From 89d938ea9e10a637563a5b4d0d19ddb4535bcf8e Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Thu, 23 Nov 2017 13:53:51 -0500
Subject: [PATCH 1/2] Finish decompiling coins

---
 asm/coins.s   | 74 ---------------------------------------------------
 ld_script.txt |  1 -
 src/coins.c   | 21 +++++++++++----
 3 files changed, 16 insertions(+), 80 deletions(-)
 delete mode 100644 asm/coins.s

diff --git a/asm/coins.s b/asm/coins.s
deleted file mode 100644
index d2b6cbb47e..0000000000
--- a/asm/coins.s
+++ /dev/null
@@ -1,74 +0,0 @@
-	.include "asm/macros.inc"
-	.include "constants/constants.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start GiveCoins
-@ bool8 GiveCoins(u16 toAdd)
-GiveCoins: @ 8145C80
-	push {r4,lr}
-	lsls r0, 16
-	lsrs r4, r0, 16
-	bl GetCoins
-	lsls r0, 16
-	lsrs r1, r0, 16
-	ldr r0, =0x0000270e
-	cmp r1, r0
-	bls _08145C9C
-	movs r0, 0
-	b _08145CC0
-	.pool
-_08145C9C:
-	adds r0, r1, r4
-	cmp r1, r0
-	ble _08145CAC
-	ldr r0, =0x0000270f
-	b _08145CBA
-	.pool
-_08145CAC:
-	lsls r0, 16
-	lsrs r1, r0, 16
-	ldr r0, =0x0000270f
-	cmp r1, r0
-	bls _08145CB8
-	adds r1, r0, 0
-_08145CB8:
-	adds r0, r1, 0
-_08145CBA:
-	bl SetCoins
-	movs r0, 0x1
-_08145CC0:
-	pop {r4}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end GiveCoins
-
-	thumb_func_start TakeCoins
-@ bool8 TakeCoins(u16 toSub)
-TakeCoins: @ 8145CCC
-	push {r4,lr}
-	lsls r0, 16
-	lsrs r4, r0, 16
-	bl GetCoins
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, r4
-	bcs _08145CE2
-	movs r0, 0
-	b _08145CEE
-_08145CE2:
-	subs r0, r4
-	lsls r0, 16
-	lsrs r0, 16
-	bl SetCoins
-	movs r0, 0x1
-_08145CEE:
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end TakeCoins
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/ld_script.txt b/ld_script.txt
index e9c810adcf..5292183c31 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -186,7 +186,6 @@ SECTIONS {
         asm/roulette.o(.text);
         asm/pokedex_cry_screen.o(.text);
         src/coins.o(.text);
-        asm/coins.o(.text);
         asm/landmark.o(.text);
         asm/fldeff_strength.o(.text);
         asm/battle_transition.o(.text);
diff --git a/src/coins.c b/src/coins.c
index e1694b29ca..e313a42219 100644
--- a/src/coins.c
+++ b/src/coins.c
@@ -53,7 +53,6 @@ void SetCoins(u16 coinAmount)
     gSaveBlock1Ptr->coins = coinAmount ^ gSaveBlock2Ptr->encryptionKey;
 }
 
-/* Can't match it lol
 bool8 GiveCoins(u16 toAdd)
 {
     u16 newAmount;
@@ -67,10 +66,22 @@ bool8 GiveCoins(u16 toAdd)
     }
     else
     {
-        newAmount = ownedCoins + toAdd;
-        if (newAmount > MAX_COINS)
-            newAmount = MAX_COINS;
+        ownedCoins += toAdd;
+        if (ownedCoins > MAX_COINS)
+            ownedCoins = MAX_COINS;
+        newAmount = ownedCoins;
     }
     SetCoins(newAmount);
     return TRUE;
-}*/
+}
+
+bool8 TakeCoins(u16 toSub)
+{
+    u16 ownedCoins = GetCoins();
+    if (ownedCoins >= toSub)
+    {
+        SetCoins(ownedCoins - toSub);
+        return TRUE;
+    }
+    return FALSE;
+}

From da04898840083653835db7ca997b6d57f1d3c353 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Thu, 23 Nov 2017 23:10:51 -0500
Subject: [PATCH 2/2] Clean up includes

---
 include/strings.h | 1 +
 src/coins.c       | 7 ++-----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/include/strings.h b/include/strings.h
index 08e2b4bba8..a32ba4c83d 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -82,5 +82,6 @@ extern const u8 gText_NoRegistry[];
 extern const u8 gText_OkayToDeleteFromRegistry[];
 extern const u8 gText_RegisteredDataDeleted[];
 extern const u8 gUnknown_085EA79D[];
+extern const u8 gText_Coins[];
 
 #endif //GUARD_STRINGS_H
diff --git a/src/coins.c b/src/coins.c
index e313a42219..50c31cac01 100644
--- a/src/coins.c
+++ b/src/coins.c
@@ -2,8 +2,9 @@
 #include "coins.h"
 #include "text.h"
 #include "window.h"
-#include "text_window.h"
+#include "strings.h"
 #include "string_util.h"
+#include "new_menu_helpers.h"
 #include "menu.h"
 #include "international_string_util.h"
 
@@ -11,10 +12,6 @@
 
 EWRAM_DATA u8 sCoinsWindowId = 0;
 
-extern void sub_819746C(u8 windowId, bool8 copyToVram);
-
-extern const u8 gText_Coins[];
-
 void PrintCoinsString(u32 coinAmount)
 {
     u32 xAlign;