decompile birch_pc

5 files changed, 125 insertions, 276 deletions

diff --git a/asm/birch_pc.s b/asm/birch_pc.s
deleted file mode 100644
index 2687f29b5..000000000
--- a/asm/birch_pc.s
+++ /dev/null
@@ -1,265 +0,0 @@
-	.include "constants/gba_constants.inc"
-	.include "constants/species_constants.inc"
-	.include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-	
-	thumb_func_start ScriptGetPokedexInfo
-ScriptGetPokedexInfo: @ 810D43C
-	push {lr}
-	ldr r0, _0810D458 @ =gSpecialVar_0x8004
-	ldrh r0, [r0]
-	cmp r0, 0
-	bne _0810D460
-	movs r0, 0
-	bl GetHoennPokedexCount
-	ldr r1, _0810D45C @ =gSpecialVar_0x8005
-	strh r0, [r1]
-	movs r0, 0x1
-	bl GetHoennPokedexCount
-	b _0810D470
-	.align 2, 0
-_0810D458: .4byte gSpecialVar_0x8004
-_0810D45C: .4byte gSpecialVar_0x8005
-_0810D460:
-	movs r0, 0
-	bl GetNationalPokedexCount
-	ldr r1, _0810D480 @ =gSpecialVar_0x8005
-	strh r0, [r1]
-	movs r0, 0x1
-	bl GetNationalPokedexCount
-_0810D470:
-	ldr r1, _0810D484 @ =gSpecialVar_0x8006
-	strh r0, [r1]
-	bl IsNationalPokedexEnabled
-	lsls r0, 16
-	lsrs r0, 16
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0810D480: .4byte gSpecialVar_0x8005
-_0810D484: .4byte gSpecialVar_0x8006
-	thumb_func_end ScriptGetPokedexInfo
-
-	thumb_func_start GetPokedexRatingText
-GetPokedexRatingText: @ 810D488
-	push {lr}
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x9
-	bhi _0810D494
-	b _0810D5EC
-_0810D494:
-	cmp r0, 0x13
-	bhi _0810D4A0
-	ldr r0, _0810D49C @ =gUnknown_081C456A
-	b _0810D5F6
-	.align 2, 0
-_0810D49C: .4byte gUnknown_081C456A
-_0810D4A0:
-	cmp r0, 0x1D
-	bhi _0810D4AC
-	ldr r0, _0810D4A8 @ =gUnknown_081C45B0
-	b _0810D5F6
-	.align 2, 0
-_0810D4A8: .4byte gUnknown_081C45B0
-_0810D4AC:
-	cmp r0, 0x27
-	bhi _0810D4B8
-	ldr r0, _0810D4B4 @ =gUnknown_081C45F9
-	b _0810D5F6
-	.align 2, 0
-_0810D4B4: .4byte gUnknown_081C45F9
-_0810D4B8:
-	cmp r0, 0x31
-	bhi _0810D4C4
-	ldr r0, _0810D4C0 @ =gUnknown_081C4648
-	b _0810D5F6
-	.align 2, 0
-_0810D4C0: .4byte gUnknown_081C4648
-_0810D4C4:
-	cmp r0, 0x3B
-	bhi _0810D4D0
-	ldr r0, _0810D4CC @ =gUnknown_081C467E
-	b _0810D5F6
-	.align 2, 0
-_0810D4CC: .4byte gUnknown_081C467E
-_0810D4D0:
-	cmp r0, 0x45
-	bhi _0810D4DC
-	ldr r0, _0810D4D8 @ =gUnknown_081C46B9
-	b _0810D5F6
-	.align 2, 0
-_0810D4D8: .4byte gUnknown_081C46B9
-_0810D4DC:
-	cmp r0, 0x4F
-	bhi _0810D4E8
-	ldr r0, _0810D4E4 @ =gUnknown_081C46FE
-	b _0810D5F6
-	.align 2, 0
-_0810D4E4: .4byte gUnknown_081C46FE
-_0810D4E8:
-	cmp r0, 0x59
-	bhi _0810D4F4
-	ldr r0, _0810D4F0 @ =gUnknown_081C4747
-	b _0810D5F6
-	.align 2, 0
-_0810D4F0: .4byte gUnknown_081C4747
-_0810D4F4:
-	cmp r0, 0x63
-	bhi _0810D500
-	ldr r0, _0810D4FC @ =gUnknown_081C4780
-	b _0810D5F6
-	.align 2, 0
-_0810D4FC: .4byte gUnknown_081C4780
-_0810D500:
-	cmp r0, 0x6D
-	bhi _0810D50C
-	ldr r0, _0810D508 @ =gUnknown_081C47DF
-	b _0810D5F6
-	.align 2, 0
-_0810D508: .4byte gUnknown_081C47DF
-_0810D50C:
-	cmp r0, 0x77
-	bhi _0810D518
-	ldr r0, _0810D514 @ =gUnknown_081C4828
-	b _0810D5F6
-	.align 2, 0
-_0810D514: .4byte gUnknown_081C4828
-_0810D518:
-	cmp r0, 0x81
-	bhi _0810D524
-	ldr r0, _0810D520 @ =gUnknown_081C4863
-	b _0810D5F6
-	.align 2, 0
-_0810D520: .4byte gUnknown_081C4863
-_0810D524:
-	cmp r0, 0x8B
-	bhi _0810D530
-	ldr r0, _0810D52C @ =gUnknown_081C489C
-	b _0810D5F6
-	.align 2, 0
-_0810D52C: .4byte gUnknown_081C489C
-_0810D530:
-	cmp r0, 0x95
-	bhi _0810D53C
-	ldr r0, _0810D538 @ =gUnknown_081C48EB
-	b _0810D5F6
-	.align 2, 0
-_0810D538: .4byte gUnknown_081C48EB
-_0810D53C:
-	cmp r0, 0x9F
-	bhi _0810D548
-	ldr r0, _0810D544 @ =gUnknown_081C4936
-	b _0810D5F6
-	.align 2, 0
-_0810D544: .4byte gUnknown_081C4936
-_0810D548:
-	cmp r0, 0xA9
-	bhi _0810D554
-	ldr r0, _0810D550 @ =gUnknown_081C49A2
-	b _0810D5F6
-	.align 2, 0
-_0810D550: .4byte gUnknown_081C49A2
-_0810D554:
-	cmp r0, 0xB3
-	bhi _0810D560
-	ldr r0, _0810D55C @ =gUnknown_081C4A06
-	b _0810D5F6
-	.align 2, 0
-_0810D55C: .4byte gUnknown_081C4A06
-_0810D560:
-	cmp r0, 0xBD
-	bhi _0810D56C
-	ldr r0, _0810D568 @ =gUnknown_081C4A4F
-	b _0810D5F6
-	.align 2, 0
-_0810D568: .4byte gUnknown_081C4A4F
-_0810D56C:
-	cmp r0, 0xC7
-	bls _0810D5DA
-	cmp r0, 0xC8
-	bne _0810D5A8
-	ldr r0, _0810D5A4 @ =0x00000199
-	bl SpeciesToNationalPokedexNum
-	lsls r0, 16
-	lsrs r0, 16
-	movs r1, 0x1
-	bl sub_8090D90
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810D5DA
-	movs r0, 0xCD
-	lsls r0, 1
-	bl SpeciesToNationalPokedexNum
-	lsls r0, 16
-	lsrs r0, 16
-	movs r1, 0x1
-	bl sub_8090D90
-	lsls r0, 24
-	cmp r0, 0
-	bne _0810D5DA
-	b _0810D5F4
-	.align 2, 0
-_0810D5A4: .4byte 0x00000199
-_0810D5A8:
-	cmp r0, 0xC9
-	bne _0810D5E8
-	ldr r0, _0810D5E0 @ =0x00000199
-	bl SpeciesToNationalPokedexNum
-	lsls r0, 16
-	lsrs r0, 16
-	movs r1, 0x1
-	bl sub_8090D90
-	lsls r0, 24
-	cmp r0, 0
-	beq _0810D5F4
-	movs r0, 0xCD
-	lsls r0, 1
-	bl SpeciesToNationalPokedexNum
-	lsls r0, 16
-	lsrs r0, 16
-	movs r1, 0x1
-	bl sub_8090D90
-	lsls r0, 24
-	cmp r0, 0
-	beq _0810D5F4
-_0810D5DA:
-	ldr r0, _0810D5E4 @ =gUnknown_081C4A91
-	b _0810D5F6
-	.align 2, 0
-_0810D5E0: .4byte 0x00000199
-_0810D5E4: .4byte gUnknown_081C4A91
-_0810D5E8:
-	cmp r0, 0xCA
-	beq _0810D5F4
-_0810D5EC:
-	ldr r0, _0810D5F0 @ =gUnknown_081C4520
-	b _0810D5F6
-	.align 2, 0
-_0810D5F0: .4byte gUnknown_081C4520
-_0810D5F4:
-	ldr r0, _0810D5FC @ =gUnknown_081C4ADA
-_0810D5F6:
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0810D5FC: .4byte gUnknown_081C4ADA
-	thumb_func_end GetPokedexRatingText
-
-	thumb_func_start ShowPokedexRatingMessage
-ShowPokedexRatingMessage: @ 810D600
-	push {lr}
-	ldr r0, _0810D614 @ =gSpecialVar_0x8004
-	ldrh r0, [r0]
-	bl GetPokedexRatingText
-	bl ShowFieldMessage
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0810D614: .4byte gSpecialVar_0x8004
-	thumb_func_end ShowPokedexRatingMessage
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/include/field_message_box.h b/include/field_message_box.h
index 50d96ccd1..c35aaf595 100644
--- a/include/field_message_box.h
+++ b/include/field_message_box.h
@@ -10,10 +10,10 @@ enum
 };
 
 void InitFieldMessageBox(void);
-bool8 ShowFieldMessage(u8 *message);
-bool8 ShowFieldAutoScrollMessage(u8 *message);
-bool8 unref_sub_8064BB8(u8 *message);
-bool8 unref_sub_8064BD0(u8 *message);
+bool8 ShowFieldMessage(const u8 *message);
+bool8 ShowFieldAutoScrollMessage(const u8 *message);
+bool8 unref_sub_8064BB8(const u8 *message);
+bool8 unref_sub_8064BD0(const u8 *message);
 void HideFieldMessageBox(void);
 u8 GetFieldMessageBoxMode(void);
 bool8 IsFieldMessageBoxHidden(void);
diff --git a/ld_script.txt b/ld_script.txt
index d294a4db4..0cbe9a8e7 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -215,7 +215,7 @@ SECTIONS {
         asm/fldeff_flash.o(.text);
         src/post_battle_event_funcs.o(.text);
         src/time_events.o(.text);
-        asm/birch_pc.o(.text);
+        src/birch_pc.o(.text);
         src/hof_pc.o(.text);
         src/field_specials.o(.text);
         asm/field_specials.o(.text);
diff --git a/src/birch_pc.c b/src/birch_pc.c
new file mode 100644
index 000000000..89eafc0ce
--- /dev/null
+++ b/src/birch_pc.c
@@ -0,0 +1,114 @@
+#include "global.h"
+#include "asm.h"
+#include "event_data.h"
+#include "field_message_box.h"
+#include "pokedex.h"
+#include "species.h"
+
+extern u16 gSpecialVar_0x8004;
+extern u16 gSpecialVar_0x8005;
+extern u16 gSpecialVar_0x8006;
+
+extern const u8 gUnknown_081C4520[];
+extern const u8 gUnknown_081C456A[];
+extern const u8 gUnknown_081C45B0[];
+extern const u8 gUnknown_081C45F9[];
+extern const u8 gUnknown_081C4648[];
+extern const u8 gUnknown_081C467E[];
+extern const u8 gUnknown_081C46B9[];
+extern const u8 gUnknown_081C46FE[];
+extern const u8 gUnknown_081C4747[];
+extern const u8 gUnknown_081C4780[];
+extern const u8 gUnknown_081C47DF[];
+extern const u8 gUnknown_081C4828[];
+extern const u8 gUnknown_081C4863[];
+extern const u8 gUnknown_081C489C[];
+extern const u8 gUnknown_081C48EB[];
+extern const u8 gUnknown_081C4936[];
+extern const u8 gUnknown_081C49A2[];
+extern const u8 gUnknown_081C4A06[];
+extern const u8 gUnknown_081C4A4F[];
+extern const u8 gUnknown_081C4A91[];
+extern const u8 gUnknown_081C4ADA[];
+
+bool16 ScriptGetPokedexInfo(void)
+{
+    if (!gSpecialVar_0x8004)
+    {
+        gSpecialVar_0x8005 = GetHoennPokedexCount(0);
+        gSpecialVar_0x8006 = GetHoennPokedexCount(1);
+    }
+    else
+    {
+        gSpecialVar_0x8005 = GetNationalPokedexCount(0);
+        gSpecialVar_0x8006 = GetNationalPokedexCount(1);
+    }
+
+    return IsNationalPokedexEnabled();
+}
+
+const u8 *GetPokedexRatingText(u16 count)
+{
+    if (count < 10)
+        return gUnknown_081C4520;
+    if (count < 20)
+        return gUnknown_081C456A;
+    if (count < 30)
+        return gUnknown_081C45B0;
+    if (count < 40)
+        return gUnknown_081C45F9;
+    if (count < 50)
+        return gUnknown_081C4648;
+    if (count < 60)
+        return gUnknown_081C467E;
+    if (count < 70)
+        return gUnknown_081C46B9;
+    if (count < 80)
+        return gUnknown_081C46FE;
+    if (count < 90)
+        return gUnknown_081C4747;
+    if (count < 100)
+        return gUnknown_081C4780;
+    if (count < 110)
+        return gUnknown_081C47DF;
+    if (count < 120)
+        return gUnknown_081C4828;
+    if (count < 130)
+        return gUnknown_081C4863;
+    if (count < 140)
+        return gUnknown_081C489C;
+    if (count < 150)
+        return gUnknown_081C48EB;
+    if (count < 160)
+        return gUnknown_081C4936;
+    if (count < 170)
+        return gUnknown_081C49A2;
+    if (count < 180)
+        return gUnknown_081C4A06;
+    if (count < 190)
+        return gUnknown_081C4A4F;
+    if (count < 200)
+        return gUnknown_081C4A91;
+    if (count == 200)
+    {
+        if (sub_8090D90(SpeciesToNationalPokedexNum(SPECIES_JIRACHI), 1)
+         || sub_8090D90(SpeciesToNationalPokedexNum(SPECIES_DEOXYS), 1))
+            return gUnknown_081C4A91;
+        return gUnknown_081C4ADA;
+    }
+    if (count == 201)
+    {
+        if (sub_8090D90(SpeciesToNationalPokedexNum(SPECIES_JIRACHI), 1)
+         && sub_8090D90(SpeciesToNationalPokedexNum(SPECIES_DEOXYS), 1))
+            return gUnknown_081C4A91;
+        return gUnknown_081C4ADA;
+    }
+    if (count == 202)
+        return gUnknown_081C4ADA;
+    return gUnknown_081C4520;
+}
+
+void ShowPokedexRatingMessage(void)
+{
+    ShowFieldMessage(GetPokedexRatingText(gSpecialVar_0x8004));
+}
diff --git a/src/field_message_box.c b/src/field_message_box.c
index 2a5f90d15..798725540 100644
--- a/src/field_message_box.c
+++ b/src/field_message_box.c
@@ -15,7 +15,7 @@ static u8 sMessageBoxMode;
 static void Task_FieldMessageBox(u8 taskId);
 static void CreateFieldMessageBoxTask(void);
 static void DestroyFieldMessageBoxTask(void);
-static void PrintFieldMessage(u8 *message);
+static void PrintFieldMessage(const u8 *message);
 static void PrintFieldMessageFromStringVar4(void);
 
 void InitFieldMessageBox(void)
@@ -67,7 +67,7 @@ static void DestroyFieldMessageBoxTask(void)
         DestroyTask(taskId);
 }
 
-bool8 ShowFieldMessage(u8 *message)
+bool8 ShowFieldMessage(const u8 *message)
 {
     if (sMessageBoxMode != FIELD_MESSAGE_BOX_HIDDEN)
     {
@@ -81,7 +81,7 @@ bool8 ShowFieldMessage(u8 *message)
     }
 }
 
-bool8 ShowFieldAutoScrollMessage(u8 *message)
+bool8 ShowFieldAutoScrollMessage(const u8 *message)
 {
     if (sMessageBoxMode != FIELD_MESSAGE_BOX_HIDDEN)
     {
@@ -95,14 +95,14 @@ bool8 ShowFieldAutoScrollMessage(u8 *message)
     }
 }
 
-bool8 unref_sub_8064BB8(u8 *message)
+bool8 unref_sub_8064BB8(const u8 *message)
 {
     sMessageBoxMode = FIELD_MESSAGE_BOX_AUTO_SCROLL;
     PrintFieldMessage(message);
     return TRUE;
 }
 
-bool8 unref_sub_8064BD0(u8 *message)
+bool8 unref_sub_8064BD0(const u8 *message)
 {
     if (sMessageBoxMode != FIELD_MESSAGE_BOX_HIDDEN)
     {
@@ -116,7 +116,7 @@ bool8 unref_sub_8064BD0(u8 *message)
     }
 }
 
-static void PrintFieldMessage(u8 *message)
+static void PrintFieldMessage(const u8 *message)
 {
     StringExpandPlaceholders(gStringVar4, message);
     sub_8002EB0(&gFieldMessageBoxWindow, gStringVar4, gMenuTextTileOffset, 2, 15);