data:image/png;base64,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'm kind of bummed that I didn't find a beautiful one-line solution using FIND FIRST, but it just gives the value it finds, not the position in the list, which is what we need to find the line endpoints in WIN LINES. So it's a plain old fashioned FOR loop.3.3.3.TIF B. See below.playingfalseEHHard ComputerEasy Computer3.3.3.TIF B. See below.playingfalse3.3.3.5X's turn?3.3.3.1 and 3.3.3.5
See 3.3.3.3 above for why we have to test PLAYING.available squares3.3.3 TIF A, here on down. See comment below.available squares13.3.3.5data:image/png;base64,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10TIF B: First of all, we don't want Square, the sprite with nine clones to show the board, to move around. So I added another sprite, named Sprite. It's hidden, but can draw lines with its thick red pen. (Click on Sprite at the right to see its code.) The actual work is done in procedure DRAW WIN LINE. But instead of running DRAW WIN LINE in the Square sprite (this one), we TELL Sprite TO do it. We modify makeBoard for TIF B because drawn lines are behind sprites on the stage, so the win line is hidden by the board. To fix that, we apply a ghost effect (transparency) to the board sprites. The value 30 for the ghost effect was found by experiment. Any more and the board is too faint; any less and the line is.falseX,2,X,O,O,6,X,8,9true-100,50100,50-100,0100,0-100,-50100,-50-50,100-50,-1000,1000,-10050,10050,-100-100,100100,-100-100,-100100,100p