CODEWITHSUNDEEP
androidcoordinates
Tim Gim
Tim Gim

Reputation: 174

How to connect coordinates of touch with game board on different screens

I'm porting my game from WP7 to Android. My game is a kind of "Color Lines" game. There is a board with cells (it is a part of static background image), where can be placed balls. On WP7 everything is fine with coordinates: all WP7 devices has resolution of 800*480, and I can easily define which cell is user has tapped.

But there is some problem with android: on different screens I face different resolution. My game board has some graphical borders and I don't know their sizes on every android screen.

I don't know HOW to connect coordinates from getTouch event to the touched cell on the board(as I said above, it is a part of static background image of resolution 800*480).

Also, I don't know how to find a coordinates of center of the certain cell, where I want to place the ball.

Upvotes: 0

Views: 323

Answers (1)

jpa
jpa

Reputation: 168

Scale the coordinates from the event to your image.

   DisplayMetrics metrics = new DisplayMetrics();
   getWindowManager().getDefaultDisplay().getMetrics( metrics );
   float x = 800 / metrics.widthPixel * event.getX();
   float y = 480 / metrics.heightPixel * event.getY();

Upvotes: 2

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