Minecraft 1.18.1、1.18.2模组开发 22.方块实体(BlockEntity)

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已于 2022-06-20 20:37:02 修改 · 2.7k 阅读

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#java #开发语言

于 2022-06-17 23:51:36 首次发布

本文详细介绍了如何在Minecraft 1.18版本中创建一个功能类似熔炉的VirusGenerator Block，包括方块实体的实现、配方设计、GUI界面制作及资源文件配置。跟随教程，你可以自制一个能处理物品的方块实体。

Minecraft1.12.2 方块实体教程

MC中有许多很有趣的方块实体如旗帜、钟、附魔台…我们今天在1.18的版本下实现一个类似于熔炉的方块实体。

1.在blocks包中新建一个我们的方块实体包virusgenerator，包中新建一个我们的方块类`VirusGeneratorBlock`：

VirusGeneratorBlock.java

package com.joy187.re8joymod.blocks.virusgenerator;

import net.minecraft.world.level.block.BaseEntityBlock;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.properties.BooleanProperty;
import net.minecraft.world.level.block.state.properties.DirectionProperty;
import net.minecraft.world.phys.shapes.VoxelShape;
import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.*;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.entity.BlockEntityTicker;
import net.minecraft.world.level.block.entity.BlockEntityType;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition;
import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraftforge.network.NetworkHooks;
import org.jetbrains.annotations.Nullable;

import com.joy187.re8joymod.init.BlockEntityInit;

public class VirusGeneratorBlock extends BaseEntityBlock {
    public static final DirectionProperty FACING = BlockStateProperties.HORIZONTAL_FACING;
    public static final BooleanProperty LIT = BlockStateProperties.LIT;

    public VirusGeneratorBlock(Properties properties) {
        super(properties);
        this.registerDefaultState(this.stateDefinition.any().setValue(FACING, Direction.NORTH).setValue(LIT, Boolean.valueOf(false)));
    }

    private static final VoxelShape SHAPE =  Block.box(0, 0, 0, 16, 15, 16);

    @Override
    public VoxelShape getShape(BlockState pState, BlockGetter pLevel, BlockPos pPos, CollisionContext pContext) {
        return SHAPE;
    }

    /* FACING */

    @Override
    public BlockState getStateForPlacement(BlockPlaceContext pContext) {
        return this.defaultBlockState().setValue(FACING, pContext.getHorizontalDirection().getOpposite());
    }

    @Override
    public BlockState rotate(BlockState pState, Rotation pRotation) {
        return pState.setValue(FACING, pRotation.rotate(pState.getValue(FACING)));
    }

    @Override
    public BlockState mirror(BlockState pState, Mirror pMirror) {
        return pState.rotate(pMirror.getRotation(pState.getValue(FACING)));
    }

    @Override
    protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> pBuilder) {
        pBuilder.add(FACING,LIT);
    }

    
    @Override
    public RenderShape getRenderShape(BlockState pState) {
        return RenderShape.MODEL;
    }

    @Override
    public void onRemove(BlockState pState, Level pLevel, BlockPos pPos, BlockState pNewState, boolean pIsMoving) {
        if (pState.getBlock() != pNewState.getBlock()) {
            BlockEntity blockEntity = pLevel.getBlockEntity(pPos);
            if (blockEntity instanceof VirusGeneratorBlockEntity) {
                ((VirusGeneratorBlockEntity) blockEntity).drops();
            }
        }
        super.onRemove(pState, pLevel, pPos, pNewState, pIsMoving);
    }

    @Override
    public InteractionResult use(BlockState pState, Level pLevel, BlockPos pPos,
                                 Player pPlayer, InteractionHand pHand, BlockHitResult pHit) {
        if (!pLevel.isClientSide()) {
            BlockEntity entity = pLevel.getBlockEntity(pPos);
            if(entity instanceof VirusGeneratorBlockEntity) {
                NetworkHooks.openGui(((ServerPlayer)pPlayer), (VirusGeneratorBlockEntity)entity, pPos);
            } else {
                throw new IllegalStateException("Our Container provider is missing!");
            }
        }

        return InteractionResult.sidedSuccess(pLevel.isClientSide());
    }

    @Nullable
    @Override
    public BlockEntity newBlockEntity(BlockPos pPos, BlockState pState) {
        return new VirusGeneratorBlockEntity(pPos, pState);
    }

    @Nullable
    @Override
    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(Level pLevel, BlockState pState, BlockEntityType<T> pBlockEntityType) {
        return createTickerHelper(pBlockEntityType, BlockEntityInit.VIRUS_GENERATOR_BLOCK_ENTITY.get(),
                VirusGeneratorBlockEntity::tick);
    }
    
}

在BlockInit中注册我们的方块：

    public static final RegistryObject<Block> VIRUS_GENERATOR_BLOCK = registerBlock("virus_generator",
            () -> new VirusGeneratorBlock(BlockBehaviour.Properties.copy(Blocks.IRON_BLOCK).noOcclusion()),
            Main.TUTORIAL_TAB);

2.在virusgenerator包中新建一个我们的实体类`VirusGeneratorBlockEntity`:

VirusGeneratorBlockEntity.java

package com.joy187.re8joymod.blocks.virusgenerator;


import net.minecraft.core.BlockPos;
import net.minecraft.core.Direction;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.TextComponent;
import net.minecraft.network.chat.TranslatableComponent;
import net.minecraft.world.Containers;
import net.minecraft.world.MenuProvider;
import net.minecraft.world.SimpleContainer;
import net.minecraft.world.entity.player.Inventory;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.inventory.AbstractContainerMenu;
import net.minecraft.world.inventory.ContainerData;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.item.alchemy.PotionUtils;
import net.minecraft.world.item.alchemy.Potions;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.AbstractFurnaceBlock;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.common.util.LazyOptional;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.IItemHandler;
import net.minecraftforge.items.ItemStackHandler;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import com.joy187.re8joymod.init.BlockEntityInit;
import com.joy187.re8joymod.init.ItemInit;
import com.joy187.re8joymod.screen.VirusGeneratorMenu;

import javax.annotation.Nonnull;
import java.util.Optional;
import java.util.Random;

public class VirusGeneratorBlockEntity extends BlockEntity implements MenuProvider {
	
	private BlockState blockState;

	   
    private final ItemStackHandler itemHandler = new ItemStackHandler(4) {
        @Override
        protected void onContentsChanged(int slot) {
            setChanged();
        }
    };

    private LazyOptional<IItemHandler> lazyItemHandler = LazyOptional.empty();

    protected final ContainerData data;
    private int progress = 0;
    //你熔炼一个物品所需要的时间刻tick
    private int maxProgress = 72;

    public VirusGeneratorBlockEntity(BlockPos pWorldPosition, BlockState pBlockState) {
        super(BlockEntityInit.VIRUS_GENERATOR_BLOCK_ENTITY.get(), pWorldPosition, pBlockState);
        this.data = new ContainerData(