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Cart #56636 | 2018-09-14 | Code ▽ | Embed ▽ | No License

So this is a followup to a thread I made a few days ago about having trouble parsing a table that has multiples of the same piece.
In this example I am trying to select either piece (which will be indicated by an arrow) but as you will see it only works for one.

P#56637 2018-09-13 22:29 ( Edited 2018-09-14 22:17)

Your problem is that every time you check or set p.selected you're referencing a global table called p which is only declared in the create_piece function, so it will always be the last piece you created.

If you only want to have one piece selected at a time you don't need to have an overlapped variable or a selected boolean for each piece, you could just have a global that references the currently selected piece.

Here's a short example of how you might do that for your select_piece function:

function try_select()
    for p in all(pieces) do 
        if hand.x >= p.x and hand.x <= p.x + 8 and hand.y >= p.y and hand.y <= p.y + 8 then
            selected = p
            return true

function select_piece()
    if btnp(5) then
        selected = nil

    if btnp(4) then
        if not try_select() and selected then
            create_destination_box(hand.x - 6, hand.y - 2, 8)

You won't be able to cut and paste that directly into your code and have it magically work, but hopefully it'll give you an idea for how you could fix the issue your having.

P#56647 2018-09-14 04:50 ( Edited 2018-09-14 08:50)

Definitely helped me over the hump, thanks a ton.

P#56685 2018-09-14 18:17 ( Edited 2018-09-14 22:17)

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