200 GOSUB 3000:GOSUB 2010
210 X=W/2-1:Y=H/2-1:FC=0:FL=-1
220 GOSUB 1010
230 KE$="":NX=X:NY=Y
250 KE$=INKEY$:IF KE$="" GOTO 250
255 IF KE$="z" THEN END
260 IF KE$<>"i" THEN 270
261 NY=Y-1:FC=INT (FC/2)*2+1:IF NY >=0 THEN 300
262 NY=0:IF NX<>W/2-1 OR MID$(DR$,1,1)=" " THEN 300
263 GOSUB 2010: NX=W/2-1:NY=H-2:GOTO 320
270 IF KE$<>"j" THEN 280
271 NX=X-1:FC=FC-INT(FC/2)*2+2:IF NX >=0 THEN 300
272 NX=0:IF NY<>H/2-1 OR MID$(DR$,3,1)=" " THEN 300
273 GOSUB 2010:NX=W-2:NY=H/2-1:GOTO 320
280 IF KE$<>"k" THEN 290
281 NX=X+1:FC=FC-INT(FC/2)*2:IF NX<=W-2 THEN 300
282 NX=W-2:IF NY<>H/2-1 OR MID$(DR$,4,1)=" " THEN 300
283 GOSUB 2010:NX=0:NY=H/2-1:GOTO 320
290 IF KE$<>"m" THEN 300
291 NY=Y+1:FC=INT (FC/2)*2:IF NY<=H-2 THEN 300
292 NY=H-2:IF NX<>W/2-1 OR MID$(DR$,2,1)=" " THEN 300
293 GOSUB 2010:NX=W/2-1:NY=0:GOTO 320
300 IF NX=X AND NY=Y THEN 230
320 X=NX:Y=NY:GOSUB 1010
330 GOTO 230
1000 REM move character
1010 XP=X*16+8+XO*2+24:YP=Y*16+8+YO+50
1020 REMIF FL<>FC AND FL>=0 THEN SPRITE FL+1,0
1030 PUT SPRITE 1,(XP,YP)
1040 REM IF FL<>FC THEN SPRITE FC+1,1,10,0,0,0,1
1050 FL=FC:RETURN
1999 REM
2000 REM create room
2010 FOR I=1 TO 8:PUT SPRITE 1,(1,1),15,1
2015 FL=-1:COLOR 15,4,4:SCREEN 2
2020 W=INT (RND(1)*4)*2+6:H=INT (RND(1)*4)*2+6
2040 XO=(250 -W*8)/2:YO=(190-H*16)/2
2050 WC=3+INT(RND(1)*14)
2060 COLOR 15,WC
2079 REM upper line
2080 LINE (XO+8,YO)-(XO+(W-1)*8,YO+3),,BF
2089 REM bottom line
2090 LINE (XO+8,YO+H*16-4)-(XO+(W-1)*8,YO+H*16-1),,BF
2099 REM left line
2100 LINE (XO,YO+16)-(XO+1,YO+(H-1)*16),,BF
2109 REM right line
2110 LINE (XO+W*8-2,YO+16)-(XO+W*8-1,YO+(H-1)*16),,BF
2119 REM corners
2120 LINE (XO+(W-1)*8,YO)-(XO+(W-1)*8+8,YO+16):REM uppper right
2125 LINE (XO+(W-1)*8+8,YO+(H-1)*16)-(XO+(W-1)*8,YO+(H-1)*16+16):REM downright
2130 LINE (XO+8,YO)-(XO,YO+16):REM uper left
2135 LINE (XO,YO+(H-1)*16)-(XO+8,YO+(H-1)*16+16):REM left bottom
2150 DR=1+INT (RND(1)*14)
2160 DR$="":DD$=" n s w e"
2170 FOR I=1 TO 4
2180 DD=DR-INT (DR/2)*2:DR =INT(DR/2):DR$=DR$+MID$(DD$,I*2-1+DD,1)
2190 IF DD=0 THEN 2420
2200 NS=ABS(I<3):S=ABS(I=2):E=ABS(I=4)
2250 X1=(W*8/(NS+1))*(NS+E)-6*NS-2*E
2260 X2=(W*8/(NS+1))*(NS+E)+5*NS-2*E+(1-NS)
2270 Y1=(H*16/((1-NS)+1))*((1-NS)+S)-12*(1-NS)-4*S
2280 Y2=(H*16/((1-NS)+1))*((1-NS)+S)+11*(1-NS)-4*S+3*NS
2290 LINE (XO+X1,YO+Y1)-(XO+X2,YO+Y2),8,BF:REM emtpy space door
2300 COLOR 1
2310 X1=(W*8/(NS+1))*(NS+E)-8*NS-4*E
2320 X2=(W*8/(NS+1))*(NS+E)-8*NS-4*E+3*(1-NS)+NS
2330 Y1=(H*16/(1-NS+1))*(1-NS+S)-16*(1-NS)-8*S
2340 Y2=(H*16/(1-NS+1))*(1-NS+S)-16*(1-NS)-8*S+7*NS+3*(1-NS)
2350 LINE (XO+X1,YO+Y1)-(XO+X2,YO+Y2),,BF
2360 X1=(W*8/(NS+1))*(NS+E)+6*NS-4*E
2370 X2=(W*8/(NS+1))*(NS+E)+6*NS-4*E+3*(1-NS)+NS
2380 Y1=(H*16/(1-NS+1))*(1-NS+S)+12*(1-NS)-8*S
2390 Y2=(H*16/(1-NS+1))*(1-NS+S)+12*(1-NS)-8*S+7*NS+3*(1-NS)
2400 LINE (XO+X1,YO+Y1)-(XO+X2,YO+Y2),,BF
2420 NEXT I
2430 RETURN
3000 REM sprites
3010 SCREEN 2
3020 FOR I=1 TO 4
3030 SP$="":FOR J=1 TO 8:READ D:SP$=SP$+CHR$(D):NEXT J
3035 PRINT SP$
3036 PRINT I
3040 SPRITE$(I)=SP$
3050 NEXT I
3100 RETURN
9010 DATA &HFF,&HFF,&HFF,&HFF
9020 DATA &HFF,&HFF,&HFF,&HFF
9030 DATA &HFF,&HFF,&HFF,&HFF
9040 DATA &HFF,&HFF,&HFF,&HFF
9050 DATA &HFF,&HFF,&HFF,&HFF
9060 DATA &HFF,&HFF,&HFF,&HFF
9070 DATA &HFF,&HFF,&HFF,&HFF
9080 DATA &HFF,&HFF,&HFF,&HFF