Decompile asm/rotating_gate.s

1 files changed, 718 insertions, 0 deletions

diff --git a/src/rotating_gate.c b/src/rotating_gate.c
new file mode 100644
index 000000000..f8e5fac21
--- /dev/null
+++ b/src/rotating_gate.c
@@ -0,0 +1,718 @@
+#include "global.h"
+#include "bike.h"
+#include "event_data.h"
+#include "fieldmap.h"
+#include "sound.h"
+#include "sprite.h"
+
+struct UnknownStruct
+{
+    /* 0x0 */ struct Coords16 pos;
+    /* 0x4 */ u8 e;
+    /* 0x5 */ u8 f;
+    /* 0x6 */ u8 g;
+    /* 0x7 */ u8 h;
+};
+
+struct UnknownStruct2
+{
+    s8 a;
+    s8 b;
+    u8 c;
+    u8 d;
+};
+
+extern const struct SpriteSheet gRotatingGatesGraphicsTable[];
+extern /* const */ struct UnknownStruct gUnknown_083D2964[];
+extern /* const */ struct UnknownStruct gUnknown_083D299C[];
+extern const struct SpriteTemplate gSpriteTemplate_83D60A4;
+extern const struct SpriteTemplate gSpriteTemplate_83D608C;
+
+extern u8 gUnknown_020387F0[10]; // puzzle oam ID list
+
+extern struct UnknownStruct *gUnknown_02038800;
+extern u8 gUnknown_02038804; // puzzle count
+
+extern struct UnknownStruct2 gUnknown_083D611C[5];
+extern struct UnknownStruct2 gUnknown_083D60FC[5];
+extern const u8 gUnknown_083D613C[12][8];
+
+extern const u8 gUnknown_083D60BC[4][4];
+extern const u8 gUnknown_083D60CC[4][4];
+extern const u8 gUnknown_083D60DC[4][4];
+extern const u8 gUnknown_083D60EC[4][4];
+
+u8 sub_80C7BAC(u8 i, s16 a, s16 b);
+void sub_8060388(s16 x, s16 y, s16 *outX, s16 *outY);
+void sub_80C7D14(struct Sprite *sprite);
+
+int GetCurrentMapRotatingGatePuzzleType(void)
+{
+    if (gSaveBlock1.location.mapGroup == 0xC && gSaveBlock1.location.mapNum == 0x1)
+    {
+        return 1;
+    }
+
+    if (gSaveBlock1.location.mapGroup == 0x1d && gSaveBlock1.location.mapNum == 0x8)
+    {
+        return 2;
+    }
+
+    return 0;
+}
+
+// ResetSomething
+void sub_80C79CC(void)
+{
+    int i;
+    u8 *ptr;
+
+    ptr = (u8 *)GetVarPointer(0x4000);
+
+    for (i = 0; i < gUnknown_02038804; i++)
+    {
+        ptr[i] = gUnknown_02038800[i].f;
+    }
+}
+
+// GetSomething
+/* u8 */ int sub_80C7A08(u8 a)
+{
+    u8 *ptr;
+    ptr = (u8 *)GetVarPointer(0x4000);
+    return ptr[a];
+}
+
+// SetSomething
+void sub_80C7A24(u8 a, u8 b)
+{
+    u8 *ptr;
+    ptr = (u8 *)GetVarPointer(0x4000);
+    ptr[a] = b;
+}
+
+// RotateInDirectionProbably
+void sub_80C7A44(u8 a, u32 b)
+{
+    u8 r1;
+    r1 = sub_80C7A08(a);
+
+    if (b == 1)
+    {
+        if (r1)
+        {
+            r1--;
+        }
+        else
+        {
+            r1 = 3;
+        }
+    }
+    else
+    {
+        r1 = ++r1 % 4;
+    }
+
+    sub_80C7A24(a, r1);
+}
+
+// Configure
+void sub_80C7A80(void)
+{
+    int a = GetCurrentMapRotatingGatePuzzleType();
+    u32 i;
+
+    switch (a)
+    {
+    case 1:
+        gUnknown_02038800 = gUnknown_083D2964;
+        gUnknown_02038804 = 7;
+        break;
+    case 2:
+        gUnknown_02038800 = gUnknown_083D299C;
+        gUnknown_02038804 = 0xE;
+        break;
+    case 0:
+    default:
+        return;
+    }
+
+    for (i = 0; i < 14; i++)
+    {
+        gUnknown_020387F0[i] = MAX_SPRITES;
+    }
+}
+
+void sub_80C7ADC(s16 a, s16 b)
+{
+    u8 i;
+    s16 x = gSaveBlock1.pos.x - 2;
+    s16 x2 = gSaveBlock1.pos.x + 0x11;
+    s16 y = gSaveBlock1.pos.y - 2;
+    s16 y2 = gSaveBlock1.pos.y + 0xe;
+
+    s16 x3, y3;
+
+    for (i = 0; i < gUnknown_02038804; i++)
+    {
+        x3 = gUnknown_02038800[i].pos.x + 7;
+        y3 = gUnknown_02038800[i].pos.y + 7;
+
+        if (y <= y3 && y2 >= y3 && x <= x3 && x2 >= x3 && gUnknown_020387F0[i] == MAX_SPRITES)
+        {
+            gUnknown_020387F0[i] = sub_80C7BAC(i, a, b);
+        }
+    }
+}
+
+// CreateSprite
+u8 sub_80C7BAC(u8 i, s16 a, s16 b)
+{
+    struct Sprite *sprite; // r4
+    struct SpriteTemplate template;
+    struct UnknownStruct *unk;
+    u8 id; //  r5
+    s16 x, y;
+
+    unk = &gUnknown_02038800[i];
+
+    if (unk->e == 0 || unk->e == 4)
+    {
+        template = gSpriteTemplate_83D60A4;
+    }
+    else
+    {
+        template = gSpriteTemplate_83D608C;
+    }
+
+    template.tileTag = unk->e + 0x1300;
+
+    id = CreateSprite(&template, 0, 0, 0x94);
+    if (id == MAX_SPRITES)
+    {
+        return MAX_SPRITES;
+    }
+
+    x = unk->pos.x + 7;
+    y = unk->pos.y + 7;
+
+    sprite = &gSprites[id];
+    sprite->data0 = i;
+    sprite->coordOffsetEnabled = 1;
+
+    sub_8060388(x + a, y + b, &sprite->pos1.x, &sprite->pos1.y);
+    sub_80C7D14(sprite);
+    StartSpriteAffineAnim(sprite, sub_80C7A08(i));
+
+    return id;
+}
+
+// RotateGateWithSE
+void sub_80C7C94(struct Sprite *sprite)
+{
+    u8 a; // r5
+    u8 b;
+    u8 affineAnimation;
+
+    a = sprite->data1;
+    b = sprite->data2;
+
+    sub_80C7D14(sprite);
+
+    if (a == 1)
+    {
+        affineAnimation = b + 4;
+
+        if (GetPlayerSpeed() != 1)
+            affineAnimation += 8;
+
+        PlaySE(48);
+        StartSpriteAffineAnim(sprite, affineAnimation);
+    }
+    else if (a == 2)
+    {
+        affineAnimation = b + 8;
+
+        if (GetPlayerSpeed() != 1)
+            affineAnimation += 8;
+
+        PlaySE(48);
+        StartSpriteAffineAnim(sprite, affineAnimation);
+    }
+
+    sprite->data1 = 0;
+}
+
+// See sub_806487C (field_map_obj_helpers.c)
+void sub_80C7D14(struct Sprite *sprite)
+{
+    u16 x;
+    s16 x2;
+    u16 y;
+    s16 y2;
+
+    sprite->invisible = 0;
+    x = sprite->pos1.x + sprite->pos2.x + sprite->centerToCornerVecX + gSpriteCoordOffsetX;
+    y = sprite->pos1.y + sprite->pos2.y + sprite->centerToCornerVecY + gSpriteCoordOffsetY;
+
+    x2 = x + 0x40; // Dimensions of the rotating gate
+    y2 = y + 0x40;
+
+    // TODO: Make this 0x10 a constant
+    if ((s16)x > DISPLAY_WIDTH + 0x10 - 1 || x2 < -0x10)
+    {
+        sprite->invisible = 1;
+    }
+
+    if ((s16)y > DISPLAY_HEIGHT + 0x10 - 1 || y2 < -0x10)
+    {
+        sprite->invisible = 1;
+    }
+}
+
+void LoadRotatingGatePics(void)
+{
+    LoadSpriteSheets(gRotatingGatesGraphicsTable);
+}
+
+void sub_80C7DC0(void)
+{
+    s16 x;
+    s16 x2;
+    s16 y;
+    s16 y2;
+    s16 xGate;
+    s16 yGate;
+    int i;
+    struct Sprite *sprite;
+
+    x = gSaveBlock1.pos.x - 2;
+    x2 = gSaveBlock1.pos.x + 17;
+    y = gSaveBlock1.pos.y - 2;
+    y2 = gSaveBlock1.pos.y + 14;
+
+    for (i = 0; i < gUnknown_02038804; i++)
+    {
+        xGate = gUnknown_02038800[i].pos.x + 7;
+        yGate = gUnknown_02038800[i].pos.y + 7;
+
+        if (gUnknown_020387F0[i] == MAX_SPRITES)
+            continue;
+
+        if (xGate < x || xGate > x2 || yGate < y || yGate > y2)
+        {
+            sprite = &gSprites[gUnknown_020387F0[i]];
+            FreeSpriteOamMatrix(sprite);
+            DestroySprite(sprite);
+            gUnknown_020387F0[i] = MAX_SPRITES;
+        }
+    }
+}
+
+#ifdef NONMATCHING
+int sub_80C7E8C(u8 a, int puzzleType)
+{
+    struct UnknownStruct2 *unk1;
+    u8 unk2;
+    s16 x;
+    s16 y;
+    int unk3;
+    int i;
+    int j;
+    int unk4;
+    const u8 *unk5;
+    int unk6;
+    u8 unk7;
+    int wat;
+
+    if (puzzleType == 1)
+        unk1 = gUnknown_083D611C;
+    else if (puzzleType == 2)
+        unk1 = gUnknown_083D60FC;
+    else
+        return 0;
+
+    unk2 = sub_80C7A08(a);
+
+    unk3 = gUnknown_02038800[a].e;
+    x = gUnknown_02038800[a].pos.x + 7;
+    y = gUnknown_02038800[a].pos.y + 7;
+
+    for (i = 0; i <= 3; i++)
+    {
+        j = 0;
+        unk4 = unk2 + i;
+        wat = unk2 + i;
+        unk5 = &gUnknown_083D613C[unk3][i * 2];
+
+        for (; j <= 1; j++)
+        {
+            unk6 = wat;
+            if (wat < 0)
+                unk6 = unk4 + 3;
+
+            unk7 = (2 * (wat - ((unk6 >> 2) << 2)) + j);
+
+            if (*unk5)
+            {
+                if (MapGridIsImpassableAt(unk1[unk7].a + x, unk1[unk7].b + y) == 1)
+                    return 0;
+            }
+            unk5++;
+        }
+    }
+
+    return 1;
+}
+#else
+__attribute__((naked)) int sub_80C7E8C(u8 a, int puzzleType)
+{
+    asm(".syntax unified\n\
+	push {r4-r7,lr}\n\
+	mov r7, r10\n\
+	mov r6, r9\n\
+	mov r5, r8\n\
+	push {r5-r7}\n\
+	sub sp, 0xC\n\
+	lsls r0, 24\n\
+	lsrs r4, r0, 24\n\
+	cmp r1, 0x1\n\
+	bne _080C7EAC\n\
+	ldr r0, _080C7EA8 @ =gUnknown_083D611C\n\
+	mov r10, r0\n\
+	b _080C7EB8\n\
+	.align 2, 0\n\
+_080C7EA8: .4byte gUnknown_083D611C\n\
+_080C7EAC:\n\
+	cmp r1, 0x2\n\
+	beq _080C7EB4\n\
+_080C7EB0:\n\
+	movs r0, 0\n\
+	b _080C7F48\n\
+_080C7EB4:\n\
+	ldr r1, _080C7F58 @ =gUnknown_083D60FC\n\
+	mov r10, r1\n\
+_080C7EB8:\n\
+	adds r0, r4, 0\n\
+	bl sub_80C7A08\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	str r0, [sp]\n\
+	ldr r0, _080C7F5C @ =gUnknown_02038800\n\
+	ldr r1, [r0]\n\
+	lsls r0, r4, 3\n\
+	adds r0, r1\n\
+	ldrb r2, [r0, 0x4]\n\
+	ldrh r1, [r0]\n\
+	adds r1, 0x7\n\
+	ldrh r0, [r0, 0x2]\n\
+	adds r0, 0x7\n\
+	movs r3, 0\n\
+	lsls r2, 3\n\
+	str r2, [sp, 0x4]\n\
+	lsls r1, 16\n\
+	asrs r1, 16\n\
+	mov r9, r1\n\
+	lsls r0, 16\n\
+	asrs r0, 16\n\
+	mov r8, r0\n\
+_080C7EE8:\n\
+	movs r6, 0\n\
+	ldr r2, [sp]\n\
+	adds r7, r2, r3\n\
+	lsls r0, r3, 1\n\
+	adds r5, r7, 0\n\
+	ldr r1, [sp, 0x4]\n\
+	adds r0, r1\n\
+	ldr r2, _080C7F60 @ =gUnknown_083D613C\n\
+	adds r4, r0, r2\n\
+_080C7EFA:\n\
+	adds r0, r5, 0\n\
+	cmp r5, 0\n\
+	bge _080C7F02\n\
+	adds r0, r7, 0x3\n\
+_080C7F02:\n\
+	asrs r0, 2\n\
+	lsls r0, 2\n\
+	subs r0, r5, r0\n\
+	lsls r0, 1\n\
+	adds r0, r6\n\
+	lsls r0, 24\n\
+	lsrs r1, r0, 24\n\
+	ldrb r0, [r4]\n\
+	cmp r0, 0\n\
+	beq _080C7F38\n\
+	lsls r1, 2\n\
+	add r1, r10\n\
+	movs r0, 0\n\
+	ldrsb r0, [r1, r0]\n\
+	add r0, r9\n\
+	ldrb r1, [r1, 0x1]\n\
+	lsls r1, 24\n\
+	asrs r1, 24\n\
+	add r1, r8\n\
+	str r3, [sp, 0x8]\n\
+	bl MapGridIsImpassableAt\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	ldr r3, [sp, 0x8]\n\
+	cmp r0, 0x1\n\
+	beq _080C7EB0\n\
+_080C7F38:\n\
+	adds r4, 0x1\n\
+	adds r6, 0x1\n\
+	cmp r6, 0x1\n\
+	ble _080C7EFA\n\
+	adds r3, 0x1\n\
+	cmp r3, 0x3\n\
+	ble _080C7EE8\n\
+	movs r0, 0x1\n\
+_080C7F48:\n\
+	add sp, 0xC\n\
+	pop {r3-r5}\n\
+	mov r8, r3\n\
+	mov r9, r4\n\
+	mov r10, r5\n\
+	pop {r4-r7}\n\
+	pop {r1}\n\
+	bx r1\n\
+	.align 2, 0\n\
+_080C7F58: .4byte gUnknown_083D60FC\n\
+_080C7F5C: .4byte gUnknown_02038800\n\
+_080C7F60: .4byte gUnknown_083D613C\n\
+.syntax divided\n");
+}
+#endif
+
+#ifdef NONMATCHING
+int sub_80C7F64(u8 a, u8 b)
+{
+    int unk1;
+    int unk2;
+    int unk4;
+    int unk5;
+    int unk6;
+    int unk7;
+
+    unk5 = a >> 1;
+    unk1 = b & 1;
+    unk2 = unk5 - sub_80C7A08(a) + 4;
+    unk7 = unk2 < 0 ? unk2 + 3 : unk2;
+    unk4 = (unk7 - ((unk7 >> 2) << 2));
+    unk6 = gUnknown_02038800[a].e;
+    return gUnknown_083D613C[unk6][(s8)unk4 * 2 + unk1];
+}
+#else
+__attribute__((naked)) int sub_80C7F64(u8 a, u8 b)
+{
+    asm(".syntax unified\n\
+	push {r4-r6,lr}\n\
+	adds r4, r1, 0\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	adds r6, r0, 0\n\
+	lsls r4, 24\n\
+	lsrs r5, r4, 24\n\
+	lsrs r4, 25\n\
+	movs r0, 0x1\n\
+	ands r5, r0\n\
+	adds r0, r6, 0\n\
+	bl sub_80C7A08\n\
+	subs r4, r0\n\
+	adds r1, r4, 0x4\n\
+	adds r0, r1, 0\n\
+	cmp r1, 0\n\
+	bge _080C7F8A\n\
+	adds r0, r4, 0x7\n\
+_080C7F8A:\n\
+	asrs r0, 2\n\
+	lsls r0, 2\n\
+	subs r0, r1, r0\n\
+	ldr r1, _080C7FB0 @ =gUnknown_02038800\n\
+	ldr r2, [r1]\n\
+	lsls r1, r6, 3\n\
+	adds r1, r2\n\
+	ldrb r1, [r1, 0x4]\n\
+	ldr r2, _080C7FB4 @ =gUnknown_083D613C\n\
+	lsls r0, 24\n\
+	asrs r0, 23\n\
+	adds r0, r5\n\
+	lsls r1, 3\n\
+	adds r0, r1\n\
+	adds r0, r2\n\
+	ldrb r0, [r0]\n\
+	pop {r4-r6}\n\
+	pop {r1}\n\
+	bx r1\n\
+	.align 2, 0\n\
+_080C7FB0: .4byte gUnknown_02038800\n\
+_080C7FB4: .4byte gUnknown_083D613C\n\
+.syntax divided\n");
+}
+#endif
+
+void sub_80C7FB8(u8 a, int b)
+{
+    struct Sprite *sprite;
+
+    if (gUnknown_020387F0[a] != MAX_SPRITES)
+    {
+        sprite = &gSprites[gUnknown_020387F0[a]];
+        sprite->data1 = b;
+        sprite->data2 = sub_80C7A08(a);
+    }
+}
+
+#ifdef NONMATCHING
+u8 sub_80C7FEC(u8 a, s16 b, s16 c)
+{
+    register const u8(*ptr)[][4] asm("r3");
+
+    if (a == 2)
+        ptr = &gUnknown_083D60BC;
+    else if (a == 1)
+        ptr = &gUnknown_083D60CC;
+    else if (a == 3)
+        ptr = &gUnknown_083D60DC;
+    else if (a == 4)
+        ptr = &gUnknown_083D60EC;
+    else
+        return 0xFF;
+
+    return (*ptr)[c][b];
+}
+#else
+__attribute__((naked)) u8 sub_80C7FEC(u8 a, s16 b, s16 c)
+{
+    asm(".syntax unified\n\
+    	push {lr}\n\
+	lsls r0, 24\n\
+	lsrs r0, 24\n\
+	adds r3, r0, 0\n\
+	lsls r1, 16\n\
+	lsrs r1, 16\n\
+	lsls r2, 16\n\
+	lsrs r2, 16\n\
+	cmp r0, 0x2\n\
+	bne _080C8008\n\
+	ldr r3, _080C8004 @ =gUnknown_083D60BC\n\
+	b _080C802A\n\
+	.align 2, 0\n\
+_080C8004: .4byte gUnknown_083D60BC\n\
+_080C8008:\n\
+	cmp r0, 0x1\n\
+	bne _080C8014\n\
+	ldr r3, _080C8010 @ =gUnknown_083D60CC\n\
+	b _080C802A\n\
+	.align 2, 0\n\
+_080C8010: .4byte gUnknown_083D60CC\n\
+_080C8014:\n\
+	cmp r0, 0x3\n\
+	bne _080C8020\n\
+	ldr r3, _080C801C @ =gUnknown_083D60DC\n\
+	b _080C802A\n\
+	.align 2, 0\n\
+_080C801C: .4byte gUnknown_083D60DC\n\
+_080C8020:\n\
+	cmp r3, 0x4\n\
+	beq _080C8028\n\
+	movs r0, 0xFF\n\
+	b _080C8038\n\
+_080C8028:\n\
+	ldr r3, _080C803C @ =gUnknown_083D60EC\n\
+_080C802A:\n\
+	lsls r0, r2, 16\n\
+	lsls r1, 16\n\
+	asrs r1, 16\n\
+	asrs r0, 14\n\
+	adds r0, r1\n\
+	adds r0, r3, r0\n\
+	ldrb r0, [r0]\n\
+_080C8038:\n\
+	pop {r1}\n\
+	bx r1\n\
+	.align 2, 0\n\
+_080C803C: .4byte gUnknown_083D60EC\n\
+.syntax divided\n");
+}
+#endif
+
+void sub_80C8040(void)
+{
+    if (GetCurrentMapRotatingGatePuzzleType())
+    {
+        sub_80C7A80();
+        sub_80C79CC();
+    }
+}
+
+void RotatingGatePuzzleCameraUpdate(u16 a, u16 b)
+{
+    if (GetCurrentMapRotatingGatePuzzleType())
+    {
+        sub_80C7ADC(a, b);
+        sub_80C7DC0();
+    }
+}
+
+void sub_80C8080(void)
+{
+    if (GetCurrentMapRotatingGatePuzzleType())
+    {
+        LoadRotatingGatePics();
+        sub_80C7A80();
+        sub_80C7ADC(0, 0);
+    }
+}
+
+bool8 CheckForRotatingGatePuzzleCollision(u8 a, s16 x, s16 y)
+{
+    int i;
+    s16 gateX;
+    s16 gateY;
+    register u32 check asm("r0");
+    int upperNibble;
+    int lowerNibble;
+    s16 finalX;
+    s16 finalY;
+
+    if (!GetCurrentMapRotatingGatePuzzleType())
+    {
+        return 0;
+    }
+
+    for (i = 0; i < gUnknown_02038804; i++)
+    {
+        gateX = gUnknown_02038800[i].pos.x + 7;
+        gateY = gUnknown_02038800[i].pos.y + 7;
+
+        if (gateX - 2 <= x && x <= gateX + 1 && gateY - 2 <= y && y <= gateY + 1)
+        {
+            finalX = x - gateX + 2;
+            finalY = y - gateY + 2;
+            check = sub_80C7FEC(a, finalX, finalY);
+
+            if (check != 255)
+            {
+                upperNibble = check >> 4;
+                lowerNibble = check & 0xF;
+
+                asm("" ::"r"(lowerNibble));
+
+                if (sub_80C7F64(i, lowerNibble))
+                {
+                    if (sub_80C7E8C(i, upperNibble))
+                    {
+                        sub_80C7FB8(i, upperNibble);
+                        sub_80C7A44(i, upperNibble);
+                        return 0;
+                    }
+
+                    return 1;
+                }
+            }
+        }
+    }
+
+    return 0;
+}