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- 10 key off:screen 2:cls
- 50 for i=-4 to 4
- 60 a=320+30*i:b=100
- 70 draw "BM"+str$(a)+","+str$(b)+"d5"
- 80 next i
- 90 for i=-3 to 3
- 100 a=318:b=100-30*i
- 110 draw "BM"+str$(a)+","+str$(b)+"r5"
- 120 next i
- 130 for i=-120 to 0
- 140 gosub 1000
- 150 y=int(30*z+.5)
- 160 pset (320+i,100-y)
- 165 pset (320-i,100-y)
- 170 next i
- 180 sound 3000,.1:t=timer:while t+1.5>timer:wend
- 190 if inkey$="" then 180
- 200 end
- 1000 r=-i/30
- 1010 z=3*exp(-r*r/4)-1
- 1020 return