# Qbasicnews.com

## QbasicNews.Com => Challenges => Topic started by: Antoni Gual on August 03, 2007, 10:48:11 AM

 Title: Smallest Tetris Clone? Post by: Antoni Gual on August 03, 2007, 10:48:11 AM Program a tetris clone in the smallest possible source size.The only condition is it must be playable, no fancy graphics requiredASCII or graphics, QB or FB. Only built-in keywords allowed, no libraries!Some people says it can be done in 100 lines or less..  Title: Re: Smallest Tetris Clone? Post by: Deleter on August 06, 2007, 03:36:59 PM pshhhhh 100, 79 is all you need:(fb code)Code:screen 12dim myblock(-1 to 16,31) as integer, score as integer ,px as integer=7 ,py as integer=3 , gameover as integer ,myblockdata(6,2,2) as integer={{{0,1,0},{0,1,0},{0,1,0}},{{0,0,0},{0,1,0},{1,1,1}},{{1,1,0},{1,0,0},{1,0,0}},{{0,1,1},{0,0,1},{0,0,1}},{{0,0,0},{1,1,0},{0,1,1}},{{0,0,0},{0,1,1},{1,1,0}},{{0,0,0},{1,1,0},{1,1,0}}},tm as double=timer,godown as integer,newblock as integerfor tmpy as integer  = 15 to 0 step -1     for tmpx as integer =0 to 4        if tmpx<3 and tmpy < 3 then if myblockdata(2,tmpy,tmpx) then myblock(px+tmpx,py+tmpy)=-1        myblock(iif(tmpx<2,-1,iif(tmpx<4,16,tmpy)),iif(tmpx=1 or tmpx=3,tmpy+16,iif(tmpx=4,30,tmpy)))=1next tmpx,tmpydo    locate 1,1    ? "Level:"+str((int(score/2500)+1))+chr(13)+chr(10)+"Score:"+str(score)    for tmpx as integer = 0 to 30*16-1         if myblock((tmpx mod 16),int(tmpx/16))<>0 then line((tmpx mod 16)*20+160,(int(tmpx/16)-6)*20)-((tmpx mod 16)*20+20+158,(int(tmpx/16)-6)*20+20-2),7,bf else line((tmpx mod 16)*20+160,(int(tmpx/16)-6)*20)-((tmpx mod 16)*20+20+159,(int(tmpx/16)-6)*20+20-1),8,bf    next tmpx    sleep 50,1    sleep 500-(int(score/2500)+1)*50    newblock=int(rnd*5)    if timer-tm>(.5-(int(score/2500)+1)*.05) or multikey(80) then godown=-1 else godown=0    dim canrotate as integer =-1, donttouch as integer =0,canmove as integer =-1, rotdata(2,2,1) as integer=>{{{2,0},{1,0},{0,0}},{{2,1},{1,1},{0,1}},{{2,2},{1,2},{0,2}}},tmpblock(-1 to 3,2) as integer=>{{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0}},myxdir as integer=multikey(75)*2+1    if multikey(72) then        for tmpx as integer=0 to 9-1            if myblock(px+(tmpx mod 3),py+int(tmpx/3))<> 0 then                if myblock(px+(tmpx mod 3),py+int(tmpx/3))=-1 then    tmpblock((tmpx mod 3),int(tmpx/3))=myblock(px+(tmpx mod 3),py+int(tmpx/3))                if myblock(px+(tmpx mod 3),py+int(tmpx/3))=-1 then    if myblock(px+rotdata((tmpx mod 3),int(tmpx/3),0) , py+rotdata((tmpx mod 3),int(tmpx/3),1)  )<>0 then if myblock(px+rotdata((tmpx mod 3),int(tmpx/3),0),py+rotdata((tmpx mod 3),int(tmpx/3),1))=1 then canrotate=0            end if        next tmpx        if canrotate=-1 then            for tmpx as integer=0 to 9-1                if myblock(px+rotdata((tmpx mod 3),int(tmpx/3),0),py+rotdata((tmpx mod 3),int(tmpx/3),1))<> 0 then if myblock(px+rotdata((tmpx mod 3),int(tmpx/3),0),py+rotdata((tmpx mod 3),int(tmpx/3),1))=1 then donttouch=-1                if donttouch=0 then myblock(px+rotdata((tmpx mod 3),int(tmpx/3),0),py+rotdata((tmpx mod 3),int(tmpx/3),1))=tmpblock((tmpx mod 3),int(tmpx/3)) else donttouch=0                tmpblock((tmpx mod 3),int(tmpx/3))=0            next tmpx        end if    elseif (multikey(75) xor multikey(77)) and (px+multikey(75)*2+1 >-2 ) and (px + multikey(75)*2+1 < 15) then        for tmpx as integer = 0 to 9-1            if myblock(px+(tmpx mod 3),py+int(tmpx/3))<>0 then if myblock(px+(tmpx mod 3),py+int(tmpx/3))=-1 then if myblock(px+(tmpx mod 3)+myxdir,py+int(tmpx/3))<>0 then if myblock(px+(tmpx mod 3)+myxdir,py+int(tmpx/3))=1 then canmove=0            if myblock(px+(tmpx mod 3),py+int(tmpx/3))<>0 then if myblock(px+(tmpx mod 3),py+int(tmpx/3))=-1 then tmpblock((tmpx mod 3),int(tmpx/3))=myblock(px+(tmpx mod 3),py+int(tmpx/3))        next tmpx        if canmove then            px+=myxdir            for tmpx as integer = iif(myxdir=-1,0,-1) to iif(myxdir=-1,3,2)            for tmpy as integer =0 to 2                if myblock(px+tmpx,py+tmpy)<>0 then if myblock(px+tmpx,py+tmpy)=1 then donttouch=-1                if donttouch=0 then myblock(px+tmpx,py+tmpy)=tmpblock(tmpx,tmpy) else donttouch=0            next tmpx,tmpy        end if    end if    if godown=-1 then        canmove=-1        for tmpx as integer=0 to 9-1            if myblock(px+(tmpx mod 3),py+int(tmpx/3))<>0 then if myblock(px+(tmpx mod 3),py+int(tmpx/3))=-1 then if myblock(px+(tmpx mod 3),py+int(tmpx/3)+1)<>0 then if myblock(px+(tmpx mod 3),py+int(tmpx/3)+1)=1 then canmove=0        next tmpx        for tmpx as integer = 4*3-1 to 0 step -1            if canmove=0 then    if int(tmpx/3)<3 then if myblock(px+(tmpx mod 3),py+int(tmpx/3))<>0 then myblock(px+(tmpx mod 3),py+int(tmpx/3))=1            if canmove=0 then    if int(tmpx/3)<3 then if myblockdata(newblock,int(tmpx/3),(tmpx mod 3)) then myblock(7+(tmpx mod 3),int(tmpx/3)+3)=-1            if canmove<>0 then    if myblock((tmpx mod 3)+px,int(tmpx/3)+py)<>0 then if myblock((tmpx mod 3)+px,int(tmpx/3)+py)=1 then donttouch=-1            if canmove<>0 then    if myblock((tmpx mod 3)+px,int(tmpx/3)+py-1)<> 0 then if myblock((tmpx mod 3)+px,int(tmpx/3)+py-1)=1 then donttouch=-1            if canmove<>0 then    if myblock((tmpx mod 3)+px,int(tmpx/3)+py-1)<> 0 then if myblock((tmpx mod 3)+px,int(tmpx/3)+py-1)=1 then if myblock((tmpx mod 3)+px,int(tmpx/3)+py)<>0 then if myblock((tmpx mod 3)+px,int(tmpx/3)+py)=-1 then myblock((tmpx mod 3)+px,int(tmpx/3)+py)=0            if canmove<>0 then    if donttouch=0 then myblock((tmpx mod 3)+px,int(tmpx/3)+py)=myblock((tmpx mod 3)+px,int(tmpx/3)+py-1) else donttouch=0        next tmpx        if canmove=0 then py=3 else py+=1        if canmove=0 then px=7    end if    if timer-tm>(.5-(int(score/2500)+1)*.05) then tm=timer    dim exists as integer , shiftdown as integer =0    for tmpx as integer= 30*16-1 to 0 step -1        if (tmpx mod 16)=15 then exists=-1        if (myblock((tmpx mod 16),int(tmpx/16))<>0) then    if myblock((tmpx mod 16),int(tmpx/16))=-1 then exists=0 else if int(tmpx/16)=6 then gameover=-1        if (myblock((tmpx mod 16),int(tmpx/16))<>0) then    if int(tmpx/16)<30-shiftdown then if myblock((tmpx mod 16),int(tmpx/16))=1 and shiftdown>0 then myblock((tmpx mod 16),int(tmpx/16)+shiftdown)=myblock((tmpx mod 16),int(tmpx/16))        if (myblock((tmpx mod 16),int(tmpx/16))<>0) then    if int(tmpx/16)<30-shiftdown then if myblock((tmpx mod 16),int(tmpx/16))=1 and shiftdown>0 then myblock((tmpx mod 16),int(tmpx/16))=0        if (myblock((tmpx mod 16),int(tmpx/16))=0) then    exists=0        if (tmpx mod 16)=0 and exists=-1 then            for tmpx2 as integer =0 to 15                myblock(tmpx2,int(tmpx/16)+shiftdown)=0                score+=10            next            shiftdown+=1        end if    nextloop until multikey(1) or gameovernot a single #define or colon....edit: modified, now only 79 lines... Title: Re: Smallest Tetris Clone? Post by: Antoni Gual on August 09, 2007, 06:25:22 PM Great work, Deleter!Tetris is a game that I always was afraid of coding, it looked too complicated to me. If it can be reduced to 79 lines I will grasp it one of these days.BTW: I must change that avatar of mine, I guess It's  scaring young people.. Title: Re: Smallest Tetris Clone? Post by: Dav on August 11, 2007, 10:34:22 PM Nice one, Deleter. Small & complete!