If you need to check the click on a rectangular area, then you can use this beautiful and clear post:
You can make this a little easier with the next module if you use sprite:
If you need to track a click on a shape of a complex shape, then there is a wonderful library with support for drag and other interesting things:
And if you need to perfectly check the complex shape, then you can take advantage of my project. But this is almost always not necessary:
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