decompile through sub_51C3C

1 files changed, 501 insertions, 0 deletions

diff --git a/src/options.c b/src/options.c
new file mode 100644
index 0000000..ef31b58
--- /dev/null
+++ b/src/options.c
@@ -0,0 +1,501 @@
+#include "global.h"
+#include "m4a.h"
+#include "main.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 gUnknown_02002920;
+
+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)
+{
+    sub_438();
+
+    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++;
+}
+
+extern u8 gUnknown_02031AF0[][10];
+extern u8 gUnknown_08527ED6[][10];
+
+void sub_513B8(void)
+{
+    int i;
+    int j;
+
+    gUnknown_02002920.unk0 = 0;
+    gUnknown_02002920.unk2 = 0;
+    gUnknown_02002920.unk4 = 0;
+    gUnknown_02002920.unk6 = 1;
+    gUnknown_02002920.unk8 = 0;
+    gUnknown_02002920.unkA = 0;
+    gUnknown_02002920.unkC = gUnknown_0200B134.unk143;
+    gUnknown_02002920.unkE = 0;
+    gUnknown_02002920.unk10 = 0;
+    gUnknown_02002920.unk12 = 0;
+    gUnknown_02002920.unk13 = 0;
+    gUnknown_02002920.unk14 = 1;
+    gUnknown_02002920.unk15 = 0;
+    gUnknown_02002920.unk16 = 0;
+    gUnknown_02002920.unk17 = 1;
+    gUnknown_02002920.unk18 = 0;
+    for (i = 0; i < 6; i++)
+        gUnknown_02002920.unk1A[i] = 0;
+    gUnknown_02002920.unk20 = 0;
+    gUnknown_02002920.unk22 = 0;
+    for (i = 0; i < 2; i++)
+        gUnknown_02002920.unk24[i] = 10;
+    gUnknown_02002920.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)
+    {
+        gUnknown_02002920.unk2A = gUnknown_0200B134.unk141;
+        gUnknown_0200B134.unk141 = 1;
+    }
+    else
+    {
+        gUnknown_02002920.unk2A = 0;
+        gUnknown_0200B134.unk141 = 0;
+    }
+    gUnknown_02002920.unk2E = 0;
+    gUnknown_02002920.unk2B = 0;
+    gUnknown_02002920.unk2C = 0;
+    gUnknown_02002920.unk2D = 0;
+    gUnknown_02002920.unk2F = 0;
+    gUnknown_02002920.unk30 = 0;
+}
+
+extern u16 gUnknown_08527D22[];
+extern u16 gUnknown_086BB910[][4];
+extern struct {u8 unk0; s16 unk2;} gUnknown_086BB9B4[];
+extern u16 gUnknown_08527D66[];
+
+void sub_514B8(void)
+{
+    s16 r4;
+
+    sub_51C9C();
+    switch (gUnknown_02002920.unk0)
+    {
+    case 0:
+        if (gMain.newKeys & 0x40)
+        {
+            if (gUnknown_02002920.unkA != 0xD)
+            {
+                if (gUnknown_02002920.unkA == 0xE)
+                {
+                    m4aSongNumStart(0x67);
+                    gUnknown_02002920.unkA = 0xD;
+                }
+                else if (gUnknown_02002920.unkA > 0)
+                {
+                    m4aSongNumStart(0x67);
+                    gUnknown_02002920.unkA--;
+                }
+            }
+        }
+        //_0805152C
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gUnknown_02002920.unkA < 6)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA++;
+            }
+            else if (gUnknown_02002920.unkA == 0xD)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA = 0xE;
+            }
+            //_0805155E
+            else if (gUnknown_02002920.unkA == 0xE)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA = 2;
+            }
+            // _0805156A 
+        }
+        //_0805156C
+        if ((gMain.newKeys & 0x10) && gGameBoyPlayerEnabled == 1 && (u16)gUnknown_02002920.unkA < 2)
+        {
+            m4aSongNumStart(0x67);
+            gUnknown_02002920.unkA += 0xD;
+        }
+        if ((gMain.newKeys & 0x20) && gGameBoyPlayerEnabled == 1 && (u16)(gUnknown_02002920.unkA - 13) < 2)
+        {
+            m4aSongNumStart(0x67);
+            gUnknown_02002920.unkA -= 0xD;
+        }
+        //_080515C2
+        if (gMain.newKeys & 1)
+        {
+            switch (gUnknown_02002920.unkA)
+            {
+            case 0:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unk0 = 1;
+                gUnknown_02002920.unk18 = 0;
+                gUnknown_02002920.unk30 = 1;
+                if (gUnknown_02002920.unk2E == 1)
+                {
+                    gUnknown_02002920.unk2B = 0;
+                    gUnknown_02002920.unk2D = 0;
+                    gUnknown_02002920.unk2C = 0;
+                    gUnknown_02002920.unk2E = 0;
+                }
+                break;
+            case 1:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unk0 = 2;
+                gUnknown_02002920.unk18 = 0;
+                gUnknown_02002920.unk30 = 1;
+                if (gUnknown_02002920.unk2E == 1)
+                {
+                    gUnknown_02002920.unk2B = 0;
+                    gUnknown_02002920.unk2D = 0;
+                    gUnknown_02002920.unk2C = 0;
+                    gUnknown_02002920.unk2E = 0;
+                }
+                break;
+            case 2:
+            case 3:
+            case 4:
+            case 5:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
+                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                break;
+            case 6:
+                m4aSongNumStart(0x65);
+                gUnknown_02002920.unkC = gUnknown_02002920.unkA - 2;
+                gUnknown_0200B134.unk143 = gUnknown_02002920.unkC; 
+                gUnknown_02002920.unkA = 7;
+                gUnknown_02002920.unk0 = 3;
+                break;
+            case 14:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    gUnknown_02002920.unk2D = 0;
+                    if (gUnknown_02002920.unk2E == 1)
+                        gUnknown_02002920.unk2E = 0;
+                    gUnknown_02002920.unk2B = 0; 
+                    gUnknown_02002920.unk2C = 0; 
+                    gUnknown_02002920.unk2A = 0; 
+                }
+                break;
+            case 13:
+                if (gGameBoyPlayerEnabled == 1)
+                {
+                    m4aSongNumStart(0x65);
+                    sub_11B0(11);
+                    if (gUnknown_02002920.unk2E == 0)
+                        gUnknown_02002920.unk2E = 1;
+
+                    gUnknown_02002920.unk2B = 0; 
+                    gUnknown_02002920.unk2C = 0; 
+                    gUnknown_02002920.unk2A = 1; 
+                }
+                break;
+            }
+        }
+        //_0805177C
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gMain.subState++;
+            sub_525CC(gMain.saveData.unk143);
+
+        }
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk2 = 1 - gUnknown_02002920.unk2;
+        break;
+    case 1:  // _080517A8
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unkE--;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unkE++;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        if (gMain.newKeys & 0x40)
+            gUnknown_02002920.unkE += 10;
+        else if (gMain.newKeys & 0x80)
+            gUnknown_02002920.unkE -= 10;
+        if (gUnknown_02002920.unkE < 0)
+            gUnknown_02002920.unkE = 33;
+        if (gUnknown_02002920.unkE > 33)
+            gUnknown_02002920.unkE = 0;
+
+        r4 = gUnknown_02002920.unkE + 1;
+        gUnknown_02002920.unk12 = r4 / 100;
+        r4 %= 100;
+        gUnknown_02002920.unk13 = r4 / 10;
+        gUnknown_02002920.unk14 = r4 % 10;
+        if (gMain.newKeys & 1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D22[gUnknown_02002920.unkE]);
+        }
+        else if (gMain.newKeys & 2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unk4 = 0;
+            gUnknown_02002920.unk30 = 0;
+            gUnknown_02002920.unk0 = 0;
+        }
+        //_080518AA
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk4 = 1 - gUnknown_02002920.unk4;
+        if (gUnknown_02002920.unk18 > 0)
+            gUnknown_02002920.unk18--;
+        break;
+    case 2:
+        if (gMain.heldKeys & 0x20)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unk10--;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        else if (gMain.heldKeys & 0x10)
+        {
+            if (gUnknown_02002920.unk18 == 0)
+            {
+                gUnknown_02002920.unk10++;
+                gUnknown_02002920.unk18 = 10;
+            }
+        }
+        //_08051918
+        if (gMain.newKeys & 0x40)
+            gUnknown_02002920.unk10 += 10;
+        else if (gMain.newKeys & 0x80)
+            gUnknown_02002920.unk10 -= 10;
+        if (gUnknown_02002920.unk10 < 0)
+            gUnknown_02002920.unk10 = 0xB7;
+        if (gUnknown_02002920.unk10 > 0xB7)
+            gUnknown_02002920.unk10 = 0;
+
+        r4 = gUnknown_02002920.unk10 + 1;
+        gUnknown_02002920.unk15 = r4 / 100;
+        r4 %= 100;
+        gUnknown_02002920.unk16 = r4 / 10;
+        gUnknown_02002920.unk17 = r4 % 10;
+        if (gMain.newKeys & 0x1)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(gUnknown_08527D66[gUnknown_02002920.unk10]);
+        }
+        else if (gMain.newKeys & 0x2)
+        {
+            m4aMPlayAllStop();
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unk4 = 0;
+            gUnknown_02002920.unk30 = 0;
+            gUnknown_02002920.unk0 = 0;
+        }
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk4 = 1 - gUnknown_02002920.unk4;
+        if (gUnknown_02002920.unk18 > 0)
+            gUnknown_02002920.unk18--;
+        break;
+    case 3:  //_08051A08
+        if (gMain.newKeys & 0x40)
+        {
+            if (gUnknown_02002920.unkA > 7)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA--;
+            }
+        }
+        //_08051A34
+        else if (gMain.newKeys & 0x80)
+        {
+            if (gUnknown_02002920.unkA <= 10)
+            {
+                m4aSongNumStart(0x67);
+                gUnknown_02002920.unkA++;
+            }
+        }
+        //_08051A52
+        if (gMain.newKeys & 1)
+        {
+            m4aSongNumStart(0x65);
+            gUnknown_02002920.unk0 = 4;
+            gUnknown_02002920.unk1A[gUnknown_02002920.unkA - 7] = 1;
+        }
+        //_08051A80
+        else if (gMain.newKeys & 2)
+        {
+            m4aSongNumStart(0x66);
+            gUnknown_02002920.unkA = 6;
+            gUnknown_02002920.unk0 = 0;
+        }
+        //_08051A96 
+        if (!(gMain.unk4C & 7))
+            gUnknown_02002920.unk2 = 1 - gUnknown_02002920.unk2;
+        break;
+    case 4:
+        gUnknown_02002920.unk8++;
+        if (gUnknown_02002920.unk8 > 24)
+        {
+            gUnknown_02002920.unk8 = 0;
+            gUnknown_02002920.unk6 = 1 - gUnknown_02002920.unk6;
+        }
+        if (gMain.newKeys & 0x3F7)
+        {
+            s16 i;
+
+            m4aSongNumStart(0x65);
+            gUnknown_02002920.unk20 = 10;
+            gUnknown_02002920.unk22 = 0;
+            for (i = 0; i < 2; i++)
+                gUnknown_02002920.unk24[i] = 10;
+            gUnknown_02002920.unk28 = 0;
+        }
+        //_08051B0E
+        if (gUnknown_02002920.unk20 > 0)
+        {
+            sub_524BC();
+            gUnknown_02002920.unk20--;
+            if (gUnknown_02002920.unk20 == 0)
+            {
+                gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 0] = gUnknown_02002920.unk24[0];
+                gUnknown_02031AF0[4][(gUnknown_02002920.unkA - 7) * 2 + 1] = gUnknown_02002920.unk24[1];
+                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][0] = gUnknown_086BB910[gUnknown_02002920.unk24[0]][0];
+                gUnknown_0200B134.unk144[(gUnknown_02002920.unkA - 7)][1] = gUnknown_086BB910[gUnknown_02002920.unk24[1]][0];
+                gUnknown_02002920.unk0 = 3;
+                gUnknown_02002920.unk1A[gUnknown_02002920.unkA - 7] = 0;
+                gUnknown_02002920.unk8 = 0;
+                gUnknown_02002920.unk6 = 1;
+            }
+        }
+        break;
+    }
+    //_08051B98
+    if (gUnknown_02002920.unk2E == 1)
+    {
+        //gUnknown_02002920.unk2B++;
+        if (++gUnknown_02002920.unk2B > gUnknown_086BB9B4[gUnknown_02002920.unk2C].unk2)
+        {
+            gUnknown_02002920.unk2B = 0;
+            gUnknown_02002920.unk2C++;
+            if (gUnknown_02002920.unk2C > 12)
+            {
+                gUnknown_02002920.unk2C = 0;
+                gUnknown_02002920.unk2D = 0;
+                gUnknown_02002920.unk2E = 0;
+            }
+            //_08051BE8
+            gUnknown_02002920.unk2D = gUnknown_086BB9B4[gUnknown_02002920.unk2C].unk0;
+        }
+        // _08051C30
+    }
+    else
+    //_08051C10
+    {
+        gUnknown_02002920.unk2B++;
+        if (gUnknown_02002920.unk2B > 18)
+        {
+            gUnknown_02002920.unk2B = 0;
+            gUnknown_02002920.unk2D = 1 - gUnknown_02002920.unk2D;
+        }
+    }
+    sub_11FC();
+}
+
+void sub_51C3C(void)
+{
+    sub_111C();
+    if (sub_1170() != 0)
+    {
+        sub_1198();
+        gMain.subState++;
+    }
+}