[1.18.2] Prevent item from being placed in inventory

[Daeruin]

I'm trying to prevent my block from being placed in certain vanilla inventories. I'm using MouseClickedEvent.Pre. By canceling the event, I can prevent items from being picked up by the mouse cursor, but for some reason canceling the event doesn't prevent items from being placed into a slot. If there's a better way other than listening for mouse clicks, I'm all ears.

Here's my code - the full logic isn't in place, I'm just trying to successfully prevent the block from being placed in any inventory to start off with.

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@SubscribeEvent
    public static void onMouseInput(ScreenEvent.MouseClickedEvent.Pre event)
    {
        Screen screen = event.getScreen();

        // If screen isn't a container, we don't care - exit
        if (!(screen instanceof AbstractContainerScreen)) return;

        Slot slotUnderMouse = ((AbstractContainerScreen<?>) screen).getSlotUnderMouse();

        // If player didn't click on a slot, we don't care - exit
        if (slotUnderMouse == null) return;

        Item itemOnCursor = ((AbstractContainerScreen<?>) screen).getMenu().getCarried().getItem();

        if (PrimalConfig.basketsRestrictedToHotBar.get()
                && itemOnCursor instanceof BasketBlockItem
                && slotUnderMouse.container instanceof Inventory)
        {
            event.setCanceled(true);
        }
    }

 

 

[Draco18s]

Just so you know, that's not the only way items can end up inside block inventories.

I know there's a way for the inventory to determine if an item is valid for its slot, but I'm not sure there's a reciprocal call asking the item if it can be placed in the slot.

[Daeruin]

I'm aware. There are lots of ways for items to end up in a given slot. It's all stuff I handled in 1.12, just struggling to figure out how to do the same thing in 1.18. If I could modify the vanilla inventories or slots to override what items they allow, it would be much easier. Like if there were an event that hooked into Slot#mayPlace, I would be ecstatic.

I think I actually figured it out just now. Apparently there's a MouseReleasedEvent now, and I had to use that instead. I guess it's the release of the button that actually triggers the item going into the slot.