使用自定义块边界渲染故障我的世界

Question

我正在为 Minecraft 创建一个模组。最近，我尝试制作一个自定义块，但遇到了两个问题。

我的主要问题是块渲染不正确。我希望该块的大小小于一个完整的块。我使用setBlockBounds() 成功更改了块边界，虽然 确实 使块渲染更小并使用更小的边界，但它会导致其他渲染问题。当我放置方块时，下面的地板变得不可见，我可以透过它看到下面的洞穴，它后面的方块，或者如果那里什么都没有的话。如何修复该块不渲染？截图如下：

此外，我对这个方块的目标是发出一种“光环”，让周围的玩家获得速度或其他药水效果。我有在街区周围寻找玩家并给予他们速度的基本代码，但我无法找到一种方法来在每个滴答声或每 X 个滴答声中激活此方法，以确保它以可靠的方式为框内的玩家提供速度.正常游戏中已经有一些方块可以做到这一点，所以它一定是可能的。我该怎么做？

Answer 1

对于您的第一个问题，您需要覆盖 isOpaqueCube 以返回 false。您还需要为代码的其他部分覆盖isFullCube，但这对于渲染并不重要。示例：

public class YourBlock {
    // ... existing code ...

    /**
     * Used to determine ambient occlusion and culling when rebuilding chunks for render
     */
    @Override
    public boolean isOpaqueCube(IBlockState state) {
        return false;
    }

    @Override
    public boolean isFullCube(IBlockState state) {
        return false;
    }
}

Here's some info on rendering that mentions this.

---

关于你的第二个问题，这更复杂。它通常是通过一个 tile 实体来实现的，尽管您也可以使用块更新（这要慢得多）。很好的例子是BlockBeacon 和TileEntityBeacon（用于使用图块实体）和BlockFrostedIce（用于块更新）。这是一些（可能已过时）info on tile entities。

这是一个（未经测试的）示例，每次使用磁贴实体勾选此更新：

public class YourBlock {
    // ... existing code ...

    /**
     * Returns a new instance of a block's tile entity class. Called on placing the block.
     */
    @Override
    public TileEntity createNewTileEntity(World worldIn, int meta) {
        return new TileEntityYourBlock();
    }
}

/**
 * Tile entity for your block.
 * 
 * Tile entities normally store data, but they can also receive an update each
 * tick, but to do so they must implement ITickable.  So, don't forget the
 * "implements ITickable".
 */
public class TileEntityYourBlock extends TileEntity implements ITickable {
    @Override
    public void update() {
        // Your code to give potion effects to nearby players would go here

        // If you only want to do it every so often, you can check like this:
        if (this.worldObj.getTotalWorldTime() % 80 == 0) {
            // Only runs every 80 ticks (4 seconds)
        }
    }

    // The following code isn't required to make a tile entity that gets ticked,
    // but you'll want it if you want (EG) to be able to set the effect.

    /**
     * Example potion effect.
     * May be null.
     */
    private Potion effect;

    public void setEffect(Potion potionEffect) {
        this.effect = potionEffect;
    }

    public Potion getEffect() {
        return this.effect;
    }

    @Override
    public void readFromNBT(NBTTagCompound compound) {
        super.readFromNBT(compound);
        int effectID = compound.getInteger("Effect")
        this.effect = Potion.getPotionById(effectID);
    }

    public void writeToNBT(NBTTagCompound compound) {
        super.writeToNBT(compound);
        int effectID = Potion.getIdFromPotion(this.effect);
        compound.setInteger("Effect", effectID);
    }
}

// This line needs to go in the main registration.
// The ID can be anything so long as it isn't used by another mod.
GameRegistry.registerTileEntity(TileEntityYourBlock.class, "YourBlock");