1 files changed, 281 insertions, 0 deletions
diff --git a/src/new_menu_helpers.c b/src/new_menu_helpers.c
new file mode 100644
index 000000000..7abe277e1
--- /dev/null
+++ b/src/new_menu_helpers.c
@@ -0,0 +1,281 @@
+#include "global.h"
+#include "malloc.h"
+#include "dma3.h"
+#include "task.h"
+#include "bg.h"
+#include "gpu_regs.h"
+#include "window.h"
+#include "menu.h"
+#include "menu_helpers.h"
+#include "new_menu_helpers.h"
+#include "quest_log.h"
+#include "text.h"
+
+static EWRAM_DATA bool8 gUnknown_203AB58[4] = {FALSE}; // knizz: bgmaps_that_need_syncing
+
+EWRAM_DATA u16 gUnknown_203AB5C;
+EWRAM_DATA void *gUnknown_203AB60[0x20];
+extern const struct WindowTemplate sStandardTextBox_WindowTemplates[];
+EWRAM_DATA u8 sStartMenuWindowId;
+
+u16 CopyDecompressedTileDataToVram(u8 bgId, const void *src, u16 size, u16 offset, u8 mode);
+void TaskFreeBufAfterCopyingTileDataToVram(u8 taskId);
+
+void ClearScheduledBgCopiesToVram(void)
+{
+    memset(gUnknown_203AB58, 0, sizeof(gUnknown_203AB58));
+}
+
+void ScheduleBgCopyTilemapToVram(u8 bgId)
+{
+    gUnknown_203AB58[bgId] = TRUE;
+}
+
+void DoScheduledBgTilemapCopiesToVram(void)
+{
+    if (gUnknown_203AB58[0] == TRUE)
+    {
+        CopyBgTilemapBufferToVram(0);
+        gUnknown_203AB58[0] = FALSE;
+    }
+    if (gUnknown_203AB58[1] == TRUE)
+    {
+        CopyBgTilemapBufferToVram(1);
+        gUnknown_203AB58[1] = FALSE;
+    }
+    if (gUnknown_203AB58[2] == TRUE)
+    {
+        CopyBgTilemapBufferToVram(2);
+        gUnknown_203AB58[2] = FALSE;
+    }
+    if (gUnknown_203AB58[3] == TRUE)
+    {
+        CopyBgTilemapBufferToVram(3);
+        gUnknown_203AB58[3] = FALSE;
+    }
+}
+
+void ResetTempTileDataBuffers(void)
+{
+    int i;
+    for (i = 0; i < (s32)ARRAY_COUNT(gUnknown_203AB60); i++)
+    {
+        gUnknown_203AB60[i] = NULL;
+    }
+    gUnknown_203AB5C = 0;
+}
+
+bool8 FreeTempTileDataBuffersIfPossible(void)
+{
+    int i;
+
+    if (!IsDma3ManagerBusyWithBgCopy())
+    {
+        if (gUnknown_203AB5C)
+        {
+            for (i = 0; i < gUnknown_203AB5C; i++)
+            {
+                FREE_AND_SET_NULL(gUnknown_203AB60[i]);
+            }
+            gUnknown_203AB5C = 0;
+        }
+        return FALSE;
+    }
+    else
+    {
+        return TRUE;
+    }
+}
+
+void *DecompressAndCopyTileDataToVram(u8 bgId, const void *src, u32 size, u16 offset, u8 mode)
+{
+    u32 sizeOut;
+    if (gUnknown_203AB5C < ARRAY_COUNT(gUnknown_203AB60))
+    {
+        void *ptr = MallocAndDecompress(src, &sizeOut);
+        if (!size)
+            size = sizeOut;
+        if (ptr)
+        {
+            CopyDecompressedTileDataToVram(bgId, ptr, size, offset, mode);
+            gUnknown_203AB60[gUnknown_203AB5C++] = ptr;
+        }
+        return ptr;
+    }
+    return NULL;
+}
+
+void *DecompressAndCopyTileDataToVram2(u8 bgId, const void *src, u32 size, u16 offset, u8 mode)
+{
+    u32 sizeOut;
+    if (gUnknown_203AB5C < ARRAY_COUNT(gUnknown_203AB60))
+    {
+        void *ptr = MallocAndDecompress(src, &sizeOut);
+        if (sizeOut > size)
+            sizeOut = size;
+        if (ptr)
+        {
+            CopyDecompressedTileDataToVram(bgId, ptr, sizeOut, offset, mode);
+            gUnknown_203AB60[gUnknown_203AB5C++] = ptr;
+        }
+        return ptr;
+    }
+    return NULL;
+}
+
+void DecompressAndLoadBgGfxUsingHeap(u8 bgId, const void *src, u32 size, u16 offset, u8 mode)
+{
+    u32 sizeOut;
+    void *ptr = MallocAndDecompress(src, &sizeOut);
+    if (!size)
+        size = sizeOut;
+    if (ptr)
+    {
+        u8 taskId = CreateTask(TaskFreeBufAfterCopyingTileDataToVram, 0);
+        gTasks[taskId].data[0] = CopyDecompressedTileDataToVram(bgId, ptr, size, offset, mode);
+        SetWordTaskArg(taskId, 1, (u32)ptr);
+    }
+}
+
+void DecompressAndLoadBgGfxUsingHeap2(u8 bgId, const void *src, u32 size, u16 offset, u8 mode)
+{
+    u32 sizeOut;
+    void *ptr = MallocAndDecompress(src, &sizeOut);
+        if (sizeOut > size)
+            sizeOut = size;
+    if (ptr)
+    {
+        u8 taskId = CreateTask(TaskFreeBufAfterCopyingTileDataToVram, 0);
+        gTasks[taskId].data[0] = CopyDecompressedTileDataToVram(bgId, ptr, sizeOut, offset, mode);
+        SetWordTaskArg(taskId, 1, (u32)ptr);
+    }
+}
+
+void TaskFreeBufAfterCopyingTileDataToVram(u8 taskId)
+{
+    if (!CheckForSpaceForDma3Request(gTasks[taskId].data[0]))
+    {
+        Free((void *)GetWordTaskArg(taskId, 1));
+        DestroyTask(taskId);
+    }
+}
+
+void *MallocAndDecompress(const void *src, u32 *size)
+{
+    void *ptr;
+    u8 *sizeAsBytes = (u8 *)size;
+    u8 *srcAsBytes = (u8 *)src;
+
+    sizeAsBytes[0] = srcAsBytes[1];
+    sizeAsBytes[1] = srcAsBytes[2];
+    sizeAsBytes[2] = srcAsBytes[3];
+    sizeAsBytes[3] = 0;
+
+    ptr = Alloc(*size);
+    if (ptr)
+        LZ77UnCompWram(src, ptr);
+    return ptr;
+}
+
+u16 CopyDecompressedTileDataToVram(u8 bgId, const void *src, u16 size, u16 offset, u8 mode)
+{
+    switch (mode)
+    { // different to EM
+        case 1:
+            break;
+        case 0:        
+        default:
+        return LoadBgTiles(bgId, src, size, offset);
+    }
+    return LoadBgTilemap(bgId, src, size, offset);
+}
+
+void SetBgRectPal(u8 bgId, u8 left, u8 top, u8 width, u8 height, u8 palette)
+{
+    u8 i;
+    u8 j;
+    u16 *ptr = GetBgTilemapBuffer(bgId);
+
+    for (i = top; i < top + height; i++)
+    {
+        for (j = left; j < left + width; j++)
+        {
+            ptr[(i * 32) + j] = (ptr[(i * 32) + j] & 0xFFF) | (palette << 12);
+        }
+    }
+}
+
+void CopyRectIntoAltRect(u8 bgId, u16 *dest, u8 left, u8 top, u8 width, u8 height)
+{
+    u8 i;
+    u8 j;
+    const u16 *src = GetBgTilemapBuffer(bgId);
+
+    for (i = 0; i < height; i++)
+    {
+        for (j = 0; j < width; j++)
+        {
+            dest[(i * width) + j] = src[(i + top) * 32 + j + left];
+        }
+    }
+}
+
+void ResetBgPositions(void)
+{
+    ChangeBgX(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgX(2, 0, 0);
+    ChangeBgX(3, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgY(1, 0, 0);
+    ChangeBgY(2, 0, 0);
+    ChangeBgY(3, 0, 0);
+}
+
+void InitStandardTextBoxWindows(void)
+{
+    InitWindows(sStandardTextBox_WindowTemplates);
+    sStartMenuWindowId = 0xFF;
+    MapNamePopupWindowIdSetDummy();
+}
+
+void FreeAllOverworldWindowBuffers(void)
+{
+    FreeAllWindowBuffers();
+}
+
+void ResetBg0(void)
+{
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    DeactivateAllTextPrinters();
+    sub_80F6E9C();
+}
+
+u16 RunTextPrinters_CheckPrinter0Active(void)
+{
+    RunTextPrinters();
+    return IsTextPrinterActive(0);
+}
+
+u16 AddTextPrinterParameterized2(u8 windowId, u8 fontId, const u8 *str, u8 speed, void (*callback)(struct TextPrinterTemplate *, u16), u8 fgColor, u8 bgColor, u8 shadowColor)
+{
+    struct TextPrinterTemplate printer;
+
+    printer.currentChar = str;
+    printer.windowId = windowId;
+    printer.fontId = fontId;
+    printer.x = 0;
+    printer.y = 1;
+    printer.currentX = 0;
+    printer.currentY = 1;
+    printer.letterSpacing = 1; // different to EM
+    printer.lineSpacing = 1; // different to EM
+    printer.unk = 0;
+    printer.fgColor = fgColor;
+    printer.bgColor = bgColor;
+    printer.shadowColor = shadowColor;
+    gTextFlags.useAlternateDownArrow = 0;
+    return AddTextPrinter(&printer, speed, callback);
+}
+