intro: sub_80EDC40

3 files changed, 282 insertions, 636 deletions

diff --git a/asm/intro.s b/asm/intro.s
index 8e908cebe..87afc0815 100644
--- a/asm/intro.s
+++ b/asm/intro.s
@@ -5,581 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_80ED898
-sub_80ED898: @ 80ED898
-	push {r4,r5,lr}
-	sub sp, 0x8
-	adds r4, r0, 0
-	ldrb r0, [r4, 0x4]
-	cmp r0, 0xF
-	bls _080ED8A6
-	b _080EDA98
-_080ED8A6:
-	lsls r0, 2
-	ldr r1, _080ED8B0 @ =_080ED8B4
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.align 2, 0
-_080ED8B0: .4byte _080ED8B4
-	.align 2, 0
-_080ED8B4:
-	.4byte _080ED8F4
-	.4byte _080ED8F8
-	.4byte _080ED910
-	.4byte _080ED918
-	.4byte _080ED936
-	.4byte _080ED946
-	.4byte _080ED95E
-	.4byte _080ED97C
-	.4byte _080ED998
-	.4byte _080ED9A0
-	.4byte _080ED9BA
-	.4byte _080ED9D2
-	.4byte _080ED9DC
-	.4byte _080EDA1C
-	.4byte _080EDA5C
-	.4byte _080EDA7C
-_080ED8F4:
-	movs r0, 0
-	b _080EDA6C
-_080ED8F8:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x1E
-	bhi _080ED908
-	b _080EDAC4
-_080ED908:
-	adds r0, r4, 0
-	bl sub_80EE5E4
-	b _080EDA6E
-_080ED910:
-	adds r0, r4, 0
-	bl sub_80EE850
-	b _080EDA64
-_080ED918:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x1E
-	bhi _080ED928
-	b _080EDAC4
-_080ED928:
-	bl sub_80ED760
-	adds r0, r4, 0
-	bl sub_80EDF94
-	movs r0, 0
-	b _080EDA6C
-_080ED936:
-	ldrb r0, [r4, 0x6]
-	cmp r0, 0
-	bne _080ED93E
-	b _080EDAC4
-_080ED93E:
-	adds r0, r4, 0
-	bl sub_80EE6A4
-	b _080EDA6E
-_080ED946:
-	adds r0, r4, 0
-	bl sub_80EE850
-	lsls r0, 24
-	lsrs r5, r0, 24
-	cmp r5, 0
-	beq _080ED956
-	b _080EDAC4
-_080ED956:
-	bl sub_80ED788
-	strh r5, [r4, 0x12]
-	b _080EDA6E
-_080ED95E:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x10
-	bhi _080ED96E
-	b _080EDAC4
-_080ED96E:
-	ldr r0, [r4, 0x18]
-	movs r1, 0x8
-	movs r2, 0xC
-	movs r3, 0x5
-	bl sub_80EE970
-	b _080EDA6E
-_080ED97C:
-	adds r0, r4, 0
-	bl sub_80EE850
-	lsls r0, 24
-	cmp r0, 0
-	beq _080ED98A
-	b _080EDAC4
-_080ED98A:
-	ldr r0, [r4, 0x18]
-	movs r1, 0x8
-	movs r2, 0xC
-	movs r3, 0x5
-	bl sub_80EE970
-	b _080EDA6E
-_080ED998:
-	adds r0, r4, 0
-	bl sub_80EE850
-	b _080EDA64
-_080ED9A0:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x14
-	bhi _080ED9B0
-	b _080EDAC4
-_080ED9B0:
-	adds r0, r4, 0
-	bl sub_80EEA94
-	movs r0, 0
-	b _080EDA6C
-_080ED9BA:
-	bl sub_80ED7B0
-	lsls r0, 24
-	cmp r0, 0
-	beq _080ED9C6
-	b _080EDAC4
-_080ED9C6:
-	bl sub_80ED760
-	adds r0, r4, 0
-	bl sub_80EDAF0
-	b _080EDA6E
-_080ED9D2:
-	movs r0, 0
-	bl HideBg
-	movs r0, 0
-	b _080EDA6C
-_080ED9DC:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x30
-	bne _080ED9FA
-	ldr r0, _080EDA18 @ =0x00007fff
-	str r0, [sp]
-	movs r0, 0x6
-	movs r1, 0x2
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-_080ED9FA:
-	ldrh r0, [r4, 0x12]
-	cmp r0, 0x78
-	bls _080EDAC4
-	adds r0, r4, 0
-	bl sub_80EDB70
-	adds r0, r4, 0
-	bl sub_80EDBAC
-	ldrb r0, [r4, 0x4]
-	adds r0, 0x1
-	strb r0, [r4, 0x4]
-	movs r0, 0
-	b _080EDAC2
-	.align 2, 0
-_080EDA18: .4byte 0x00007fff
-_080EDA1C:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x8
-	bls _080EDAC4
-	add r1, sp, 0x4
-	ldr r2, _080EDA50 @ =0x00007fff
-	adds r0, r2, 0
-	strh r0, [r1]
-	ldr r1, _080EDA54 @ =gPlttBufferUnfaded + 0x20
-	ldr r2, _080EDA58 @ =0x01000020
-	add r0, sp, 0x4
-	bl CpuSet
-	movs r1, 0x2
-	negs r1, r1
-	movs r0, 0
-	str r0, [sp]
-	adds r0, r1, 0
-	movs r2, 0
-	movs r3, 0x10
-	bl BeginNormalPaletteFade
-	b _080EDA6E
-	.align 2, 0
-_080EDA50: .4byte 0x00007fff
-_080EDA54: .4byte gPlttBufferUnfaded + 0x20
-_080EDA58: .4byte 0x01000020
-_080EDA5C:
-	ldr r0, _080EDA78 @ =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-_080EDA64:
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0
-	bne _080EDAC4
-_080EDA6C:
-	strh r0, [r4, 0x12]
-_080EDA6E:
-	ldrb r0, [r4, 0x4]
-	adds r0, 0x1
-	strb r0, [r4, 0x4]
-	b _080EDAC4
-	.align 2, 0
-_080EDA78: .4byte gPaletteFade
-_080EDA7C:
-	ldrh r0, [r4, 0x12]
-	adds r0, 0x1
-	strh r0, [r4, 0x12]
-	lsls r0, 16
-	lsrs r0, 16
-	cmp r0, 0x3C
-	bls _080EDAC4
-	ldr r1, _080EDA94 @ =sub_80EDBE8
-	adds r0, r4, 0
-	bl sub_80ECAA8
-	b _080EDAC4
-	.align 2, 0
-_080EDA94: .4byte sub_80EDBE8
-_080EDA98:
-	ldr r0, _080EDACC @ =gMain
-	ldrh r1, [r0, 0x2E]
-	movs r0, 0x80
-	lsls r0, 1
-	ands r0, r1
-	cmp r0, 0
-	beq _080EDAC4
-	ldr r0, _080EDAD0 @ =0xffff0064
-	ldr r2, _080EDAD4 @ =0x00007fff
-	movs r1, 0
-	bl BlendPalettes
-	ldr r1, [r4, 0x18]
-	movs r0, 0
-	strh r0, [r1, 0x24]
-	ldr r1, [r4, 0x18]
-	movs r0, 0xB4
-	strh r0, [r1, 0x20]
-	movs r0, 0x1
-	strb r0, [r4, 0x4]
-	movs r0, 0x1E
-_080EDAC2:
-	strh r0, [r4, 0x12]
-_080EDAC4:
-	add sp, 0x8
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDACC: .4byte gMain
-_080EDAD0: .4byte 0xffff0064
-_080EDAD4: .4byte 0x00007fff
-	thumb_func_end sub_80ED898
-
-	thumb_func_start sub_80EDAD8
-sub_80EDAD8: @ 80EDAD8
-	push {lr}
-	ldrb r3, [r0, 0x1]
-	lsrs r1, r3, 6
-	ldrb r2, [r0, 0x3]
-	lsrs r2, 6
-	lsls r3, 30
-	lsrs r3, 30
-	bl CalcCenterToCornerVec
-	pop {r0}
-	bx r0
-	thumb_func_end sub_80EDAD8
-
-	thumb_func_start sub_80EDAF0
-sub_80EDAF0: @ 80EDAF0
-	push {r4-r7,lr}
-	adds r7, r0, 0
-	movs r5, 0
-_080EDAF6:
-	movs r6, 0x1
-	ands r6, r5
-	lsls r1, r6, 1
-	adds r1, r6
-	lsls r1, 20
-	lsrs r2, r5, 31
-	adds r2, r5, r2
-	asrs r2, 1
-	lsls r2, 22
-	movs r0, 0xC4
-	lsls r0, 14
-	adds r1, r0
-	asrs r1, 16
-	movs r0, 0x90
-	lsls r0, 15
-	adds r2, r0
-	asrs r2, 16
-	ldr r0, _080EDB68 @ =gUnknown_840BE4C
-	movs r3, 0x8
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r1, r0, 24
-	cmp r1, 0x40
-	beq _080EDB5C
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	ldr r1, _080EDB6C @ =gSprites
-	adds r4, r0, r1
-	lsls r1, r5, 24
-	lsrs r1, 24
-	adds r0, r4, 0
-	bl StartSpriteAnim
-	lsls r1, r5, 2
-	adds r0, r7, 0
-	adds r0, 0x28
-	adds r2, r0, r1
-	str r4, [r2]
-	cmp r6, 0
-	beq _080EDB56
-	ldrb r0, [r4, 0x1]
-	movs r1, 0x3F
-	ands r1, r0
-	movs r0, 0x80
-	orrs r1, r0
-	strb r1, [r4, 0x1]
-_080EDB56:
-	ldr r0, [r2]
-	bl sub_80EDAD8
-_080EDB5C:
-	adds r5, 0x1
-	cmp r5, 0x3
-	ble _080EDAF6
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDB68: .4byte gUnknown_840BE4C
-_080EDB6C: .4byte gSprites
-	thumb_func_end sub_80EDAF0
-
-	thumb_func_start sub_80EDB70
-sub_80EDB70: @ 80EDB70
-	push {r4,lr}
-	adds r4, r0, 0
-	ldr r1, [r4, 0x18]
-	ldrh r0, [r1, 0x24]
-	ldrh r2, [r1, 0x20]
-	adds r0, r2
-	strh r0, [r1, 0x20]
-	ldr r1, [r4, 0x18]
-	ldrh r0, [r1, 0x26]
-	ldrh r2, [r1, 0x22]
-	adds r0, r2
-	strh r0, [r1, 0x22]
-	ldr r0, [r4, 0x18]
-	movs r1, 0
-	movs r2, 0x2A
-	bl sub_8007FFC
-	ldr r0, [r4, 0x18]
-	ldr r1, _080EDBA4 @ =SpriteCallbackDummy
-	str r1, [r0, 0x1C]
-	movs r1, 0x1
-	bl StartSpriteAffineAnim
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDBA4: .4byte SpriteCallbackDummy
-	thumb_func_end sub_80EDB70
-
-	thumb_func_start nullsub_83
-nullsub_83: @ 80EDBA8
-	bx lr
-	thumb_func_end nullsub_83
-
-	thumb_func_start sub_80EDBAC
-sub_80EDBAC: @ 80EDBAC
-	push {r4-r7,lr}
-	adds r7, r0, 0
-	movs r6, 0
-	ldr r5, _080EDBE0 @ =gUnknown_840BBB8
-_080EDBB4:
-	lsls r0, r6, 2
-	adds r4, r7, 0
-	adds r4, 0x28
-	adds r4, r0
-	ldr r0, [r4]
-	movs r1, 0x1
-	bl StartSpriteAffineAnim
-	ldr r0, [r4]
-	ldr r1, _080EDBE4 @ =nullsub_83
-	str r1, [r0, 0x1C]
-	ldrb r1, [r5]
-	ldrb r2, [r5, 0x1]
-	bl sub_8007FFC
-	adds r5, 0x2
-	adds r6, 0x1
-	cmp r6, 0x3
-	ble _080EDBB4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDBE0: .4byte gUnknown_840BBB8
-_080EDBE4: .4byte nullsub_83
-	thumb_func_end sub_80EDBAC
-
-	thumb_func_start sub_80EDBE8
-sub_80EDBE8: @ 80EDBE8
-	push {r4,lr}
-	adds r4, r0, 0
-	ldrb r0, [r4, 0x4]
-	cmp r0, 0
-	beq _080EDBF8
-	cmp r0, 0x1
-	beq _080EDC0C
-	b _080EDC34
-_080EDBF8:
-	movs r2, 0x80
-	lsls r2, 3
-	movs r0, 0
-	movs r1, 0
-	bl FillPalette
-	ldrb r0, [r4, 0x4]
-	adds r0, 0x1
-	strb r0, [r4, 0x4]
-	b _080EDC34
-_080EDC0C:
-	bl FreeTempTileDataBuffersIfPossible
-	lsls r0, 24
-	cmp r0, 0
-	bne _080EDC34
-	ldrb r0, [r4, 0x5]
-	bl DestroyTask
-	adds r0, r4, 0
-	bl Free
-	movs r0, 0x2
-	bl DisableInterrupts
-	movs r0, 0
-	bl SetHBlankCallback
-	ldr r0, _080EDC3C @ =CB2_InitTitleScreen
-	bl SetMainCallback2
-_080EDC34:
-	pop {r4}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDC3C: .4byte CB2_InitTitleScreen
-	thumb_func_end sub_80EDBE8
-
-	thumb_func_start sub_80EDC40
-sub_80EDC40: @ 80EDC40
-	push {r4-r6,lr}
-	movs r5, 0
-	ldr r4, _080EDCE4 @ =gUnknown_840BBC0
-_080EDC46:
-	adds r0, r4, 0
-	bl LoadCompressedSpriteSheet
-	adds r4, 0x8
-	adds r5, 0x1
-	cmp r5, 0x4
-	bls _080EDC46
-	ldr r0, _080EDCE8 @ =gUnknown_840BBE8
-	bl LoadSpritePalettes
-	ldr r6, _080EDCEC @ =gUnknown_203AB0E
-	movs r0, 0x60
-	strh r0, [r6]
-	ldr r5, _080EDCF0 @ =gUnknown_203AB10
-	movs r0, 0x10
-	strh r0, [r5]
-	ldr r1, _080EDCF4 @ =gUnknown_203AB12
-	movs r0, 0x7
-	strh r0, [r1]
-	ldr r0, _080EDCF8 @ =gUnknown_203AB14
-	movs r2, 0x5
-	strh r2, [r0]
-	ldr r1, _080EDCFC @ =gUnknown_203AB16
-	movs r0, 0x8
-	strh r0, [r1]
-	ldr r1, _080EDD00 @ =gUnknown_203AB18
-	movs r0, 0x5A
-	strh r0, [r1]
-	ldr r1, _080EDD04 @ =gUnknown_203AB1A
-	movs r0, 0x78
-	strh r0, [r1]
-	ldr r0, _080EDD08 @ =gUnknown_203AB1E
-	movs r1, 0x1
-	strh r1, [r0]
-	ldr r0, _080EDD0C @ =gUnknown_203AB20
-	strh r1, [r0]
-	ldr r0, _080EDD10 @ =gUnknown_203AB22
-	strh r2, [r0]
-	ldr r0, _080EDD14 @ =gUnknown_203AB24
-	strh r2, [r0]
-	ldr r4, _080EDD18 @ =gUnknown_203AB28
-	ldr r0, [r4]
-	cmp r0, 0
-	bne _080EDCA2
-	ldr r0, _080EDD1C @ =0x151b9245
-	str r0, [r4]
-_080EDCA2:
-	ldr r0, _080EDD20 @ =gUnknown_840BC6C
-	movs r1, 0xF8
-	movs r2, 0x37
-	movs r3, 0
-	bl CreateSprite
-	lsls r0, 24
-	lsrs r1, r0, 24
-	cmp r1, 0x40
-	beq _080EDCDE
-	ldr r0, _080EDD24 @ =gSprites
-	lsls r3, r1, 4
-	adds r3, r1
-	lsls r3, 2
-	adds r2, r3, r0
-	movs r1, 0xF8
-	lsls r1, 4
-	strh r1, [r2, 0x2E]
-	movs r1, 0xDC
-	lsls r1, 2
-	strh r1, [r2, 0x30]
-	ldrh r1, [r6]
-	strh r1, [r2, 0x32]
-	ldrh r1, [r5]
-	strh r1, [r2, 0x34]
-	adds r0, r3
-	adds r0, 0x3A
-	ldr r1, [r4]
-	bl StoreWordInTwoHalfwords
-_080EDCDE:
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_080EDCE4: .4byte gUnknown_840BBC0
-_080EDCE8: .4byte gUnknown_840BBE8
-_080EDCEC: .4byte gUnknown_203AB0E
-_080EDCF0: .4byte gUnknown_203AB10
-_080EDCF4: .4byte gUnknown_203AB12
-_080EDCF8: .4byte gUnknown_203AB14
-_080EDCFC: .4byte gUnknown_203AB16
-_080EDD00: .4byte gUnknown_203AB18
-_080EDD04: .4byte gUnknown_203AB1A
-_080EDD08: .4byte gUnknown_203AB1E
-_080EDD0C: .4byte gUnknown_203AB20
-_080EDD10: .4byte gUnknown_203AB22
-_080EDD14: .4byte gUnknown_203AB24
-_080EDD18: .4byte gUnknown_203AB28
-_080EDD1C: .4byte 0x151b9245
-_080EDD20: .4byte gUnknown_840BC6C
-_080EDD24: .4byte gSprites
-	thumb_func_end sub_80EDC40
-
 	thumb_func_start sub_80EDD28
 sub_80EDD28: @ 80EDD28
 	push {r4-r7,lr}
diff --git a/src/intro.c b/src/intro.c
index 944f661dc..19e59401f 100644
--- a/src/intro.c
+++ b/src/intro.c
@@ -14,6 +14,9 @@
 #include "save.h"
 #include "sound.h"
 #include "new_game.h"
+#include "title_screen.h"
+#include "decompress.h"
+#include "util.h"
 #include "constants/songs.h"
 
 struct IntroSequenceData
@@ -21,17 +24,18 @@ struct IntroSequenceData
     void (*field_0000)(struct IntroSequenceData *);
     u8 field_0004;
     u8 field_0005;
-    u8 filler_0006[2];
+    u8 field_0006;
     u16 field_0008;
     u16 field_000A;
-    u8 field_000C[6];
+    u8 filler_000C[6];
     u16 field_0012;
     struct Sprite * field_0014;
     struct Sprite * field_0018;
     struct Sprite * field_001C;
     struct Sprite * field_0020;
     struct Sprite * field_0024;
-    u8 filler_0028[0x14];
+    struct Sprite * field_0028[4];
+    u8 filler_0038[0x4];
     u8 field_003C[0x400];
     u8 field_043C[0x400];
     u8 filler_083C[0x2080];
@@ -40,6 +44,27 @@ struct IntroSequenceData
 EWRAM_DATA struct GcmbStruct gUnknown_203AAD4 = {0};
 EWRAM_DATA u16 gUnknown_203AB00 = 0;
 EWRAM_DATA u16 gUnknown_203AB02 = 0;
+EWRAM_DATA u16 gUnknown_203AB04 = 0;
+EWRAM_DATA u16 gUnknown_203AB06 = 0;
+EWRAM_DATA u16 gUnknown_203AB08 = 0;
+EWRAM_DATA u16 gUnknown_203AB0A = 0;
+EWRAM_DATA u16 gUnknown_203AB0C = 0;
+EWRAM_DATA u16 gUnknown_203AB0E = 0;
+EWRAM_DATA u16 gUnknown_203AB10 = 0;
+EWRAM_DATA u16 gUnknown_203AB12 = 0;
+EWRAM_DATA u16 gUnknown_203AB14 = 0;
+EWRAM_DATA u16 gUnknown_203AB16 = 0;
+EWRAM_DATA u16 gUnknown_203AB18 = 0;
+EWRAM_DATA u16 gUnknown_203AB1A = 0;
+EWRAM_DATA u16 gUnknown_203AB1C = 0;
+EWRAM_DATA u16 gUnknown_203AB1E = 0;
+EWRAM_DATA u16 gUnknown_203AB20 = 0;
+EWRAM_DATA u16 gUnknown_203AB22 = 0;
+EWRAM_DATA u16 gUnknown_203AB24 = 0;
+EWRAM_DATA u16 gUnknown_203AB26 = 0;
+EWRAM_DATA u32 gUnknown_203AB28 = 0;
+EWRAM_DATA u16 gUnknown_203AB2C = 0;
+EWRAM_DATA u16 gUnknown_203AB2E = 0;
 
 void sub_80EC870(void);
 void sub_80EC9D4(void);
@@ -68,12 +93,15 @@ void sub_80ED714(u8 taskId);
 void sub_80ED7D4(struct IntroSequenceData * ptr);
 void sub_80ED818(struct Sprite * sprite);
 void sub_80ED898(struct IntroSequenceData * ptr);
+void sub_80EDAF0(struct IntroSequenceData * ptr);
+void sub_80EDB70(struct IntroSequenceData * ptr);
+void sub_80EDBAC(struct IntroSequenceData * ptr);
 void sub_80EDBE8(struct IntroSequenceData * ptr);
-void sub_80ED40C(u8 taskId);
 void sub_80EDC40(void);
 void sub_80EDDF0(void);
 void sub_80EDED8(void);
 struct Sprite * sub_80EDF68(void);
+void sub_80EDF94(struct IntroSequenceData * ptr);
 void sub_80EE1C4(struct Sprite * sprite);
 void sub_80EE200(u8 taskId);
 void sub_80EE29C(struct Sprite * sprite);
@@ -82,7 +110,12 @@ void sub_80EE4DC(struct Sprite * sprite);
 void sub_80EE4F8(struct IntroSequenceData * ptr);
 void sub_80EE528(struct Sprite * sprite, u16 a1, u16 a2, u16 a3);
 bool32 sub_80EE5C8(struct IntroSequenceData * ptr);
+void sub_80EE5E4(struct IntroSequenceData * ptr);
+void sub_80EE6A4(struct IntroSequenceData * ptr);
+bool8 sub_80EE850(struct IntroSequenceData * ptr);
 void sub_80EE8E4(struct Sprite * sprite);
+void sub_80EE970(struct Sprite * sprite, s16 a1, u16 a2, u8 a3);
+void sub_80EEA94(struct IntroSequenceData * ptr);
 void sub_80EEBE4(void);
 
 extern const u32 gMultiBootProgram_PokemonColosseum_Start[];
@@ -1205,3 +1238,247 @@ void sub_80ED818(struct Sprite * sprite)
         break;
     }
 }
+
+void sub_80ED898(struct IntroSequenceData * this)
+{
+    switch (this->field_0004)
+    {
+    case 0:
+        this->field_0012 = 0;
+        this->field_0004++;
+        break;
+    case 1:
+        this->field_0012++;
+        if (this->field_0012 > 30)
+        {
+            sub_80EE5E4(this);
+            this->field_0004++;
+        }
+        break;
+    case 2:
+        if (!sub_80EE850(this))
+        {
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 3:
+        this->field_0012++;
+        if (this->field_0012 > 30)
+        {
+            sub_80ED760();
+            sub_80EDF94(this);
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 4:
+        if (this->field_0006)
+        {
+            sub_80EE6A4(this);
+            this->field_0004++;
+        }
+        break;
+    case 5:
+        if (!sub_80EE850(this))
+        {
+            sub_80ED788();
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 6:
+        this->field_0012++;
+        if (this->field_0012 > 16)
+        {
+            sub_80EE970(this->field_0018, 8, 12, 5);
+            this->field_0004++;
+        }
+        break;
+    case 7:
+        if (!sub_80EE850(this))
+        {
+            sub_80EE970(this->field_0018, 8, 12, 5);
+            this->field_0004++;
+        }
+        break;
+    case 8:
+        if (!sub_80EE850(this))
+        {
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 9:
+        this->field_0012++;
+        if (this->field_0012 > 20)
+        {
+            sub_80EEA94(this);
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 10:
+        if (!sub_80ED7B0())
+        {
+            sub_80ED760();
+            sub_80EDAF0(this);
+            this->field_0004++;
+        }
+        break;
+    case 11:
+        HideBg(0);
+        this->field_0012 = 0;
+        this->field_0004++;
+        break;
+    case 12:
+        this->field_0012++;
+        if (this->field_0012 == 48)
+            BeginNormalPaletteFade(0x00000006, 2, 0, 16, RGB_WHITE);
+        if (this->field_0012 > 120)
+        {
+            sub_80EDB70(this);
+            sub_80EDBAC(this);
+            this->field_0004++;
+            this->field_0012 = 0;
+        }
+        break;
+    case 13:
+        this->field_0012++;
+        if (this->field_0012 > 8)
+        {
+            CpuFill16(RGB_WHITE, gPlttBufferUnfaded + 16, 64);
+            BeginNormalPaletteFade(0xFFFFFFFE, -2, 0, 16, RGB_BLACK);
+            this->field_0004++;
+        }
+        break;
+    case 14:
+        if (!gPaletteFade.active)
+        {
+            this->field_0012 = 0;
+            this->field_0004++;
+        }
+        break;
+    case 15:
+        this->field_0012++;
+        if (this->field_0012 > 60)
+            sub_80ECAA8(this, sub_80EDBE8);
+        break;
+    default:
+        if (JOY_NEW(R_BUTTON))
+        {
+            BlendPalettes(0xFFFF0064, 0, RGB_WHITE);
+            this->field_0018->pos2.x = 0;
+            this->field_0018->pos1.x = 0xB4;
+            this->field_0004 = 1;
+            this->field_0012 = 30;
+        }
+        break;
+    }
+}
+
+void sub_80EDAD8(struct Sprite * sprite)
+{
+    CalcCenterToCornerVec(sprite, sprite->oam.shape, sprite->oam.size, sprite->oam.affineMode);
+}
+
+void sub_80EDAF0(struct IntroSequenceData * this)
+{
+    int i;
+
+    for (i = 0; i < 4; i++)
+    {
+        int x = (i & 1) * 48 + 49;
+        int y = (i / 2) * 64 + 72;
+        u8 spriteId = CreateSprite(&gUnknown_840BE4C, x, y, 8);
+        if (spriteId != MAX_SPRITES)
+        {
+            StartSpriteAnim(&gSprites[spriteId], i);
+            this->field_0028[i] = &gSprites[spriteId];
+            if (i & 1)
+                this->field_0028[i]->oam.shape = ST_OAM_V_RECTANGLE;
+            sub_80EDAD8(this->field_0028[i]);
+        }
+    }
+}
+
+void sub_80EDB70(struct IntroSequenceData * this)
+{
+    this->field_0018->pos1.x += this->field_0018->pos2.x;
+    this->field_0018->pos1.y += this->field_0018->pos2.y;
+    sub_8007FFC(this->field_0018, 0, 0x2A);
+    this->field_0018->callback = SpriteCallbackDummy;
+    StartSpriteAffineAnim(this->field_0018, 1);
+}
+
+void nullsub_83(struct Sprite * sprite)
+{
+    
+}
+
+void sub_80EDBAC(struct IntroSequenceData * this)
+{
+    int i;
+    
+    for (i = 0; i < 4; i++)
+    {
+        StartSpriteAffineAnim(this->field_0028[i], 1);
+        this->field_0028[i]->callback = nullsub_83;
+        sub_8007FFC(this->field_0028[i], gUnknown_840BBB8[i][0], gUnknown_840BBB8[i][1]);
+    }
+}
+
+void sub_80EDBE8(struct IntroSequenceData * this)
+{
+    switch (this->field_0004)
+    {
+    case 0:
+        FillPalette(RGB_BLACK, 0, 0x400);
+        this->field_0004++;
+        break;
+    case 1:
+        if (!FreeTempTileDataBuffersIfPossible())
+        {
+            DestroyTask(this->field_0005);
+            Free(this);
+            DisableInterrupts(INTR_FLAG_HBLANK);
+            SetHBlankCallback(NULL);
+            SetMainCallback2(CB2_InitTitleScreen);
+        }
+        break;
+    }
+}
+
+void sub_80EDC40(void)
+{
+    int i;
+    u8 spriteId;
+    
+    for (i = 0; i < NELEMS(gUnknown_840BBC0); i++)
+    {
+        LoadCompressedSpriteSheet(&gUnknown_840BBC0[i]);
+    }
+    LoadSpritePalettes(gUnknown_840BBE8);
+    gUnknown_203AB0E = 0x60;
+    gUnknown_203AB10 = 0x10;
+    gUnknown_203AB12 = 0x07;
+    gUnknown_203AB14 = 0x05;
+    gUnknown_203AB16 = 0x08;
+    gUnknown_203AB18 = 0x5A;
+    gUnknown_203AB1A = 0x78;
+    gUnknown_203AB1E = 0x01;
+    gUnknown_203AB20 = 0x01;
+    gUnknown_203AB22 = 0x05;
+    gUnknown_203AB24 = 0x05;
+    if (gUnknown_203AB28 == 0)
+        gUnknown_203AB28 = 0x151B9245;
+    spriteId = CreateSprite(&gUnknown_840BC6C, 0xF8, 0x37, 0);
+    if (spriteId != MAX_SPRITES)
+    {
+        gSprites[spriteId].data[0] = 0xF80;
+        gSprites[spriteId].data[1] = 0x370;
+        gSprites[spriteId].data[2] = gUnknown_203AB0E;
+        gSprites[spriteId].data[3] = gUnknown_203AB10;
+        StoreWordInTwoHalfwords(&gSprites[spriteId].data[6], gUnknown_203AB28);
+    }
+}
diff --git a/sym_ewram.txt b/sym_ewram.txt
index ec2d2149d..58be99913 100644
--- a/sym_ewram.txt
+++ b/sym_ewram.txt
@@ -1114,63 +1114,7 @@ gUnknown_203AAC6: @ 203AAC6
 
 	.include "src/intro.o"
 
-gUnknown_203AB04: @ 203AB04
-	.space 0x2
-
-gUnknown_203AB06: @ 203AB06
-	.space 0x2
-
-gUnknown_203AB08: @ 203AB08
-	.space 0x2
-
-gUnknown_203AB0A: @ 203AB0A
-	.space 0x2
-
-gUnknown_203AB0C: @ 203AB0C
-	.space 0x2
-
-gUnknown_203AB0E: @ 203AB0E
-	.space 0x2
-
-gUnknown_203AB10: @ 203AB10
-	.space 0x2
-
-gUnknown_203AB12: @ 203AB12
-	.space 0x2
-
-gUnknown_203AB14: @ 203AB14
-	.space 0x2
-
-gUnknown_203AB16: @ 203AB16
-	.space 0x2
-
-gUnknown_203AB18: @ 203AB18
-	.space 0x2
-
-gUnknown_203AB1A: @ 203AB1A
-	.space 0x2
-
-gUnknown_203AB1C: @ 203AB1C
-	.space 0x2
-
-gUnknown_203AB1E: @ 203AB1E
-	.space 0x2
-
-gUnknown_203AB20: @ 203AB20
-	.space 0x2
-
-gUnknown_203AB22: @ 203AB22
-	.space 0x2
-
-gUnknown_203AB24: @ 203AB24
-	.space 0x4
-
-gUnknown_203AB28: @ 203AB28
-	.space 0x4
-
-gUnknown_203AB2C: @ 203AB2C
-	.space 0x4
-
+	.align 2
 gUnknown_203AB30: @ 203AB30
 	.space 0x4