finish decompiling item_use.c (#244)

* nonmatching sub_80C9720 and decompile sub_80C9838

* finish decompiling Itemfinder functions.

* decompile ItemUseOutOfBattle_PokeblockCase and ItemUseOutOfBattle_CoinCase

* rename field_doortransition

* rename weather file

* decompile more of item_use.c

* decompile up to repel code

* decompile up to stat increase code

* finish decompiling item_use.c

* remove item_use from ld_script

1 files changed, 437 insertions, 0 deletions

diff --git a/data/field_screeneffect.s b/data/field_screeneffect.s
new file mode 100644
index 000000000..44ef8a8da
--- /dev/null
+++ b/data/field_screeneffect.s
@@ -0,0 +1,437 @@
+	.include "asm/macros.inc"
+	.include "constants/constants.inc"
+
+	.section .rodata
+
+	.align 2
+DroughtPaletteData_0: @ 8393FE8
+	.incbin "graphics/weather/drought0.bin.lz"
+
+	.align 2
+DroughtPaletteData_1: @ 839480C
+	.incbin "graphics/weather/drought1.bin.lz"
+
+	.align 2
+DroughtPaletteData_2: @ 8395004
+	.incbin "graphics/weather/drought2.bin.lz"
+
+	.align 2
+DroughtPaletteData_3: @ 83957A0
+	.incbin "graphics/weather/drought3.bin.lz"
+
+	.align 2
+DroughtPaletteData_4: @ 8395FBC
+	.incbin "graphics/weather/drought4.bin.lz"
+
+	.align 2
+DroughtPaletteData_5: @ 8396784
+	.incbin "graphics/weather/drought5.bin.lz"
+
+	.align 2
+gUnknown_08396FA8:: @ 8396FA8
+	.4byte DroughtPaletteData_0
+	.4byte DroughtPaletteData_1
+	.4byte DroughtPaletteData_2
+	.4byte DroughtPaletteData_3
+	.4byte DroughtPaletteData_4
+	.4byte DroughtPaletteData_5
+	@.4byte unk_20000000
+	.incbin "baserom.gba", 0x00396fc0, 0x4 @ pointer to unk_2000000?
+
+	.align 2
+gUnknown_08396FC4:: @ 8396FC4
+	.4byte gUnknown_0202F7E8
+
+	.align 2
+gUnknown_08396FC8:: @ 8396FC8
+	.4byte sub_807CAE8, nullsub_38, sub_807CAE8, sub_807CB0C
+	.4byte sub_807DE78, sub_807DEF4, sub_807DEC4, sub_807DF54
+	.4byte sub_807DF9C, nullsub_55, sub_807DFC0, sub_807DFD0
+	.4byte sub_807E364, sub_807E400, sub_807E3D0, sub_807E460
+	.4byte sub_807E9C8, snowflakes_progress2, sub_807EA18, sub_807EAC0
+	.4byte sub_807EE80, sub_807EFC0, sub_807EEF4, sub_807F34C
+	.4byte sub_807F49C, sub_807F52C, sub_807F4FC, sub_807F5EC
+	.4byte sub_807F7F8, sub_807F888, sub_807F858, sub_807F934
+	.4byte sub_807FE9C, sub_807FF4C, sub_807FF1C, sub_807FFC8
+	.4byte sub_807FB24, sub_807FBD8, sub_807FBA8, sub_807FC3C
+	.4byte sub_807F49C, sub_807F52C, sub_807F4FC, sub_807F5EC
+	.4byte sub_8080430, nullsub_56, sub_8080460, sub_8080470
+	.4byte sub_807E110, sub_807E174, sub_807E144, sub_807E258
+	.4byte sub_807EF24, sub_807EFC0, sub_807EF90, sub_807F34C
+	.4byte sub_8080474, sub_80804F8, sub_80804C8, sub_808056C
+
+	.align 2
+gUnknown_083970B8:: @ 83970B8
+	.4byte sub_807CC24
+	.4byte sub_807CCAC
+	.4byte nullsub_39
+	.4byte nullsub_39
+
+gUnknown_083970C8:: @ 83970C8
+	.incbin "baserom.gba", 0x003970c8, 0x20
+
+	.align 2
+gUnknown_083970E8:: @ 83970E8
+	.incbin "graphics/weather/0.gbapal"
+
+	.align 2
+gUnknown_08397108:: @ 8397108
+	.incbin "graphics/weather/1.gbapal"
+
+	.align 2
+gUnknown_08397128:: @ 8397128
+	.incbin "graphics/weather/2.gbapal"
+
+	.align 2
+WeatherFog0Tiles: @ 8397148
+	.incbin "graphics/weather/fog0.4bpp"
+
+	.align 2
+gWeatherFog1Tiles:: @ 8397948
+	.incbin "graphics/weather/fog1.4bpp"
+
+	.align 2
+WeatherCloudTiles: @ 8398148
+	.incbin "graphics/weather/cloud.4bpp"
+
+	.align 2
+gSpriteImage_8398948:: @ 8398948
+	.incbin "graphics/weather/snow0.4bpp"
+
+	.align 2
+gSpriteImage_8398968:: @ 8398968
+	.incbin "graphics/weather/snow1.4bpp"
+
+	.align 2
+WeatherBubbleTiles: @ 8398988
+	.incbin "graphics/weather/bubble.4bpp"
+
+	.align 2
+WeatherAshTiles: @ 83989C8
+	.incbin "graphics/weather/ash.4bpp"
+
+	.align 2
+WeatherRainTiles: @ 83999C8
+	.incbin "graphics/weather/rain.4bpp"
+
+	.align 2
+WeatherSandstormTiles: @ 8399FC8
+	.incbin "graphics/weather/sandstorm.4bpp"
+
+	.align 1
+gUnknown_0839A9C8:: @ 839A9C8
+	.2byte  0, 66
+	.2byte  5, 73
+	.2byte 10, 78
+
+	.align 2
+gUnknown_0839A9D4:: @ 839A9D4
+	obj_tiles WeatherCloudTiles, 0x800, 0x1200
+
+	.align 2
+gOamData_839A9DC:: @ 839A9DC
+	.2byte 0x0400
+	.2byte 0xC000
+	.2byte 0x0C00
+
+	.align 2
+gSpriteAnim_839A9E4:: @ 839A9E4
+	obj_image_anim_frame 0, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839A9EC:: @ 839A9EC
+	.4byte gSpriteAnim_839A9E4
+
+	.align 2
+gSpriteTemplate_839A9F0:: @ 839A9F0
+	spr_template 4608, 4609, gOamData_839A9DC, gSpriteAnimTable_839A9EC, NULL, gDummySpriteAffineAnimTable, sub_807E0F4
+
+	.align 1
+gUnknown_0839AA08:: @ 839AA08
+	.2byte   0,   0
+	.2byte   0, 160
+	.2byte   0,  64
+	.2byte 144, 224
+	.2byte 144, 128
+	.2byte  32,  32
+	.2byte  32, 192
+	.2byte  32,  96
+	.2byte  72, 128
+	.2byte  72,  32
+	.2byte  72, 192
+	.2byte 216,  96
+	.2byte 216,   0
+	.2byte 104, 160
+	.2byte 104,  64
+	.2byte 104, 224
+	.2byte 144,   0
+	.2byte 144, 160
+	.2byte 144,  64
+	.2byte  32, 224
+	.2byte  32, 128
+	.2byte  72,  32
+	.2byte  72, 192
+	.2byte  48,  96
+
+	.align 2
+gOamData_839AA68:: @ 839AA68
+	.2byte 0x8000
+	.2byte 0x8000
+	.2byte 0x2400
+
+	.align 2
+gSpriteAnim_839AA70:: @ 839AA70
+	obj_image_anim_frame 0, 16
+	obj_image_anim_jump 0
+
+	.align 2
+gSpriteAnim_839AA78:: @ 839AA78
+	obj_image_anim_frame 8, 3
+	obj_image_anim_frame 32, 2
+	obj_image_anim_frame 40, 2
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AA88:: @ 839AA88
+	obj_image_anim_frame 8, 3
+	obj_image_anim_frame 16, 3
+	obj_image_anim_frame 24, 4
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839AA98:: @ 839AA98
+	.4byte gSpriteAnim_839AA70
+	.4byte gSpriteAnim_839AA78
+	.4byte gSpriteAnim_839AA88
+
+	.align 2
+gSpriteTemplate_839AAA4:: @ 839AAA4
+	spr_template 4614, 4608, gOamData_839AA68, gSpriteAnimTable_839AA98, NULL, gDummySpriteAffineAnimTable, sub_807E5C0
+
+gUnknown_0839AABC:: @ 839AABC
+	.incbin "baserom.gba", 0x0039aabc, 0x8
+
+gUnknown_0839AAC4:: @ 839AAC4
+	.incbin "baserom.gba", 0x0039aac4, 0x8
+
+	.align 2
+gUnknown_0839AACC:: @ 839AACC
+	obj_tiles WeatherRainTiles, 0x600, 0x1206
+
+	.align 2
+gOamData_839AAD4:: @ 839AAD4
+	.2byte 0x0000
+	.2byte 0x0000
+	.2byte 0x0400
+
+	.align 2
+gSpriteImageTable_839AADC:: @ 839AADC
+	obj_frame_tiles gSpriteImage_8398948, 0x20
+	obj_frame_tiles gSpriteImage_8398968, 0x20
+
+	.align 2
+gSpriteAnim_839AAEC:: @ 839AAEC
+	obj_image_anim_frame 0, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AAF4:: @ 839AAF4
+	obj_image_anim_frame 1, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839AAFC:: @ 839AAFC
+	.4byte gSpriteAnim_839AAEC
+	.4byte gSpriteAnim_839AAF4
+
+	.align 2
+gSpriteTemplate_839AB04:: @ 839AB04
+	spr_template 0xFFFF, 4608, gOamData_839AAD4, gSpriteAnimTable_839AAFC, gSpriteImageTable_839AADC, gDummySpriteAffineAnimTable, sub_807ED48
+
+	.align 2
+	.incbin "baserom.gba", 0x0039ab1c, 0x10
+
+	.align 2
+gOamData_839AB2C:: @ 839AB2C
+	.2byte 0x0400
+	.2byte 0xC000
+	.2byte 0x0800
+
+	.align 2
+gSpriteAnim_839AB34:: @ 839AB34
+	obj_image_anim_frame 0, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AB3C:: @ 839AB3C
+	obj_image_anim_frame 32, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AB44:: @ 839AB44
+	obj_image_anim_frame 64, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AB4C:: @ 839AB4C
+	obj_image_anim_frame 96, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AB54:: @ 839AB54
+	obj_image_anim_frame 128, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AB5C:: @ 839AB5C
+	obj_image_anim_frame 160, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839AB64:: @ 839AB64
+	.4byte gSpriteAnim_839AB34
+	.4byte gSpriteAnim_839AB3C
+	.4byte gSpriteAnim_839AB44
+	.4byte gSpriteAnim_839AB4C
+	.4byte gSpriteAnim_839AB54
+	.4byte gSpriteAnim_839AB5C
+
+	.align 2
+gSpriteAffineAnim_839AB7C:: @ 839AB7C
+	obj_rot_scal_anim_frame 0x200, 0x200, 0, 0
+	obj_rot_scal_anim_end
+
+	.align 2
+gSpriteAffineAnimTable_839AB8C:: @ 839AB8C
+	.4byte gSpriteAffineAnim_839AB7C
+
+	.align 2
+gSpriteTemplate_839AB90:: @ 839AB90
+	spr_template 4609, 4608, gOamData_839AB2C, gSpriteAnimTable_839AB64, NULL, gSpriteAffineAnimTable_839AB8C, sub_807F688
+
+	.align 2
+gUnknown_0839ABA8:: @ 839ABA8
+	obj_tiles gWeatherFog1Tiles, 0x800, 0x1201
+
+	.align 2
+gUnknown_0839ABB0:: @ 839ABB0
+	obj_tiles WeatherAshTiles, 0x1000, 0x1202
+
+	.align 2
+gOamData_839ABB8:: @ 839ABB8
+	.2byte 0x0400
+	.2byte 0xC000
+	.2byte 0xF400
+
+	.align 2
+gSpriteAnim_839ABC0:: @ 839ABC0
+	obj_image_anim_frame 0, 60
+	obj_image_anim_frame 64, 60
+	obj_image_anim_jump 0
+
+	.align 2
+gSpriteAnimTable_839ABCC:: @ 839ABCC
+	.4byte gSpriteAnim_839ABC0
+
+	.align 2
+gSpriteTemplate_839ABD0:: @ 839ABD0
+	spr_template 4610, 4608, gOamData_839ABB8, gSpriteAnimTable_839ABCC, NULL, gDummySpriteAffineAnimTable, sub_807FAA8
+
+	.align 2
+gUnknown_0839ABE8:: @ 839ABE8
+	obj_tiles WeatherFog0Tiles, 0x800, 0x1203
+
+	.align 2
+gOamData_839ABF0:: @ 839ABF0
+	.2byte 0x0400
+	.2byte 0xC000
+	.2byte 0x0800
+
+	.align 2
+gSpriteAnim_839ABF8:: @ 839ABF8
+	obj_image_anim_frame 0, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839AC00:: @ 839AC00
+	.4byte gSpriteAnim_839ABF8
+
+	.align 2
+gSpriteTemplate_839AC04:: @ 839AC04
+	spr_template 4611, 4608, gOamData_839ABF0, gSpriteAnimTable_839AC00, NULL, gDummySpriteAffineAnimTable, sub_807FE3C
+
+	.align 2
+gOamData_839AC1C:: @ 839AC1C
+	.2byte 0x0400
+	.2byte 0xC000
+	.2byte 0x0400
+
+	.align 2
+gSpriteAnim_839AC24:: @ 839AC24
+	obj_image_anim_frame 0, 3
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnim_839AC2C:: @ 839AC2C
+	obj_image_anim_frame 64, 3
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839AC34:: @ 839AC34
+	.4byte gSpriteAnim_839AC24
+	.4byte gSpriteAnim_839AC2C
+
+	.align 2
+gSpriteTemplate_839AC3C:: @ 839AC3C
+	spr_template 4612, 4609, gOamData_839AC1C, gSpriteAnimTable_839AC34, NULL, gDummySpriteAffineAnimTable, sub_8080338
+
+	.align 2
+gUnknown_0839AC54:: @ 839AC54
+	obj_tiles WeatherSandstormTiles, 0xA00, 0x1204
+
+gUnknown_0839AC5C:: @ 839AC5C
+	.incbin "baserom.gba", 0x0039ac5c, 0xc
+
+gUnknown_0839AC68:: @ 839AC68
+	.incbin "baserom.gba", 0x0039ac68, 0x8
+
+	.align 2
+gUnknown_0839AC70:: @ 839AC70
+	obj_tiles WeatherBubbleTiles, 0x40, 0x1205
+
+	.align 1
+gUnknown_0839AC78:: @ 839AC78
+	.2byte 120, 160
+	.2byte 376, 160
+	.2byte  40, 140
+	.2byte 296, 140
+	.2byte 180, 130
+	.2byte 436, 130
+	.2byte  60, 160
+	.2byte 436, 160
+	.2byte 220, 180
+	.2byte 476, 180
+	.2byte  10,  90
+	.2byte 266,  90
+	.2byte 256, 160
+
+	.align 2
+gSpriteAnim_839ACAC:: @ 839ACAC
+	obj_image_anim_frame 0, 16
+	obj_image_anim_frame 1, 16
+	obj_image_anim_end
+
+	.align 2
+gSpriteAnimTable_839ACB8:: @ 839ACB8
+	.4byte gSpriteAnim_839ACAC
+
+	.align 2
+gSpriteTemplate_839ACBC:: @ 839ACBC
+	spr_template 4613, 4608, gOamData_837DF24, gSpriteAnimTable_839ACB8, NULL, gDummySpriteAffineAnimTable, unc_0807DAB4
+
+gUnknown_0839ACD4:: @ 839ACD4
+	.byte 2, 3, 5, 3
+
+gUnknown_0839ACD8:: @ 839ACD8
+	.byte 2, 2, 3, 2