Home » Recent acquisitions » Acorn ADFS disks » adfs_ArchimedesWorld_199201.adf » January92 » !AWJan92/Goodies/ArcAut/Automatons/Diffuse
!AWJan92/Goodies/ArcAut/Automatons/Diffuse
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Recent acquisitions » Acorn ADFS disks » adfs_ArchimedesWorld_199201.adf » January92 |
| Filename: | !AWJan92/Goodies/ArcAut/Automatons/Diffuse |
| Read OK: | ✔ |
| File size: | 04D1 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
AUTOMATON* Diffuse 'Hot' & 'cold' lines & circles are scattered over the background. Diffuse then proceeds to evolve the picture in a manner similar to the way that heat would be conducted through a medium, with different colours corresponding to different temperatures; white is hot & black, cold. The initial hot & cold regions maintain their temperature, acting as heat sources & sinks. Eventually a static pattern is reached. Try a 200x100 window. INITIALISATION* 10DEF PROCdo 20*SetEval wrap on 30ENDPROC SCREEN* 10DEF PROCdo 20DIM buf% 256 30SYS "OS_ReadVarVal","sux",buf%,256:sux%=!buf% 40SYS "OS_ReadVarVal","suy",buf%,256:suy%=!buf% 50GCOL 128+32 TINT 128:CLG 60GCOL 0 TINT 0 70FOR Q%=1TO RND(4)+5:PROClin:NEXT 80FOR Q%=1TO RND(3):PROCcir:NEXT 90GCOL 63 TINT 255 100FOR Q%=1TO RND(4)+5:PROClin:NEXT 110FOR Q%=1TO RND(3):PROCcir:NEXT 120ENDPROC 130DEF PROClin 140MOVE RND(sux%*4)-sux%*2,RND(suy%*4)-suy%*2:DRAW BY RND(sux%*4)-sux%*2,RND(suy%*4)-suy%*2 150ENDPROC 160DEF PROCcir 170CIRCLE FILL RND(sux%*4)-sux%*2,RND(suy%*4)-suy%*2,RND(SQR(sux%*suy%/PI))/5 180ENDPROC CODE* ( CELL 0 = IF ( 0 ==) CELL 255 = IF (255 ==) READ_NEIG SUM_NEIG 4 + 3 >> == ) END*
00000000 41 55 54 4f 4d 41 54 4f 4e 2a 0a 0a 20 20 44 69 |AUTOMATON*.. Di| 00000010 66 66 75 73 65 0a 0a 20 20 27 48 6f 74 27 20 26 |ffuse.. 'Hot' &| 00000020 20 27 63 6f 6c 64 27 20 6c 69 6e 65 73 20 26 20 | 'cold' lines & | 00000030 63 69 72 63 6c 65 73 20 61 72 65 20 73 63 61 74 |circles are scat| 00000040 74 65 72 65 64 20 6f 76 65 72 20 74 68 65 20 62 |tered over the b| 00000050 61 63 6b 67 72 6f 75 6e 64 2e 20 44 69 66 66 75 |ackground. Diffu| 00000060 73 65 0a 20 20 74 68 65 6e 20 70 72 6f 63 65 65 |se. then procee| 00000070 64 73 20 74 6f 20 65 76 6f 6c 76 65 20 74 68 65 |ds to evolve the| 00000080 20 70 69 63 74 75 72 65 20 69 6e 20 61 20 6d 61 | picture in a ma| 00000090 6e 6e 65 72 20 73 69 6d 69 6c 61 72 20 74 6f 20 |nner similar to | 000000a0 74 68 65 20 77 61 79 20 74 68 61 74 0a 20 20 68 |the way that. h| 000000b0 65 61 74 20 77 6f 75 6c 64 20 62 65 20 63 6f 6e |eat would be con| 000000c0 64 75 63 74 65 64 20 74 68 72 6f 75 67 68 20 61 |ducted through a| 000000d0 20 6d 65 64 69 75 6d 2c 20 77 69 74 68 20 64 69 | medium, with di| 000000e0 66 66 65 72 65 6e 74 20 63 6f 6c 6f 75 72 73 0a |fferent colours.| 000000f0 20 20 63 6f 72 72 65 73 70 6f 6e 64 69 6e 67 20 | corresponding | 00000100 74 6f 20 64 69 66 66 65 72 65 6e 74 20 74 65 6d |to different tem| 00000110 70 65 72 61 74 75 72 65 73 3b 20 77 68 69 74 65 |peratures; white| 00000120 20 69 73 20 68 6f 74 20 26 20 62 6c 61 63 6b 2c | is hot & black,| 00000130 20 63 6f 6c 64 2e 20 54 68 65 0a 20 20 69 6e 69 | cold. The. ini| 00000140 74 69 61 6c 20 68 6f 74 20 26 20 63 6f 6c 64 20 |tial hot & cold | 00000150 72 65 67 69 6f 6e 73 20 6d 61 69 6e 74 61 69 6e |regions maintain| 00000160 20 74 68 65 69 72 20 74 65 6d 70 65 72 61 74 75 | their temperatu| 00000170 72 65 2c 20 61 63 74 69 6e 67 20 61 73 20 68 65 |re, acting as he| 00000180 61 74 0a 20 20 73 6f 75 72 63 65 73 20 26 20 73 |at. sources & s| 00000190 69 6e 6b 73 2e 20 45 76 65 6e 74 75 61 6c 6c 79 |inks. Eventually| 000001a0 20 61 20 73 74 61 74 69 63 20 70 61 74 74 65 72 | a static patter| 000001b0 6e 20 69 73 20 72 65 61 63 68 65 64 2e 20 54 72 |n is reached. Tr| 000001c0 79 20 61 20 32 30 30 78 31 30 30 0a 20 20 77 69 |y a 200x100. wi| 000001d0 6e 64 6f 77 2e 0a 0a 49 4e 49 54 49 41 4c 49 53 |ndow...INITIALIS| 000001e0 41 54 49 4f 4e 2a 0a 0a 20 20 31 30 44 45 46 20 |ATION*.. 10DEF | 000001f0 50 52 4f 43 64 6f 0a 20 20 32 30 2a 53 65 74 45 |PROCdo. 20*SetE| 00000200 76 61 6c 20 77 72 61 70 20 6f 6e 0a 20 20 33 30 |val wrap on. 30| 00000210 45 4e 44 50 52 4f 43 0a 0a 53 43 52 45 45 4e 2a |ENDPROC..SCREEN*| 00000220 0a 0a 20 20 31 30 44 45 46 20 50 52 4f 43 64 6f |.. 10DEF PROCdo| 00000230 20 0a 20 20 32 30 44 49 4d 20 62 75 66 25 20 32 | . 20DIM buf% 2| 00000240 35 36 0a 20 20 33 30 53 59 53 20 22 4f 53 5f 52 |56. 30SYS "OS_R| 00000250 65 61 64 56 61 72 56 61 6c 22 2c 22 73 75 78 22 |eadVarVal","sux"| 00000260 2c 62 75 66 25 2c 32 35 36 3a 73 75 78 25 3d 21 |,buf%,256:sux%=!| 00000270 62 75 66 25 0a 20 20 34 30 53 59 53 20 22 4f 53 |buf%. 40SYS "OS| 00000280 5f 52 65 61 64 56 61 72 56 61 6c 22 2c 22 73 75 |_ReadVarVal","su| 00000290 79 22 2c 62 75 66 25 2c 32 35 36 3a 73 75 79 25 |y",buf%,256:suy%| 000002a0 3d 21 62 75 66 25 0a 20 20 35 30 47 43 4f 4c 20 |=!buf%. 50GCOL | 000002b0 31 32 38 2b 33 32 20 54 49 4e 54 20 31 32 38 3a |128+32 TINT 128:| 000002c0 43 4c 47 0a 20 20 36 30 47 43 4f 4c 20 30 20 54 |CLG. 60GCOL 0 T| 000002d0 49 4e 54 20 30 0a 20 20 37 30 46 4f 52 20 51 25 |INT 0. 70FOR Q%| 000002e0 3d 31 54 4f 20 52 4e 44 28 34 29 2b 35 3a 50 52 |=1TO RND(4)+5:PR| 000002f0 4f 43 6c 69 6e 3a 4e 45 58 54 0a 20 20 38 30 46 |OClin:NEXT. 80F| 00000300 4f 52 20 51 25 3d 31 54 4f 20 52 4e 44 28 33 29 |OR Q%=1TO RND(3)| 00000310 3a 50 52 4f 43 63 69 72 3a 4e 45 58 54 0a 20 20 |:PROCcir:NEXT. | 00000320 39 30 47 43 4f 4c 20 36 33 20 54 49 4e 54 20 32 |90GCOL 63 TINT 2| 00000330 35 35 0a 20 31 30 30 46 4f 52 20 51 25 3d 31 54 |55. 100FOR Q%=1T| 00000340 4f 20 52 4e 44 28 34 29 2b 35 3a 50 52 4f 43 6c |O RND(4)+5:PROCl| 00000350 69 6e 3a 4e 45 58 54 0a 20 31 31 30 46 4f 52 20 |in:NEXT. 110FOR | 00000360 51 25 3d 31 54 4f 20 52 4e 44 28 33 29 3a 50 52 |Q%=1TO RND(3):PR| 00000370 4f 43 63 69 72 3a 4e 45 58 54 0a 20 31 32 30 45 |OCcir:NEXT. 120E| 00000380 4e 44 50 52 4f 43 0a 20 31 33 30 44 45 46 20 50 |NDPROC. 130DEF P| 00000390 52 4f 43 6c 69 6e 0a 20 31 34 30 4d 4f 56 45 20 |ROClin. 140MOVE | 000003a0 52 4e 44 28 73 75 78 25 2a 34 29 2d 73 75 78 25 |RND(sux%*4)-sux%| 000003b0 2a 32 2c 52 4e 44 28 73 75 79 25 2a 34 29 2d 73 |*2,RND(suy%*4)-s| 000003c0 75 79 25 2a 32 3a 44 52 41 57 20 42 59 20 52 4e |uy%*2:DRAW BY RN| 000003d0 44 28 73 75 78 25 2a 34 29 2d 73 75 78 25 2a 32 |D(sux%*4)-sux%*2| 000003e0 2c 52 4e 44 28 73 75 79 25 2a 34 29 2d 73 75 79 |,RND(suy%*4)-suy| 000003f0 25 2a 32 0a 20 31 35 30 45 4e 44 50 52 4f 43 0a |%*2. 150ENDPROC.| 00000400 20 31 36 30 44 45 46 20 50 52 4f 43 63 69 72 0a | 160DEF PROCcir.| 00000410 20 31 37 30 43 49 52 43 4c 45 20 46 49 4c 4c 20 | 170CIRCLE FILL | 00000420 52 4e 44 28 73 75 78 25 2a 34 29 2d 73 75 78 25 |RND(sux%*4)-sux%| 00000430 2a 32 2c 52 4e 44 28 73 75 79 25 2a 34 29 2d 73 |*2,RND(suy%*4)-s| 00000440 75 79 25 2a 32 2c 52 4e 44 28 53 51 52 28 73 75 |uy%*2,RND(SQR(su| 00000450 78 25 2a 73 75 79 25 2f 50 49 29 29 2f 35 0a 20 |x%*suy%/PI))/5. | 00000460 31 38 30 45 4e 44 50 52 4f 43 0a 0a 43 4f 44 45 |180ENDPROC..CODE| 00000470 2a 0a 0a 28 20 43 45 4c 4c 20 20 20 30 20 3d 20 |*..( CELL 0 = | 00000480 49 46 20 28 20 20 30 20 3d 3d 29 0a 20 20 43 45 |IF ( 0 ==). CE| 00000490 4c 4c 20 32 35 35 20 3d 20 49 46 20 28 32 35 35 |LL 255 = IF (255| 000004a0 20 3d 3d 29 0a 20 20 52 45 41 44 5f 4e 45 49 47 | ==). READ_NEIG| 000004b0 0a 20 20 53 55 4d 5f 4e 45 49 47 20 34 20 2b 20 |. SUM_NEIG 4 + | 000004c0 33 20 3e 3e 20 20 3d 3d 20 20 29 0a 0a 45 4e 44 |3 >> == )..END| 000004d0 2a |*| 000004d1
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