From 605ef7de2674a69222f5fa62090b2b0bb7fb3d31 Mon Sep 17 00:00:00 2001
From: Smileynator <hoivince@hotmail.com>
Date: Sun, 27 Jul 2025 21:45:20 +0200
Subject: [PATCH] Decomp sub_17C1C (#139)

* Updated all global values and the changes the resulting refactor.

* decomp sub_17C1C

* removed expected objects
---
 asm/rom_11B9C.s           | 402 +-------------------------------------
 expected_objs/sub_179D0.o | Bin 3124 -> 0 bytes
 expected_objs/sub_17C1C.o | Bin 3324 -> 0 bytes
 include/global.h          |   9 +-
 ld_script.txt             |   2 +-
 src/rom_17634.c           | 151 ++++++++++++++
 src/rom_356A0.c           |   6 +-
 7 files changed, 162 insertions(+), 408 deletions(-)
 delete mode 100644 expected_objs/sub_179D0.o
 delete mode 100644 expected_objs/sub_17C1C.o

diff --git a/asm/rom_11B9C.s b/asm/rom_11B9C.s
index 2514a20..10616fe 100644
--- a/asm/rom_11B9C.s
+++ b/asm/rom_11B9C.s
@@ -5914,407 +5914,7 @@ _08017628: .4byte 0x000003AB
 _0801762C: .4byte 0x000003DA
 _08017630: .4byte 0x000003A2
 
-    .section .text17C1C
-
-	thumb_func_start sub_17C1C
-sub_17C1C: @ 0x08017C1C
-	push {r4, r5, r6, r7, lr}
-	mov r7, r8
-	push {r7}
-	sub sp, #4
-	adds r3, r0, #0
-	ldr r0, _08017CF8 @ =gCurrentPinballGame
-	ldr r1, [r0]
-	movs r2, #0xfe
-	lsls r2, r2, #2
-	adds r1, r1, r2
-	movs r2, #1
-	strb r2, [r1]
-	movs r1, #0
-	ldrsh r4, [r3, r1]
-	adds r1, r4, #0
-	mov ip, r0
-	cmp r4, #0
-	bge _08017C42
-	adds r1, r4, #7
-_08017C42:
-	asrs r1, r1, #3
-	lsls r0, r1, #0x10
-	lsrs r0, r0, #0x10
-	ldr r2, _08017CFC @ =0xFFFF0000
-	mov r8, r2
-	ands r6, r2
-	orrs r6, r0
-	movs r0, #2
-	ldrsh r3, [r3, r0]
-	adds r0, r3, #0
-	cmp r3, #0
-	bge _08017C5C
-	adds r0, r3, #7
-_08017C5C:
-	asrs r0, r0, #3
-	lsls r2, r0, #0x10
-	ldr r5, _08017D00 @ =0x0000FFFF
-	ands r6, r5
-	lsls r1, r1, #3
-	subs r1, r4, r1
-	lsls r1, r1, #0x10
-	lsrs r1, r1, #0x10
-	mov r4, r8
-	ands r7, r4
-	orrs r7, r1
-	lsls r0, r0, #3
-	subs r0, r3, r0
-	lsls r0, r0, #0x10
-	ands r7, r5
-	orrs r7, r0
-	orrs r6, r2
-	asrs r4, r2, #0x10
-	adds r2, r4, #0
-	cmp r4, #0
-	bge _08017C88
-	adds r2, #0x3f
-_08017C88:
-	asrs r2, r2, #6
-	mov r0, ip
-	ldr r0, [r0]
-	mov r8, r0
-	adds r0, #0x24
-	movs r3, #0
-	ldrsb r3, [r0, r3]
-	lsls r1, r2, #6
-	subs r1, r4, r1
-	lsls r1, r1, #0x10
-	ands r6, r5
-	ldr r4, _08017D04 @ =gUnknown_02031520
-	adds r3, r3, r2
-	lsls r3, r3, #2
-	adds r2, r4, #0
-	adds r2, #0x38
-	adds r2, r3, r2
-	lsls r0, r6, #0x10
-	asrs r0, r0, #0x10
-	asrs r1, r1, #0xa
-	adds r1, r1, r0
-	ldr r0, [r2]
-	lsls r1, r1, #1
-	adds r1, r1, r0
-	movs r0, #0
-	ldrsh r2, [r1, r0]
-	asrs r1, r7, #0x10
-	lsls r0, r7, #0x10
-	asrs r0, r0, #0x10
-	lsls r1, r1, #3
-	lsls r2, r2, #6
-	adds r1, r1, r2
-	adds r1, r1, r0
-	adds r4, #0x58
-	adds r3, r3, r4
-	ldr r0, [r3]
-	adds r0, r0, r1
-	ldrb r1, [r0]
-	lsrs r1, r1, #4
-	movs r0, #0x80
-	lsls r0, r0, #3
-	add r0, r8
-	ldrh r3, [r0]
-	ldr r2, _08017D08 @ =0x00000402
-	add r2, r8
-	ldrh r4, [r2]
-	adds r0, r1, #0
-	subs r0, #8
-	cmp r0, #4
-	bls _08017CEE
-	b _08017F18
-_08017CEE:
-	lsls r0, r0, #2
-	ldr r1, _08017D0C @ =_08017D10
-	adds r0, r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_08017CF8: .4byte gCurrentPinballGame
-_08017CFC: .4byte 0xFFFF0000
-_08017D00: .4byte 0x0000FFFF
-_08017D04: .4byte gUnknown_02031520
-_08017D08: .4byte 0x00000402
-_08017D0C: .4byte _08017D10
-_08017D10: @ jump table
-	.4byte _08017D24 @ case 0
-	.4byte _08017D74 @ case 1
-	.4byte _08017DBE @ case 2
-	.4byte _08017E9C @ case 3
-	.4byte _08017EEC @ case 4
-_08017D24:
-	lsls r0, r3, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x72
-	bgt _08017D50
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x38
-	bgt _08017D40
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017D3C @ =0x0000041C
-	b _08017F0A
-	.align 2, 0
-_08017D3C: .4byte 0x0000041C
-_08017D40:
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017D4C @ =0x0000041D
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017D4C: .4byte 0x0000041D
-_08017D50:
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x63
-	bgt _08017D64
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017D60 @ =0x0000041F
-	b _08017F0A
-	.align 2, 0
-_08017D60: .4byte 0x0000041F
-_08017D64:
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017D70 @ =0x0000041E
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017D70: .4byte 0x0000041E
-_08017D74:
-	lsls r0, r3, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x72
-	bgt _08017DA0
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x45
-	bgt _08017D90
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017D8C @ =0x00000427
-	b _08017F0A
-	.align 2, 0
-_08017D8C: .4byte 0x00000427
-_08017D90:
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017D9C @ =0x00000425
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017D9C: .4byte 0x00000425
-_08017DA0:
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x45
-	bgt _08017DB2
-	mov r3, ip
-	ldr r0, [r3]
-	movs r4, #0x85
-	lsls r4, r4, #3
-	b _08017F0A
-_08017DB2:
-	mov r1, ip
-	ldr r0, [r1]
-	movs r2, #0x84
-	lsls r2, r2, #3
-	adds r1, r0, r2
-	b _08017F0C
-_08017DBE:
-	mov r3, ip
-	ldr r0, [r3]
-	movs r4, #0xfe
-	lsls r4, r4, #2
-	adds r0, r0, r4
-	movs r1, #0
-	strb r1, [r0]
-	ldr r2, [r3]
-	ldr r1, _08017E10 @ =0x00000412
-	adds r0, r2, r1
-	movs r3, #0
-	ldrsh r0, [r0, r3]
-	cmp r0, #0
-	bne _08017E18
-	adds r4, #8
-	adds r0, r2, r4
-	ldr r1, [r0]
-	ldr r3, _08017E14 @ =0x00000434
-	adds r0, r2, r3
-	ldr r0, [r0]
-	cmp r1, r0
-	bne _08017DEC
-	b _08017F18
-_08017DEC:
-	adds r4, #0x2e
-	adds r1, r2, r4
-	movs r0, #0x11
-	strb r0, [r1]
-	mov r0, ip
-	ldr r1, [r0]
-	movs r2, #0x80
-	lsls r2, r2, #3
-	adds r0, r1, r2
-	ldrh r2, [r0]
-	adds r0, r1, r3
-	strh r2, [r0]
-	subs r3, #0x32
-	adds r0, r1, r3
-	ldrh r0, [r0]
-	adds r4, #8
-	b _08017E90
-	.align 2, 0
-_08017E10: .4byte 0x00000412
-_08017E14: .4byte 0x00000434
-_08017E18:
-	cmp r0, #8
-	bne _08017E58
-	movs r1, #0x80
-	lsls r1, r1, #3
-	adds r0, r2, r1
-	ldr r1, [r0]
-	movs r3, #0x87
-	lsls r3, r3, #3
-	adds r0, r2, r3
-	ldr r0, [r0]
-	cmp r1, r0
-	beq _08017F18
-	ldr r4, _08017E54 @ =0x0000042F
-	adds r1, r2, r4
-	movs r0, #0x11
-	strb r0, [r1]
-	mov r0, ip
-	ldr r1, [r0]
-	movs r2, #0x80
-	lsls r2, r2, #3
-	adds r0, r1, r2
-	ldrh r2, [r0]
-	adds r0, r1, r3
-	strh r2, [r0]
-	subs r3, #0x36
-	adds r0, r1, r3
-	ldrh r0, [r0]
-	adds r4, #0xb
-	b _08017E90
-	.align 2, 0
-_08017E54: .4byte 0x0000042F
-_08017E58:
-	cmp r0, #0x10
-	bne _08017F18
-	movs r1, #0x80
-	lsls r1, r1, #3
-	adds r0, r2, r1
-	ldr r1, [r0]
-	ldr r3, _08017E98 @ =0x0000043C
-	adds r0, r2, r3
-	ldr r0, [r0]
-	cmp r1, r0
-	beq _08017F18
-	movs r4, #0x86
-	lsls r4, r4, #3
-	adds r1, r2, r4
-	movs r0, #0x11
-	strb r0, [r1]
-	mov r0, ip
-	ldr r1, [r0]
-	movs r2, #0x80
-	lsls r2, r2, #3
-	adds r0, r1, r2
-	ldrh r2, [r0]
-	adds r0, r1, r3
-	strh r2, [r0]
-	subs r3, #0x3a
-	adds r0, r1, r3
-	ldrh r0, [r0]
-	adds r4, #0xe
-_08017E90:
-	adds r1, r1, r4
-	strh r0, [r1]
-	b _08017F18
-	.align 2, 0
-_08017E98: .4byte 0x0000043C
-_08017E9C:
-	lsls r0, r3, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x72
-	bgt _08017EC8
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x45
-	bgt _08017EBC
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017EB8 @ =0x00000429
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017EB8: .4byte 0x00000429
-_08017EBC:
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017EC4 @ =0x00000422
-	b _08017F0A
-	.align 2, 0
-_08017EC4: .4byte 0x00000422
-_08017EC8:
-	lsls r0, r4, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x45
-	bgt _08017EE0
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017EDC @ =0x00000426
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017EDC: .4byte 0x00000426
-_08017EE0:
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017EE8 @ =0x00000421
-	b _08017F0A
-	.align 2, 0
-_08017EE8: .4byte 0x00000421
-_08017EEC:
-	lsls r0, r3, #0x10
-	asrs r0, r0, #0x10
-	cmp r0, #0x72
-	bgt _08017F04
-	mov r1, ip
-	ldr r0, [r1]
-	ldr r2, _08017F00 @ =0x00000424
-	adds r1, r0, r2
-	b _08017F0C
-	.align 2, 0
-_08017F00: .4byte 0x00000424
-_08017F04:
-	mov r3, ip
-	ldr r0, [r3]
-	ldr r4, _08017F24 @ =0x00000423
-_08017F0A:
-	adds r1, r0, r4
-_08017F0C:
-	movs r0, #0
-	ldrsb r0, [r1, r0]
-	cmp r0, #0
-	bgt _08017F18
-	movs r0, #0x18
-	strb r0, [r1]
-_08017F18:
-	add sp, #4
-	pop {r3}
-	mov r8, r3
-	pop {r4, r5, r6, r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_08017F24: .4byte 0x00000423
+    .section .text17F28
 
 	thumb_func_start sub_17F28
 sub_17F28: @ 0x08017F28
diff --git a/expected_objs/sub_179D0.o b/expected_objs/sub_179D0.o
deleted file mode 100644
index 8bf272af7736a1c60fb05afe11b3997b9a54bcb1..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/expected_objs/sub_17C1C.o b/expected_objs/sub_17C1C.o
deleted file mode 100644
index 659ba292b571feaedc47c61aca31e0b7e37f026c..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/include/global.h b/include/global.h
index dcfc520..3289b49 100644
--- a/include/global.h
+++ b/include/global.h
@@ -393,8 +393,7 @@ struct PinballGame
     /*0x3FA*/ s16 unk3FA;
     /*0x3FC*/ s16 unk3FC;
     /*0x3FE*/ u8 filler3FE[0x2];
-    /*0x400*/ s16 unk400;
-    /*0x402*/ s16 unk402;
+    /*0x400*/ struct Vector16 unk400;
     /*0x404*/ s8 unk404;
     /*0x405*/ u8 unk405;
     /*0x406*/ s8 unk406;
@@ -410,7 +409,11 @@ struct PinballGame
     /*0x41C*/ s8 unk41C[4];
     /*0x420*/ s8 unk420[10];
     /*0x42A*/ u8 unk42A[7];
-    /*0x431*/ u8 filler431[0x21];
+    /*0x431*/ u8 filler431[0x3];
+    /*0x434*/ struct Vector16 unk434;
+    /*0x438*/ struct Vector16 unk438;
+    /*0x43C*/ struct Vector16 unk43C;
+    /*0x440*/ u8 filler440[0x12];
     /*0x452*/ u16 unk452;
     /*0x454*/ u8 filler454[0xD8];
     /*0x52C*/ s8 unk52C;
diff --git a/ld_script.txt b/ld_script.txt
index 0ec1bcb..6cc3034 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -48,7 +48,7 @@ SECTIONS
         src/rom_13D24.o(.text);
         asm/rom_11B9C.o(.text);
         src/rom_17634.o(.text);
-        asm/rom_11B9C.o(.text17C1C);
+        asm/rom_11B9C.o(.text17F28);
         src/rom_18784.o(.text);
         src/rom_19B64.o(.text);
         src/rom_19D04.o(.text);
diff --git a/src/rom_17634.c b/src/rom_17634.c
index f1c96b7..816e0a1 100644
--- a/src/rom_17634.c
+++ b/src/rom_17634.c
@@ -286,4 +286,155 @@ void sub_179D0(u8 arg0, u16 *arg1, u16 *arg2)
         }
         break;
     }
+}
+
+void sub_17C1C(struct Vector16 *arg0)
+{
+    struct Vector16 vec1;
+    struct Vector16 vec2;
+    s16 x, y;
+    u16 sp00;
+    u8 sp02;
+    s16 unk0;
+    s32 unk1;
+    s32 unk2;
+    u32 some_enum;
+
+    gCurrentPinballGame->unk3F8 = 1;
+    vec1.x = arg0->x / 8;
+    vec1.y = arg0->y / 8;
+    vec2.x = arg0->x % 8;
+    vec2.y = arg0->y % 8;
+    unk1 = vec1.y / 64;
+    unk2 = gCurrentPinballGame->unk24;
+    vec1.y %= 64;
+    unk0 = gUnknown_02031520.unk14.unk38[unk2 + unk1][vec1.y * 64 + vec1.x];
+    sp00 = gUnknown_02031520.unk14.unk48[unk2 + unk1][unk0 * 64 + vec2.y * 8 + vec2.x];
+    sp02 = gUnknown_02031520.unk14.unk58[unk2 + unk1][unk0 * 64 + vec2.y * 8 + vec2.x];
+
+    some_enum = (sp02 >> 2) >> 2;
+
+    x = gCurrentPinballGame->unk400.x;
+    y = gCurrentPinballGame->unk400.y;
+
+    switch (some_enum)
+    {
+    case 8:
+        if (x <= 0x72)
+        {
+            if (y <= 0x38)
+            {
+                if (gCurrentPinballGame->unk41C[0] <= 0)
+                    gCurrentPinballGame->unk41C[0] = 0x18;
+            }
+            else
+            {
+                if (gCurrentPinballGame->unk41C[1] <= 0)
+                    gCurrentPinballGame->unk41C[1] = 0x18;
+            }
+        }
+        else if (y <= 0x63)
+        {
+            if (gCurrentPinballGame->unk41C[3] <= 0)
+                gCurrentPinballGame->unk41C[3] = 0x18;
+        }
+        else
+        {
+            if (gCurrentPinballGame->unk41C[2] <= 0)
+                gCurrentPinballGame->unk41C[2] = 0x18;
+        }
+        break;
+    case 9:
+        if (x <= 0x72)
+        {
+            if (y <= 0x45)
+            {
+                if (gCurrentPinballGame->unk420[7] <= 0)
+                    gCurrentPinballGame->unk420[7] = 0x18;
+            }
+            else
+            {
+                if (gCurrentPinballGame->unk420[5] <= 0)
+                    gCurrentPinballGame->unk420[5] = 0x18;
+            }
+        }
+        else if (y <= 0x45)
+        {
+            if (gCurrentPinballGame->unk420[8] <= 0)
+                gCurrentPinballGame->unk420[8] = 0x18;
+        }
+        else
+        {
+            if (gCurrentPinballGame->unk420[0] <= 0)
+                gCurrentPinballGame->unk420[0] = 0x18;
+        }
+        break;
+    case 10:
+        gCurrentPinballGame->unk3F8 = 0;
+        if (gCurrentPinballGame->unk412 == 0)
+        {
+            if (gCurrentPinballGame->unk400.x != gCurrentPinballGame->unk434.x || gCurrentPinballGame->unk400.y != gCurrentPinballGame->unk434.y)
+            {
+                gCurrentPinballGame->unk42A[4] = 0x11;
+                gCurrentPinballGame->unk434.x = gCurrentPinballGame->unk400.x;
+                gCurrentPinballGame->unk434.y = gCurrentPinballGame->unk400.y;
+            }
+        }
+        else if (gCurrentPinballGame->unk412 == 8)
+        {
+            if (gCurrentPinballGame->unk400.x != gCurrentPinballGame->unk438.x || gCurrentPinballGame->unk400.y != gCurrentPinballGame->unk438.y)
+            {
+                gCurrentPinballGame->unk42A[5] = 0x11;
+                gCurrentPinballGame->unk438.x = gCurrentPinballGame->unk400.x;
+                gCurrentPinballGame->unk438.y = gCurrentPinballGame->unk400.y;
+            }
+        }
+        else if (gCurrentPinballGame->unk412 == 16)
+        {
+            if (gCurrentPinballGame->unk400.x != gCurrentPinballGame->unk43C.x || gCurrentPinballGame->unk400.y != gCurrentPinballGame->unk43C.y)
+            {
+                gCurrentPinballGame->unk42A[6] = 0x11;
+                gCurrentPinballGame->unk43C.x = gCurrentPinballGame->unk400.x;
+                gCurrentPinballGame->unk43C.y = gCurrentPinballGame->unk400.y;
+            }
+        }
+        break;
+    case 11:
+        if (x <= 0x72)
+        {
+            if (y <= 0x45)
+            {
+                if (gCurrentPinballGame->unk420[9] <= 0)
+                    gCurrentPinballGame->unk420[9] = 0x18;
+            }
+            else
+            {
+                if (gCurrentPinballGame->unk420[2] <= 0)
+                    gCurrentPinballGame->unk420[2] = 0x18;
+            }
+        }
+        else if (y <= 0x45)
+        {
+            if (gCurrentPinballGame->unk420[6] <= 0)
+                gCurrentPinballGame->unk420[6] = 0x18;
+        }
+        else
+        {
+            if (gCurrentPinballGame->unk420[1] <= 0)
+                gCurrentPinballGame->unk420[1] = 0x18;
+        }
+        break;
+    case 12:
+        if (x <= 0x72)
+        {
+            if (gCurrentPinballGame->unk420[4] <= 0)
+                gCurrentPinballGame->unk420[4] = 0x18;
+        }
+        else
+        {
+            if (gCurrentPinballGame->unk420[3] <= 0)
+                gCurrentPinballGame->unk420[3] = 0x18;
+        }
+        break;
+    }
 }
\ No newline at end of file
diff --git a/src/rom_356A0.c b/src/rom_356A0.c
index aa3779a..9a1bb04 100644
--- a/src/rom_356A0.c
+++ b/src/rom_356A0.c
@@ -183,7 +183,7 @@ void sub_35860(void)
         gCurrentPinballGame->unk42A[i] = 0;
 
     gCurrentPinballGame->unk1A = 0;
-    gCurrentPinballGame->unk402 = gCurrentPinballGame->unk3EA / 10 + 58;
+    gCurrentPinballGame->unk400.y = gCurrentPinballGame->unk3EA / 10 + 58;
     sub_38218();
     gCurrentPinballGame->unk387 = 1;
     sub_35D54();
@@ -892,8 +892,8 @@ void sub_36CB4(void)
             gCurrentPinballGame->unk387 = 1;
     }
 
-    gCurrentPinballGame->unk400 = (gCurrentPinballGame->unk3E8 / 10) + 120;
-    gCurrentPinballGame->unk402 = (gCurrentPinballGame->unk3EA / 10) + 58;
+    gCurrentPinballGame->unk400.x = (gCurrentPinballGame->unk3E8 / 10) + 120;
+    gCurrentPinballGame->unk400.y = (gCurrentPinballGame->unk3EA / 10) + 58;
     if (gCurrentPinballGame->unk40E > 7)
         gCurrentPinballGame->unk3F7 = 1;
     else if (gCurrentPinballGame->unk3FA > 15)