it already needs to locate the correct pair anyway to know the left/right for DoubleChestInventoryWindow, so we might as well use this logic for initializing the DoubleChestInventory itself too. The old logic in tile/Chest didn't work correctly.
this unblocks a variety of changes, such as positionless tiles, enhanced APIs on Blocks for inventories, and also eliminates a bunch of cyclic references within the core code.
linked to #5033
we want viewers to be as close to decorative as possible, so that they provide useful information to plugins, but don't get in the way of other changes.
Support for this was introduced in PHP 8.0, though not mentioned in any changelog: php/php-src#5777
This simplifies the subprocess handling considerably. However, there is a potential for problems if PHP generates any E_* errors, since these get written to STDOUT as well.
To avoid error messages being treated as a command, a hash is attached to each IPC message, seeded with an incrementing counter. This prevents error messages causing command replays or unintended commands.
Unfortunately, PHP doesn't support binding pipes other than stdin/stdout/stderr on Windows for the child process, so we have to use stdout for this. In the future, if it becomes possible, a dedicated pipe for the purpose should be introduced. We'd need something like php://fd/<number> to work on Windows.
Support for more advanced stuff like NBT copying wasn't added in this PR, as the NBT used by PM is currently an inconsistent mess and doesn't play nice with vanilla. In the interests of avoiding this mess propagating, it's been left for another time.
Adds PlayerEntityPickEvent a la PlayerBlockPickEvent
and Entity->getPickedItem().
This allows, for example, banning the usage of spawn eggs, without preventing opening of doors, without the need for item ID whitelists.
It also allows customizing the behaviour of item and block interactions when sneaking - it's now possible to force spawn eggs to work when sneaking, or force containers to open.
Finally, this also allows preventing any interaction at all without preventing block placement (by setting both to false). Since cancelling the event will typically prevent placement too (which might not be desired).
Side note: Blocks are now always synced when right-clicking on a block.
This differs from the previous behaviour, where the blocks were only synced when the action "failed".
However, since this change introduces a situation where the action may succeed but have different results than the client expects, it's best to just always sync blocks in this situation.
Fixes#3267
