Help with a battleship program?

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anibb
anibb 2016-4-18
评论： Walter Roberson 2016-4-18
I'm writing this code to play battleship against the computer and I've written the code to the point where I can get all the ships placed (battleship- 4 cells long, submarine- 3 cells long, cruiser- 2 cells long, and destroyer- 1 cell). But now I have to make the computer randomly guess spots on the board(9x9) and check to see if it hits one of the ships. The computer gets 29 missiles and if the computer doesn't get a hit for 7 guesses to automatically hit a ship. Please help I've been messing around with loops all day and can't get it right. Thank you.

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回答（2 个）

Walter Roberson
Walter Roberson 2016-4-18
I suggest you use logical indices, 1 to 81, indices into the 9 x 9 board. You can pre-calculate the guess locations by using
[gr, gc] = sub2ind([9 9], randperm(81));
then guess #K is at gr(K), gc(K) . No duplicate guesses will be possible if you do this.
Image Analyst
Image Analyst 2016-4-18
Use randi() once to get a linear index indicating an array location, or twice to get a row,column pair.
I believe there are some battleship games in the File Exchange.
  2 个评论
anibb
anibb 2016-4-18
Yea I looked a those. There's only 2 and they're more complicated than what i'm trying to do. And they're having the user click on the board to guess. I'm just trying to check whether the computer's guess is where a ship is. And I'm having a lot of trouble figuring out how to automatically make a hit every 7 misses.
Walter Roberson
Walter Roberson 2016-4-18
Just keep making guesses (that have not been made before) until a hit is made, but do not count those guesses, and do not "tell" the computer where the guesses were made (that is, so that the computer would still have those squares in the list of places it was allowed to guess.)

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