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.

1 files changed, 2 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 4a63a9128..cb2c366d0 100644
--- a/Makefile
+++ b/Makefile
@@ -21,8 +21,8 @@ data/maps/map_data.o \
 data/pokemon/dex_entries.o \
 data/pokemon/egg_moves.o \
 data/pokemon/evos_attacks.o \
-engine/credits.o \
-engine/events.o \
+engine/title/credits.o \
+engine/overworld/events.o \
 gfx/pics.o \
 gfx/sprites.o \
 lib/mobile/main.o