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.

Makefile

@@ -21,7 +21,7 @@ data/maps/map_data.o \
 data/pokemon/dex_entries.o \
 data/pokemon/egg_moves.o \
 data/pokemon/evos_attacks.o \
-engine/title/credits.o \
+engine/movie/credits.o \
 engine/overworld/events.o \
 gfx/pics.o \
 gfx/sprites.o \

engine/gfx/crystal_layouts.asm

@@ -203,7 +203,7 @@ Function49496: ; 49496
 	ret
 ; 494ac
 
-INCLUDE "engine/gfx/tileset_palettes.asm"
+INCLUDE "engine/tilesets/tileset_palettes.asm"
 
 MG_Mobile_Layout02: ; 49706
 	ld hl, .Palette_49732

engine/items/tmhm2.asm

@@ -0,0 +1,49 @@
+CanLearnTMHMMove: ; 11639
+	ld a, [wCurPartySpecies]
+	ld [wCurSpecies], a
+	call GetBaseData
+	ld hl, wBaseTMHM
+	push hl
+
+	ld a, [wPutativeTMHMMove]
+	ld b, a
+	ld c, 0
+	ld hl, TMHMMoves
+.loop
+	ld a, [hli]
+	and a
+	jr z, .end
+	cp b
+	jr z, .asm_11659
+	inc c
+	jr .loop
+
+.asm_11659
+	pop hl
+	ld b, CHECK_FLAG
+	push de
+	ld d, 0
+	predef SmallFarFlagAction
+	pop de
+	ret
+
+.end
+	pop hl
+	ld c, 0
+	ret
+; 1166a
+
+GetTMHMMove: ; 1166a
+	ld a, [wd265]
+	dec a
+	ld hl, TMHMMoves
+	ld b, 0
+	ld c, a
+	add hl, bc
+	ld a, [hl]
+	ld [wd265], a
+	ret
+; 1167a
+
+
+INCLUDE "data/moves/tmhm_moves.asm"

engine/link/link.asm

@@ -2029,7 +2029,7 @@ Unreferenced_Function28f09: ; 28f09
 	ret
 ; 28f24
 
-INCLUDE "engine/gfx/trade_animation.asm"
+INCLUDE "engine/movie/trade_animation.asm"
 
 CheckTimeCapsuleCompatibility: ; 29bfb
 ; Checks to see if your party is compatible with the Gen 1 games.