Strange Patterns (ZX Spectrum)
James Southgate
Colchester
Essex
This short program makes good use of the colour high-resolution graphics on the Spectrum. When the program is run a pattern is drawn on the screen. This pattern changes in shape and colour.
10 LET y=INT (RND*70)+100: LET x=INT (RND*60): LET z=INT (RND*3)-4
20 FOR r=y TO x STEP z
30 PLOT r,r: DRAW 0,175-2*r
40 DRAW 255-2*r,0
50 DRAW 0,-175+2*r
60 DRAW -255+2*r,0
70 INK RND*6
80 OVER 1
90 NEXT r
100 GO TO 10
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