decompile coins.c (#85)

* decompile coins.c

* fix PrintCoins

3 files changed, 88 insertions, 252 deletions

diff --git a/asm/coins.s b/asm/coins.s
deleted file mode 100644
index 9393897d6..000000000
--- a/asm/coins.s
+++ /dev/null
@@ -1,251 +0,0 @@
-	.include "constants/gba_constants.inc"
-	.include "constants/species_constants.inc"
-	.include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-	thumb_func_start UpdateCoinsWindow
-UpdateCoinsWindow: @ 811A704
-	push {r4,lr}
-	adds r4, r1, 0
-	adds r3, r2, 0
-	lsls r4, 24
-	lsls r3, 24
-	movs r1, 0x80
-	lsls r1, 18
-	adds r4, r1
-	lsrs r4, 24
-	movs r1, 0x80
-	lsls r1, 17
-	adds r3, r1
-	lsrs r3, 24
-	movs r1, 0x4
-	adds r2, r4, 0
-	bl PrintCoins
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end UpdateCoinsWindow
-
-	thumb_func_start ShowCoinsWindow
-ShowCoinsWindow: @ 811A72C
-	push {r4-r6,lr}
-	mov r6, r8
-	push {r6}
-	mov r8, r0
-	adds r4, r1, 0
-	adds r3, r2, 0
-	lsls r4, 24
-	lsls r3, 24
-	lsrs r6, r4, 24
-	movs r0, 0x90
-	lsls r0, 20
-	adds r4, r0
-	lsrs r4, 24
-	lsrs r5, r3, 24
-	movs r0, 0xC0
-	lsls r0, 18
-	adds r3, r0
-	lsrs r3, 24
-	adds r0, r6, 0
-	adds r1, r5, 0
-	adds r2, r4, 0
-	bl MenuDrawTextWindow
-	mov r0, r8
-	adds r1, r6, 0
-	adds r2, r5, 0
-	bl UpdateCoinsWindow
-	pop {r3}
-	mov r8, r3
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	thumb_func_end ShowCoinsWindow
-
-	thumb_func_start HideCoinsWindow
-HideCoinsWindow: @ 811A770
-	push {r4,lr}
-	adds r2, r0, 0
-	adds r3, r1, 0
-	lsls r2, 24
-	lsls r3, 24
-	lsrs r0, r2, 24
-	movs r1, 0x90
-	lsls r1, 20
-	adds r2, r1
-	lsrs r2, 24
-	lsrs r1, r3, 24
-	movs r4, 0xC0
-	lsls r4, 18
-	adds r3, r4
-	lsrs r3, 24
-	bl MenuZeroFillWindowRect
-	pop {r4}
-	pop {r0}
-	bx r0
-	thumb_func_end HideCoinsWindow
-
-	thumb_func_start PrintCoins
-PrintCoins: @ 811A798
-	push {r4-r7,lr}
-	sub sp, 0x10
-	adds r4, r0, 0
-	lsls r1, 24
-	lsrs r1, 24
-	adds r5, r1, 0
-	lsls r2, 24
-	lsrs r6, r2, 24
-	lsls r3, 24
-	lsrs r7, r3, 24
-	mov r0, sp
-	adds r1, r4, 0
-	bl ConvertIntToDecimalString
-	lsls r1, r5, 1
-	adds r1, r5
-	lsls r1, 1
-	adds r1, 0x21
-	adds r0, r5, 0x2
-	lsls r0, 3
-	subs r1, r0
-	lsls r1, 24
-	lsrs r0, r1, 27
-	subs r0, r6, r0
-	lsls r0, 24
-	lsrs r6, r0, 24
-	movs r0, 0xE0
-	lsls r0, 19
-	ands r0, r1
-	lsrs r1, r0, 24
-	ldr r4, _0811A824 @ =gStringVar1
-	cmp r1, 0
-	beq _0811A7EA
-	movs r0, 0xFC
-	strb r0, [r4]
-	movs r0, 0x11
-	strb r0, [r4, 0x1]
-	movs r0, 0x8
-	subs r0, r1
-	strb r0, [r4, 0x2]
-	adds r4, 0x3
-_0811A7EA:
-	movs r0, 0xFC
-	strb r0, [r4]
-	movs r0, 0x11
-	strb r0, [r4, 0x1]
-	mov r0, sp
-	bl StringLength
-	lsls r0, 16
-	lsrs r0, 16
-	subs r0, r5, r0
-	lsls r1, r0, 1
-	adds r1, r0
-	lsls r1, 1
-	strb r1, [r4, 0x2]
-	adds r4, 0x3
-	adds r0, r4, 0
-	mov r1, sp
-	bl StringCopy
-	ldr r0, _0811A828 @ =gOtherText_Coins2
-	adds r1, r6, 0
-	adds r2, r7, 0
-	bl MenuPrint
-	add sp, 0x10
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0811A824: .4byte gStringVar1
-_0811A828: .4byte gOtherText_Coins2
-	thumb_func_end PrintCoins
-
-	thumb_func_start GetCoins
-GetCoins: @ 811A82C
-	ldr r0, _0811A838 @ =gSaveBlock1
-	ldr r1, _0811A83C @ =0x00000494
-	adds r0, r1
-	ldrh r0, [r0]
-	bx lr
-	.align 2, 0
-_0811A838: .4byte gSaveBlock1
-_0811A83C: .4byte 0x00000494
-	thumb_func_end GetCoins
-
-	thumb_func_start GiveCoins
-GiveCoins: @ 811A840
-	push {r4,lr}
-	lsls r0, 16
-	lsrs r4, r0, 16
-	bl GetCoins
-	lsls r0, 16
-	ldr r1, _0811A858 @ =0x270e0000
-	cmp r0, r1
-	bls _0811A85C
-	movs r0, 0
-	b _0811A88C
-	.align 2, 0
-_0811A858: .4byte 0x270e0000
-_0811A85C:
-	ldr r0, _0811A874 @ =gSaveBlock1
-	ldr r1, _0811A878 @ =0x00000494
-	adds r3, r0, r1
-	ldrh r1, [r3]
-	adds r2, r4, r1
-	lsls r0, r2, 16
-	lsrs r0, 16
-	cmp r1, r0
-	bls _0811A880
-	ldr r0, _0811A87C @ =0x0000270f
-	strh r0, [r3]
-	b _0811A88A
-	.align 2, 0
-_0811A874: .4byte gSaveBlock1
-_0811A878: .4byte 0x00000494
-_0811A87C: .4byte 0x0000270f
-_0811A880:
-	strh r2, [r3]
-	ldr r1, _0811A894 @ =0x0000270f
-	cmp r0, r1
-	bls _0811A88A
-	strh r1, [r3]
-_0811A88A:
-	movs r0, 0x1
-_0811A88C:
-	pop {r4}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0811A894: .4byte 0x0000270f
-	thumb_func_end GiveCoins
-
-	thumb_func_start TakeCoins
-TakeCoins: @ 811A898
-	push {r4,lr}
-	lsls r0, 16
-	lsrs r4, r0, 16
-	bl GetCoins
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, r4
-	bcs _0811A8AE
-	movs r0, 0
-	b _0811A8BC
-_0811A8AE:
-	ldr r1, _0811A8C4 @ =gSaveBlock1
-	ldr r0, _0811A8C8 @ =0x00000494
-	adds r1, r0
-	ldrh r0, [r1]
-	subs r0, r4
-	strh r0, [r1]
-	movs r0, 0x1
-_0811A8BC:
-	pop {r4}
-	pop {r1}
-	bx r1
-	.align 2, 0
-_0811A8C4: .4byte gSaveBlock1
-_0811A8C8: .4byte 0x00000494
-	thumb_func_end TakeCoins
-
-	.align 2, 0 @ Don't pad with nop.
diff --git a/ld_script.txt b/ld_script.txt
index 64b7d5484..316f5d524 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -164,7 +164,7 @@ SECTIONS {
         asm/evolution_scene.o(.text);
         asm/roulette.o(.text);
         asm/pokedex_cry_screen.o(.text);
-        asm/coins.o(.text);
+		src/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
new file mode 100644
index 000000000..871d1873c
--- /dev/null
+++ b/src/coins.c
@@ -0,0 +1,87 @@
+#include "global.h"
+#include "menu.h"
+#include "string_util.h"
+
+#define MAX_COINS 9999
+
+extern u8 gOtherText_Coins2[];
+
+void PrintCoins(s32, u8, u8, u8);
+
+void UpdateCoinsWindow(s32 a, u8 b, u8 c)
+{
+    PrintCoins(a, 4, b + 2, c + 1);
+}
+
+void ShowCoinsWindow(u32 a, u8 b, u8 c)
+{
+    MenuDrawTextWindow(b, c, b + 9, c + 3);
+    UpdateCoinsWindow(a, b, c);
+}
+
+void HideCoinsWindow(u8 a, u8 b)
+{
+    MenuZeroFillWindowRect(a, b, a + 9, b + 3);
+}
+
+void PrintCoins(s32 a, u8 b, u8 c, u8 d)
+{
+    u8 string[16];
+    u8 *ptr;
+    u8 r1;
+    u8 r6;
+    u8 foo;
+    
+    ConvertIntToDecimalString(string, a);
+    r1 = (b * 6 + 0x21 - 8 * (b + 2));
+    c = c - r1 / 8;
+    foo = r1 % 8;
+    ptr = gStringVar1;
+    if(foo)
+    {
+        ptr[0] = 0xFC;
+        ptr[1] = 0x11;
+        ptr[2] = 8 - (foo);
+        ptr += 3;
+    }
+    ptr[0] = 0xFC;
+    ptr[1] = 0x11;
+    ptr[2] = (b - StringLength(string)) * 6;
+    ptr += 3;
+    StringCopy(ptr, string);
+    MenuPrint(gOtherText_Coins2, c, d);
+}
+
+u16 GetCoins(void)
+{
+    return gSaveBlock1.coins;
+}
+
+bool8 GiveCoins(u16 coins)
+{
+    u32 newCoins;
+    
+    if(GetCoins() >= MAX_COINS)
+        return FALSE;
+    newCoins = coins + gSaveBlock1.coins;
+    if(gSaveBlock1.coins > (u16)newCoins)
+        gSaveBlock1.coins = MAX_COINS;
+    else
+    {
+        gSaveBlock1.coins = newCoins;
+        if((u16)newCoins > MAX_COINS)
+            gSaveBlock1.coins = MAX_COINS;
+    }
+    return TRUE;
+}
+
+bool8 TakeCoins(u16 coins)
+{
+    if(GetCoins() >= coins)
+    {
+        gSaveBlock1.coins -= coins;
+        return TRUE;
+    }
+    else
+        return FALSE;
+}
\ No newline at end of file