hilbert.tal (1624B)
1 |00 @System &vector $2 &wst $1 &rst $1 &eaddr $2 &ecode $1 &pad $1 &r $2 &g $2 &b $2 &debug $1 &halt $1 2 |20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1 3 4 |0100 5 6 @on-reset ( -> ) 7 ( | theme ) 8 #6f04 .System/r DEO2 9 #7f00 .System/g DEO2 10 #8f00 .System/b DEO2 11 ( | screen size ) 12 #00c0 13 ( ) DUP2 .Screen/width DEO2 14 ( ) .Screen/height DEO2 15 ( | pen ) 16 #0020 17 ( ) DUP2 .Screen/x DEO2 18 ( ) .Screen/y DEO2 19 ( | vector ) 20 ;on-frame .Screen/vector DEO2 21 BRK 22 23 @on-frame ( -> ) 24 [ LIT2 &f $2 ] INC2 DUP2 ,&f STR2 25 ( | end ) 26 DUP2 #0400 LTH2 ?{ 27 POP2 #0000 .Screen/vector DEO2 28 BRK } 29 d2xy 30 ( | draw line ) 31 .Screen/y DEI2 diff ,&y STR2 32 .Screen/x DEI2 diff ,&x STR2 33 #0400 34 &l ( -- ) 35 .Screen/x DEI2k [ LIT2 &x $2 ] ADD2 ROT DEO2 36 .Screen/y DEI2k [ LIT2 &y $2 ] ADD2 ROT DEO2 37 [ LIT2 01 -Screen/pixel ] DEO 38 INC GTHk ?&l 39 POP2 BRK 40 41 @diff ( a* b* -- dir* ) 42 EQU2k ?{ 43 LTH2 ?{ #0001 JMP2r } 44 #ffff JMP2r } 45 POP2 POP2 #0000 JMP2r 46 47 @d2xy ( d* -- x* y* ) 48 ,&t STR2 49 #0000 50 ( ) DUP2 ,&x STR2 51 ( ) ,&y STR2 52 #2001 53 &l ( -- ) 54 #00 OVR STH2 55 [ LIT2 &t $2 ] DUP2 #02 SFT2 ,&t STR2 56 ( ) DUP2 #01 SFT2 #0001 AND2 DUP2 ,&rx STR2 57 ( ) EOR2 #0001 AND2 ,&ry STR2 58 [ LIT2 &x $2 ] [ LIT2 &y $2 ] [ LIT2 &ry $2 ] 59 ( ) DUP2r [ LIT2r 0001 ] SUB2r 60 ( | rot ) 61 ORA ?{ 62 [ LIT2 &rx $2 ] #0001 NEQ2 ?{ 63 ( rx-n-1 ) SWP2 STH2kr SWP2 SUB2 64 ( ry-n-1 ) SWP2 STH2kr SWP2 SUB2 } 65 ( swap ) SWP2 } 66 POP2r 67 ( ) STH2kr ,&ry LDR2 MUL2 ADD2 ,&y STR2 68 ( ) STH2r ,&rx LDR2 MUL2 ADD2 ,&x STR2 69 DUP ADD GTHk ?&l 70 POP2 71 ( ) ,&x LDR2 #20 SFT2 #0020 ADD2 72 ( ) ,&y LDR2 #20 SFT2 #0020 ADD2 JMP2r 73