2d Array And Graphics Objects - Java | Dream.In.Code

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7 Replies - 50 Views - Last Post: Today, 12:56 PM Rate Topic:

#1 shortbus ?

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• Posts: 39
• Joined: 26-March 13

Posted Today, 12:05 PM

I'm having learning about 2d arrays in class and i want to reinforce what ive have learned. So i have started to make a basic tic tac toe game. The problem im having is i dont know how to make it so my graphic object prints out in a 3 by 3 grid. this is the code i have so far.

 import java.applet.*; import java.awt.*; public class tic extends Applet {  int[][] test = new int [3][3];   public void paint(Graphics g){      for (int i=0; i < test.length; i++) {         for (int j=0; j < test[i].length; j++) {                 Expo.drawRectangle(g,100,100,40,50);// ths is just a class im using to draw the rectnagles                          }          System.out.println(" ");      }       }    } 

when you compile it you'll see it only prints out one square.

Is This A Good Question/Topic? 0

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Replies To: 2d array and graphics objects

#2 macosxnerd101 ?

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• Posts: 33,813
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Re: 2d array and graphics objects

Posted Today, 12:07 PM

You're drawing everything in the same coordinates on your UI: Expo.drawRectangle(g,100,100,40,50);.

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#3 shortbus ?

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• Posts: 39
• Joined: 26-March 13

Re: 2d array and graphics objects

Posted Today, 12:10 PM

should i make a for loop to increment the position for each square by say 5 for both x and y or would that not work

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#4 macosxnerd101 ?

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Re: 2d array and graphics objects

Posted Today, 12:19 PM

That will get you squares along the diagonals. Think about the inner loop as iterating through each row. At the conclusion of an iteration of the outer loop, a row has been drawn.

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#5 shortbus ?

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Re: 2d array and graphics objects

Posted Today, 12:38 PM

so i should make x and y increment at the end of the outer loop, yea im really lost right now i just was taught this today so i am a bit lost

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#6 macosxnerd101 ?

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Re: 2d array and graphics objects

Posted Today, 12:43 PM

So in your inner loop, you want to go along the x-axis. After your inner loop terminates, you want to go to the next row (travel along the y-axis), but then reset your x-position. So:

 (x1, y1) | (x2, y1) | (x3, y1) (x1, y2) | (x2, y2) | (x3, y3) 

Quote

so i should make x and y increment at the end of the outer loop, yea im really lost right now i just was taught this today so i am a bit lost

Which is fair. I'm a big fan of learning the basics first before jumping into GUI programming though, as the Java GUI is so thick. Just my two cents. I might try and get the Tic-Tac-Toe project knocked out on a console-based version.

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#7 shortbus ?

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Re: 2d array and graphics objects

Posted Today, 12:52 PM

i might just try that thanks for the help!

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#8 macosxnerd101 ?

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Re: 2d array and graphics objects

Posted Today, 12:56 PM

Not a problem. Good luck with your project!

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