Organize the engine/ directory, take 2

Renamed `game` to `games` and `menu` to `menus`.
Moved some functions from `engine/routines/` to their fitting subdirectories.

Made two new subdirectories:
* engine/rtc: Contains all RTC-related things. Menus, hardware, misc
functions.
* engine/items: Contains all item-related things. Pack, item effects,
other item handlers.

engine/gfx/drawkrispackgfx.asm

@@ -0,0 +1,20 @@
+DrawKrisPackGFX: ; 48e81
+	ld hl, PackFGFXPointers
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld e, a
+	ld d, [hl]
+	ld hl, vTiles2 tile $50
+	lb bc, BANK(PackFGFX), 15
+	call Request2bpp
+	ret
+
+PackFGFXPointers: ; 48e93
+	dw PackFGFX + (15 tiles) * 1 ; ITEM_POCKET
+	dw PackFGFX + (15 tiles) * 3 ; BALL_POCKET
+	dw PackFGFX + (15 tiles) * 0 ; KEY_ITEM_POCKET
+	dw PackFGFX + (15 tiles) * 2 ; TM_HM_POCKET
+
+PackFGFX: ; 48e9b
+INCBIN "gfx/pack/pack_f.2bpp"

engine/gfx/loadoverworldfont.asm

@@ -0,0 +1,17 @@
+LoadOverworldFont:: ; 106594
+	ld de, .OverworldFontGFX
+	ld hl, vTiles1
+	lb bc, BANK(.OverworldFontGFX), $80
+	call Get2bpp
+	ld de, .OverworldFontSpaceGFX
+	ld hl, vTiles2 tile " "
+	lb bc, BANK(.OverworldFontSpaceGFX), 1
+	call Get2bpp
+	ret
+; 1065ad
+
+.OverworldFontGFX:
+INCBIN "gfx/font/overworld.2bpp"
+
+.OverworldFontSpaceGFX:
+INCBIN "gfx/font/overworld_space.2bpp"

engine/gfx/placegraphic.asm

@@ -0,0 +1,55 @@
+PlaceGraphic: ; 2ef6e
+; Fill wBoxAlignment-aligned box width b height c
+; with iterating tile starting from hGraphicStartTile at hl.
+
+	ld de, SCREEN_WIDTH
+
+	ld a, [wBoxAlignment]
+	and a
+	jr nz, .right
+
+	ld a, [hGraphicStartTile]
+.x1
+	push bc
+	push hl
+
+.y1
+	ld [hl], a
+	add hl, de
+	inc a
+	dec c
+	jr nz, .y1
+
+	pop hl
+	inc hl
+	pop bc
+	dec b
+	jr nz, .x1
+	ret
+
+.right
+; Right-aligned.
+	push bc
+	ld b, 0
+	dec c
+	add hl, bc
+	pop bc
+
+	ld a, [hGraphicStartTile]
+.x2
+	push bc
+	push hl
+
+.y2
+	ld [hl], a
+	add hl, de
+	inc a
+	dec c
+	jr nz, .y2
+
+	pop hl
+	dec hl
+	pop bc
+	dec b
+	jr nz, .x2
+	ret

engine/gfx/trademonfrontpic.asm

@@ -0,0 +1,38 @@
+GetTrademonFrontpic: ; 4d7fd
+	ld a, [wOTTrademonSpecies]
+	ld hl, wOTTrademonDVs
+	ld de, vTiles2
+	push de
+	push af
+	predef GetUnownLetter
+	pop af
+	ld [wCurPartySpecies], a
+	ld [wCurSpecies], a
+	call GetBaseData
+	pop de
+	predef GetAnimatedFrontpic
+	ret
+
+AnimateTrademonFrontpic: ; 4d81e
+	ld a, [wOTTrademonSpecies]
+	call IsAPokemon
+	ret c
+	farcall ShowOTTrademonStats
+	ld a, [wOTTrademonSpecies]
+	ld [wCurPartySpecies], a
+	ld a, [wOTTrademonDVs]
+	ld [wTempMonDVs], a
+	ld a, [wOTTrademonDVs + 1]
+	ld [wTempMonDVs + 1], a
+	ld b, SCGB_PLAYER_OR_MON_FRONTPIC_PALS
+	call GetSGBLayout
+	ld a, %11100100 ; 3,2,1,0
+	call DmgToCgbBGPals
+	farcall TradeAnim_ShowGetmonFrontpic
+	ld a, [wOTTrademonSpecies]
+	ld [wCurPartySpecies], a
+	hlcoord 7, 2
+	ld d, $0
+	ld e, ANIM_MON_TRADE
+	predef AnimateFrontpic
+	ret