[SOLVED]Remove an object from a table.

[Plu]

Add this in your creation function, after you make the fixture.

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coin.fixture.setUserData( coin )

It will store a reference to the coin inside the fixture. Now, when you resolve the collision, you should be able to get to the fixture, and then you can recover the coin by doing this:

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fixture.getUserData()

You can then match the coin you get to the objects inside the coins table by just comparing them, and then remove it.

that's a problem because all of the objects in the table are exactly the same

This isn't really true; no two objects are the same unless they are literally references to the very same object. These two values below will be considered different:

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a = { x = 10, y = 100 }
b = { x = 10, y = 100 }

a == b -- false!

However, if you have two references to the same table, they will match. But since they match the same thing, if you change one, you also change the other:

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a = { x = 10, y = 100 }
b = a -- now you have a reference to the same table a

a == b -- now true!
a.x = 100 -- b.x is now also 100, because b is just a link to the same table that a goes to.

[Dr.Tyler O.]

This isn't really true; no two objects are the same unless they are literally references to the very same object.

Thank you so much for the explanation. I can't believe I didn't realize that before.