1 files changed, 140 insertions, 0 deletions
diff --git a/src/money.c b/src/money.c
new file mode 100644
index 000000000..6d9a0fce9
--- /dev/null
+++ b/src/money.c
@@ -0,0 +1,140 @@
+#include "global.h"
+#include "event_data.h"
+#include "text.h"
+#include "string_util.h"
+#include "menu.h"
+#include "text_window.h"
+
+extern const u8 gText_PokedollarVar1[];
+extern const u8 gUnknown_8419CE7[];
+
+#define MAX_MONEY 999999
+
+EWRAM_DATA static u8 sMoneyBoxWindowId = 0;
+
+u32 GetMoney(u32* moneyPtr)
+{
+    return *moneyPtr ^ gSaveBlock2Ptr->encryptionKey;
+}
+
+void SetMoney(u32* moneyPtr, u32 newValue)
+{
+    *moneyPtr = gSaveBlock2Ptr->encryptionKey ^ newValue;
+}
+
+bool8 IsEnoughMoney(u32* moneyPtr, u32 cost)
+{
+    if (GetMoney(moneyPtr) >= cost)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+void AddMoney(u32* moneyPtr, u32 toAdd)
+{
+    u32 toSet = GetMoney(moneyPtr);
+
+    // can't have more money than MAX
+    if (toSet + toAdd > MAX_MONEY)
+    {
+        toSet = MAX_MONEY;
+    }
+    else
+    {
+        toSet += toAdd;
+        // check overflow, can't have less money after you receive more
+        if (toSet < GetMoney(moneyPtr))
+            toSet = MAX_MONEY;
+    }
+
+    SetMoney(moneyPtr, toSet);
+}
+
+void RemoveMoney(u32* moneyPtr, u32 toSub)
+{
+    u32 toSet = GetMoney(moneyPtr);
+
+    // can't subtract more than you already have
+    if (toSet < toSub)
+        toSet = 0;
+    else
+        toSet -= toSub;
+
+    SetMoney(moneyPtr, toSet);
+}
+
+bool8 IsEnoughForCostInVar0x8005(void)
+{
+    return IsEnoughMoney(&gSaveBlock1Ptr->money, gSpecialVar_0x8005);
+}
+
+void SubtractMoneyFromVar0x8005(void)
+{
+    RemoveMoney(&gSaveBlock1Ptr->money, gSpecialVar_0x8005);
+}
+
+void PrintMoneyAmountInMoneyBox(u8 windowId, int amount, u8 speed)
+{
+    u8 *txtPtr;
+    s32 strLength;
+
+    ConvertIntToDecimalStringN(gStringVar1, amount, STR_CONV_MODE_LEFT_ALIGN, 6);
+
+    strLength = 6 - StringLength(gStringVar1);
+    txtPtr = gStringVar4;
+
+    while (strLength-- != 0)
+        *(txtPtr++) = 0;
+
+    StringExpandPlaceholders(txtPtr, gText_PokedollarVar1);
+    AddTextPrinterParameterized(windowId, 0, gStringVar4, 64 - GetStringWidth(0, gStringVar4, 0), 0xC, speed, NULL);
+}
+
+void PrintMoneyAmount(u8 windowId, u8 x, u8 y, int amount, u8 speed)
+{
+    u8 *txtPtr;
+    s32 strLength;
+
+    ConvertIntToDecimalStringN(gStringVar1, amount, STR_CONV_MODE_LEFT_ALIGN, 6);
+
+    strLength = 6 - StringLength(gStringVar1);
+    txtPtr = gStringVar4;
+
+    while (strLength-- != 0)
+        *(txtPtr++) = 0;
+
+    StringExpandPlaceholders(txtPtr, gText_PokedollarVar1);
+    AddTextPrinterParameterized(windowId, 0, gStringVar4, x, y, speed, NULL);
+}
+
+void PrintMoneyAmountInMoneyBoxWithBorder(u8 windowId, u16 tileStart, u8 pallete, int amount)
+{
+    SetWindowBorderStyle(windowId, FALSE, tileStart, pallete);
+    AddTextPrinterParameterized(windowId, 2, gUnknown_8419CE7, 0, 0, 0xFF, 0);
+    PrintMoneyAmountInMoneyBox(windowId, amount, 0);
+}
+
+void ChangeAmountInMoneyBox(int amount)
+{
+    PrintMoneyAmountInMoneyBox(sMoneyBoxWindowId, amount, 0);
+}
+
+void DrawMoneyBox(int amount, u8 x, u8 y)
+{
+    struct WindowTemplate template, template2;
+
+    SetWindowTemplateFields(&template, 0, x + 1, y + 1, 8, 3, 15, 8);
+    template2 = template;
+    sMoneyBoxWindowId = AddWindow(&template2);
+    FillWindowPixelBuffer(sMoneyBoxWindowId, 0);
+    PutWindowTilemap(sMoneyBoxWindowId);
+    sub_814FF2C(sMoneyBoxWindowId, 0x21D, 0xD0);
+    PrintMoneyAmountInMoneyBoxWithBorder(sMoneyBoxWindowId, 0x21D, 13, amount);
+}
+
+void HideMoneyBox(void)
+{
+    sub_810F4D8(sMoneyBoxWindowId, FALSE);
+    CopyWindowToVram(sMoneyBoxWindowId, 2);
+    RemoveWindow(sMoneyBoxWindowId);
+}