decompile sub_80A34B4 - ClearBag

3 files changed, 139 insertions, 343 deletions

diff --git a/asm/item_menu.s b/asm/item_menu.s
index 3be9e3770..ae746307c 100644
--- a/asm/item_menu.s
+++ b/asm/item_menu.s
@@ -6,347 +6,6 @@
 
 	.text
 
-	thumb_func_start sub_80A34B4
-sub_80A34B4: @ 80A34B4
-	push {lr}
-_080A34B6:
-	bl sub_80A317C
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	beq _080A34D2
-	bl sub_80F9344
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	bne _080A34B6
-	movs r0, 0
-	b _080A34DE
-_080A34D2:
-	ldr r1, _080A34E4 @ =gUnknown_03000700
-	movs r0, 0
-	strb r0, [r1]
-	bl ResetTasks
-	movs r0, 0x1
-_080A34DE:
-	pop {r1}
-	bx r1
-	.align 2, 0
-_080A34E4: .4byte gUnknown_03000700
-	thumb_func_end sub_80A34B4
-
-	thumb_func_start sub_80A34E8
-sub_80A34E8: @ 80A34E8
-	push {lr}
-	bl sub_80F9368
-	ldr r1, _080A3514 @ =REG_BG2CNT
-	ldr r2, _080A3518 @ =0x00000c06
-	adds r0, r2, 0
-	strh r0, [r1]
-	subs r1, 0x2
-	ldr r2, _080A351C @ =0x00000405
-	adds r0, r2, 0
-	strh r0, [r1]
-	subs r1, 0xA
-	movs r2, 0xBA
-	lsls r2, 5
-	adds r0, r2, 0
-	strh r0, [r1]
-	adds r1, 0x50
-	movs r0, 0
-	strh r0, [r1]
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A3514: .4byte REG_BG2CNT
-_080A3518: .4byte 0x00000c06
-_080A351C: .4byte 0x00000405
-	thumb_func_end sub_80A34E8
-
-	thumb_func_start sub_80A3520
-sub_80A3520: @ 80A3520
-	push {lr}
-	ldr r0, _080A353C @ =0x02000000
-	ldr r1, _080A3540 @ =0x0001ffff
-	adds r0, r1
-	ldrb r0, [r0]
-	cmp r0, 0x4
-	bls _080A3530
-	b _080A3624
-_080A3530:
-	lsls r0, 2
-	ldr r1, _080A3544 @ =_080A3548
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080A353C: .4byte 0x02000000
-_080A3540: .4byte 0x0001ffff
-_080A3544: .4byte _080A3548
-	.align 2, 0
-_080A3548:
-	.4byte _080A355C
-	.4byte _080A3570
-	.4byte _080A3588
-	.4byte _080A35C0
-	.4byte _080A3604
-_080A355C:
-	ldr r0, _080A3568 @ =gBagScreen_Gfx
-	ldr r1, _080A356C @ =0x06004000
-	bl LZDecompressVram
-	b _080A35EA
-	.align 2, 0
-_080A3568: .4byte gBagScreen_Gfx
-_080A356C: .4byte 0x06004000
-_080A3570:
-	ldr r0, _080A3580 @ =gUnknown_08E77004
-	ldr r1, _080A3584 @ =gBGTilemapBuffers + 0x1000
-	movs r2, 0x80
-	lsls r2, 3
-	bl CpuSet
-	b _080A35EA
-	.align 2, 0
-_080A3580: .4byte gUnknown_08E77004
-_080A3584: .4byte gBGTilemapBuffers + 0x1000
-_080A3588:
-	ldr r0, _080A35A4 @ =gSaveBlock2
-	ldrb r0, [r0, 0x8]
-	cmp r0, 0
-	beq _080A3598
-	ldr r0, _080A35A8 @ =gUnknown_03000701
-	ldrb r0, [r0]
-	cmp r0, 0x7
-	bne _080A35B0
-_080A3598:
-	ldr r0, _080A35AC @ =gBagScreenMale_Pal
-	movs r1, 0
-	movs r2, 0x40
-	bl LoadCompressedPalette
-	b _080A35EA
-	.align 2, 0
-_080A35A4: .4byte gSaveBlock2
-_080A35A8: .4byte gUnknown_03000701
-_080A35AC: .4byte gBagScreenMale_Pal
-_080A35B0:
-	ldr r0, _080A35BC @ =gBagScreenFemale_Pal
-	movs r1, 0
-	movs r2, 0x40
-	bl LoadCompressedPalette
-	b _080A35EA
-	.align 2, 0
-_080A35BC: .4byte gBagScreenFemale_Pal
-_080A35C0:
-	ldr r0, _080A35D8 @ =gSaveBlock2
-	ldrb r0, [r0, 0x8]
-	cmp r0, 0
-	beq _080A35D0
-	ldr r0, _080A35DC @ =gUnknown_03000701
-	ldrb r0, [r0]
-	cmp r0, 0x7
-	bne _080A35E4
-_080A35D0:
-	ldr r0, _080A35E0 @ =gUnknown_083C1CC8
-	bl LoadCompressedObjectPic
-	b _080A35EA
-	.align 2, 0
-_080A35D8: .4byte gSaveBlock2
-_080A35DC: .4byte gUnknown_03000701
-_080A35E0: .4byte gUnknown_083C1CC8
-_080A35E4:
-	ldr r0, _080A35F8 @ =gUnknown_083C1CD0
-	bl LoadCompressedObjectPic
-_080A35EA:
-	ldr r1, _080A35FC @ =0x02000000
-	ldr r0, _080A3600 @ =0x0001ffff
-	adds r1, r0
-	ldrb r0, [r1]
-	adds r0, 0x1
-	strb r0, [r1]
-	b _080A3624
-	.align 2, 0
-_080A35F8: .4byte gUnknown_083C1CD0
-_080A35FC: .4byte 0x02000000
-_080A3600: .4byte 0x0001ffff
-_080A3604:
-	ldr r0, _080A3618 @ =gUnknown_083C1CD8
-	bl LoadCompressedObjectPalette
-	ldr r0, _080A361C @ =0x02000000
-	ldr r1, _080A3620 @ =0x0001ffff
-	adds r0, r1
-	movs r1, 0
-	strb r1, [r0]
-	movs r0, 0x1
-	b _080A3626
-	.align 2, 0
-_080A3618: .4byte gUnknown_083C1CD8
-_080A361C: .4byte 0x02000000
-_080A3620: .4byte 0x0001ffff
-_080A3624:
-	movs r0, 0
-_080A3626:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80A3520
-
-	thumb_func_start sub_80A362C
-sub_80A362C: @ 80A362C
-	push {r4-r6,lr}
-	movs r4, 0
-	ldr r6, _080A3648 @ =gUnknown_03000701
-	ldr r5, _080A364C @ =gUnknown_03005D10
-_080A3634:
-	ldrb r0, [r6]
-	cmp r0, 0x5
-	bne _080A3650
-	lsls r1, r4, 2
-	adds r0, r1, r5
-	ldrb r0, [r0, 0x2]
-	subs r0, 0x1
-	lsls r0, 24
-	lsrs r3, r0, 24
-	b _080A3656
-	.align 2, 0
-_080A3648: .4byte gUnknown_03000701
-_080A364C: .4byte gUnknown_03005D10
-_080A3650:
-	lsls r1, r4, 2
-	adds r0, r1, r5
-	ldrb r3, [r0, 0x2]
-_080A3656:
-	adds r1, r5
-	ldrb r0, [r1, 0x1]
-	cmp r0, 0
-	beq _080A366C
-	ldrb r2, [r1, 0x3]
-	adds r0, r2
-	cmp r0, r3
-	ble _080A3674
-	subs r0, r3, r2
-	strb r0, [r1, 0x1]
-	b _080A3674
-_080A366C:
-	ldrb r0, [r1]
-	cmp r0, r3
-	bls _080A3674
-	strb r3, [r1]
-_080A3674:
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0x4
-	bls _080A3634
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A362C
-
-	thumb_func_start sub_80A3684
-sub_80A3684: @ 80A3684
-	push {r4,lr}
-	movs r2, 0
-	ldr r4, _080A36B0 @ =gUnknown_02038559
-	ldr r3, _080A36B4 @ =gUnknown_03005D10
-	movs r1, 0
-_080A368E:
-	lsls r0, r2, 2
-	adds r0, r3
-	strb r1, [r0]
-	strb r1, [r0, 0x1]
-	strb r1, [r0, 0x2]
-	strb r1, [r0, 0x3]
-	adds r0, r2, 0x1
-	lsls r0, 16
-	lsrs r2, r0, 16
-	cmp r2, 0x4
-	bls _080A368E
-	movs r0, 0
-	strb r0, [r4]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A36B0: .4byte gUnknown_02038559
-_080A36B4: .4byte gUnknown_03005D10
-	thumb_func_end sub_80A3684
-
-	thumb_func_start sub_80A36B8
-sub_80A36B8: @ 80A36B8
-	push {r4-r7,lr}
-	mov r7, r8
-	push {r7}
-	adds r6, r0, 0
-	ldr r0, [sp, 0x18]
-	lsls r1, 24
-	lsrs r1, 24
-	mov r8, r1
-	lsls r2, 24
-	lsls r3, 24
-	lsrs r3, 24
-	mov r12, r3
-	lsls r0, 24
-	lsrs r0, 24
-	lsrs r2, 24
-	adds r0, r2, r0
-	cmp r2, r0
-	bgt _080A370A
-	adds r7, r0, 0
-_080A36DE:
-	mov r1, r8
-	mov r3, r12
-	adds r0, r1, r3
-	adds r4, r2, 0x1
-	cmp r1, r0
-	bgt _080A3702
-	lsls r3, r2, 5
-	movs r5, 0
-	adds r2, r0, 0
-_080A36F0:
-	adds r0, r1, r3
-	lsls r0, 1
-	adds r0, r6
-	strh r5, [r0]
-	adds r0, r1, 0x1
-	lsls r0, 16
-	lsrs r1, r0, 16
-	cmp r1, r2
-	ble _080A36F0
-_080A3702:
-	lsls r0, r4, 16
-	lsrs r2, r0, 16
-	cmp r2, r7
-	ble _080A36DE
-_080A370A:
-	pop {r3}
-	mov r8, r3
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80A36B8
-
-	thumb_func_start ClearBag
-ClearBag: @ 80A3714
-	push {r4,r5,lr}
-	movs r4, 0
-	ldr r5, _080A373C @ =gBagPockets
-_080A371A:
-	lsls r1, r4, 3
-	adds r1, r5
-	ldr r0, [r1]
-	ldrb r1, [r1, 0x4]
-	bl ClearItemSlots
-	adds r0, r4, 0x1
-	lsls r0, 16
-	lsrs r4, r0, 16
-	cmp r4, 0x4
-	bls _080A371A
-	bl sub_80A3684
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080A373C: .4byte gBagPockets
-	thumb_func_end ClearBag
-
 	thumb_func_start sub_80A3740
 sub_80A3740: @ 80A3740
 	push {lr}
diff --git a/include/graphics.h b/include/graphics.h
index c3fe20996..fc0cc3adf 100644
--- a/include/graphics.h
+++ b/include/graphics.h
@@ -2435,4 +2435,10 @@ extern const u8 gMonFrontPic_UnownQuestionMark[];
 extern const u8 gMonBackPic_UnownQuestionMark[];
 extern const u8 gMonIcon_UnownQuestionMark[];
 
+// data/graphics.s
+extern const u8 gBagScreen_Gfx[];
+extern const u8 gBagScreenMale_Pal[];
+extern const u8 gBagScreenFemale_Pal[];
+extern const u16 gUnknown_08E77004[];
+
 #endif  // GUARD_GRAPHICS_H
diff --git a/src/item_menu.c b/src/item_menu.c
index 0ce37f908..bbb91296f 100644
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -1,4 +1,6 @@
 #include "global.h"
+#include "decompress.h"
+#include "graphics.h"
 #include "item.h"
 #include "main.h"
 #include "menu.h"
@@ -16,12 +18,15 @@ struct UnknownStruct1
 {
     u8 unk0;
     u8 unk1;
+    u8 unk2;
+    u8 unk3;
 };
 
 extern s8 gUnknown_02038559;
 extern u8 gUnknown_0203855A;
 extern u8 gUnknown_0203855B;
 extern u8 gUnknown_0203855C;
+extern u8 gUnknown_03000700;
 extern u8 gUnknown_03000701;
 extern struct UnknownStruct1 gUnknown_03005D10[];
 extern struct ItemSlot *gUnknown_03005D24;
@@ -30,8 +35,12 @@ extern void gpu_pal_allocator_reset__manage_upper_four(void);
 extern void sub_80F9020(void);
 extern void sub_80F9988();
 
+extern const struct CompressedSpriteSheet gUnknown_083C1CC8;
+extern const struct CompressedSpriteSheet gUnknown_083C1CD0;
+extern const struct CompressedSpritePalette gUnknown_083C1CD8;
+
 void sub_80A34E8(void);
-u8 sub_80A3520(void);
+bool8 sub_80A3520(void);
 void sub_80A362C(void);
 void sub_80A3740(void);
 void sub_80A39B8(u16 *, u8);
@@ -116,7 +125,7 @@ bool8 sub_80A317C(void)
         gMain.state++;
         break;
     case 6:
-        if (sub_80A3520() == 0)
+        if (sub_80A3520() == FALSE)
             break;
         gMain.state++;
         break;
@@ -206,3 +215,125 @@ bool8 sub_80A317C(void)
     }
     return FALSE;
 }
+
+bool8 sub_80A34B4(void)
+{
+    do
+    {
+        if (sub_80A317C() == TRUE)
+        {
+            gUnknown_03000700 = 0;
+            ResetTasks();
+            return TRUE;
+        }
+    } while (sub_80F9344() != 1);
+    return FALSE;
+}
+
+void sub_80A34E8(void)
+{
+    sub_80F9368();
+    REG_BG2CNT = 0x0C06;
+    REG_BG1CNT = 0x0405;
+    REG_DISPCNT = 0x1740;
+    REG_BLDCNT = 0;
+}
+
+bool8 sub_80A3520(void)
+{
+    switch (ewram[0x1FFFF])
+    {
+    case 0:
+        LZDecompressVram(gBagScreen_Gfx, (void *)(VRAM + 0x4000));
+        ewram[0x1FFFF]++;
+        break;
+    case 1:
+        CpuCopy16(gUnknown_08E77004, gBGTilemapBuffers[2], 0x800);
+        ewram[0x1FFFF]++;
+        break;
+    case 2:
+        if (gSaveBlock2.playerGender == MALE || gUnknown_03000701 == 7)
+            LoadCompressedPalette(gBagScreenMale_Pal, 0, 64);
+        else
+            LoadCompressedPalette(gBagScreenFemale_Pal, 0, 64);
+        ewram[0x1FFFF]++;
+        break;
+    case 3:
+        if (gSaveBlock2.playerGender == MALE || gUnknown_03000701 == 7)
+            LoadCompressedObjectPic(&gUnknown_083C1CC8);
+        else
+            LoadCompressedObjectPic(&gUnknown_083C1CD0);
+        ewram[0x1FFFF]++;
+        break;
+    case 4:
+        LoadCompressedObjectPalette(&gUnknown_083C1CD8);
+        ewram[0x1FFFF] = 0;
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void sub_80A362C(void)
+{
+    u8 i;
+
+    for (i = 0; i < 5; i++)
+    {
+        u8 r3;
+
+        if (gUnknown_03000701 == 5)
+            r3 = gUnknown_03005D10[i].unk2 - 1;
+        else
+            r3 = gUnknown_03005D10[i].unk2;
+
+        if (gUnknown_03005D10[i].unk1 != 0)
+        {
+            if (gUnknown_03005D10[i].unk1 + gUnknown_03005D10[i].unk3 > r3)
+                gUnknown_03005D10[i].unk1 = r3 - gUnknown_03005D10[i].unk3;
+        }
+        else
+        {
+            if (gUnknown_03005D10[i].unk0 > r3)
+                gUnknown_03005D10[i].unk0 = r3;
+        }
+    }
+}
+
+void sub_80A3684(void)
+{
+    u16 i;
+
+    for (i = 0; i < 5; i++)
+    {
+        gUnknown_03005D10[i].unk0 = 0;
+        gUnknown_03005D10[i].unk1 = 0;
+        gUnknown_03005D10[i].unk2 = 0;
+        gUnknown_03005D10[i].unk3 = 0;
+    }
+    gUnknown_02038559 = 0;
+}
+
+void sub_80A36B8(u16 *a, u8 b, u8 c, u8 d, u8 e)
+{
+    u16 i;
+    u16 j;
+
+    for (i = c; i <= c + e; i++)
+    {
+        for (j = b; j <= b + d; j++)
+        {
+            u32 index = j + i * 32;
+
+            a[index] = 0;
+        }
+    }
+}
+
+void ClearBag(void)
+{
+    u16 i;
+
+    for (i = 0; i < 5; i++)
+        ClearItemSlots(gBagPockets[i].itemSlots, gBagPockets[i].capacity);
+    sub_80A3684();
+}