01219245/javascript1/tutorial3/2 - ประวัติรุ่นแก้ไข

Jittat: /* Using objects to encapsulate behaviors */

2016-02-09T05:01:23Z

Using objects to encapsulate behaviors

2016-02-09T05:01:03Z

A transcript

2016-02-09T02:02:59Z

Exercise: Smart computer player

2016-02-09T02:02:24Z

Exercise: Get the game mechanic done

2016-02-09T02:01:44Z

Using objects to encapsulate behaviors

2016-02-09T02:00:36Z

A transcript

2016-02-09T01:58:55Z

Valid number of sticks

2014-01-28T00:27:19Z

2014-01-28T00:27:05Z

2014-01-28T00:26:10Z

Computer player

@@ แถว 188: / แถว 188: @@
          addToTranscript( "You pick " + num );
-         computerNum = computerPickAmount();
+         var computerNum = computerPickAmount();
          gameSticks.remove( computerNum );
          addToTranscript( "Computer picks " + computerNum );

@@ แถว 112: / แถว 112: @@
          $( "#gameTranscript" ).append( "<li>You pick " + num + "</li>" );
-         computerNum = computerPickAmount();
+         var computerNum = computerPickAmount();
          numSticks -= computerNum;
          $( "#numSticks" ).text( numSticks );

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	{{gitcomment\|Wow! we are done. Don't forget to commit.}}		{{gitcomment\|Wow! we are done. Don't forget to commit.}}
		+
		+	{{Callta\|6. You have a great game. Show it to the TA.}}

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	{{gitcomment\|Don't forget to commit when you get a unit of work done.}}		{{gitcomment\|Don't forget to commit when you get a unit of work done.}}
		+
		+	{{Callta\|5. Show the working game to the TA.}}

	== Exercise: Smart computer player ==		== Exercise: Smart computer player ==

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	{{gitcomment\|Does our game look better? Let's commit now.}}		{{gitcomment\|Does our game look better? Let's commit now.}}
		+
		+	{{Callta\|4. Show the program to the TA.}}

	== Exercise: Get the game mechanic done ==		== Exercise: Get the game mechanic done ==

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	{{gitcomment\|It's time to commit your work.}}		{{gitcomment\|It's time to commit your work.}}
		+
		+	{{Callta\|3. Show the program to the TA.}}

	== Using objects to encapsulate behaviors ==		== Using objects to encapsulate behaviors ==

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	{{gitcomment\|Let's commit our work.}}		{{gitcomment\|Let's commit our work.}}
		+
		+	{{Callta\|2. Show the program to the TA.}}

	== A randomized computer player ==		== A randomized computer player ==

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−	: ''This is the second part of [[01219245/javascript1/tutorial3\|Tutorial 3]] of [[01219245]]''	+	: ''This is the second part of [[01219245/javascript1/tutorial3\|JavaScript Tutorial 3]] of [[01219245]]''
	Your current JavaScript program in the script block probably look like this:		Your current JavaScript program in the script block probably look like this:

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	{{gitcomment\|Don't forget to commit when you get a unit of work done.}}		{{gitcomment\|Don't forget to commit when you get a unit of work done.}}

−	== ~~Computer~~ player ==	+	== Exercise: Smart computer player ==
		+	The last part is to make the computer player smart. There is a strategy that can ensure the player will win. Note that whatever choice one player make, another can make sure to complement the move so that the total number of sticks decrease by 4. Therefore, if a player can pick sticks so that after her move the remaining number of sticks is multiple of 4, then she can keep maintaining that fact and eventually she should be able to reduce that to 0; thus, winning the game.
		+
		+	However, the first player has this winning strategy, as she can pick 1 to reduce from 21 to 20. But we can make our computer player to take the opportunity to win when it has a chance, otherwise, it just plays randomly.
		+
		+	Implement this strategy in <tt>computerPickAmount</tt> and play with the game. Try to give it a chance to win and see if it can beat you.
		+
		+	{{gitcomment\|Wow! we are done. Don't forget to commit.}}