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[1.16.5] Getting unexpected results for BlockState#getHarvestLevel()


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Hi there,

I'm having some difficulty getting a block's actual harvest level - for context, I am implementing a ranged pickaxe which has a variable mining level depending on "oxidation".

To determine whether a block should be mined, I am using BlockState#getHarvestLevel(), however with certain blocks (e.g. glass and every block from other mods), it is returning -1, which I expect to be the value for unbreakable blocks e.g. bedrock, so I was checking against that.

Am I supposed to use a different method to get a block's harvest level? Or should I ignore the -1 check and simply hardcode in unbreakable blocks?

private boolean shouldMine(BlockState blockState)
    int blockHardness = blockState.getHarvestLevel();
    int oxidationStage = 0;
    if (this.getItemStack().getItem() instanceof PickOnAStickItem)
      PickOnAStickItem pickOnAStickItem = (PickOnAStickItem) this.getItemStack().getItem();
      oxidationStage = pickOnAStickItem.oxidationStage;
    return !blockState.isStickyBlock() &&
        blockState.getPistonPushReaction() != PushReaction.PUSH_ONLY &&
        blockState.getBlock() != Blocks.TARGET &&
        blockHardness >= 0 &&
        blockHardness <= 2 - oxidationStage;


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30 minutes ago, olihewi said:


This doesn't work. There is only one instance of your item class, so ALL copies for ALL players will share the same oxidation stage. You need to use Capabilities.


32 minutes ago, olihewi said:

it is returning -1, which I expect to be the value for unbreakable blocks e.g. bedrock, so I was checking against that.

Hardness of -1 is unbreakable. Harvest Level of -1 means something else.

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