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javapluginsbukkit

Bukkit preventing vine growth

I'm writing a Bukkit plugin to prevent vine growth, after cancelling BlockGrowEvent, the vine is still growing and spreading. How can I prevent vine growth, and does the event even fire when vine grows?

Code:

@EventHandler (ignoreCancelled = true)
public void onVineGrow(BlockGrowEvent event){
    event.setCancelled(true);
}
Solution

  • The BlockGrowEvent is only called when plants such as wheat, sugar cane, a cactus, a watermelon or a pumpkin grow (and some other plants too). To detect vines spreading, listen to the BlockSpreadEvent. Since this event is cancellable, the block to which the vine is spreading will still be air while you're handling the event, so to check if the block is a vine and not a fire block or mushroom spreading, you can look at the new BlockState of the block being spread to and check whether its type event.getNewState().getData().getItemType() is equal to Material.VINE.