[Bug] The Laser Beam Spell Can Break Blocks When It Shouldn't Be Able To

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Introduction

In the world of Minecraft modding, bugs can be a significant hindrance to the smooth operation of a mod. One such bug has been identified in the Laser Beam spell, which can break blocks both inside vanilla spawn protection and outside the vanilla worldborder. This article aims to provide a detailed explanation of the issue, its causes, and potential solutions.

The Problem

The Laser Beam spell, and possibly other ray attack spells, can break blocks in areas where they should not be able to. This includes both inside vanilla spawn protection and outside the vanilla worldborder. The issue is not limited to these areas, and it can occur in various other situations where blocks should be protected.

Causes of the Issue

The root cause of this issue lies in the lack of checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method. These methods are responsible for restricting worldborder and spawn protection, respectively. The vanilla implementation of these methods can be found in ServerPlayerGameMode::handleBlockBreakAction().

Understanding the Code

To better understand the issue, let's take a closer look at the relevant code. The RayAttack::onFirstHit() method is responsible for handling the first hit of the ray attack. This method is called when the ray attack hits a block for the first time. The method checks if the block can be broken and if the player has the necessary permissions to break it.

However, the method does not check if the block is inside vanilla spawn protection or outside the vanilla worldborder. This is where the issue arises. The method should check if the block is inside these protected areas and prevent the block from being broken if it is.

Potential Solutions

To fix this issue, we need to add checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method. We can do this by calling these methods and checking their return values. If the block is inside vanilla spawn protection or outside the vanilla worldborder, we should prevent the block from being broken.

Here is an example of how we can modify the RayAttack::onFirstHit() method to fix this issue:

public void onFirstHit(Level level, RayAttackEntity entity, BlockHitResult result) {
    // Check if the block is inside vanilla spawn protection
    if (level.mayInteract(entity, result.getHitBlock())) {
        // Check if the block is outside the vanilla worldborder
        if (entity.blockActionRestricted(result.getHitBlock())) {
            // Prevent the block from being broken
            return;
        }
    }

    // Check if the player has the necessary permissions to break the block
    if (entity.hasPermissionToBreak(result.getHitBlock())) {
        // Break the block
        level.destroyBlock(result.getHitBlock(), true);
    }
}

Conclusion

In conclusion, the Laser Beam spell can break blocks when it shouldn't be able to due to a lack of checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method. To fix this issue, we need to add checks to these methods and prevent the block from being broken if it is inside vanilla spawn protection or outside the vanilla worldborder. By following the steps outlined in this article, we can fix this issue and ensure that the Laser Beam spell operates as intended.

Additional Information

  • The Laser Beam spell is a ray attack spell that can break blocks.
  • The issue can occur both inside vanilla spawn protection and outside the vanilla worldborder.
  • The root cause of the issue lies in the lack of checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method.
  • The vanilla implementation of these methods can be found in ServerPlayerGameMode::handleBlockBreakAction().
  • To fix this issue, we need to add checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method.

References

Frequently Asked Questions

Q: What is the Laser Beam spell?

A: The Laser Beam spell is a ray attack spell that can break blocks.

Q: Why can the Laser Beam spell break blocks when it shouldn't be able to?

A: The Laser Beam spell can break blocks when it shouldn't be able to due to a lack of checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method.

Q: What are Level::mayInteract() and Player::blockActionRestricted()?

A: Level::mayInteract() and Player::blockActionRestricted() are methods that check if a block can be interacted with and if a player's block action is restricted, respectively.

Q: Why are these methods important?

A: These methods are important because they restrict worldborder and spawn protection, respectively. If a block is inside vanilla spawn protection or outside the vanilla worldborder, these methods should prevent the block from being broken.

Q: How can I fix this issue?

A: To fix this issue, you need to add checks to Level::mayInteract() and Player::blockActionRestricted() in the RayAttack::onFirstHit() method. You can do this by calling these methods and checking their return values. If the block is inside vanilla spawn protection or outside the vanilla worldborder, you should prevent the block from being broken.

Q: What is the vanilla implementation of Level::mayInteract() and Player::blockActionRestricted()?

A: The vanilla implementation of these methods can be found in ServerPlayerGameMode::handleBlockBreakAction().

Q: Can this issue occur in other situations?

A: Yes, this issue can occur in other situations where blocks should be protected. It is not limited to inside vanilla spawn protection and outside the vanilla worldborder.

Q: How can I prevent this issue from occurring in the future?

A: To prevent this issue from occurring in the future, you should always check if a block is inside vanilla spawn protection or outside the vanilla worldborder before breaking it. You can do this by calling Level::mayInteract() and Player::blockActionRestricted() and checking their return values.

Q: What are the consequences of not fixing this issue?

A: If this issue is not fixed, it can cause blocks to be broken in areas where they should not be able to. This can lead to a range of problems, including:

  • Blocks being broken in protected areas
  • Players being able to break blocks that they should not be able to
  • The game becoming unstable or crashing

Q: How can I get help if I am experiencing this issue?

A: If you are experiencing this issue, you can try the following:

  • Check the Eternal Starlight GitHub repository for updates and fixes
  • Search online for solutions and workarounds
  • Reach out to the Eternal Starlight community for help and support
  • Contact the Eternal Starlight developers for assistance

Additional Resources