start coins decomp

9 files changed, 100 insertions, 156 deletions

diff --git a/asm/coins.s b/asm/coins.s
index afb84c61f..ea55dd85c 100644
--- a/asm/coins.s
+++ b/asm/coins.s
@@ -5,148 +5,8 @@
 
 	.text
 
-	thumb_func_start PrintCoinsString
-@ void PrintCoinsString(s32 coinAmount)
-PrintCoinsString: @ 8145B54
-	push {r4,lr}
-	sub sp, 0xC
-	adds r1, r0, 0
-	ldr r0, =gStringVar1
-	movs r2, 0x1
-	movs r3, 0x4
-	bl ConvertIntToDecimalStringN
-	ldr r4, =gStringVar4
-	ldr r1, =gUnknown_085E8DAB
-	adds r0, r4, 0
-	bl StringExpandPlaceholders
-	movs r0, 0x1
-	adds r1, r4, 0
-	movs r2, 0x40
-	bl GetStringRightAlignXOffset
-	adds r3, r0, 0
-	ldr r0, =gUnknown_0203AB9C
-	ldrb r0, [r0]
-	lsls r3, 24
-	lsrs r3, 24
-	movs r1, 0x1
-	str r1, [sp]
-	movs r1, 0
-	str r1, [sp, 0x4]
-	str r1, [sp, 0x8]
-	movs r1, 0x1
-	adds r2, r4, 0
-	bl PrintTextOnWindow
-	add sp, 0xC
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end PrintCoinsString
-
-	thumb_func_start ShowCoinsWindow
-@ void ShowCoinsWindow(s32 coinAmount, u8 x, u8 y)
-ShowCoinsWindow: @ 8145BAC
-	push {r4,r5,lr}
-	sub sp, 0x18
-	adds r5, r0, 0
-	adds r4, r1, 0
-	adds r3, r2, 0
-	lsls r4, 24
-	lsrs r4, 24
-	lsls r3, 24
-	lsrs r3, 24
-	movs r0, 0x8
-	str r0, [sp]
-	movs r0, 0x2
-	str r0, [sp, 0x4]
-	movs r0, 0xF
-	str r0, [sp, 0x8]
-	ldr r0, =0x00000141
-	str r0, [sp, 0xC]
-	add r0, sp, 0x10
-	movs r1, 0
-	adds r2, r4, 0
-	bl rbox_template_set
-	ldr r4, =gUnknown_0203AB9C
-	add r0, sp, 0x10
-	bl AddWindow
-	strb r0, [r4]
-	ldrb r0, [r4]
-	movs r1, 0
-	bl FillWindowPixelBuffer
-	ldrb r0, [r4]
-	bl PutWindowTilemap
-	ldrb r0, [r4]
-	movs r2, 0x85
-	lsls r2, 2
-	movs r1, 0
-	movs r3, 0xE
-	bl SetWindowBorderStyle
-	adds r0, r5, 0
-	bl PrintCoinsString
-	add sp, 0x18
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end ShowCoinsWindow
-
-	thumb_func_start HideCoinsWindow
-@ void HideCoinsWindow()
-HideCoinsWindow: @ 8145C14
-	push {r4,lr}
-	ldr r4, =gUnknown_0203AB9C
-	ldrb r0, [r4]
-	movs r1, 0x1
-	bl sub_819746C
-	ldrb r0, [r4]
-	bl RemoveWindow
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end HideCoinsWindow
-
-	thumb_func_start GetCoins
-@ u16 GetCoins()
-GetCoins: @ 8145C30
-	ldr r0, =gSaveBlock1Ptr
-	ldr r1, [r0]
-	ldr r0, =0x00000494
-	adds r1, r0
-	ldr r0, =gSaveBlock2Ptr
-	ldr r0, [r0]
-	adds r0, 0xAC
-	ldr r0, [r0]
-	ldrh r1, [r1]
-	eors r0, r1
-	lsls r0, 16
-	lsrs r0, 16
-	bx lr
-	.pool
-	thumb_func_end GetCoins
-
-	thumb_func_start SetCoins
-@ void SetCoins(u16 amount)
-SetCoins: @ 8145C58
-	lsls r0, 16
-	lsrs r0, 16
-	ldr r1, =gSaveBlock1Ptr
-	ldr r2, [r1]
-	ldr r1, =gSaveBlock2Ptr
-	ldr r1, [r1]
-	adds r1, 0xAC
-	ldr r1, [r1]
-	eors r0, r1
-	ldr r1, =0x00000494
-	adds r2, r1
-	strh r0, [r2]
-	bx lr
-	.pool
-	thumb_func_end SetCoins
-
 	thumb_func_start AddCoins
-@ bool8 AddCoins(u16 amount)
+@ bool8 AddCoins(u16 toAdd)
 AddCoins: @ 8145C80
 	push {r4,lr}
 	lsls r0, 16
@@ -187,7 +47,7 @@ _08145CC0:
 	thumb_func_end AddCoins
 
 	thumb_func_start SubtractCoins
-@ bool8 SubtractCoins(u16 amount)
+@ bool8 SubtractCoins(u16 toSub)
 SubtractCoins: @ 8145CCC
 	push {r4,lr}
 	lsls r0, 16
diff --git a/asm/link.s b/asm/link.s
index f925d355a..1fd881b99 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -52968,7 +52968,7 @@ sub_80248B0: @ 80248B0
 	movs r1, 0
 	movs r2, 0x1
 	movs r3, 0x1
-	bl rbox_template_set
+	bl SetWindowTemplateFields
 	ldr r4, =gUnknown_02022C94
 	add r0, sp, 0x10
 	bl AddWindow
diff --git a/asm/money.s b/asm/money.s
index 2dcc06fd7..0d7cf569f 100644
--- a/asm/money.s
+++ b/asm/money.s
@@ -202,7 +202,7 @@ sub_80E52EC: @ 80E52EC
 	add r0, sp, 0x10
 	movs r1, 0
 	adds r2, r4, 0
-	bl rbox_template_set
+	bl SetWindowTemplateFields
 	ldr r4, =gUnknown_02039F98
 	add r0, sp, 0x10
 	bl AddWindow
diff --git a/asm/rom_818E9AC.s b/asm/rom_818E9AC.s
index a8202abaa..e785eebde 100644
--- a/asm/rom_818E9AC.s
+++ b/asm/rom_818E9AC.s
@@ -19160,9 +19160,9 @@ sub_81989B8: @ 81989B8
 	bx r0
 	thumb_func_end sub_81989B8
 
-	thumb_func_start rbox_template_set
-@ void rbox_template_set(WindowTemplate *template, char bg_id, char x, char y, char w, char h, char a7, s16 a8)
-rbox_template_set: @ 8198A24
+	thumb_func_start SetWindowTemplateFields
+@ void SetWindowTemplateFields(WindowTemplate *template, char bg_id, char x, char y, char w, char h, char a7, s16 a8)
+SetWindowTemplateFields: @ 8198A24
 	push {r4-r7,lr}
 	mov r7, r8
 	push {r7}
@@ -19184,7 +19184,7 @@ rbox_template_set: @ 8198A24
 	pop {r4-r7}
 	pop {r0}
 	bx r0
-	thumb_func_end rbox_template_set
+	thumb_func_end SetWindowTemplateFields
 
 	thumb_func_start sub_8198A50
 sub_8198A50: @ 8198A50
@@ -19216,7 +19216,7 @@ sub_8198A50: @ 8198A50
 	str r5, [sp, 0x8]
 	str r6, [sp, 0xC]
 	add r0, sp, 0x10
-	bl rbox_template_set
+	bl SetWindowTemplateFields
 	ldr r0, [sp, 0x10]
 	ldr r1, [sp, 0x14]
 	mov r2, r8
@@ -19263,7 +19263,7 @@ sub_8198AA4: @ 8198AA4
 	adds r1, r4, 0
 	adds r2, r5, 0
 	adds r3, r6, 0
-	bl rbox_template_set
+	bl SetWindowTemplateFields
 	add r0, sp, 0x10
 	bl AddWindow
 	lsls r0, 16
@@ -70120,7 +70120,7 @@ _081B31D2:
 	add r0, sp, 0x14
 	movs r1, 0x2
 	movs r2, 0x13
-	bl rbox_template_set
+	bl SetWindowTemplateFields
 	b _081B3226
 	.pool
 _081B320C:
diff --git a/data/strings.s b/data/strings.s
index bd09345da..94cf82c59 100644
--- a/data/strings.s
+++ b/data/strings.s
@@ -420,7 +420,7 @@ gUnknown_085E8DA0:: @ 85E8DA0
 .string "×{STR_VAR_1}$"
 .string " BERRY$"
 
-gUnknown_085E8DAB:: @ 85E8DAB
+gOtherText_Coins2:: @ 85E8DAB
 
 .string "{STR_VAR_1} COINS$"
 
diff --git a/include/coins.h b/include/coins.h
index 0cfd3db6a..43434b227 100644
--- a/include/coins.h
+++ b/include/coins.h
@@ -1,6 +1,12 @@
 #ifndef GUARD_COINS_H
 #define GUARD_COINS_H
 
-void SetCoins(u16 newValue);
+void PrintCoinsString(u32 coinAmount);
+void ShowCoinsWindow(u32 coinAmount, u8 x, u8 y);
+void HideCoinsWindow(void);
+u16 GetCoins(void);
+void SetCoins(u16 coinAmount);
+bool8 AddCoins(u16 toAdd);
+bool8 SubtractCoins(u16 toSub);
 
 #endif // GUARD_COINS_H
diff --git a/ld_script.txt b/ld_script.txt
index b898ae8a8..eae182d93 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -180,6 +180,7 @@ SECTIONS {
         asm/evolution_scene.o(.text);
         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);
diff --git a/src/coins.c b/src/coins.c
new file mode 100644
index 000000000..f43b5b336
--- /dev/null
+++ b/src/coins.c
@@ -0,0 +1,77 @@
+#include "global.h"
+#include "coins.h"
+#include "text.h"
+#include "window.h"
+#include "text_window.h"
+#include "string_util.h"
+
+#define MAX_COINS 9999
+
+EWRAM_DATA u8 sCoinsWindowId = 0;
+
+extern s32 GetStringRightAlignXOffset(u8 fontId, u8 *str, s32 totalWidth);
+extern void SetWindowTemplateFields(struct WindowTemplate* template, u8 priority, u8 tilemapLeft, u8 tilemapTop, u8 width, u8 height, u8 palNum, u16 baseBlock);
+extern void SetWindowBorderStyle(u8 windowId, bool8 copyToVram, s16 tileStart, s8 palette);
+extern void sub_819746C(u8 windowId, bool8 copyToVram);
+
+extern const u8 gOtherText_Coins2[];
+
+void PrintCoinsString(u32 coinAmount)
+{
+    u32 xAlign;
+
+    ConvertIntToDecimalStringN(gStringVar1, coinAmount, STR_CONV_MODE_RIGHT_ALIGN, 4);
+    StringExpandPlaceholders(gStringVar4, gOtherText_Coins2);
+
+    xAlign = GetStringRightAlignXOffset(1, gStringVar4, 0x40);
+    PrintTextOnWindow(sCoinsWindowId, 1, gStringVar4, xAlign, 1, 0, NULL);
+}
+
+void ShowCoinsWindow(u32 coinAmount, u8 x, u8 y)
+{
+    struct WindowTemplate template;
+    SetWindowTemplateFields(&template, 0, x, y, 8, 2, 0xF, 0x141);
+    sCoinsWindowId = AddWindow(&template);
+    FillWindowPixelBuffer(sCoinsWindowId, 0);
+    PutWindowTilemap(sCoinsWindowId);
+    SetWindowBorderStyle(sCoinsWindowId, FALSE, 0x214, 0xE);
+    PrintCoinsString(coinAmount);
+}
+
+void HideCoinsWindow(void)
+{
+    sub_819746C(sCoinsWindowId, TRUE);
+    RemoveWindow(sCoinsWindowId);
+}
+
+u16 GetCoins(void)
+{
+    return gSaveBlock1Ptr->coins ^ gSaveBlock2Ptr->encryptionKey;
+}
+
+void SetCoins(u16 coinAmount)
+{
+    gSaveBlock1Ptr->coins = coinAmount ^ gSaveBlock2Ptr->encryptionKey;
+}
+
+/* Can't match it lol
+bool8 AddCoins(u16 toAdd)
+{
+    u16 newAmount;
+    u16 ownedCoins = GetCoins();
+    if (ownedCoins >= MAX_COINS)
+        return FALSE;
+    // check overflow, can't have less coins than previously
+    if (ownedCoins > ownedCoins + toAdd)
+    {
+        newAmount = MAX_COINS;
+    }
+    else
+    {
+        newAmount = ownedCoins + toAdd;
+        if (newAmount > MAX_COINS)
+            newAmount = MAX_COINS;
+    }
+    SetCoins(newAmount);
+    return TRUE;
+}*/
diff --git a/sym_ewram.txt b/sym_ewram.txt
index 5c6070ad3..b1f2a8eaf 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -1514,9 +1514,9 @@ gUnknown_0203AB94: @ 203AB94
 gUnknown_0203AB98: @ 203AB98
 	.space 0x4
 
-gUnknown_0203AB9C: @ 203AB9C
-	.space 0x4
-
+    .include "src/coins.o"
+    
+    .align 2
 sTransitionStructPtr: @ 203ABA0
 	.space 0x4