diff --git a/game.exe b/game.exe
index f615d95..956badc 100755
Binary files a/game.exe and b/game.exe differ
diff --git a/game.jor b/game.jor
index 546e3df..0968b20 100755
--- a/game.jor
+++ b/game.jor
@@ -13,6 +13,8 @@ REPL start-repl
 1 const ^ESC
 28 const ^ENTER
 29 const ^CTRL
+51 const ^<
+52 const ^>
 56 const ^ALT
 57 const ^SPACE
 72 const ^UP
@@ -43,6 +45,12 @@ defer draw
 2 const N
 3 const S
 
+: dir>pos ( dir -- dx dy )
+  dup W = if drop -1 0 ret then
+  dup E = if drop 1 0 ret then
+  N = if 0 -1
+      else 0 1 then ;
+
 : defsprite ( s n e w ) b, b, b, b, here 4 - const ;
 : sprindex ( sprite dir ) + b@ ;
 
@@ -50,8 +58,8 @@ defer draw
 
 defentity player
 
-100 player entity.x !
-100 player entity.y !
+128 player entity.x !
+128 player entity.y !
 
 ( timer + lerping )
 : clamp0 ( range val -- i )
@@ -59,9 +67,8 @@ defentity player
   dup 0 <= if drop drop 0 else
 	      swap drop then then ;
 : >ratio ( range value -- f )
-  over swap clamp0 >fix swap >fix fix/ ;
-: <ratio ( range ratio -- v )
-  swap >fix fix* <fix ;
+  over swap clamp0 swap />ratio ;
+: <ratio ( range ratio -- v ) *<ratio ;
 : >range ( start end -- start range ) over - ;
 : <range ( start range -- start end ) over + ;
 : lerpr ( start end ratio ) r> >range r< <ratio + ;
@@ -87,39 +94,65 @@ var footer-y
 : text2 6 12 rot text ;
 : clear s"                                 " dup text1 text2 ;
 
-var footer-timer
+( hmmm, todo: explicit "mover" struct with create does> ? )
+var move-timer
+var move-speed
 
-: move-footer-to ( ytarget -- )
-  footer-y @ swap ( from to -- )
-  footer-timer now!
+: move-to ( p target speed -- )
+  move-speed ! swap dup r> @ swap ( from to -- )
+  move-timer now!
   begin
-    2dup 10 footer-timer lerp ( from to now -- )
-    dup footer-y !
+    2dup move-speed @ move-timer lerp ( from to now -- )
+    dup r< dup r> !
     over != ( from to -- )
   while
     suspend
-  repeat drop drop ;
+  repeat drop drop r< drop ;
 
-: show-footer 24 move-footer-to ;
-: hide-footer 0 move-footer-to ;
+: show-footer footer-y 24 10 move-to ;
+: hide-footer footer-y 0 10 move-to ;
 
 : say1 ( s -- ) clear text1 show-footer ^ENTER wait-key ;
 : say2 ( s1 s2 -- ) clear text2 text1 show-footer ^ENTER wait-key ;
 
-( T I C K )
+( M O U S E )
 
-: tick-player
-  0 ^LEFT key-down if 3 - W player entity.dir ! then
-  ^RIGHT key-down if 3 + E player entity.dir ! then
-  player entity.x +!
-  0 ^UP key-down if 3 - N player entity.dir ! then
-  ^DOWN key-down if 3 + S player entity.dir ! then
-  player entity.y +! ;
+var prevbutton
+: tick-debounce
+  mousebuttons prevbutton ! ;
 
+1 const MOUSEL
+: mousedown ( button -- bool ) mousebuttons & ;
+: clicked ( button -- bool )
+  dup mousedown not swap
+  prevbutton @ & and ;
+
+( M A P )
+: +pos ( x1 y1 x2 y2 -- x y )
+  rot + rot rot + swap ;
+
+var tileselect
+3 const MAXTILE
+
+: mouseworldpos mousepos scrollpos +pos ;
+: mousetile mouseworldpos 4 >> swap 4 >> swap ;
+: tile ( x y -- ptr ) mapsize drop * + map + ;
+
+: tick-mapedit
+  tileselect @
+  ^< key-pressed if 1 - then
+  ^> key-pressed if 1 + then
+  dup 0 < if drop MAXTILE then
+  dup MAXTILE > if drop 0 then
+  tileselect !
+
+  MOUSEL mousedown if tileselect @ mousetile tile b! then ;
+
+
+( J O B )
 var MODE-MOVE
 var MODE-WAIT
 
-( J O B )
 : listen-for-jobs activate blah
   begin receive
     MODE-WAIT @ ' tick redefine
@@ -131,15 +164,35 @@ var MODE-WAIT
 task const JOB
 JOB listen-for-jobs
 
-: hello-world s" Hello, world!" say1 s" How are you" s" today?" say2 ;
+( T I C K )
+
+: move-player
+  player entity.dir @ dir>pos
+  dup if swap drop player entity.y ( d v -- )
+      else drop player entity.x then
+  swap 16 * over @ + 5 move-to ;
+
+: tick-player
+  0 ^LEFT key-down if drop 1 W player entity.dir ! then
+  ^RIGHT key-down if drop 1 E player entity.dir ! then
+  ^UP key-down if drop 1 N player entity.dir ! then
+  ^DOWN key-down if drop 1 S player entity.dir ! then
+  if ' move-player JOB send then ;
+
+: hello-world
+  s" Hello, world!" say1
+  s" How are you" s" today?" say2 ;
 
 : mode-move
   tick-player
+  tick-mapedit
   ^SPACE key-pressed if
     ' hello-world JOB send
-  then ;
+  then
+  tick-debounce ;
+
 ' mode-move MODE-MOVE !
-' noop MODE-WAIT !
+' tick-debounce MODE-WAIT !
 
 : draw-player
   player entity.x @
@@ -153,8 +206,9 @@ JOB listen-for-jobs
   scroll
 
   draw-player
-  50 50 0 draw-sprite
-  600 600 2 draw-sprite
+  48 64 0 draw-sprite
+  640 640 2 draw-sprite
+  mouseworldpos 4 draw-sprite
   draw-screen
   draw-footer ;
 
diff --git a/game.prj b/game.prj
index 17f475b..9889ef2 100755
Binary files a/game.prj and b/game.prj differ
diff --git a/jorth.c b/jorth.c
index a57464b..19f81a9 100755
--- a/jorth.c
+++ b/jorth.c
@@ -96,18 +96,15 @@ BINOP(f_bitxor, u, ^)
 BINOP(f_shr, u, >>)
 BINOP(f_shl, u, <<)
 
-void f_itofix() {
-  TOP().i = TOP().i << FIX_FRACTIONAL_BITS;
-}
-void f_fixtoi() {
-  TOP().i = TOP().i >> FIX_FRACTIONAL_BITS;
-}
-void f_fixmul() {
-  ST1().i = ((long)ST1().i * (long)TOP().i) / (1 << FIX_FRACTIONAL_BITS);
+#define RATIO_FRACTIONAL_BITS 14
+
+void f_toratio() { // a/b ( a b -- r )
+  ST1().i = ((long)ST1().i * (1 << RATIO_FRACTIONAL_BITS)) / TOP().i;
   DROP(1);
 }
-void f_fixdiv() {
-  ST1().i = ((long)ST1().i * (1 << FIX_FRACTIONAL_BITS)) / TOP().i;
+
+void f_fromratio() { // a*r ( a r -- b )
+  ST1().i = ((long)ST1().i * (long)TOP().i) / (1 << RATIO_FRACTIONAL_BITS);
   DROP(1);
 }
 
@@ -813,10 +810,8 @@ void f_init() {
   CDEF("^", f_bitxor);
   CDEF("<<", f_shl);
   CDEF(">>", f_shr);
-  CDEF(">fix", f_itofix);
-  CDEF("<fix", f_fixtoi);
-  CDEF("fix*", f_fixmul);
-  CDEF("fix/", f_fixdiv);
+  CDEF("/>ratio", f_toratio);
+  CDEF("*<ratio", f_fromratio);
   CDEF("@", f_get);
   CDEF("!", f_set);
   CDEF("+!", f_addset);
diff --git a/jorth.h b/jorth.h
index 66f8edc..348b18d 100755
--- a/jorth.h
+++ b/jorth.h
@@ -3,7 +3,6 @@
 #define MEM_SIZE 16384
 #define STACK_SIZE 64
 #define RSTACK_SIZE 32
-#define FIX_FRACTIONAL_BITS 5
 
 void f_init();
 
diff --git a/sprite.tif b/sprite.tif
index 784583f..9915569 100755
Binary files a/sprite.tif and b/sprite.tif differ
diff --git a/testbed.c b/testbed.c
index d80216b..0db6ec9 100755
--- a/testbed.c
+++ b/testbed.c
@@ -74,6 +74,8 @@ void game_init() {
   FILE *f;
   TifImageMeta_t meta;
 
+  mouse_init();
+
   setEGAMode();
   atexit(vid_cleanup);
 
@@ -105,7 +107,6 @@ void game_init() {
   scroll(0, 0);
 }
 
-
 void f_seremit() {
   ser_write_byte(TOP().i);
   if (TOP().i == '\n') {
@@ -130,6 +131,11 @@ void f_scroll() { // ( x y -- )
   scroll(ST1().i, TOP().i);
   DROP(2);
 }
+
+void f_scrollpos() { // ( -- x y )
+  PUSHI(screen.scrollX);
+  PUSHI(screen.scrollY);
+}
 void f_ticks() {
   PUSHU(timer_counter);
 }
@@ -142,6 +148,24 @@ void f_text() { // ( col line s -- )
   text_draw(ST2().u + (ST1().u * PAGE_STRIDE), TOP().s);
   DROP(3);
 }
+
+void f_map() {
+  PUSHP(map);
+}
+
+void f_mapsize() { // ( -- w h )
+  PUSHI(screen.w);
+  PUSHI(screen.h);
+}
+
+void f_mousepos() { // ( -- x y )
+  PUSHI(MOUSE.x);
+  PUSHI(MOUSE.y);
+}
+void f_mousebuttons() {
+  PUSHI(MOUSE.buttons);
+}
+
 void game_f_init() {
   f_init();
   CDEF("seremit", f_seremit);
@@ -149,10 +173,15 @@ void game_f_init() {
   CDEF("key-down", f_keyIsDown);
   CDEF("draw-sprite", f_drawSprite);
   CDEF("scroll", f_scroll);
+  CDEF("scrollpos", f_scrollpos);
   CDEF("draw-screen", drawScreen);
   CDEF("split-screen", f_splitscreen);
   CDEF("ticks", f_ticks);
   CDEF("text", f_text);
+  CDEF("map", f_map);
+  CDEF("mapsize", f_mapsize);
+  CDEF("mousepos", f_mousepos);
+  CDEF("mousebuttons", f_mousebuttons);
 
   f_loadfile("game.jor");
 }
diff --git a/tiles.c b/tiles.c
index 92435aa..10a774c 100755
--- a/tiles.c
+++ b/tiles.c
@@ -35,26 +35,7 @@ void blitTile(unsigned int offsetFrom, unsigned int offsetTo) {
 #define D_BGTILE 0x81
 #define isBufIndex(d) (!((d) & 0x80))
 
-#define NUM_BUFFERS 32
-#define nextBufferIndex(i) ((i + 1) % 32)
-#define BUF_WSTRIDE 16
-#define BUF_WSIZE (BUF_WSTRIDE * 4)
-typedef struct {
-  unsigned int w;
-  unsigned int h;
-  int scrollX;
-  int scrollY;
-  unsigned int pageOffset[2];
-  unsigned char dirty[2][PAGE_TILES_COUNT];
-  unsigned int tilesOffset;
-  unsigned int *memTiles;
-  unsigned char *map;
-  unsigned int buffer[NUM_BUFFERS][BUF_WSIZE];
-  unsigned int bufferOffset[NUM_BUFFERS];
-  unsigned char currentPage;
-  unsigned char nextBuffer;
-  unsigned char firstBuffer;
-} TiledScreen_t;
+#define nextBufferIndex(i) ((i + 1) % NUM_BUFFERS)
 
 TiledScreen_t screen = { 0, 0, 0, 0, { 0x0600, 0x2B00 }, 0, 0, NULL, NULL,
   0, 0, 0, 0, 0 };
diff --git a/tiles.h b/tiles.h
index 16ce566..89d68e0 100755
--- a/tiles.h
+++ b/tiles.h
@@ -12,3 +12,26 @@ void drawScreen();
 #define PAGE_TILES_H 14
 #define PAGE_TILES_COUNT (PAGE_TILES_H * PAGE_TILES_W)
 #define PAGE_STRIDE (PAGE_TILES_W << 1)
+
+#define NUM_BUFFERS 32
+#define BUF_WSTRIDE 16
+#define BUF_WSIZE (BUF_WSTRIDE * 4)
+
+typedef struct {
+  unsigned int w;
+  unsigned int h;
+  int scrollX;
+  int scrollY;
+  unsigned int pageOffset[2];
+  unsigned char dirty[2][PAGE_TILES_COUNT];
+  unsigned int tilesOffset;
+  unsigned int *memTiles;
+  unsigned char *map;
+  unsigned int buffer[NUM_BUFFERS][BUF_WSIZE];
+  unsigned int bufferOffset[NUM_BUFFERS];
+  unsigned char currentPage;
+  unsigned char nextBuffer;
+  unsigned char firstBuffer;
+} TiledScreen_t;
+
+extern TiledScreen_t screen;
\ No newline at end of file