I have recently been working on having my custom apple drop from oak trees and dark oak trees, however as I was testing it the game crashed, here's the crash log: https://hastebin.com/xifabokeci.sql.

Here's ApplesFromLeavesEvent.java: https://hastebin.com/alipepoqok.java.

If you need any other classes tell me.

Thanks for the help in advance!

 

I may be wrong however I believe it has something to do with: 

if(event.getState().getValue(BlockOldLeaf.VARIANT) == EnumType.OAK)

and

else if(event.getState().getValue(BlockOldLeaf.VARIANT) == EnumType.DARK_OAK)

im currently testing this code here:

if(event.getState().getBlock() == Blocks.LEAVES.getDefaultState().withProperty(BlockOldLeaf.VARIANT, BlockPlanks.EnumType.OAK))
        {
            event.getDrops().add(new ItemStack(ItemInit.GREEN_APPLE));
            event.setDropChance(0.05f);
        }
        
        else if(event.getState().getBlock() == Blocks.LEAVES2.getDefaultState().withProperty(BlockNewLeaf.VARIANT, BlockPlanks.EnumType.DARK_OAK))
        {
            event.getDrops().add(new ItemStack(ItemInit.GREEN_APPLE));
            event.setDropChance(0.05f);
        }

HarvestDropsEvent can be called for any block in the game, 99% of which won't have the BlockOldLeaf.VARIANT property in their block state. As you've seen, calling IBlockState#getValue with an invalid property throws an exception.

 

You need to check the Block itself first, use IBlockState#getBlock to get it and then check that it's equal to Blocks.LEAVES/Blocks.LEAVES2.

 

16 minutes ago, UM3 F0R TH3 W1N said:

if(event.getState().getBlock() == Blocks.LEAVES.getDefaultState().withProperty(BlockOldLeaf.VARIANT, BlockPlanks.EnumType.OAK))

IBlockState#getBlock returns a Block, which will never be equal to an IBlockState. You need to check the Block and the properties in two separate expressions within the if condition.

 

Edit: It looks like @diesieben07 already explained most of this in your previous threads. Please stop creating new threads for the same topic.

Edited December 27, 20186 yr by Choonster

13 hours ago, Choonster said:

Edit: It looks like @diesieben07 already explained most of this in your previous threads. 

he explained how to do the event but not the check for what block, I know how to check for a block without meta but not for a block with meta

Edited December 27, 20186 yr by UM3 F0R TH3 W1N