InteractListener.java 文件源码

private boolean allowedByBlockPlaceEvent(Block placedBlock, BlockState replacedBlockState, Block placedAgainst,
        Player player) {
    Material originalMaterial = placedBlock.getType();

    BlockPlaceEvent placeEvent = new BlockPlaceEvent(placedBlock, replacedBlockState, placedAgainst,
            player.getInventory().getItemInMainHand(), player, true, EquipmentSlot.HAND);
    Bukkit.getPluginManager().callEvent(placeEvent);

    Material placedMaterial = placeEvent.getBlockPlaced().getType();
    if (placeEvent.isCancelled() || !placedMaterial.equals(originalMaterial)) {
        // We consider the event cancelled too when the placed block was
        // changed
        return false;
    }
    return true;
}