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- 10 HCOLOR= 3
- 20 SX = RND(1) *280
- 30 SY = RND(1) *192
- 40 DX = (2 -4 *(SX >140)) *( RND(1) *2 +1)
- 50 DY = (2 -4 *(SY >86)) *( RND(1) *2 +1)
- 60 LX = ( RND(0) *10 +5) *DX
- 70 LY = ( RND(0) *10 +5) *DY
- 80 HGR2
- 90 HPLOT SX,SY TO SX +LX,SY
- 100 HPLOT TO SX +LX,SY +LY
- 110 HPLOT TO SX,SY +LY
- 120 HPLOT TO SX,SY
- 130 LX = LX +DX:LY = LY +DY
- 140 SX = SX +DX:SY = SY +DY
- 150 IF SX +LX <0 OR SX +LX >280 OR SY +LY <0 OR SY +LY >191 THEN 20
- 160 GOTO 90