Organize the engine/ directory, take 3

Renamed `title` to `movies`.
Moved some functions from `engine/routines/` to their fitting
directories, and cleaned up the base `engine/` directory.
Moved `engine/pokemon/tmhm.asm` back to `engine/items/`.

Made a new subdirectory:
* engine/tilesets: Contains all map-related graphics routines.

engine/movie/unused_title.asm

@@ -0,0 +1,178 @@
+UnusedTitleScreen: ; 10c000
+
+	call ClearBGPalettes
+	call ClearTileMap
+	call DisableLCD
+
+; Turn BG Map update off
+	xor a
+	ld [hBGMapMode], a
+
+; Reset timing variables
+	ld hl, wJumptableIndex
+	ld [hli], a ; wJumptableIndex
+	ld [hli], a ; wIntroSceneFrameCounter
+	ld [hli], a ; wTitleScreenTimer
+	ld [hl], a  ; wTitleScreenTimer + 1
+
+	ld hl, UnusedTitleBG_GFX
+	ld de, vTiles2
+	ld bc, vBGMap0 - vTiles2
+	call CopyBytes
+
+	ld hl, UnusedTitleBG_GFX + $80 tiles
+	ld de, vTiles1
+	ld bc, vTiles2 - vTiles1
+	call CopyBytes
+
+	ld hl, UnusedTitleFG_GFX
+	ld de, vTiles0
+	ld bc, vTiles1 - vTiles0
+	call CopyBytes
+
+	ld hl, UnusedTitleBG_Tilemap
+	debgcoord 0, 0
+	ld bc, BG_MAP_WIDTH * BG_MAP_HEIGHT
+.copy
+	ld a, 0
+	ld [rVBK], a
+	ld a, [hli]
+	ld [de], a
+	ld a, 1
+	ld [rVBK], a
+	ld a, [hli]
+	ld [de], a
+	inc de
+	dec bc
+	ld a, b
+	or c
+	jr nz, .copy
+
+	ld hl, UnusedTitleFG_OAM
+	ld de, wVirtualOAMSprite00
+	ld bc, SPRITEOAMSTRUCT_LENGTH * NUM_SPRITE_OAM_STRUCTS
+	call CopyBytes
+
+	call EnableLCD
+	ld a, [rLCDC]
+	set rLCDC_SPRITES_ENABLE, a
+	set rLCDC_SPRITE_SIZE, a
+	ld [rLCDC], a
+
+	call DelayFrame
+
+	ld a, [rSVBK]
+	push af
+	ld a, BANK(wBGPals1)
+	ld [rSVBK], a
+
+	ld hl, UnusedTitleBG_Palettes
+	ld de, wBGPals1
+	ld bc, 8 palettes
+	call CopyBytes
+
+	ld hl, UnusedTitleFG_Palettes
+	ld de, wOBPals1
+	ld bc, 8 palettes
+	call CopyBytes
+
+	ld hl, UnusedTitleBG_Palettes
+	ld de, wBGPals2
+	ld bc, 8 palettes
+	call CopyBytes
+
+	ld hl, UnusedTitleFG_Palettes
+	ld de, wOBPals2
+	ld bc, 8 palettes
+	call CopyBytes
+
+	pop af
+	ld [rSVBK], a
+
+	ld a, $1
+	ld [hCGBPalUpdate], a
+
+	ld de, MUSIC_TITLE
+	call PlayMusic
+
+	ret
+; 10c0b1
+
+UnusedTitleBG_GFX: ; 10c0b1
+INCBIN "gfx/title/old_bg.2bpp"
+; 10d0b1
+
+UnusedTitleBG_Tilemap: ; 10d0b1
+; 32x32 (alternating tiles and attributes)
+INCBIN "gfx/title/old_bg.tilemap"
+; 10d8b1
+
+UnusedTitleBG_Palettes: ; 10d8b1
+INCLUDE "gfx/title/old_bg.pal"
+; 10dab1
+
+UnusedTitleFG_GFX: ; 10dab1
+INCBIN "gfx/title/old_fg.2bpp"
+; 10eab1
+
+UnusedTitleFG_Palettes: ; 10eab1
+INCLUDE "gfx/title/old_fg.pal"
+; 10ecb1
+
+UnusedTitleFG_OAM: ; 10ecb1
+	dsprite  3,  0,  7,  0, $00, 1
+	dsprite  3,  0,  8,  0, $02, 1
+	dsprite  3,  0,  9,  0, $04, 1
+	dsprite  3,  0, 10,  0, $06, 1
+	dsprite  3,  0, 11,  0, $08, 1
+	dsprite  3,  0, 12,  0, $0a, 1
+	dsprite  3,  0, 13,  0, $0c, 1
+	dsprite  3,  0, 14,  0, $0e, 1
+	dsprite  5,  0,  7,  0, $10, 0
+	dsprite  5,  0,  8,  0, $12, 0
+	dsprite  5,  0,  9,  0, $14, 0
+	dsprite  5,  0, 10,  0, $16, 0
+	dsprite  5,  0, 11,  0, $18, 0
+	dsprite  5,  0, 12,  0, $1a, 0
+	dsprite  5,  0, 13,  0, $1c, 0
+	dsprite  5,  0, 14,  0, $1e, 0
+	dsprite  7,  0,  7,  0, $20, 0
+	dsprite  7,  0,  8,  0, $22, 0
+	dsprite  7,  0,  9,  0, $24, 0
+	dsprite  7,  0, 10,  0, $26, 0
+	dsprite  7,  0, 11,  0, $28, 0
+	dsprite  7,  0, 12,  0, $2a, 0
+	dsprite  7,  0, 13,  0, $2c, 0
+	dsprite  7,  0, 14,  0, $2e, 0
+	dsprite  9,  0,  7,  0, $30, 2
+	dsprite  9,  0,  8,  0, $32, 2
+	dsprite  9,  0,  9,  0, $34, 2
+	dsprite  9,  0, 10,  0, $36, 2
+	dsprite  9,  0, 11,  0, $38, 2
+	dsprite  9,  0, 12,  0, $3a, 2
+	dsprite  9,  0, 13,  0, $3c, 2
+	dsprite  9,  0, 14,  0, $3e, 2
+	dsprite 11,  0,  7,  0, $40, 1
+	dsprite 11,  0,  8,  0, $42, 1
+	dsprite 11,  0,  9,  0, $44, 1
+	dsprite 11,  0, 10,  0, $46, 1
+	dsprite 11,  0, 11,  0, $48, 1
+	dsprite 11,  0, 12,  0, $4a, 1
+	dsprite 11,  0, 13,  0, $4c, 1
+	dsprite 11,  0, 14,  0, $4e, 1
+; 10ed51
+
+Function10ed51: ; 10ed51
+	call _TitleScreen
+.loop
+	call JoyTextDelay
+	ld a, [hJoyLast]
+	ld b, a
+	and 1
+	jr nz, .done
+	call SuicuneFrameIterator
+	call DelayFrame
+	jr .loop
+.done
+	ret
+; 10ed67