Is it possible to map mouse coordinates to isometric tiles with this coordinate system?

Posted by plukich on Game Development See other posts from Game Development or by plukich
Published on 2012-10-05T13:31:38Z Indexed on 2012/10/16 17:22 UTC
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I'm trying to implement mouse interaction in a 2D isometric game, but I'm not sure if it's possible given the coordinate system used for tile maps in the game.

I've read some helpful things like this. However, this game's coordinate system is "jagged" (for lack of a better word), and looks like this:

Example

Is it even possible to map mouse coordinates to this successfully, since the y-axis can't be drawn on this tile-map as a straight line?

I've thought about doing odd-y-value translations and even-y-value translations with two different matrices, but that only makes sense going from tile to screen.

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