+                if (gOptionsData.unk2E == 1)
+                {
+                    gOptionsData.unk2B = 0;
+                    gOptionsData.unk2D = 0;
+                    gOptionsData.unk2C = 0;
+                    gOptionsData.unk2E = 0;
+                }
+                break;
+            case 1:
+                m4aSongNumStart(0x65);
+                gOptionsData.unk0 = 2;
+                gOptionsData.unk18 = 0;
+                gOptionsData.unk30 = 1;
+                if (gOptionsData.unk2E == 1)
+                {
+                    gOptionsData.unk2B = 0;
+                    gOptionsData.unk2D = 0;
+                    gOptionsData.unk2C = 0;
+                    gOptionsData.unk2E = 0;
+                }
+                break;
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+                m4aSongNumStart(0x65);
+                gOptionsData.unkC = gOptionsData.unkA - 2;
+                gMain_saveData.unk143 = gOptionsData.unkC;
+                break;
+            case 6:
+                m4aSongNumStart(0x65);
+                gOptionsData.unkC = gOptionsData.unkA - 2;
+                gMain_saveData.unk143 = gOptionsData.unkC;
+                gOptionsData.unkA = 7;
+                gOptionsData.unk0 = 3;
+                break;
+            case 14:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    gOptionsData.unk2D = 0;
+                    if (gOptionsData.unk2E == 1)
+                        gOptionsData.unk2E = 0;
+                    gOptionsData.unk2B = 0;
+                    gOptionsData.unk2C = 0;
+                    gOptionsData.unk2A = 0;
+                }
+                break;
+            case 13:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    sub_11B0(11);
+                    if (gOptionsData.unk2E == 0)
+                        gOptionsData.unk2E = 1;
+
+                    gOptionsData.unk2B = 0;
+                    gOptionsData.unk2C = 0;
+                    gOptionsData.unk2A = 1;
+                }
+                break;
+            }
+        }
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gMain.subState++;
+            sub_525CC(gMain_saveData.unk143);
+
+        }
+        if (!(gMain.frameCount & 7))
+            gOptionsData.unk2 = 1 - gOptionsData.unk2;
+        break;
+    case 1:
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gOptionsData.unk18 == 0)
+            {
+                gOptionsData.unkE--;
+                gOptionsData.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gOptionsData.unk18 == 0)
+            {
+                gOptionsData.unkE++;
+                gOptionsData.unk18 = 10;
+            }
+        }
+        if (gMain.newKeys & 0x40)
+            gOptionsData.unkE += 10;
+        else if (gMain.newKeys & 0x80)
+            gOptionsData.unkE -= 10;
+        if (gOptionsData.unkE < 0)
+            gOptionsData.unkE = 33;
+        if (gOptionsData.unkE > 33)
+            gOptionsData.unkE = 0;
+
+        r4 = gOptionsData.unkE + 1;
+        gOptionsData.unk12 = r4 / 100;
+        r4 %= 100;
+        gOptionsData.unk13 = r4 / 10;
+        gOptionsData.unk14 = r4 % 10;
+        if (gMain.newKeys & 1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D22[gOptionsData.unkE]);
+        }
+        else if (gMain.newKeys & 2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gOptionsData.unk4 = 0;
+            gOptionsData.unk30 = 0;
+            gOptionsData.unk0 = 0;
+        }
+        if (!(gMain.frameCount & 7))
+            gOptionsData.unk4 = 1 - gOptionsData.unk4;
+        if (gOptionsData.unk18 > 0)
+            gOptionsData.unk18--;
+        break;
+    case 2:
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gOptionsData.unk18 == 0)
+            {
+                gOptionsData.unk10--;
+                gOptionsData.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gOptionsData.unk18 == 0)
+            {
+                gOptionsData.unk10++;
+                gOptionsData.unk18 = 10;
+            }
+        }
+        if (gMain.newKeys & 0x40)
+            gOptionsData.unk10 += 10;
+        else if (gMain.newKeys & 0x80)
+            gOptionsData.unk10 -= 10;
+        if (gOptionsData.unk10 < 0)
+            gOptionsData.unk10 = 0xB7;
+        if (gOptionsData.unk10 > 0xB7)
+            gOptionsData.unk10 = 0;
+
+        r4 = gOptionsData.unk10 + 1;
+        gOptionsData.unk15 = r4 / 100;
+        r4 %= 100;
+        gOptionsData.unk16 = r4 / 10;
+        gOptionsData.unk17 = r4 % 10;
+        if (gMain.newKeys & 0x1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D66[gOptionsData.unk10]);
+        }
+        else if (gMain.newKeys & 0x2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gOptionsData.unk4 = 0;
+            gOptionsData.unk30 = 0;
+            gOptionsData.unk0 = 0;
+        }
+        if (!(gMain.frameCount & 7))
+            gOptionsData.unk4 = 1 - gOptionsData.unk4;
+        if (gOptionsData.unk18 > 0)
+            gOptionsData.unk18--;
+        break;
+    case 3:
+        if (gMain.newKeys & 0x40)
+        {
+            if (gOptionsData.unkA > 7)
+            {
+                m4aSongNumStart(0x67);
+                gOptionsData.unkA--;
+            }
+        }
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gOptionsData.unkA <= 10)
+            {
+                m4aSongNumStart(0x67);
+                gOptionsData.unkA++;
+            }
+        }
+        if (gMain.newKeys & 1)
+        {
+            m4aSongNumStart(0x65);
+            gOptionsData.unk0 = 4;
+            gOptionsData.unk1A[gOptionsData.unkA - 7] = 1;
+        }
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gOptionsData.unkA = 6;
+            gOptionsData.unk0 = 0;
+        }
+        if (!(gMain.frameCount & 7))
+            gOptionsData.unk2 = 1 - gOptionsData.unk2;
+        break;
+    case 4:
+        gOptionsData.unk8++;
+        if (gOptionsData.unk8 > 24)
+        {
+            gOptionsData.unk8 = 0;
+            gOptionsData.unk6 = 1 - gOptionsData.unk6;
+        }
+        if (gMain.newKeys & 0x3F7)
+        {
+            s16 i;
+
+            m4aSongNumStart(0x65);
+            gOptionsData.unk20 = 10;
+            gOptionsData.unk22 = 0;
+            for (i = 0; i < 2; i++)
+                gOptionsData.unk24[i] = 10;
+            gOptionsData.unk28 = 0;
+        }
+        //_08051B0E
+        if (gOptionsData.unk20 > 0)
+        {
+            sub_524BC();
+            gOptionsData.unk20--;
+            if (gOptionsData.unk20 == 0)
+            {
+                gUnknown_02031AF0[4][(gOptionsData.unkA - 7) * 2 + 0] = gOptionsData.unk24[0];
+                gUnknown_02031AF0[4][(gOptionsData.unkA - 7) * 2 + 1] = gOptionsData.unk24[1];
+                gMain_saveData.unk144[(gOptionsData.unkA - 7)][0] = gUnknown_086BB910[gOptionsData.unk24[0]][0];
+                gMain_saveData.unk144[(gOptionsData.unkA - 7)][1] = gUnknown_086BB910[gOptionsData.unk24[1]][0];
+                gOptionsData.unk0 = 3;
+                gOptionsData.unk1A[gOptionsData.unkA - 7] = 0;
+                gOptionsData.unk8 = 0;
+                gOptionsData.unk6 = 1;
+            }
+        }
+        break;
+    }
+    //_08051B98
+    if (gOptionsData.unk2E == 1)
+    {
+        //gOptionsData.unk2B++;
+        if (++gOptionsData.unk2B > gUnknown_086BB9B4[gOptionsData.unk2C].unk2)
+        {
+            gOptionsData.unk2B = 0;
+            gOptionsData.unk2C++;
+            if (gOptionsData.unk2C > 12)
+            {
+                gOptionsData.unk2C = 0;
+                gOptionsData.unk2D = 0;
+                gOptionsData.unk2E = 0;
+            }
+            //_08051BE8
+            gOptionsData.unk2D = gUnknown_086BB9B4[gOptionsData.unk2C].unk0;
+        }
+        // _08051C30
+    }
+    else
+    //_08051C10
+    {
+        gOptionsData.unk2B++;
+        if (gOptionsData.unk2B > 18)
+        {
+            gOptionsData.unk2B = 0;
+            gOptionsData.unk2D = 1 - gOptionsData.unk2D;
+        }
+    }
+    sub_11FC();
+}
+
+void sub_51C3C(void)
+{
+    sub_111C();
+    if (sub_1170() != 0)
+    {
+        sub_1198();
+        gMain.subState++;
+    }
+}
+
+void sub_51C60(void)
+{
+    gMain_saveData.unk141 = gOptionsData.unk2A;
+    SaveFile_WriteToSram();
+    sub_2B4();
+    m4aMPlayAllStop();
+    sub_D10();
+    gAutoDisplayTitlescreenMenu = 1;
+    SetMainGameState(STATE_TITLE);
+}
+
+/*
+void sub_51C9C(void)
+{
+
+}
+*/