Organize the engine/ directory

This is an informed attempt at reorganizing the engine/ directory by
creating categorized subdirectories, in order to make it easier to
navigate and find things.

The directories created are as follows:
* engine/game: Contains all "minigames", things like the unown puzzle
and slot machine.
* engine/gfx: Contains all handling of graphics. From loading palettes
to playing animations.
* engine/link: Contains all multiplayer functionality.
* engine/menu: Contains all generic/misc. menus and menu code.
Other, more specialized menus are in their own subdirectories (pokedex,
pokegear, party menu, etc).
* engine/overworld: Contains all handling of the overworld. From loading
and connecting maps to wild encounters and the scripting engine.
* engine/pokegear: In the same vein as engine/pokedex, except it could
use some more splitting up.
* engine/pokemon: Contains everything related to manipulating pokemon
data. From the pokemon storage system to evolution and mail.
* engine/printer: Contains everything related to printing things as well
as the printer communication.
* engine/title: Contains intro sequences, title screens and credits.

engine/printer/print_party.asm

@@ -0,0 +1,364 @@
+PRINTPARTY_HP EQUS "\"◀\"" ; $71
+
+PrintPage1: ; 1dc1b0
+	hlcoord 0, 0
+	decoord 0, 0, wPrinterTileMapBuffer
+	ld bc, 17 * SCREEN_WIDTH
+	call CopyBytes
+	hlcoord 17, 1, wPrinterTileMapBuffer
+	ld a, $62
+	ld [hli], a
+	inc a
+	ld [hl], a
+	hlcoord 17, 2, wPrinterTileMapBuffer
+	ld a, $64
+	ld [hli], a
+	inc a
+	ld [hl], a
+	hlcoord 1, 9, wPrinterTileMapBuffer
+	ld a, " "
+	ld [hli], a
+	ld [hl], a
+	hlcoord 1, 10, wPrinterTileMapBuffer
+	ld a, $61
+	ld [hli], a
+	ld [hl], a
+	hlcoord 2, 11, wPrinterTileMapBuffer
+	lb bc, 5, 18
+	call ClearBox
+	ld a, [wd265]
+	dec a
+	call CheckCaughtMon
+	push af
+	ld a, [wd265]
+	ld b, a
+	ld c, 1 ; get page 1
+	farcall GetDexEntryPagePointer
+	pop af
+	ld a, b
+	hlcoord 1, 11, wPrinterTileMapBuffer
+	call nz, FarString
+	hlcoord 19, 0, wPrinterTileMapBuffer
+	ld [hl], $35
+	ld de, SCREEN_WIDTH
+	add hl, de
+	ld b, $f
+.column_loop
+	ld [hl], $37
+	add hl, de
+	dec b
+	jr nz, .column_loop
+	ld [hl], $3a
+	ret
+; 1dc213
+
+PrintPage2: ; 1dc213
+	hlcoord 0, 0, wPrinterTileMapBuffer
+	ld bc, 8 * SCREEN_WIDTH
+	ld a, " "
+	call ByteFill
+	hlcoord 0, 0, wPrinterTileMapBuffer
+	ld a, $36
+	ld b, 6
+	call .FillColumn
+	hlcoord 19, 0, wPrinterTileMapBuffer
+	ld a, $37
+	ld b, 6
+	call .FillColumn
+	hlcoord 0, 6, wPrinterTileMapBuffer
+	ld [hl], $38
+	inc hl
+	ld a, $39
+	ld bc, SCREEN_HEIGHT
+	call ByteFill
+	ld [hl], $3a
+	hlcoord 0, 7, wPrinterTileMapBuffer
+	ld bc, SCREEN_WIDTH
+	ld a, $32
+	call ByteFill
+	ld a, [wd265]
+	dec a
+	call CheckCaughtMon
+	push af
+	ld a, [wd265]
+	ld b, a
+	ld c, 2 ; get page 2
+	farcall GetDexEntryPagePointer
+	pop af
+	hlcoord 1, 1, wPrinterTileMapBuffer
+	ld a, b
+	call nz, FarString
+	ret
+; 1dc26a
+
+.FillColumn: ; 1dc26a
+	push de
+	ld de, SCREEN_WIDTH
+.column_loop
+	ld [hl], a
+	add hl, de
+	dec b
+	jr nz, .column_loop
+	pop de
+	ret
+; 1dc275
+
+GBPrinterStrings:
+GBPrinterString_Null: db "@"
+GBPrinterString_CheckingLink: next " CHECKING LINK...@"
+GBPrinterString_Transmitting: next "  TRANSMITTING...@"
+GBPrinterString_Printing: next "    PRINTING...@"
+GBPrinterString_PrinterError1:
+	db   " Printer Error 1"
+	next ""
+	next "Check the Game Boy"
+	next "Printer Manual."
+	db   "@"
+GBPrinterString_PrinterError2:
+	db   " Printer Error 2"
+	next ""
+	next "Check the Game Boy"
+	next "Printer Manual."
+	db   "@"
+GBPrinterString_PrinterError3:
+	db   " Printer Error 3"
+	next ""
+	next "Check the Game Boy"
+	next "Printer Manual."
+	db   "@"
+GBPrinterString_PrinterError4:
+	db   " Printer Error 4"
+	next ""
+	next "Check the Game Boy"
+	next "Printer Manual."
+	db   "@"
+; 1dc381
+
+PrintPartyMonPage1: ; 1dc381
+	call ClearBGPalettes
+	call ClearTileMap
+	call ClearSprites
+	xor a
+	ld [hBGMapMode], a
+	call LoadFontsBattleExtra
+
+	ld de, GBPrinterHPIcon
+	ld hl, vTiles2 tile PRINTPARTY_HP
+	lb bc, BANK(GBPrinterHPIcon), 1
+	call Request1bpp
+
+	ld de, GBPrinterLvIcon
+	ld hl, vTiles2 tile "<LV>"
+	lb bc, BANK(GBPrinterLvIcon), 1
+	call Request1bpp
+
+	ld de, StatsScreenPageTilesGFX + 14 tiles ; shiny icon
+	ld hl, vTiles2 tile "⁂"
+	lb bc, BANK(StatsScreenPageTilesGFX), 1
+	call Get2bpp
+
+	xor a
+	ld [wMonType], a
+	farcall CopyMonToTempMon
+	hlcoord 0, 7
+	ld b, 9
+	ld c, 18
+	call TextBox
+	hlcoord 8, 2
+	ld a, [wTempMonLevel]
+	call PrintLevel_Force3Digits
+	hlcoord 12, 2
+	ld [hl], PRINTPARTY_HP
+	inc hl
+	ld de, wTempMonMaxHP
+	lb bc, 2, 3
+	call PrintNum
+	ld a, [wCurPartySpecies]
+	ld [wd265], a
+	ld [wCurSpecies], a
+	ld hl, wPartyMonNicknames
+	call Function1dc50e
+	hlcoord 8, 4
+	call PlaceString
+	hlcoord 9, 6
+	ld [hl], "/"
+	call GetPokemonName
+	hlcoord 10, 6
+	call PlaceString
+	hlcoord 8, 0
+	ld [hl], "№"
+	inc hl
+	ld [hl], "."
+	inc hl
+	ld de, wd265
+	lb bc, PRINTNUM_LEADINGZEROS | 1, 3
+	call PrintNum
+	hlcoord 1, 9
+	ld de, String1dc550
+	call PlaceString
+	ld hl, wPartyMonOT
+	call Function1dc50e
+	hlcoord 4, 9
+	call PlaceString
+	hlcoord 1, 11
+	ld de, String1dc559
+	call PlaceString
+	hlcoord 4, 11
+	ld de, wTempMonID
+	lb bc, PRINTNUM_LEADINGZEROS | 2, 5
+	call PrintNum
+	hlcoord 1, 14
+	ld de, String1dc554
+	call PlaceString
+	hlcoord 7, 14
+	ld a, [wTempMonMoves + 0]
+	call Function1dc51a
+	call Function1dc52c
+	ld hl, wTempMonDVs
+	predef GetUnownLetter
+	ld hl, wBoxAlignment
+	xor a
+	ld [hl], a
+	ld a, [wCurPartySpecies]
+	cp UNOWN
+	jr z, .asm_1dc469
+	inc [hl]
+
+.asm_1dc469
+	hlcoord 0, 0
+	call _PrepMonFrontpic
+	call WaitBGMap
+	ld b, SCGB_STATS_SCREEN_HP_PALS
+	call GetSGBLayout
+	call SetPalettes
+	ret
+; 1dc47b
+
+PrintPartyMonPage2: ; 1dc47b
+	call ClearBGPalettes
+	call ClearTileMap
+	call ClearSprites
+	xor a
+	ld [hBGMapMode], a
+	call LoadFontsBattleExtra
+	xor a
+	ld [wMonType], a
+	farcall CopyMonToTempMon
+	hlcoord 0, 0
+	ld b, 15
+	ld c, 18
+	call TextBox
+	ld bc, SCREEN_WIDTH
+	decoord 0, 0
+	hlcoord 0, 1
+	call CopyBytes
+	hlcoord 7, 0
+	ld a, [wTempMonMoves + 1]
+	call Function1dc51a
+	hlcoord 7, 2
+	ld a, [wTempMonMoves + 2]
+	call Function1dc51a
+	hlcoord 7, 4
+	ld a, [wTempMonMoves + 3]
+	call Function1dc51a
+	hlcoord 7, 7
+	ld de, String1dc55d
+	call PlaceString
+	hlcoord 16, 7
+	ld de, wTempMonAttack
+	call .PrintTempMonStats
+	hlcoord 16, 9
+	ld de, wTempMonDefense
+	call .PrintTempMonStats
+	hlcoord 16, 11
+	ld de, wTempMonSpclAtk
+	call .PrintTempMonStats
+	hlcoord 16, 13
+	ld de, wTempMonSpclDef
+	call .PrintTempMonStats
+	hlcoord 16, 15
+	ld de, wTempMonSpeed
+	call .PrintTempMonStats
+	call WaitBGMap
+	ld b, SCGB_STATS_SCREEN_HP_PALS
+	call GetSGBLayout
+	call SetPalettes
+	ret
+; 1dc507
+
+.PrintTempMonStats: ; 1dc507
+	lb bc, 2, 3
+	call PrintNum
+	ret
+; 1dc50e
+
+Function1dc50e: ; 1dc50e
+	ld bc, NAME_LENGTH
+	ld a, [wCurPartyMon]
+	call AddNTimes
+	ld e, l
+	ld d, h
+	ret
+; 1dc51a
+
+Function1dc51a: ; 1dc51a
+	and a
+	jr z, .no_move
+
+	ld [wd265], a
+	call GetMoveName
+	jr .got_string
+
+.no_move
+	ld de, String1dc584
+
+.got_string
+	call PlaceString
+	ret
+; 1dc52c
+
+Function1dc52c: ; 1dc52c
+	farcall GetGender
+	ld a, " "
+	jr c, .got_gender
+	ld a, "♂"
+	jr nz, .got_gender
+	ld a, "♀"
+
+.got_gender
+	hlcoord 17, 2
+	ld [hl], a
+	ld bc, wTempMonDVs
+	farcall CheckShininess
+	ret nc
+	hlcoord 18, 2
+	ld [hl], "⁂"
+	ret
+; 1dc550
+
+String1dc550: ; 1dc550
+	db "OT/@"
+
+String1dc554: ; 1dc554
+	db "MOVE@"
+
+String1dc559: ; 1dc559
+	db "<ID>№.@"
+
+String1dc55d: ; 1dc55d
+	db   "ATTACK"
+	next "DEFENSE"
+	next "SPCL.ATK"
+	next "SPCL.DEF"
+	next "SPEED"
+	db   "@"
+
+String1dc584: ; 1dc584
+	db "------------@"
+; 1dc591
+
+GBPrinterHPIcon: ; 1dc591
+INCBIN "gfx/printer/hp.1bpp"
+
+GBPrinterLvIcon: ; 1dc599
+INCBIN "gfx/printer/lv.1bpp"