Need to select whatever object is at a certain position

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I am new to Unity and thought I would make a simple chess game to learn the engine but alas I have already hit a snag. I created my board using 64 (8x8) cubes. As of right now I want to be able to change the color of a cube to show a move is valid on that square. In otherwards if you pick up a pawn the first square infront should turn green. I have the cubes in an easy grid system so i know the location of the cube I need but the ID of that cube as it will change depending what square im on. Is there a way to select an object with its transform info. In pseudocode it would look like...

Var canMoveHere : GameObject = findObjectAtPosition(0,2,0);

Answer 1

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Answer by whydoidoit · Dec 28, 2012 at 08:52 AM

You'd probably be better off having a 2D array of transforms (or a 1D array where every 8th element is a new line) and then you can just look up the transform, get its renderer and fiddle with it:

    var squares : Transform[]; //You would drag and drop the squares onto here using the inspector

    function GetSquare(x : int, y : int) : Transform
    {
          return squares[x + y * 8];
    }


    function SetTheColorOfASquare(x : int, y : int, color : Color)
    {
          GetSquare(x,y).renderer.material.color = color;
    }

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Answer 2

Answer by Pysassin · Dec 28, 2012 at 08:48 AM

I just tagged all the tiles then searched for all the objects by tag and compared the positions in a for loop. Coloring the cube is remaining dificult. Cant get it to change back to the original color.

Edit: ultimately went with an overlsy but I like the idea mike and will keep it in mind.

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Need to select whatever object is at a certain position

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