Start intro_credits_graphics decomp

4 files changed, 488 insertions, 622 deletions

diff --git a/asm/intro_credits_graphics.s b/asm/intro_credits_graphics.s
index 3187138ce..aef83f35b 100644
--- a/asm/intro_credits_graphics.s
+++ b/asm/intro_credits_graphics.s
@@ -5,624 +5,6 @@
 
 	.text
 
-	thumb_func_start load_intro_part2_graphics
-load_intro_part2_graphics: @ 817B064
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, =gUnknown_085F0740
-	ldr r1, =0x06004000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F0BC0
-	ldr r1, =0x06007800
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F06E0
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	cmp r4, 0
-	beq _0817B08C
-	cmp r4, 0x1
-	beq _0817B0EC
-_0817B08C:
-	ldr r0, =gUnknown_085F0DBC
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1398
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F0CFC
-	movs r1, 0
-	movs r2, 0x60
-	bl LoadPalette
-	ldr r0, =gUnknown_085F5064
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085F1668
-	movs r1, 0x80
-	lsls r1, 1
-	movs r2, 0x20
-	bl LoadPalette
-	bl sub_817B76C
-	b _0817B11E
-	.pool
-_0817B0EC:
-	ldr r0, =gUnknown_085F1824
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1EAC
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F17E4
-	movs r1, 0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F50EC
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085F21B0
-	movs r1, 0x80
-	lsls r1, 1
-	movs r2, 0x20
-	bl LoadPalette
-	bl sub_817B788
-_0817B11E:
-	ldr r1, =gUnknown_0203BD28
-	movs r0, 0
-	strh r0, [r1]
-	ldr r1, =gReservedSpritePaletteCount
-	movs r0, 0x8
-	strb r0, [r1]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end load_intro_part2_graphics
-
-	thumb_func_start sub_817B150
-sub_817B150: @ 817B150
-	push {lr}
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	beq _0817B162
-	cmp r0, 0x1
-	ble _0817B162
-	cmp r0, 0x2
-	beq _0817B194
-_0817B162:
-	ldr r1, =0x00000603
-	movs r0, 0xE
-	bl SetGpuReg
-	ldr r1, =0x00000702
-	movs r0, 0xC
-	bl SetGpuReg
-	ldr r1, =0x00000f05
-	movs r0, 0xA
-	bl SetGpuReg
-	movs r1, 0xF2
-	lsls r1, 5
-	movs r0, 0
-	bl SetGpuReg
-	b _0817B1B6
-	.pool
-_0817B194:
-	ldr r1, =0x00000603
-	movs r0, 0xE
-	bl SetGpuReg
-	ldr r1, =0x00000702
-	movs r0, 0xC
-	bl SetGpuReg
-	ldr r1, =0x00000f05
-	movs r0, 0xA
-	bl SetGpuReg
-	movs r1, 0xF2
-	lsls r1, 5
-	movs r0, 0
-	bl SetGpuReg
-_0817B1B6:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B150
-
-	thumb_func_start sub_817B1C8
-sub_817B1C8: @ 817B1C8
-	push {r4,lr}
-	lsls r0, 24
-	lsrs r4, r0, 24
-	ldr r0, =gUnknown_085F0740
-	ldr r1, =0x06004000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F0BC0
-	ldr r1, =0x06007800
-	bl LZ77UnCompVram
-	cmp r4, 0x4
-	bhi _0817B214
-	lsls r0, r4, 2
-	ldr r1, =_0817B200
-	adds r0, r1
-	ldr r0, [r0]
-	mov pc, r0
-	.pool
-	.align 2, 0
-_0817B200:
-	.4byte _0817B214
-	.4byte _0817B270
-	.4byte _0817B2DC
-	.4byte _0817B2DC
-	.4byte _0817B334
-_0817B214:
-	ldr r0, =gUnknown_085F06E0
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F0DBC
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1398
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F0CFC
-	movs r1, 0
-	movs r2, 0x60
-	bl LoadPalette
-	ldr r0, =gUnknown_085F5064
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085F16A8
-	ldr r1, =0x06010000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1668
-	b _0817B2A6
-	.pool
-_0817B270:
-	ldr r0, =gUnknown_085F0700
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F0DBC
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1398
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F0D5C
-	movs r1, 0
-	movs r2, 0x60
-	bl LoadPalette
-	ldr r0, =gUnknown_085F5064
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085F16A8
-	ldr r1, =0x06010000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1688
-_0817B2A6:
-	movs r1, 0x80
-	lsls r1, 1
-	movs r2, 0x20
-	bl LoadPalette
-	bl sub_817B76C
-	b _0817B370
-	.pool
-_0817B2DC:
-	ldr r0, =gUnknown_085F0700
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F1824
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F1EAC
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r4, =gUnknown_085F1804
-	adds r0, r4, 0
-	movs r1, 0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F50EC
-	bl LoadCompressedObjectPic
-	movs r1, 0x80
-	lsls r1, 1
-	adds r0, r4, 0
-	movs r2, 0x20
-	bl LoadPalette
-	bl sub_817B788
-	b _0817B370
-	.pool
-_0817B334:
-	ldr r0, =gUnknown_085F0720
-	movs r1, 0xF0
-	movs r2, 0x20
-	bl LoadPalette
-	ldr r0, =gUnknown_085F235C
-	movs r1, 0xC0
-	lsls r1, 19
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F2568
-	ldr r1, =0x06003000
-	bl LZ77UnCompVram
-	ldr r0, =gUnknown_085F231C
-	movs r1, 0
-	movs r2, 0x40
-	bl LoadPalette
-	ldr r0, =gUnknown_085F5180
-	bl LoadCompressedObjectPic
-	ldr r0, =gUnknown_085F2548
-	movs r1, 0x80
-	lsls r1, 1
-	movs r2, 0x20
-	bl LoadPalette
-	bl sub_817B7A4
-_0817B370:
-	ldr r1, =gReservedSpritePaletteCount
-	movs r0, 0x8
-	strb r0, [r1]
-	ldr r1, =gUnknown_0203BD28
-	movs r0, 0
-	strh r0, [r1]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B1C8
-
-	thumb_func_start sub_817B3A8
-sub_817B3A8: @ 817B3A8
-	push {lr}
-	ldr r1, =0x00000603
-	movs r0, 0xE
-	bl SetGpuReg
-	ldr r1, =0x00000702
-	movs r0, 0xC
-	bl SetGpuReg
-	ldr r1, =0x00000f05
-	movs r0, 0xA
-	bl SetGpuReg
-	movs r1, 0xFA
-	lsls r1, 5
-	movs r0, 0
-	bl SetGpuReg
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B3A8
-
-	thumb_func_start sub_817B3DC
-sub_817B3DC: @ 817B3DC
-	push {r4-r6,lr}
-	mov r6, r9
-	mov r5, r8
-	push {r5,r6}
-	sub sp, 0x4
-	adds r5, r0, 0
-	adds r6, r1, 0
-	mov r8, r2
-	lsls r5, 24
-	lsrs r5, 24
-	lsls r6, 16
-	lsrs r6, 16
-	mov r0, r8
-	lsls r0, 16
-	lsrs r0, 16
-	mov r8, r0
-	lsls r3, 16
-	lsrs r3, 16
-	ldr r1, =sub_817B458
-	mov r9, r1
-	mov r0, r9
-	movs r1, 0
-	str r3, [sp]
-	bl CreateTask
-	adds r4, r0, 0
-	lsls r4, 24
-	lsrs r4, 24
-	ldr r1, =gTasks
-	lsls r0, r4, 2
-	adds r0, r4
-	lsls r0, 3
-	adds r0, r1
-	movs r2, 0
-	strh r5, [r0, 0x8]
-	strh r6, [r0, 0xA]
-	strh r2, [r0, 0xC]
-	strh r2, [r0, 0xE]
-	mov r1, r8
-	strh r1, [r0, 0x10]
-	strh r2, [r0, 0x12]
-	strh r2, [r0, 0x14]
-	ldr r3, [sp]
-	strh r3, [r0, 0x16]
-	movs r1, 0x8
-	strh r1, [r0, 0x18]
-	strh r2, [r0, 0x1A]
-	adds r0, r4, 0
-	bl _call_via_r9
-	adds r0, r4, 0
-	add sp, 0x4
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r6}
-	pop {r1}
-	bx r1
-	.pool
-	thumb_func_end sub_817B3DC
-
-	thumb_func_start sub_817B458
-sub_817B458: @ 817B458
-	push {r4,r5,lr}
-	lsls r0, 24
-	lsrs r5, r0, 24
-	ldr r1, =gTasks
-	lsls r0, r5, 2
-	adds r0, r5
-	lsls r0, 3
-	adds r4, r0, r1
-	ldrh r0, [r4, 0xA]
-	lsls r2, r0, 16
-	cmp r2, 0
-	beq _0817B4A0
-	movs r1, 0xC
-	ldrsh r0, [r4, r1]
-	lsls r0, 16
-	ldrh r1, [r4, 0xE]
-	adds r1, r0, r1
-	lsrs r0, r2, 12
-	subs r1, r0
-	asrs r0, r1, 16
-	strh r0, [r4, 0xC]
-	strh r1, [r4, 0xE]
-	ldrh r1, [r4, 0xC]
-	movs r0, 0x14
-	bl SetGpuReg
-	ldr r2, =gUnknown_0203BD24
-	ldr r0, =gUnknown_0203BD26
-	ldrh r1, [r0]
-	ldrh r2, [r2]
-	adds r1, r2
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0x16
-	bl SetGpuReg
-_0817B4A0:
-	ldrh r0, [r4, 0x10]
-	lsls r2, r0, 16
-	cmp r2, 0
-	beq _0817B4FA
-	movs r1, 0x12
-	ldrsh r0, [r4, r1]
-	lsls r0, 16
-	ldrh r1, [r4, 0x14]
-	adds r1, r0, r1
-	lsrs r0, r2, 12
-	subs r1, r0
-	asrs r0, r1, 16
-	strh r0, [r4, 0x12]
-	strh r1, [r4, 0x14]
-	ldrh r1, [r4, 0x12]
-	movs r0, 0x18
-	bl SetGpuReg
-	movs r1, 0x8
-	ldrsh r0, [r4, r1]
-	cmp r0, 0
-	beq _0817B4F0
-	ldr r2, =gUnknown_0203BD24
-	ldr r0, =gUnknown_0203BD26
-	ldrh r1, [r0]
-	ldrh r2, [r2]
-	adds r1, r2
-	lsls r1, 16
-	lsrs r1, 16
-	movs r0, 0x1A
-	bl SetGpuReg
-	b _0817B4FA
-	.pool
-_0817B4F0:
-	ldr r0, =gUnknown_0203BD24
-	ldrh r1, [r0]
-	movs r0, 0x1A
-	bl SetGpuReg
-_0817B4FA:
-	ldr r0, =gTasks
-	lsls r1, r5, 2
-	adds r1, r5
-	lsls r1, 3
-	adds r2, r1, r0
-	ldrh r0, [r2, 0x16]
-	lsls r3, r0, 16
-	cmp r3, 0
-	beq _0817B532
-	movs r1, 0x18
-	ldrsh r0, [r2, r1]
-	lsls r0, 16
-	ldrh r1, [r2, 0x1A]
-	adds r1, r0, r1
-	lsrs r0, r3, 12
-	subs r1, r0
-	asrs r0, r1, 16
-	strh r0, [r2, 0x18]
-	strh r1, [r2, 0x1A]
-	ldrh r1, [r2, 0x18]
-	movs r0, 0x1C
-	bl SetGpuReg
-	ldr r0, =gUnknown_0203BD24
-	ldrh r1, [r0]
-	movs r0, 0x1E
-	bl SetGpuReg
-_0817B532:
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B458
-
-	thumb_func_start sub_817B540
-sub_817B540: @ 817B540
-	push {r4,lr}
-	sub sp, 0x4
-	lsls r0, 24
-	lsrs r0, 24
-	cmp r0, 0x1
-	beq _0817B620
-	cmp r0, 0x1
-	ble _0817B554
-	cmp r0, 0x2
-	beq _0817B5B8
-_0817B554:
-	ldr r0, =gMain
-	ldr r2, [r0, 0x20]
-	movs r0, 0x3
-	ands r0, r2
-	cmp r0, 0
-	bne _0817B620
-	ldr r0, =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0817B620
-	movs r0, 0x4
-	ands r2, r0
-	cmp r2, 0
-	beq _0817B58C
-	ldr r2, =gPlttBufferUnfaded
-	ldrh r1, [r2, 0x12]
-	mov r0, sp
-	strh r1, [r0]
-	ldrh r1, [r2, 0x14]
-	b _0817B596
-	.pool
-_0817B58C:
-	ldr r2, =gPlttBufferUnfaded
-	ldrh r1, [r2, 0x14]
-	mov r0, sp
-	strh r1, [r0]
-	ldrh r1, [r2, 0x12]
-_0817B596:
-	adds r0, 0x2
-	strh r1, [r0]
-	adds r4, r0, 0
-	mov r0, sp
-	movs r1, 0x9
-	movs r2, 0x2
-	bl LoadPalette
-	adds r0, r4, 0
-	movs r1, 0xA
-	movs r2, 0x2
-	bl LoadPalette
-	b _0817B620
-	.pool
-_0817B5B8:
-	ldr r0, =gMain
-	ldr r2, [r0, 0x20]
-	movs r0, 0x3
-	ands r0, r2
-	cmp r0, 0
-	bne _0817B620
-	ldr r0, =gPaletteFade
-	ldrb r1, [r0, 0x7]
-	movs r0, 0x80
-	ands r0, r1
-	cmp r0, 0
-	bne _0817B620
-	movs r0, 0x4
-	ands r2, r0
-	cmp r2, 0
-	beq _0817B5F8
-	mov r1, sp
-	ldr r2, =0x00003d27
-	adds r0, r2, 0
-	strh r0, [r1]
-	adds r1, 0x2
-	ldr r2, =0x00000295
-	b _0817B606
-	.pool
-_0817B5F8:
-	mov r1, sp
-	movs r2, 0xC7
-	lsls r2, 2
-	adds r0, r2, 0
-	strh r0, [r1]
-	adds r1, 0x2
-	ldr r2, =0x00003d27
-_0817B606:
-	adds r0, r2, 0
-	strh r0, [r1]
-	adds r4, r1, 0
-	mov r0, sp
-	movs r1, 0xC
-	movs r2, 0x2
-	bl LoadPalette
-	adds r0, r4, 0
-	movs r1, 0xD
-	movs r2, 0x2
-	bl LoadPalette
-_0817B620:
-	add sp, 0x4
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B540
-
-	thumb_func_start sub_817B62C
-sub_817B62C: @ 817B62C
-	push {lr}
-	adds r2, r0, 0
-	ldr r0, =gUnknown_0203BD28
-	movs r1, 0
-	ldrsh r0, [r0, r1]
-	cmp r0, 0x2
-	beq _0817B690
-	cmp r0, 0
-	beq _0817B64C
-	adds r0, r2, 0
-	bl DestroySprite
-	b _0817B690
-	.pool
-_0817B64C:
-	movs r1, 0x20
-	ldrsh r0, [r2, r1]
-	lsls r0, 16
-	ldrh r1, [r2, 0x32]
-	orrs r0, r1
-	ldrh r1, [r2, 0x30]
-	adds r0, r1
-	asrs r1, r0, 16
-	strh r1, [r2, 0x20]
-	strh r0, [r2, 0x32]
-	cmp r1, 0xFF
-	ble _0817B668
-	ldr r0, =0x0000ffe0
-	strh r0, [r2, 0x20]
-_0817B668:
-	movs r1, 0x2E
-	ldrsh r0, [r2, r1]
-	cmp r0, 0
-	beq _0817B688
-	ldr r1, =gUnknown_0203BD24
-	ldr r0, =gUnknown_0203BD26
-	ldrh r0, [r0]
-	ldrh r1, [r1]
-	adds r0, r1
-	b _0817B68C
-	.pool
-_0817B688:
-	ldr r0, =gUnknown_0203BD24
-	ldrh r0, [r0]
-_0817B68C:
-	negs r0, r0
-	strh r0, [r2, 0x26]
-_0817B690:
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_817B62C
-
 	thumb_func_start sub_817B698
 sub_817B698: @ 817B698
 	push {r4-r7,lr}
diff --git a/include/intro_credits_graphics.h b/include/intro_credits_graphics.h
index 4e5d025a5..07c2e51a0 100644
--- a/include/intro_credits_graphics.h
+++ b/include/intro_credits_graphics.h
@@ -2,8 +2,8 @@
 #define GUARD_INTRO_CREDITS_GRAPHICS_H
 
 extern u16 gUnknown_0203BD24;
-extern u16 gUnknown_0203BD26;
-extern u16 gUnknown_0203BD28;
+extern s16 gUnknown_0203BD26;
+extern s16 gUnknown_0203BD28;
 
 extern const struct CompressedSpriteSheet gIntro2BrendanSpriteSheet[];
 extern const struct CompressedSpriteSheet gIntro2MaySpriteSheet[];
@@ -14,6 +14,7 @@ extern const struct SpritePalette gUnknown_085F530C[];
 void load_intro_part2_graphics(u8 a);
 void sub_817B150(u8 a);
 u8 sub_817B3DC(u8 a, u16 b, u16 c, u16 d);
+void sub_817B458(u8);
 void sub_817B540(u8);
 u8 intro_create_brendan_sprite(s16 a, s16 b);
 u8 intro_create_may_sprite(s16 a, s16 b);
diff --git a/ld_script.txt b/ld_script.txt
index e282cd418..6bae74b38 100644
--- a/ld_script.txt
+++ b/ld_script.txt
@@ -232,6 +232,7 @@ SECTIONS {
         src/braille_puzzles.o(.text);
         src/pokeblock_feed.o(.text);
         src/clear_save_data_screen.o(.text);
+        src/intro_credits_graphics.o(.text);
         asm/intro_credits_graphics.o(.text);
         src/evolution_graphics.o(.text);
         src/bard_music.o(.text);
diff --git a/src/intro_credits_graphics.c b/src/intro_credits_graphics.c
index b287f6b10..a3f4f36c2 100644
--- a/src/intro_credits_graphics.c
+++ b/src/intro_credits_graphics.c
@@ -1,5 +1,487 @@
 #include "global.h"
+#include "intro_credits_graphics.h"
+#include "palette.h"
+#include "decompress.h"
+#include "gpu_regs.h"
+#include "task.h"
+#include "main.h"
 
 EWRAM_DATA u16 gUnknown_0203BD24 = 0;
-EWRAM_DATA u16 gUnknown_0203BD26 = 0;
-EWRAM_DATA u16 gUnknown_0203BD28 = 0;
+EWRAM_DATA s16 gUnknown_0203BD26 = 0;
+EWRAM_DATA s16 gUnknown_0203BD28 = 0;
+
+extern const u16 gUnknown_085F06E0[]/* = INCBIN_U16("graphics/intro/intro2_grass.gbapal")*/;
+extern const u16 gUnknown_085F0700[]/* = INCBIN_U16("graphics/intro/intro2_grass_afternoon.gbapal")*/;
+extern const u16 gUnknown_085F0720[]/* = INCBIN_U16("graphics/intro/intro2_grass_night.gbapal")*/;
+extern const u8 gUnknown_085F0740[]/* = INCBIN_U8("graphics/intro/intro2_grass.4bpp.lz")*/;
+extern const u8 gUnknown_085F0BC0[]/* = INCBIN_U8("graphics/intro/intro2_grass_map.bin.lz")*/;
+extern const u16 gUnknown_085F0CFC[]/* = INCBIN_U16("graphics/intro/8412818.gbapal")*/;
+extern const u16 gUnknown_085F0D5C[]/* = INCBIN_U16("graphics/intro/8412878.gbapal")*/;
+extern const u8 gUnknown_085F0DBC[]/* = INCBIN_U8("graphics/intro/intro2_bgclouds.4bpp.lz")*/;
+extern const u8 gUnknown_085F1398[]/* = INCBIN_U8("graphics/intro/intro2_bgclouds_map.bin.lz")*/;
+extern const u16 gUnknown_085F1668[]/* = INCBIN_U16("graphics/intro/intro2_bgclouds.gbapal")*/;
+extern const u16 gUnknown_085F1688[]/* = INCBIN_U16("graphics/intro/intro2_bgclouds_afternoon.gbapal")*/;
+extern const u8 gUnknown_085F16A8[]/* = INCBIN_U8("graphics/intro/intro2_bgclouds2.4bpp.lz")*/;
+extern const u16 gUnknown_085F17E4[]/* = INCBIN_U16("graphics/intro/intro2_bgtrees2.gbapal")*/;
+extern const u16 gUnknown_085F1804[]/* = INCBIN_U16("graphics/intro/intro2_bgtrees2_afternoon.gbapal")*/;
+extern const u8 gUnknown_085F1824[]/* = INCBIN_U8("graphics/intro/intro2_bgtrees.4bpp.lz")*/;
+extern const u8 gUnknown_085F1EAC[]/* = INCBIN_U8("graphics/intro/intro2_bgtrees_map.bin.lz")*/;
+extern const u16 gUnknown_085F21B0[]/* = INCBIN_U16("graphics/intro/intro2_bgtrees.gbapal")*/;
+extern const u8 gIntro2TreeTiles[]/* = INCBIN_U8("graphics/intro/intro2_bgtreessmall.4bpp.lz")*/;
+extern const u16 gUnknown_085F231C[]/* = INCBIN_U16("graphics/intro/8413E38.gbapal")*/;
+extern const u8 gUnknown_085F235C[]/* = INCBIN_U8("graphics/intro/intro2_bgnight.4bpp.lz")*/; // only used in credits, coupled with intro because bicycle sequence
+extern const u16 gUnknown_085F2548[]/* = INCBIN_U16("graphics/intro/intro2_bgnight.gbapal")*/;
+extern const u8 gUnknown_085F2568[]/* = INCBIN_U8("graphics/intro/intro2_bgnight_map.bin.lz")*/;
+extern const u8 gIntro2NightTiles[]/* = INCBIN_U8("graphics/intro/intro2_night.4bpp.lz")*/;
+extern const u16 gIntro2BrendanPalette[]/* = INCBIN_U16("graphics/intro/intro2_brendan.gbapal")*/;
+extern const u8 gIntro2BrendanTiles[]/* = INCBIN_U8("graphics/intro/intro2_brendan.4bpp.lz")*/;
+extern const u16 gIntro2MayPalette[]/* = INCBIN_U16("graphics/intro/intro2_may.gbapal")*/;
+extern const u16 gUnknown_08414F90[0xF0]/* = {0}*/;
+extern const u8 gIntro2MayTiles[]/* = INCBIN_U8("graphics/intro/intro2_may.4bpp.lz")*/;
+extern const u8 gIntro2BicycleTiles[]/* = INCBIN_U8("graphics/intro/intro2_bicycle.4bpp.lz")*/;
+extern const u16 gIntro2LatiosPalette[]/* = INCBIN_U16("graphics/intro/intro2_latios.gbapal")*/;
+extern const u8 gIntro2LatiosTiles[]/* = INCBIN_U8("graphics/intro/intro2_latios.4bpp.lz")*/;
+extern const u16 gIntro2LatiasPalette[]/* = INCBIN_U16("graphics/intro/intro2_latias.gbapal")*/;
+extern const u8 gIntro2LatiasTiles[]/* = INCBIN_U8("graphics/intro/intro2_latias.4bpp.lz")*/;
+
+extern const struct CompressedSpriteSheet gUnknown_085F5064[]/* = {
+    { gUnknown_085F16A8, 0x400, 2000 },
+    {}
+}*/;
+
+extern const struct CompressedSpriteSheet gUnknown_085F50EC[]/* = {
+    { gIntro2TreeTiles, 0x400, 2000 },
+    {}
+}*/;
+
+extern const struct CompressedSpriteSheet gUnknown_085F5180[]/* = {
+    { gIntro2NightTiles, 0x400, 2000 },
+    {}
+}*/;
+
+void sub_817B76C();
+void sub_817B788();
+void sub_817B7A4();
+
+void load_intro_part2_graphics(u8 a)
+{
+    LZ77UnCompVram(&gUnknown_085F0740, (void *)(VRAM + 0x4000));
+    LZ77UnCompVram(&gUnknown_085F0BC0, (void *)(VRAM + 0x7800));
+    LoadPalette(&gUnknown_085F06E0, 240, 32);
+    switch (a)
+    {
+    case 0:
+    default:
+        LZ77UnCompVram(&gUnknown_085F0DBC, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F1398, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F0CFC, 0, 96);
+        LoadCompressedObjectPic(gUnknown_085F5064);
+        LoadPalette(&gUnknown_085F1668, 256, 32);
+        sub_817B76C();
+        break;
+    case 1:
+        LZ77UnCompVram(&gUnknown_085F1824, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F1EAC, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F17E4, 0, 32);
+        LoadCompressedObjectPic(gUnknown_085F50EC);
+        LoadPalette(&gUnknown_085F21B0, 256, 32);
+        sub_817B788();
+        break;
+    }
+    gUnknown_0203BD28 = 0;
+    gReservedSpritePaletteCount = 8;
+}
+
+void sub_817B150(u8 a)
+{
+    switch (a)
+    {
+    default:
+    case 0:
+        SetGpuReg(REG_OFFSET_BG3CNT, BGCNT_PRIORITY(3)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(6)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(7)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(1)
+                                   | BGCNT_CHARBASE(1)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(15)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0
+                                    | DISPCNT_OBJ_1D_MAP
+                                    | DISPCNT_BG1_ON
+                                    | DISPCNT_BG2_ON
+                                    | DISPCNT_BG3_ON
+                                    | DISPCNT_OBJ_ON);
+        break;
+    case 1:
+        SetGpuReg(REG_OFFSET_BG3CNT, BGCNT_PRIORITY(3)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(6)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(7)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(1)
+                                   | BGCNT_CHARBASE(1)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(15)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0
+                                    | DISPCNT_OBJ_1D_MAP
+                                    | DISPCNT_BG1_ON
+                                    | DISPCNT_BG2_ON
+                                    | DISPCNT_BG3_ON
+                                    | DISPCNT_OBJ_ON);
+        break;
+    case 2:
+        SetGpuReg(REG_OFFSET_BG3CNT, BGCNT_PRIORITY(3)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(6)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2)
+                                   | BGCNT_CHARBASE(0)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(7)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(1)
+                                   | BGCNT_CHARBASE(1)
+                                   | BGCNT_16COLOR
+                                   | BGCNT_SCREENBASE(15)
+                                   | BGCNT_TXT256x256);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0
+                                    | DISPCNT_OBJ_1D_MAP
+                                    | DISPCNT_BG1_ON
+                                    | DISPCNT_BG2_ON
+                                    | DISPCNT_BG3_ON
+                                    | DISPCNT_OBJ_ON);
+        break;
+    }
+}
+
+void sub_817B1C8(u8 a)
+{
+    LZ77UnCompVram(&gUnknown_085F0740, (void *)(VRAM + 0x4000));
+    LZ77UnCompVram(&gUnknown_085F0BC0, (void *)(VRAM + 0x7800));
+    switch (a)
+    {
+    case 0:
+    default:
+        LoadPalette(&gUnknown_085F06E0, 240, 32);
+        LZ77UnCompVram(&gUnknown_085F0DBC, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F1398, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F0CFC, 0, 96);
+        LoadCompressedObjectPic(gUnknown_085F5064);
+        LZ77UnCompVram(&gUnknown_085F16A8, (void *)(VRAM + 0x10000));
+        LoadPalette(&gUnknown_085F1668, 256, 32);
+        sub_817B76C();
+        break;
+    case 1:
+        LoadPalette(&gUnknown_085F0700, 240, 32);
+        LZ77UnCompVram(&gUnknown_085F0DBC, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F1398, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F0D5C, 0, 96);
+        LoadCompressedObjectPic(gUnknown_085F5064);
+        LZ77UnCompVram(&gUnknown_085F16A8, (void *)(VRAM + 0x10000));
+        LoadPalette(&gUnknown_085F1688, 256, 32);
+        sub_817B76C();
+        break;
+    case 2:
+    case 3:
+        LoadPalette(&gUnknown_085F0700, 240, 32);
+        LZ77UnCompVram(&gUnknown_085F1824, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F1EAC, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F1804, 0, 32);
+        LoadCompressedObjectPic(gUnknown_085F50EC);
+        LoadPalette(&gUnknown_085F1804, 256, 32);
+        sub_817B788();
+        break;
+    case 4:
+        LoadPalette(&gUnknown_085F0720, 240, 32);
+        LZ77UnCompVram(&gUnknown_085F235C, (void *)(VRAM));
+        LZ77UnCompVram(&gUnknown_085F2568, (void *)(VRAM + 0x3000));
+        LoadPalette(&gUnknown_085F231C, 0, 64);
+        LoadCompressedObjectPic(gUnknown_085F5180);
+        LoadPalette(&gUnknown_085F2548, 256, 32);
+        sub_817B7A4();
+        break;
+    }
+    gReservedSpritePaletteCount = 8;
+    gUnknown_0203BD28 = 0;
+}
+
+void sub_817B3A8(u8 a)
+{
+    SetGpuReg(REG_OFFSET_BG3CNT, BGCNT_PRIORITY(3)
+                               | BGCNT_CHARBASE(0)
+                               | BGCNT_16COLOR
+                               | BGCNT_SCREENBASE(6)
+                               | BGCNT_TXT256x256);
+    SetGpuReg(REG_OFFSET_BG2CNT, BGCNT_PRIORITY(2)
+                               | BGCNT_CHARBASE(0)
+                               | BGCNT_16COLOR
+                               | BGCNT_SCREENBASE(7)
+                               | BGCNT_TXT256x256);
+    SetGpuReg(REG_OFFSET_BG1CNT, BGCNT_PRIORITY(1)
+                               | BGCNT_CHARBASE(1)
+                               | BGCNT_16COLOR
+                               | BGCNT_SCREENBASE(15)
+                               | BGCNT_TXT256x256);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_MODE_0
+                                | DISPCNT_OBJ_1D_MAP
+                                | DISPCNT_BG_ALL_ON
+                                | DISPCNT_OBJ_ON);
+}
+
+u8 sub_817B3DC(u8 a, u16 b, u16 c, u16 d)
+{
+    u8 taskId = CreateTask(&sub_817B458, 0);
+
+    gTasks[taskId].data[0] = a;
+    gTasks[taskId].data[1] = b;
+    gTasks[taskId].data[2] = 0;
+    gTasks[taskId].data[3] = 0;
+    gTasks[taskId].data[4] = c;
+    gTasks[taskId].data[5] = 0;
+    gTasks[taskId].data[6] = 0;
+    gTasks[taskId].data[7] = d;
+    gTasks[taskId].data[8] = 8;
+    gTasks[taskId].data[9] = 0;
+    sub_817B458(taskId);
+    return taskId;
+}
+
+#ifdef NONMATCHING
+void sub_817B458(u8 taskId)
+{
+    s16 r4;
+    s32 r2;
+
+    r4 = gTasks[taskId].data[1];
+    if (r4 != 0)
+    {
+        r2 = (gTasks[taskId].data[2] << 16) + (u16)gTasks[taskId].data[3];
+        r2 -= (u16)r4 << 4;
+        gTasks[taskId].data[2] = r2 >> 16;
+        gTasks[taskId].data[3] = r2;
+        SetGpuReg(REG_OFFSET_BG1HOFS, gTasks[taskId].data[2]);
+        SetGpuReg(REG_OFFSET_BG1VOFS, gUnknown_0203BD24 + gUnknown_0203BD26);
+    }
+
+    r4 = gTasks[taskId].data[4];
+    if (r4 != 0)
+    {
+        r2 = (gTasks[taskId].data[5] << 16) + (u16)gTasks[taskId].data[6];
+        r2 -= (u16)r4 << 4;
+        gTasks[taskId].data[5] = r2 >> 16;
+        gTasks[taskId].data[6] = r2;
+        SetGpuReg(REG_OFFSET_BG2HOFS, gTasks[taskId].data[5]);
+        if (gTasks[taskId].data[0] != 0)
+            SetGpuReg(REG_OFFSET_BG2VOFS, gUnknown_0203BD24 + gUnknown_0203BD26);
+        else
+            SetGpuReg(REG_OFFSET_BG2VOFS, gUnknown_0203BD24);
+    }
+
+    r4 = gTasks[taskId].data[7];
+    if (r4 != 0)
+    {
+        r2 = (gTasks[taskId].data[8] << 16) + (u16)gTasks[taskId].data[9];
+        r2 -= (u16)r4 << 4;
+        gTasks[taskId].data[8] = r2 >> 16;
+        gTasks[taskId].data[9] = r2;
+        SetGpuReg(REG_OFFSET_BG3HOFS, gTasks[taskId].data[8]);
+        SetGpuReg(REG_OFFSET_BG3VOFS, gUnknown_0203BD24);
+    }
+}
+#else
+ASM_DIRECT
+void sub_817B458(u8 taskId)
+{
+    asm("push {r4,r5,lr}\n\
+	lsl r0, #24\n\
+	lsr r5, r0, #24\n\
+	ldr r1, =gTasks\n\
+	lsl r0, r5, #2\n\
+	add r0, r5\n\
+	lsl r0, #3\n\
+	add r4, r0, r1\n\
+	ldrh r0, [r4, #0xA]\n\
+	lsl r2, r0, #16\n\
+	cmp r2, #0\n\
+	beq _0817B4A0\n\
+	mov r1, #0xC\n\
+	ldrsh r0, [r4, r1]\n\
+	lsl r0, #16\n\
+	ldrh r1, [r4, #0xE]\n\
+	add r1, r0, r1\n\
+	lsr r0, r2, #12\n\
+	sub r1, r0\n\
+	asr r0, r1, #16\n\
+	strh r0, [r4, #0xC]\n\
+	strh r1, [r4, #0xE]\n\
+	ldrh r1, [r4, #0xC]\n\
+	mov r0, #0x14\n\
+	bl SetGpuReg\n\
+	ldr r2, =gUnknown_0203BD24\n\
+	ldr r0, =gUnknown_0203BD26\n\
+	ldrh r1, [r0]\n\
+	ldrh r2, [r2]\n\
+	add r1, r2\n\
+	lsl r1, #16\n\
+	lsr r1, #16\n\
+	mov r0, #0x16\n\
+	bl SetGpuReg\n\
+_0817B4A0:\n\
+	ldrh r0, [r4, #0x10]\n\
+	lsl r2, r0, #16\n\
+	cmp r2, #0\n\
+	beq _0817B4FA\n\
+	mov r1, #0x12\n\
+	ldrsh r0, [r4, r1]\n\
+	lsl r0, #16\n\
+	ldrh r1, [r4, #0x14]\n\
+	add r1, r0, r1\n\
+	lsr r0, r2, #12\n\
+	sub r1, r0\n\
+	asr r0, r1, #16\n\
+	strh r0, [r4, #0x12]\n\
+	strh r1, [r4, #0x14]\n\
+	ldrh r1, [r4, #0x12]\n\
+	mov r0, #0x18\n\
+	bl SetGpuReg\n\
+	mov r1, #0x8\n\
+	ldrsh r0, [r4, r1]\n\
+	cmp r0, #0\n\
+	beq _0817B4F0\n\
+	ldr r2, =gUnknown_0203BD24\n\
+	ldr r0, =gUnknown_0203BD26\n\
+	ldrh r1, [r0]\n\
+	ldrh r2, [r2]\n\
+	add r1, r2\n\
+	lsl r1, #16\n\
+	lsr r1, #16\n\
+	mov r0, #0x1A\n\
+	bl SetGpuReg\n\
+	b _0817B4FA\n\
+	.pool\n\
+_0817B4F0:\n\
+	ldr r0, =gUnknown_0203BD24\n\
+	ldrh r1, [r0]\n\
+	mov r0, #0x1A\n\
+	bl SetGpuReg\n\
+_0817B4FA:\n\
+	ldr r0, =gTasks\n\
+	lsl r1, r5, #2\n\
+	add r1, r5\n\
+	lsl r1, #3\n\
+	add r2, r1, r0\n\
+	ldrh r0, [r2, #0x16]\n\
+	lsl r3, r0, #16\n\
+	cmp r3, #0\n\
+	beq _0817B532\n\
+	mov r1, #0x18\n\
+	ldrsh r0, [r2, r1]\n\
+	lsl r0, #16\n\
+	ldrh r1, [r2, #0x1A]\n\
+	add r1, r0, r1\n\
+	lsr r0, r3, #12\n\
+	sub r1, r0\n\
+	asr r0, r1, #16\n\
+	strh r0, [r2, #0x18]\n\
+	strh r1, [r2, #0x1A]\n\
+	ldrh r1, [r2, #0x18]\n\
+	mov r0, #0x1C\n\
+	bl SetGpuReg\n\
+	ldr r0, =gUnknown_0203BD24\n\
+	ldrh r1, [r0]\n\
+	mov r0, #0x1E\n\
+	bl SetGpuReg\n\
+_0817B532:\n\
+	pop {r4,r5}\n\
+	pop {r0}\n\
+	bx r0\n\
+	.pool");
+}
+#endif // NONMATCHING
+
+void sub_817B540(u8 mode)
+{
+    u16 x;
+    u16 y;
+    switch (mode)
+    {
+        case 0:
+        default:
+            /* stuff */
+            if (gMain.vblankCounter1 & 3 || gPaletteFade.active)
+                break;
+            if (gMain.vblankCounter1 & 4)
+            {
+                x = gPlttBufferUnfaded[9];
+                y = gPlttBufferUnfaded[10];
+            }
+            else
+            {
+                x = gPlttBufferUnfaded[10];
+                y = gPlttBufferUnfaded[9];
+            }
+            LoadPalette(&x, 9, 2);
+            LoadPalette(&y, 10, 2);
+            break;
+        case 2:
+            if (gMain.vblankCounter1 & 3 || gPaletteFade.active)
+                break;
+            if (gMain.vblankCounter1 & 4)
+            {
+                x = 0x3D27;
+                y = 0x295;
+            }
+            else
+            {
+                x = 0x31C;
+                y = 0x3D27;
+            }
+            LoadPalette(&x, 12, 2);
+            LoadPalette(&y, 13, 2);
+            break;
+        case 1:
+            break;
+    }
+}
+
+void sub_817B62C(struct Sprite *sprite)
+{
+    s32 var;
+    s16 var2 = gUnknown_0203BD28;
+    
+    if (var2 != 2)
+    {
+        switch (var2)
+        {
+        default:
+            DestroySprite(sprite);
+            break;
+        case 0:
+            var = ((sprite->pos1.x << 16) | (u16)sprite->data[2]) + (u16)sprite->data[1];
+            sprite->pos1.x = var >> 16;
+            sprite->data[2] = var;
+            if (sprite->pos1.x > 0xFF)
+                sprite->pos1.x = -0x20;
+            if (sprite->data[0])
+                sprite->pos2.y = -(gUnknown_0203BD24 + gUnknown_0203BD26);
+            else
+                sprite->pos2.y = -gUnknown_0203BD24;
+            break;
+        }
+    }
+}