start to port mystery gift from emerald

8 files changed, 201 insertions, 262 deletions

diff --git a/asm/link_rfu_2.s b/asm/link_rfu_2.s
index d36eeca20..bad221798 100644
--- a/asm/link_rfu_2.s
+++ b/asm/link_rfu_2.s
@@ -5152,7 +5152,7 @@ sub_80FAD98: @ 80FAD98
 	bne _080FAE30
 	ldr r6, _080FAE18 @ =gMain
 	ldr r1, [r6, 0x4]
-	ldr r0, _080FAE1C @ =sub_814208C
+	ldr r0, _080FAE1C @ =c2_mystery_gift_e_reader_run
 	cmp r1, r0
 	bne _080FADC0
 	ldr r1, _080FAE20 @ =gWirelessCommType
@@ -5199,7 +5199,7 @@ _080FADF8:
 _080FAE10: .4byte gUnknown_3005450
 _080FAE14: .4byte gUnknown_3005E10
 _080FAE18: .4byte gMain
-_080FAE1C: .4byte sub_814208C
+_080FAE1C: .4byte c2_mystery_gift_e_reader_run
 _080FAE20: .4byte gWirelessCommType
 _080FAE24: .4byte c2_800ACD4
 _080FAE28: .4byte 0x0000069e
diff --git a/asm/mystery_gift_menu.s b/asm/mystery_gift_menu.s
index d6be6db09..baf5b55f5 100644
--- a/asm/mystery_gift_menu.s
+++ b/asm/mystery_gift_menu.s
@@ -5,253 +5,14 @@
 
 	.text
 
-	thumb_func_start sub_8142078
-sub_8142078: @ 8142078
-	push {lr}
-	bl ProcessSpriteCopyRequests
-	bl LoadOam
-	bl TransferPlttBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_8142078
-
-	thumb_func_start sub_814208C
-sub_814208C: @ 814208C
-	push {lr}
-	bl RunTasks
-	bl RunTextPrinters
-	bl AnimateSprites
-	bl BuildOamBuffer
-	pop {r0}
-	bx r0
-	thumb_func_end sub_814208C
-
-	thumb_func_start sub_81420A4
-sub_81420A4: @ 81420A4
-	push {r4-r7,lr}
-	sub sp, 0xC
-	adds r7, r0, 0
-	ldr r0, _081420C4 @ =gMain
-	movs r1, 0x87
-	lsls r1, 3
-	adds r6, r0, r1
-	ldrb r5, [r6]
-	cmp r5, 0x1
-	bne _081420BA
-	b _081421EC
-_081420BA:
-	cmp r5, 0x1
-	bgt _081420C8
-	cmp r5, 0
-	beq _081420D6
-	b _081422A0
-	.align 2, 0
-_081420C4: .4byte gMain
-_081420C8:
-	cmp r5, 0x2
-	bne _081420CE
-	b _08142254
-_081420CE:
-	cmp r5, 0x3
-	bne _081420D4
-	b _08142274
-_081420D4:
-	b _081422A0
-_081420D6:
-	movs r0, 0
-	bl SetVBlankCallback
-	bl ResetPaletteFade
-	bl ResetSpriteData
-	bl FreeAllSpritePalettes
-	bl ResetTasks
-	bl ScanlineEffect_Stop
-	movs r0, 0x1
-	bl ResetBgsAndClearDma3BusyFlags
-	ldr r1, _081421E0 @ =gUnknown_8466D60
-	movs r0, 0
-	movs r2, 0x4
-	bl InitBgsFromTemplates
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r0, 0x1
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x1
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r0, 0x3
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgX
-	movs r0, 0x3
-	movs r1, 0
-	movs r2, 0
-	bl ChangeBgY
-	movs r4, 0x80
-	lsls r4, 4
-	adds r0, r4, 0
-	bl Alloc
-	adds r1, r0, 0
-	movs r0, 0x3
-	bl SetBgTilemapBuffer
-	adds r0, r4, 0
-	bl Alloc
-	adds r1, r0, 0
-	movs r0, 0x2
-	bl SetBgTilemapBuffer
-	adds r0, r4, 0
-	bl Alloc
-	adds r1, r0, 0
-	movs r0, 0x1
-	bl SetBgTilemapBuffer
-	adds r0, r4, 0
-	bl Alloc
-	adds r1, r0, 0
-	movs r0, 0
-	bl SetBgTilemapBuffer
-	movs r0, 0
-	movs r1, 0xA
-	movs r2, 0xE0
-	bl sub_814FE40
-	movs r0, 0
-	movs r1, 0x1
-	movs r2, 0xF0
-	bl sub_814FDA0
-	ldr r1, _081421E4 @ =gUnknown_8466D30
-	movs r2, 0x80
-	lsls r2, 1
-	str r5, [sp]
-	movs r0, 0x3
-	movs r3, 0
-	bl sub_80F696C
-	ldr r0, _081421E8 @ =gUnknown_8466D70
-	bl InitWindows
-	bl DeactivateAllTextPrinters
-	movs r1, 0xC0
-	lsls r1, 7
-	movs r0, 0
-	bl ClearGpuRegBits
-	movs r0, 0x50
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x52
-	movs r1, 0
-	bl SetGpuReg
-	movs r0, 0x54
-	movs r1, 0
-	bl SetGpuReg
-	b _0814226C
-	.align 2, 0
-_081421E0: .4byte gUnknown_8466D60
-_081421E4: .4byte gUnknown_8466D30
-_081421E8: .4byte gUnknown_8466D70
-_081421EC:
-	ldr r0, _08142250 @ =gUnknown_8466D10
-	movs r1, 0
-	movs r2, 0x20
-	bl LoadPalette
-	movs r0, 0x2
-	bl stdpal_get
-	movs r1, 0xD0
-	movs r2, 0x20
-	bl LoadPalette
-	movs r4, 0x20
-	str r4, [sp]
-	str r4, [sp, 0x4]
-	movs r5, 0x11
-	str r5, [sp, 0x8]
-	movs r0, 0
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0
-	bl FillBgTilemapBufferRect
-	str r4, [sp]
-	str r4, [sp, 0x4]
-	str r5, [sp, 0x8]
-	movs r0, 0x1
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0
-	bl FillBgTilemapBufferRect
-	str r4, [sp]
-	str r4, [sp, 0x4]
-	str r5, [sp, 0x8]
-	movs r0, 0x2
-	movs r1, 0
-	movs r2, 0
-	movs r3, 0
-	bl FillBgTilemapBufferRect
-	bl sub_8142420
-	lsls r0, r7, 24
-	lsrs r0, 24
-	movs r1, 0
-	bl sub_8142344
-	b _0814226C
-	.align 2, 0
-_08142250: .4byte gUnknown_8466D10
-_08142254:
-	movs r0, 0x3
-	bl CopyBgTilemapBufferToVram
-	movs r0, 0x2
-	bl CopyBgTilemapBufferToVram
-	movs r0, 0x1
-	bl CopyBgTilemapBufferToVram
-	movs r0, 0
-	bl CopyBgTilemapBufferToVram
-_0814226C:
-	ldrb r0, [r6]
-	adds r0, 0x1
-	strb r0, [r6]
-	b _081422A0
-_08142274:
-	movs r0, 0
-	bl ShowBg
-	movs r0, 0x3
-	bl ShowBg
-	ldr r0, _08142298 @ =0x00000149
-	bl PlayBGM
-	ldr r0, _0814229C @ =sub_8142078
-	bl SetVBlankCallback
-	movs r0, 0xC5
-	bl EnableInterrupts
-	movs r0, 0x1
-	b _081422A2
-	.align 2, 0
-_08142298: .4byte 0x00000149
-_0814229C: .4byte sub_8142078
-_081422A0:
-	movs r0, 0
-_081422A2:
-	add sp, 0xC
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_81420A4
-
 	thumb_func_start sub_81422AC
 sub_81422AC: @ 81422AC
 	push {lr}
 	movs r0, 0
-	bl sub_81420A4
+	bl HandleMysteryGiftOrEReaderSetup
 	cmp r0, 0
 	beq _081422C8
-	ldr r0, _081422CC @ =sub_814208C
+	ldr r0, _081422CC @ =c2_mystery_gift_e_reader_run
 	bl SetMainCallback2
 	ldr r1, _081422D0 @ =gUnknown_203F3B8
 	movs r0, 0
@@ -261,7 +22,7 @@ _081422C8:
 	pop {r0}
 	bx r0
 	.align 2, 0
-_081422CC: .4byte sub_814208C
+_081422CC: .4byte c2_mystery_gift_e_reader_run
 _081422D0: .4byte gUnknown_203F3B8
 	thumb_func_end sub_81422AC
 
@@ -269,10 +30,10 @@ _081422D0: .4byte gUnknown_203F3B8
 sub_81422D4: @ 81422D4
 	push {lr}
 	movs r0, 0x1
-	bl sub_81420A4
+	bl HandleMysteryGiftOrEReaderSetup
 	cmp r0, 0
 	beq _081422F0
-	ldr r0, _081422F4 @ =sub_814208C
+	ldr r0, _081422F4 @ =c2_mystery_gift_e_reader_run
 	bl SetMainCallback2
 	ldr r1, _081422F8 @ =gUnknown_203F3B8
 	movs r0, 0x1
@@ -282,7 +43,7 @@ _081422F0:
 	pop {r0}
 	bx r0
 	.align 2, 0
-_081422F4: .4byte sub_814208C
+_081422F4: .4byte c2_mystery_gift_e_reader_run
 _081422F8: .4byte gUnknown_203F3B8
 	thumb_func_end sub_81422D4
 
diff --git a/data/mystery_gift_menu.s b/data/mystery_gift_menu.s
deleted file mode 100644
index 9caee4467..000000000
--- a/data/mystery_gift_menu.s
+++ /dev/null
@@ -1,14 +0,0 @@
-	.section .rodata
-	.align 2
-
-gUnknown_8466D10:: @ 8466D10
-	.incbin "baserom.gba", 0x466D10, 0x20
-
-gUnknown_8466D30:: @ 8466D30
-	.incbin "baserom.gba", 0x466D30, 0x30
-
-gUnknown_8466D60:: @ 8466D60
-	.incbin "baserom.gba", 0x466D60, 0x10
-
-gUnknown_8466D70:: @ 8466D70
-	.incbin "baserom.gba", 0x466D70, 0x20
diff --git a/graphics/interface/unk_textbox_border.png b/graphics/interface/unk_textbox_border.png
new file mode 100644
index 000000000..6cc6a64ac
--- /dev/null
+++ b/graphics/interface/unk_textbox_border.png
diff --git a/include/new_menu_helpers.h b/include/new_menu_helpers.h
index b17326667..fc9c1b9dc 100644
--- a/include/new_menu_helpers.h
+++ b/include/new_menu_helpers.h
@@ -30,5 +30,6 @@ void Menu_LoadStdPalAt(u16);
 void * malloc_and_decompress(const void * src, u32 * size);
 u16 sub_80F796C(void);
 void sub_80F6B08(u8 bgId, u8 left, u8 top, u8 width, u8 height, u8 palette);
+void sub_80F696C(u8 bgId, const void * gfx, u32 size, u16 a3, u8 a4);
 
 #endif // GUARD_NEW_MENU_HELPERS_H
diff --git a/include/text_window.h b/include/text_window.h
index 8a4113c62..2afc52a08 100644
--- a/include/text_window.h
+++ b/include/text_window.h
@@ -23,5 +23,7 @@ void sub_8098C6C(u8 bg, u16 destOffset, u8 palOffset);
 void sub_814FEAC(u8 windowId, u16 tileStart, u8 palette);
 void sub_814FF2C(u8 windowId, u16 tileStart, u8 palette);
 void sub_815001C(u8 windowId, u16 tileStart, u8 palette);
+void sub_814FE40(u8 windowId, u16 tileStart, u8 palette);
+void sub_814FDA0(u8 windowId, u16 tileStart, u8 palette);
 
 #endif // GUARD_TEXT_WINDOW_H
diff --git a/ld_script.txt b/ld_script.txt
index 283c711f7..6c50d0e5a 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -241,6 +241,7 @@ SECTIONS {
         asm/buy_menu_helpers.o(.text);
         asm/slot_machine.o(.text);
         src/roamer.o(.text);
+        src/mystery_gift_menu.o(.text);
         asm/mystery_gift_menu.o(.text);
         asm/link_rfu_4.o(.text);
         src/mevent.o(.text);
@@ -409,7 +410,7 @@ SECTIONS {
         data/buy_menu_helpers.o(.rodata);
         data/slot_machine.o(.rodata);
         src/roamer.o(.rodata);
-        data/mystery_gift_menu.o(.rodata);
+        src/mystery_gift_menu.o(.rodata);
         data/link_rfu_4.o(.rodata);
         src/mevent.o(.rodata);
         src/mevent_server_helpers.o(.rodata);
diff --git a/src/mystery_gift_menu.c b/src/mystery_gift_menu.c
new file mode 100644
index 000000000..7b7fd71a1
--- /dev/null
+++ b/src/mystery_gift_menu.c
@@ -0,0 +1,188 @@
+#include "global.h"
+#include "palette.h"
+#include "dma3.h"
+#include "gpu_regs.h"
+#include "bg.h"
+#include "task.h"
+#include "scanline_effect.h"
+#include "malloc.h"
+#include "text.h"
+#include "window.h"
+#include "text_window.h"
+#include "new_menu_helpers.h"
+#include "sound.h"
+#include "mystery_gift_menu.h"
+#include "link_rfu.h"
+#include "constants/songs.h"
+
+EWRAM_DATA u8 sDownArrowCounterAndYCoordIdx[8] = {};
+EWRAM_DATA bool8 gGiftIsFromEReader = FALSE;
+
+static const u16 gUnkTextboxBorderPal[] = INCBIN_U16("graphics/interface/unk_textbox_border.gbapal");
+static const u32 gUnkTextboxBorderGfx[] = INCBIN_U32("graphics/interface/unk_textbox_border.4bpp.lz");
+
+struct MysteryGiftTaskData
+{
+    u16 curPromptWindowId;
+    u16 unk2;
+    u16 unk4;
+    u16 unk6;
+    u8 state;
+    u8 textState;
+    u8 unkA;
+    u8 unkB;
+    u8 IsCardOrNews;
+    u8 source;
+    u8 prevPromptWindowId;
+    u8 * buffer;
+};
+
+static const struct BgTemplate sBGTemplates[] = {
+    {
+        .bg = 0,
+        .charBaseIndex = 2,
+        .mapBaseIndex = 15,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 0,
+        .baseTile = 0x000
+    }, {
+        .bg = 1,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 14,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 1,
+        .baseTile = 0x000
+    }, {
+        .bg = 2,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 13,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 2,
+        .baseTile = 0x000
+    }, {
+        .bg = 3,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 12,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 3,
+        .baseTile = 0x000
+    }
+};
+
+static const struct WindowTemplate sMainWindows[] = {
+    {
+        .priority = 0x00,
+        .tilemapLeft = 0x00,
+        .tilemapTop = 0x00,
+        .width = 0x1e,
+        .height = 0x02,
+        .paletteNum = 0x0f,
+        .baseBlock = 0x0013
+    }, {
+        .priority = 0x00,
+        .tilemapLeft = 0x01,
+        .tilemapTop = 0x0f,
+        .width = 0x1c,
+        .height = 0x04,
+        .paletteNum = 0x0f,
+        .baseBlock = 0x004f
+    }, {
+        .priority = 0x00,
+        .tilemapLeft = 0x00,
+        .tilemapTop = 0x0f,
+        .width = 0x1e,
+        .height = 0x05,
+        .paletteNum = 0x0d,
+        .baseBlock = 0x004f
+    }, {
+        0xFF
+    }
+};
+
+void vblankcb_mystery_gift_e_reader_run(void)
+{
+    ProcessSpriteCopyRequests();
+    LoadOam();
+    TransferPlttBuffer();
+}
+
+void c2_mystery_gift_e_reader_run(void)
+{
+    RunTasks();
+    RunTextPrinters();
+    AnimateSprites();
+    BuildOamBuffer();
+}
+
+bool32 HandleMysteryGiftOrEReaderSetup(s32 mg_or_ereader)
+{
+    switch (gMain.state)
+    {
+    case 0:
+        SetVBlankCallback(NULL);
+        ResetPaletteFade();
+        ResetSpriteData();
+        FreeAllSpritePalettes();
+        ResetTasks();
+        ScanlineEffect_Stop();
+        ResetBgsAndClearDma3BusyFlags(1);
+
+        InitBgsFromTemplates(0, sBGTemplates, ARRAY_COUNT(sBGTemplates));
+        ChangeBgX(0, 0, 0);
+        ChangeBgY(0, 0, 0);
+        ChangeBgX(1, 0, 0);
+        ChangeBgY(1, 0, 0);
+        ChangeBgX(2, 0, 0);
+        ChangeBgY(2, 0, 0);
+        ChangeBgX(3, 0, 0);
+        ChangeBgY(3, 0, 0);
+
+        SetBgTilemapBuffer(3, Alloc(0x800));
+        SetBgTilemapBuffer(2, Alloc(0x800));
+        SetBgTilemapBuffer(1, Alloc(0x800));
+        SetBgTilemapBuffer(0, Alloc(0x800));
+
+        sub_814FE40(0, 10, 0xE0);
+        sub_814FDA0(0,  1, 0xF0);
+        sub_80F696C(3, gUnkTextboxBorderGfx, 0x100, 0, 0);
+        InitWindows(sMainWindows);
+        DeactivateAllTextPrinters();
+        ClearGpuRegBits(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON | DISPCNT_WIN1_ON);
+        SetGpuReg(REG_OFFSET_BLDCNT, 0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 0);
+        gMain.state++;
+        break;
+    case 1:
+        LoadPalette(gUnkTextboxBorderPal, 0, 0x20);
+        LoadPalette(stdpal_get(2), 0xd0, 0x20);
+        FillBgTilemapBufferRect(0, 0x000, 0, 0, 32, 32, 0x11);
+        FillBgTilemapBufferRect(1, 0x000, 0, 0, 32, 32, 0x11);
+        FillBgTilemapBufferRect(2, 0x000, 0, 0, 32, 32, 0x11);
+        sub_8142420();
+        sub_8142344(mg_or_ereader, 0);
+        gMain.state++;
+        break;
+    case 2:
+        CopyBgTilemapBufferToVram(3);
+        CopyBgTilemapBufferToVram(2);
+        CopyBgTilemapBufferToVram(1);
+        CopyBgTilemapBufferToVram(0);
+        gMain.state++;
+        break;
+    case 3:
+        ShowBg(0);
+        ShowBg(3);
+        PlayBGM(BGM_FRLG_MYSTERY_GIFT);
+        SetVBlankCallback(vblankcb_mystery_gift_e_reader_run);
+        EnableInterrupts(INTR_FLAG_VBLANK | INTR_FLAG_VCOUNT | INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL);
+        return TRUE;
+    }
+
+    return FALSE;
+}
+