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tetris.fs
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tetris.fs
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\ tetris-like game
17 ficl-vocabulary tetris-voc
also tetris-voc definitions
0 DEFINE-SFX connect.wav
1 DEFINE-SFX zap.wav
CREATE shapes
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 0 C,
1 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 1 C, 0 C,
1 C, 1 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 0 C,
0 C, 0 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 1 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 1 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
1 C, 1 C, 1 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
1 C, 1 C, 0 C, 0 C,
0 C, 1 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 1 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 1 C, 1 C, 1 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
0 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
1 C, 0 C, 0 C, 0 C,
: shape@ ( x y rot# piece# -- ) >R >R 4 * + R> 16 * + R> 64 * + shapes + C@ ;
: fits? ( rot# piece# x y -- f )
{ r p x y }
4 0 ?DO
4 0 ?DO
11 x + I + y J + m@ 0<> I J r p shape@ 0<> AND IF FALSE EXIT THEN
LOOP
LOOP
TRUE
;
VARIABLE piece-x
VARIABLE piece-y
VARIABLE piece-rot
VARIABLE piece-type
VARIABLE next-piece
: move-left ( -- )
piece-x @ 1- 0 MAX
DUP piece-y @ piece-rot @ piece-type @ 2SWAP fits? IF piece-x ! ELSE DROP THEN
;
: move-right ( -- )
piece-x @ 1+ 9 MIN
DUP piece-y @ piece-rot @ piece-type @ 2SWAP fits? IF piece-x ! ELSE DROP THEN
;
: rotate-left ( -- )
piece-rot @ 4 + 1- 4 MOD DUP
piece-type @ piece-x @ piece-y @ fits? IF piece-rot ! ELSE DROP THEN
;
: rotate-right ( -- )
piece-rot @ 4 + 1+ 4 MOD DUP
piece-type @ piece-x @ piece-y @ fits? IF piece-rot ! ELSE DROP THEN
;
: advance ( -- ) 1 piece-y +! ;
: new-piece ( -- )
next-piece @ piece-type !
7 RND next-piece !
-4 piece-y !
5 piece-x !
0 piece-rot !
;
: clear-field ( -- ) 20 0 DO MRAM W I * + 11 + 10 ERASE LOOP ;
VARIABLE tick
: +tick ( -- ) tick @ 1+ 20 MOD tick ! ;
: ?move ( -- )
SCANCODE_W just-pressed? IF rotate-left THEN
SCANCODE_E just-pressed? IF rotate-right THEN
SCANCODE_A just-pressed? IF move-left THEN
SCANCODE_D just-pressed? IF move-right THEN
SCANCODE_S pressed? IF 0 tick ! THEN
;
: full-line? ( y -- f )
{ y }
TRUE 10 0 DO I 11 + y m@ 0<> AND LOOP
;
: clear-lines ( -- )
20 0 DO
I full-line? IF
0 I 1- DO
MRAM W I * + 11 + MRAM W I 1+ * + 11 + 10 MOVE
-1 +LOOP
THEN
LOOP
1 sfx
;
: persist-piece ( -- )
4 0 ?DO
4 0 ?DO
I J piece-rot @ piece-type @ shape@ IF
piece-type @ 16 + 11 piece-x @ + I + piece-y @ J + m!
THEN
LOOP
LOOP
0 sfx
;
: ?advance ( -- )
tick @ 0= IF
piece-rot @ piece-type @ piece-x @ piece-y @ 1+ fits? IF
advance
ELSE
persist-piece
clear-lines
new-piece
THEN
THEN
;
: ?exit ( -- ) SCANCODE_Q pressed? IF retro-40 THEN ;
: <update> ( -- )
+tick
?move
?advance
?exit
;
: draw-next-piece ( -- )
4 0 DO
4 0 DO
I J 0 next-piece @ shape@ IF
6 I + 8 * 10 J + 8 * 16 next-piece @ + spr
THEN
LOOP
LOOP
;
: draw-piece ( -- )
4 0 DO
4 0 DO
I J piece-rot @ piece-type @ shape@ IF
11 piece-x @ + I + 8 * piece-y @ J + 8 * 16 piece-type @ + spr
THEN
LOOP
LOOP
;
: <draw> ( -- )
0 cls
0 0 map
draw-next-piece
draw-piece
;
: <init> ( -- )
0 tick !
new-piece
next-piece
s" tetris.spr" load-sprites
s" tetris.map" load-map
;
\ install the software
PREVIOUS DEFINITIONS
ALSO tetris-voc
INSTALL tetris
PREVIOUS