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/pokemon/types.asm

@@ -0,0 +1,99 @@
+PrintMonTypes: ; 5090d
+; Print one or both types of [wCurSpecies]
+; on the stats screen at hl.
+
+	push hl
+	call GetBaseData
+	pop hl
+
+	push hl
+	ld a, [wBaseType1]
+	call .Print
+
+	; Single-typed monsters really
+	; have two of the same type.
+	ld a, [wBaseType1]
+	ld b, a
+	ld a, [wBaseType2]
+	cp b
+	pop hl
+	jr z, .hide_type_2
+
+	ld bc, SCREEN_WIDTH
+	add hl, bc
+
+.Print:
+	ld b, a
+	jr PrintType
+
+.hide_type_2
+	; Erase any type name that was here before.
+	; Seems to be pointless in localized versions.
+	ld a, " "
+	ld bc, SCREEN_WIDTH - 3
+	add hl, bc
+	ld [hl], a
+	inc bc
+	add hl, bc
+	ld bc, NAME_LENGTH_JAPANESE - 1
+	jp ByteFill
+; 5093a
+
+
+PrintMoveType: ; 5093a
+; Print the type of move b at hl.
+
+	push hl
+	ld a, b
+	dec a
+	ld bc, MOVE_LENGTH
+	ld hl, Moves
+	call AddNTimes
+	ld de, wStringBuffer1
+	ld a, BANK(Moves)
+	call FarCopyBytes
+	ld a, [wStringBuffer1 + MOVE_TYPE]
+	pop hl
+
+	ld b, a
+
+
+PrintType: ; 50953
+; Print type b at hl.
+
+	ld a, b
+
+	push hl
+	add a
+	ld hl, TypeNames
+	ld e, a
+	ld d, 0
+	add hl, de
+	ld a, [hli]
+	ld e, a
+	ld d, [hl]
+	pop hl
+
+	jp PlaceString
+; 50964
+
+
+GetTypeName: ; 50964
+; Copy the name of type [wd265] to wStringBuffer1.
+
+	ld a, [wd265]
+	ld hl, TypeNames
+	ld e, a
+	ld d, 0
+	add hl, de
+	add hl, de
+	ld a, [hli]
+	ld h, [hl]
+	ld l, a
+	ld de, wStringBuffer1
+	ld bc, MOVE_NAME_LENGTH
+	jp CopyBytes
+; 5097b
+
+
+INCLUDE "data/types/names.asm"