Package net.minecraft.block

Class CommandBlock

java.lang.Object

net.minecraft.block.AbstractBlock

net.minecraft.block.Block

net.minecraft.block.BlockWithEntity

net.minecraft.block.CommandBlock

All Implemented Interfaces:

BlockEntityProvider, OperatorBlock, ItemConvertible, ToggleableFeature

public class CommandBlock
extends BlockWithEntity
implements OperatorBlock

Mappings:

Namespace	Name
named	net/minecraft/block/CommandBlock
intermediary	net/minecraft/class_2288
official	dhh

Nested Class Summary

Nested classes/interfaces inherited from class net.minecraft.block.Block

Block.NeighborGroup

Nested classes/interfaces inherited from class net.minecraft.block.AbstractBlock

AbstractBlock.AbstractBlockState, AbstractBlock.ContextPredicate, AbstractBlock.Offsetter, AbstractBlock.OffsetType, AbstractBlock.Settings, AbstractBlock.TypedContextPredicate<A>

Field Summary

Fields

Modifier and Type	Field	Description
private final boolean	auto
static final com.mojang.serialization.MapCodec<CommandBlock>	CODEC
static final BooleanProperty	CONDITIONAL
static final DirectionProperty	FACING
private static final Logger	LOGGER

Fields inherited from class net.minecraft.block.Block

field_31023, field_31024, field_31025, field_31035, FORCE_STATE, MOVED, NO_REDRAW, NOTIFY_ALL, NOTIFY_ALL_AND_REDRAW, NOTIFY_LISTENERS, NOTIFY_NEIGHBORS, REDRAW_ON_MAIN_THREAD, SKIP_DROPS, STATE_IDS, stateManager

Fields inherited from class net.minecraft.block.AbstractBlock

collidable, DIRECTIONS, dynamicBounds, jumpVelocityMultiplier, lootTableKey, randomTicks, requiredFeatures, resistance, settings, slipperiness, soundGroup, velocityMultiplier

Fields inherited from interface net.minecraft.resource.featuretoggle.ToggleableFeature

FEATURE_ENABLED_REGISTRY_KEYS

Constructor Summary

Constructors

Constructor	Description
CommandBlock(boolean auto, AbstractBlock.Settings settings)

Method Summary

Modifier and Type	Method	Description
protected void	appendProperties(StateManager.Builder<Block,BlockState> builder)	Appends block state properties to this block.
BlockEntity	createBlockEntity(BlockPos pos, BlockState state)	Returns a new block entity instance.
private void	execute(BlockState state, World world, BlockPos pos, CommandBlockExecutor executor, boolean hasCommand)
private static void	executeCommandChain(World world, BlockPos pos, Direction facing)
com.mojang.serialization.MapCodec<CommandBlock>	getCodec()
protected int	getComparatorOutput(BlockState state, World world, BlockPos pos)	Returns the comparator output of the block, from 0 to 15.
BlockState	getPlacementState(ItemPlacementContext ctx)
protected BlockRenderType	getRenderType(BlockState state)	Returns the block's render type (invisible, animated, model).
protected boolean	hasComparatorOutput(BlockState state)	Returns whether the block can have a comparator output.
protected BlockState	mirror(BlockState state, BlockMirror mirror)	Returns state mirrored by mirror.
protected void	neighborUpdate(BlockState state, World world, BlockPos pos, Block sourceBlock, BlockPos sourcePos, boolean notify)	Called when a neighboring block is updated.
void	onPlaced(World world, BlockPos pos, BlockState state, LivingEntity placer, ItemStack itemStack)	Called when the player placed the block.
protected ActionResult	onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, BlockHitResult hit)
protected BlockState	rotate(BlockState state, BlockRotation rotation)	Returns state rotated by rotation.
protected void	scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random random)	Called server-side when a block receives a scheduled tick.

Methods inherited from class net.minecraft.block.BlockWithEntity

createScreenHandlerFactory, onSyncedBlockEvent, validateTicker

Methods inherited from class net.minecraft.block.Block

afterBreak, appendTooltip, asBlock, asItem, canMobSpawnInside, cannotConnect, createCuboidShape, dropExperience, dropExperienceWhenMined, dropStack, dropStack, dropStacks, dropStacks, dropStacks, getBlastResistance, getBlockFromItem, getDefaultState, getDroppedStacks, getDroppedStacks, getJumpVelocityMultiplier, getName, getPickStack, getRawIdFromState, getRegistryEntry, getShapesForStates, getSlipperiness, getStateFromRawId, getStateManager, getStateWithProperties, getTranslationKey, getVelocityMultiplier, hasDynamicBounds, hasTopRim, isFaceFullSquare, isShapeFullCube, onBreak, onBroken, onDestroyedByExplosion, onEntityLand, onLandedUpon, onSteppedOn, postProcessState, precipitationTick, pushEntitiesUpBeforeBlockChange, randomDisplayTick, replace, replace, setDefaultState, shouldDrawSide, shouldDropItemsOnExplosion, sideCoversSmallSquare, spawnBreakParticles, toString

Methods inherited from class net.minecraft.block.AbstractBlock

calcBlockBreakingDelta, canBucketPlace, canPathfindThrough, canPlaceAt, canReplace, createCodec, createSettingsCodec, emitsRedstonePower, getAmbientOcclusionLightLevel, getCameraCollisionShape, getCollisionShape, getCullingShape, getDefaultMapColor, getDroppedStacks, getFluidState, getHardness, getLootTableKey, getMaxHorizontalModelOffset, getOpacity, getOutlineShape, getRaycastShape, getRenderingSeed, getRequiredFeatures, getSettings, getSidesShape, getSoundGroup, getStateForNeighborUpdate, getStrongRedstonePower, getVerticalModelOffsetMultiplier, getWeakRedstonePower, hasRandomTicks, hasSidedTransparency, isCullingShapeFullCube, isShapeFullCube, isSideInvisible, isTransparent, onBlockAdded, onBlockBreakStart, onEntityCollision, onExploded, onProjectileHit, onStacksDropped, onStateReplaced, onUseWithItem, prepare, randomTick

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.minecraft.block.BlockEntityProvider

getGameEventListener, getTicker

Methods inherited from interface net.minecraft.resource.featuretoggle.ToggleableFeature

isEnabled

Field Details

CODEC

public static final com.mojang.serialization.MapCodec<CommandBlock> CODEC

Mappings:

Namespace	Name	Mixin selector
named	CODEC	Lnet/minecraft/block/CommandBlock;CODEC:Lcom/mojang/serialization/MapCodec;
intermediary	field_46318	Lnet/minecraft/class_2288;field_46318:Lcom/mojang/serialization/MapCodec;
official	a	Ldhh;a:Lcom/mojang/serialization/MapCodec;

LOGGER

private static final Logger LOGGER

Mappings:

Namespace	Name	Mixin selector
named	LOGGER	Lnet/minecraft/block/CommandBlock;LOGGER:Lorg/slf4j/Logger;
intermediary	field_10792	Lnet/minecraft/class_2288;field_10792:Lorg/slf4j/Logger;
official	d	Ldhh;d:Lorg/slf4j/Logger;

FACING

public static final DirectionProperty FACING

Mappings:

Namespace	Name	Mixin selector
named	FACING	Lnet/minecraft/block/CommandBlock;FACING:Lnet/minecraft/state/property/DirectionProperty;
intermediary	field_10791	Lnet/minecraft/class_2288;field_10791:Lnet/minecraft/class_2753;
official	b	Ldhh;b:Ldtw;

CONDITIONAL

public static final BooleanProperty CONDITIONAL

Mappings:

Namespace	Name	Mixin selector
named	CONDITIONAL	Lnet/minecraft/block/CommandBlock;CONDITIONAL:Lnet/minecraft/state/property/BooleanProperty;
intermediary	field_10793	Lnet/minecraft/class_2288;field_10793:Lnet/minecraft/class_2746;
official	c	Ldhh;c:Ldtt;

auto

private final boolean auto

Mappings:

Namespace	Name	Mixin selector
named	auto	Lnet/minecraft/block/CommandBlock;auto:Z
intermediary	field_27192	Lnet/minecraft/class_2288;field_27192:Z
official	e	Ldhh;e:Z

Constructor Details

CommandBlock

public CommandBlock(boolean auto,
 AbstractBlock.Settings settings)

Mappings:

Namespace	Name	Mixin selector
named	<init>	Lnet/minecraft/block/CommandBlock;<init>(ZLnet/minecraft/block/AbstractBlock$Settings;)V
intermediary	<init>	Lnet/minecraft/class_2288;<init>(ZLnet/minecraft/class_4970$class_2251;)V
official	<init>	Ldhh;<init>(ZLdtb$d;)V

Method Details

getCodec

public com.mojang.serialization.MapCodec<CommandBlock> getCodec()

Specified by:

getCodec in class BlockWithEntity

Mappings:

Namespace	Name	Mixin selector
named	getCodec	Lnet/minecraft/block/AbstractBlock;getCodec()Lcom/mojang/serialization/MapCodec;
intermediary	method_53969	Lnet/minecraft/class_4970;method_53969()Lcom/mojang/serialization/MapCodec;
official	a	Ldtb;a()Lcom/mojang/serialization/MapCodec;

createBlockEntity

public BlockEntity createBlockEntity(BlockPos pos,
 BlockState state)

Returns a new block entity instance.

For example:

 @Override
 public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
   return new MyBlockEntity(pos, state);
 }
 

Specified by:

createBlockEntity in interface BlockEntityProvider

Returns:

a new block entity instance

Implementation Note:

While this is marked as nullable, in practice this should never return null. PistonExtensionBlock is the only block in vanilla that returns null inside the implementation.

Mappings:

Namespace	Name	Mixin selector
named	createBlockEntity	Lnet/minecraft/block/BlockEntityProvider;createBlockEntity(Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/block/BlockState;)Lnet/minecraft/block/entity/BlockEntity;
intermediary	method_10123	Lnet/minecraft/class_2343;method_10123(Lnet/minecraft/class_2338;Lnet/minecraft/class_2680;)Lnet/minecraft/class_2586;
official	a	Ldiq;a(Ljd;Ldtc;)Ldqh;

neighborUpdate

protected void neighborUpdate(BlockState state,
 World world,
 BlockPos pos,
 Block sourceBlock,
 BlockPos sourcePos,
 boolean notify)

Called when a neighboring block is updated. This method should be overridden to perform an action with a side effect, most notably an activation of a redstone component. This can also be used to perform an action changing block states of other blocks, such as SpongeBlock which absorbs water.

To replace the state of the block itself, override AbstractBlock.getStateForNeighborUpdate(net.minecraft.block.BlockState, net.minecraft.util.math.Direction, net.minecraft.block.BlockState, net.minecraft.world.WorldAccess, net.minecraft.util.math.BlockPos, net.minecraft.util.math.BlockPos) instead.

This method is called on both the logical client and logical server, so take caution when overriding this method. The logical side can be checked using World.isClient.

Overrides:

neighborUpdate in class AbstractBlock

See Also:

• AbstractBlock.AbstractBlockState.neighborUpdate(net.minecraft.world.World, net.minecraft.util.math.BlockPos, net.minecraft.block.Block, net.minecraft.util.math.BlockPos, boolean)
• AbstractBlock.getStateForNeighborUpdate(net.minecraft.block.BlockState, net.minecraft.util.math.Direction, net.minecraft.block.BlockState, net.minecraft.world.WorldAccess, net.minecraft.util.math.BlockPos, net.minecraft.util.math.BlockPos)
• RedstoneView.isReceivingRedstonePower(net.minecraft.util.math.BlockPos)

Mappings:

Namespace	Name	Mixin selector
named	neighborUpdate	Lnet/minecraft/block/AbstractBlock;neighborUpdate(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/block/Block;Lnet/minecraft/util/math/BlockPos;Z)V
intermediary	method_9612	Lnet/minecraft/class_4970;method_9612(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_2248;Lnet/minecraft/class_2338;Z)V
official	a	Ldtb;a(Ldtc;Ldcw;Ljd;Ldfy;Ljd;Z)V

scheduledTick

protected void scheduledTick(BlockState state,
 ServerWorld world,
 BlockPos pos,
 Random random)

Called server-side when a block receives a scheduled tick. This can be used like a timer. Scheduled ticks are added using WorldAccess.scheduleBlockTick(BlockPos, Block, int).

Scheduled ticks are often used inside AbstractBlock.getStateForNeighborUpdate(net.minecraft.block.BlockState, net.minecraft.util.math.Direction, net.minecraft.block.BlockState, net.minecraft.world.WorldAccess, net.minecraft.util.math.BlockPos, net.minecraft.util.math.BlockPos).

Here are some examples:

• SugarCaneBlock checks the placement requirement.
• DispenserBlock dispenses its content.
• CommandBlock executes its command.
• FrogspawnBlock spawns a tadpole.
• SoulSandBlock updates a bubble column.
• FallingBlock tries to fall.

Overrides:

scheduledTick in class AbstractBlock

See Also:

• AbstractBlock.AbstractBlockState.scheduledTick(net.minecraft.server.world.ServerWorld, net.minecraft.util.math.BlockPos, net.minecraft.util.math.random.Random)
• WorldAccess.scheduleBlockTick(BlockPos, Block, int)
• AbstractBlock.getStateForNeighborUpdate(net.minecraft.block.BlockState, net.minecraft.util.math.Direction, net.minecraft.block.BlockState, net.minecraft.world.WorldAccess, net.minecraft.util.math.BlockPos, net.minecraft.util.math.BlockPos)
• AbstractBlock.randomTick(net.minecraft.block.BlockState, net.minecraft.server.world.ServerWorld, net.minecraft.util.math.BlockPos, net.minecraft.util.math.random.Random)

Mappings:

Namespace	Name	Mixin selector
named	scheduledTick	Lnet/minecraft/block/AbstractBlock;scheduledTick(Lnet/minecraft/block/BlockState;Lnet/minecraft/server/world/ServerWorld;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/random/Random;)V
intermediary	method_9588	Lnet/minecraft/class_4970;method_9588(Lnet/minecraft/class_2680;Lnet/minecraft/class_3218;Lnet/minecraft/class_2338;Lnet/minecraft/class_5819;)V
official	a	Ldtb;a(Ldtc;Laqu;Ljd;Layw;)V

execute

private void execute(BlockState state,
 World world,
 BlockPos pos,
 CommandBlockExecutor executor,
 boolean hasCommand)

Mappings:

Namespace	Name	Mixin selector
named	execute	Lnet/minecraft/block/CommandBlock;execute(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/world/CommandBlockExecutor;Z)V
intermediary	method_9780	Lnet/minecraft/class_2288;method_9780(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_1918;Z)V
official	a	Ldhh;a(Ldtc;Ldcw;Ljd;Ldbx;Z)V

onUse

protected ActionResult onUse(BlockState state,
 World world,
 BlockPos pos,
 PlayerEntity player,
 BlockHitResult hit)

Overrides:

onUse in class AbstractBlock

Mappings:

Namespace	Name	Mixin selector
named	onUse	Lnet/minecraft/block/AbstractBlock;onUse(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/entity/player/PlayerEntity;Lnet/minecraft/util/hit/BlockHitResult;)Lnet/minecraft/util/ActionResult;
intermediary	method_55766	Lnet/minecraft/class_4970;method_55766(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_1657;Lnet/minecraft/class_3965;)Lnet/minecraft/class_1269;
official	a	Ldtb;a(Ldtc;Ldcw;Ljd;Lcmx;Lewy;)Lbqr;

hasComparatorOutput

protected boolean hasComparatorOutput(BlockState state)

Returns whether the block can have a comparator output.

This does not check the current comparator output of the block. Use getComparatorOutput(net.minecraft.block.BlockState, net.minecraft.world.World, net.minecraft.util.math.BlockPos) in that case.

Overrides:

hasComparatorOutput in class AbstractBlock

Returns:

whether the block can have a comparator output

See Also:

• AbstractBlock.AbstractBlockState.hasComparatorOutput()
• getComparatorOutput(net.minecraft.block.BlockState, net.minecraft.world.World, net.minecraft.util.math.BlockPos)

Mappings:

Namespace	Name	Mixin selector
named	hasComparatorOutput	Lnet/minecraft/block/AbstractBlock;hasComparatorOutput(Lnet/minecraft/block/BlockState;)Z
intermediary	method_9498	Lnet/minecraft/class_4970;method_9498(Lnet/minecraft/class_2680;)Z
official	c_	Ldtb;c_(Ldtc;)Z

getComparatorOutput

protected int getComparatorOutput(BlockState state,
 World world,
 BlockPos pos)

Returns the comparator output of the block, from 0 to 15.

When overriding this, hasComparatorOutput(net.minecraft.block.BlockState) must also be overridden.

Overrides:

getComparatorOutput in class AbstractBlock

Returns:

the comparator output of the block, from 0 to 15

See Also:

• AbstractBlock.AbstractBlockState.getComparatorOutput(net.minecraft.world.World, net.minecraft.util.math.BlockPos)
• hasComparatorOutput(net.minecraft.block.BlockState)

Mappings:

Namespace	Name	Mixin selector
named	getComparatorOutput	Lnet/minecraft/block/AbstractBlock;getComparatorOutput(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;)I
intermediary	method_9572	Lnet/minecraft/class_4970;method_9572(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;)I
official	a	Ldtb;a(Ldtc;Ldcw;Ljd;)I

onPlaced

public void onPlaced(World world,
 BlockPos pos,
 BlockState state,
 LivingEntity placer,
 ItemStack itemStack)

Called when the player placed the block.

Tall or wide blocks (such as doors or beds) should override this to place the other half of the block. Blocks with block entities can use this to copy the data from the item stack, such as the custom name.

This method is called on both the logical client and logical server, so take caution when overriding this method. The logical side can be checked using World.isClient.

Overrides:

onPlaced in class Block

See Also:

• AbstractBlock.onBlockAdded(net.minecraft.block.BlockState, net.minecraft.world.World, net.minecraft.util.math.BlockPos, net.minecraft.block.BlockState, boolean)

Mappings:

Namespace	Name	Mixin selector
named	onPlaced	Lnet/minecraft/block/Block;onPlaced(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/block/BlockState;Lnet/minecraft/entity/LivingEntity;Lnet/minecraft/item/ItemStack;)V
intermediary	method_9567	Lnet/minecraft/class_2248;method_9567(Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_2680;Lnet/minecraft/class_1309;Lnet/minecraft/class_1799;)V
official	a	Ldfy;a(Ldcw;Ljd;Ldtc;Lbtn;Lcuq;)V

getRenderType

protected BlockRenderType getRenderType(BlockState state)

Returns the block's render type (invisible, animated, model).

Overrides:

getRenderType in class BlockWithEntity

Returns:

the block's render type (invisible, animated, model)

See Also:

• AbstractBlock.AbstractBlockState.getRenderType()

API Note:

BlockWithEntity overrides this to return BlockRenderType.INVISIBLE; therefore, custom blocks extending that class must override it again to render the block.

Mappings:

Namespace	Name	Mixin selector
named	getRenderType	Lnet/minecraft/block/AbstractBlock;getRenderType(Lnet/minecraft/block/BlockState;)Lnet/minecraft/block/BlockRenderType;
intermediary	method_9604	Lnet/minecraft/class_4970;method_9604(Lnet/minecraft/class_2680;)Lnet/minecraft/class_2464;
official	a_	Ldtb;a_(Ldtc;)Ldmf;

rotate

protected BlockState rotate(BlockState state,
 BlockRotation rotation)

Returns state rotated by rotation.

By default, this returns the provided block state.

Overrides:

rotate in class AbstractBlock

Returns:

state rotated by rotation

See Also:

• AbstractBlock.AbstractBlockState.rotate(net.minecraft.util.BlockRotation)

Mappings:

Namespace	Name	Mixin selector
named	rotate	Lnet/minecraft/block/AbstractBlock;rotate(Lnet/minecraft/block/BlockState;Lnet/minecraft/util/BlockRotation;)Lnet/minecraft/block/BlockState;
intermediary	method_9598	Lnet/minecraft/class_4970;method_9598(Lnet/minecraft/class_2680;Lnet/minecraft/class_2470;)Lnet/minecraft/class_2680;
official	a	Ldtb;a(Ldtc;Ldmm;)Ldtc;

mirror

protected BlockState mirror(BlockState state,
 BlockMirror mirror)

Returns state mirrored by mirror.

By default, this returns the provided block state.

Overrides:

mirror in class AbstractBlock

Returns:

state mirrored by mirror

See Also:

• AbstractBlock.AbstractBlockState.mirror(net.minecraft.util.BlockMirror)

Mappings:

Namespace	Name	Mixin selector
named	mirror	Lnet/minecraft/block/AbstractBlock;mirror(Lnet/minecraft/block/BlockState;Lnet/minecraft/util/BlockMirror;)Lnet/minecraft/block/BlockState;
intermediary	method_9569	Lnet/minecraft/class_4970;method_9569(Lnet/minecraft/class_2680;Lnet/minecraft/class_2415;)Lnet/minecraft/class_2680;
official	a	Ldtb;a(Ldtc;Ldkv;)Ldtc;

appendProperties

protected void appendProperties(StateManager.Builder<Block,BlockState> builder)

Appends block state properties to this block. To use this, override and call StateManager.Builder.add(net.minecraft.state.property.Property<?>[]) inside the method. See Properties for the list of pre-defined properties.

Overrides:

appendProperties in class Block

Mappings:

Namespace	Name	Mixin selector
named	appendProperties	Lnet/minecraft/block/Block;appendProperties(Lnet/minecraft/state/StateManager$Builder;)V
intermediary	method_9515	Lnet/minecraft/class_2248;method_9515(Lnet/minecraft/class_2689$class_2690;)V
official	a	Ldfy;a(Ldtd$a;)V

getPlacementState

public BlockState getPlacementState(ItemPlacementContext ctx)

Overrides:

getPlacementState in class Block

Mappings:

Namespace	Name	Mixin selector
named	getPlacementState	Lnet/minecraft/block/Block;getPlacementState(Lnet/minecraft/item/ItemPlacementContext;)Lnet/minecraft/block/BlockState;
intermediary	method_9605	Lnet/minecraft/class_2248;method_9605(Lnet/minecraft/class_1750;)Lnet/minecraft/class_2680;
official	a	Ldfy;a(Lcyd;)Ldtc;

executeCommandChain

private static void executeCommandChain(World world,
 BlockPos pos,
 Direction facing)

Mappings:

Namespace	Name	Mixin selector
named	executeCommandChain	Lnet/minecraft/block/CommandBlock;executeCommandChain(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/Direction;)V
intermediary	method_9779	Lnet/minecraft/class_2288;method_9779(Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_2350;)V
official	a	Ldhh;a(Ldcw;Ljd;Lji;)V