mouse click on sprite image rather than on its bounding box

Question

In all the examples of games, which I examined, written in C++/C# using SFML, .NET Framework, WPF, Python and HTML5 a sprite reacts on mouseClick made within the sprite's bounding box.

Is there a technique in to make the sprite react to clicks made within the sprite image only?

I examined many games, but not a single one exhibit the necessary behaviour

Mike Nakis · Accepted Answer · 2024-02-06 10:28:07Z

3

The technique is as follows:

Obtain the mouse click coordinates.
Subtract the sprite coordinates, to obtain sprite-local offsets.
Use the sprite-local offsets to look up the pixel in the sprite.
If the pixel is transparent, then the click was not within the sprite image.

answered Feb 6, 2024 at 10:28

Mike Nakis

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1 Comment

Andre186 Over a year ago

Thank you, Mike! Excellent idea. I wish I thought of it myself!

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