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
official	cnx
intermediary	net/minecraft/class_2288
named	net/minecraft/block/CommandBlock

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.OffsetType, AbstractBlock.Settings, AbstractBlock.TypedContextPredicate<A>

Field Summary

Fields

Modifier and Type	Field	Description
private final boolean	auto
static final BooleanProperty	CONDITIONAL
static final DirectionProperty	FACING
private static final Logger	LOGGER

Fields inherited from class net.minecraft.block.Block

field_31022, field_31023, field_31024, field_31025, field_31035, FORCE_STATE, MOVED, NO_REDRAW, NOTIFY_ALL, NOTIFY_LISTENERS, NOTIFY_NEIGHBORS, REDRAW_ON_MAIN_THREAD, SKIP_DROPS, SKIP_LIGHTING_UPDATES, STATE_IDS, stateManager

Fields inherited from class net.minecraft.block.AbstractBlock

collidable, DIRECTIONS, dynamicBounds, jumpVelocityMultiplier, lootTableId, material, 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(AbstractBlock.Settings settings, boolean auto)

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)
int	getComparatorOutput(BlockState state, World world, BlockPos pos)	Returns the comparator output of the block, from 0 to 15.
BlockState	getPlacementState(ItemPlacementContext ctx)
BlockRenderType	getRenderType(BlockState state)	Returns the block's render type (invisible, animated, model).
boolean	hasComparatorOutput(BlockState state)	Returns whether the block can have a comparator output.
BlockState	mirror(BlockState state, BlockMirror mirror)	Returns state mirrored by mirror.
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.
ActionResult	onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit)	Called when this block is used by a player.
BlockState	rotate(BlockState state, BlockRotation rotation)	Returns state rotated by rotation.
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

checkType, createScreenHandlerFactory, onSyncedBlockEvent

Methods inherited from class net.minecraft.block.Block

afterBreak, appendTooltip, asBlock, asItem, canMobSpawnInside, cannotConnect, createCuboidShape, dropExperience, dropExperienceWhenMined, dropStack, dropStack, dropStacks, dropStacks, dropStacks, dropStacks, getBlastResistance, getBlockFromItem, getDefaultState, getDroppedStacks, getDroppedStacks, getJumpVelocityMultiplier, getName, getPickStack, getRawIdFromState, getRegistryEntry, getShapesForStates, getSlipperiness, getSoundGroup, getStateFromRawId, getStateManager, getStateWithProperties, getTranslationKey, getVelocityMultiplier, hasDynamicBounds, hasRandomTicks, hasTopRim, isFaceFullSquare, isShapeFullCube, isTranslucent, 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, emitsRedstonePower, getAmbientOcclusionLightLevel, getCameraCollisionShape, getCollisionShape, getCullingShape, getDefaultMapColor, getDroppedStacks, getFluidState, getHardness, getLootTableId, getMaxHorizontalModelOffset, getOpacity, getOutlineShape, getPistonBehavior, getRaycastShape, getRenderingSeed, getRequiredFeatures, getSidesShape, getStateForNeighborUpdate, getStrongRedstonePower, getVerticalModelOffsetMultiplier, getWeakRedstonePower, hasSidedTransparency, isCullingShapeFullCube, isShapeFullCube, isSideInvisible, onBlockAdded, onBlockBreakStart, onEntityCollision, onProjectileHit, onStacksDropped, onStateReplaced, 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

LOGGER

private static final Logger LOGGER

Mappings:

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

FACING

public static final DirectionProperty FACING

Mappings:

Namespace	Name	Mixin selector
official	a	Lcnx;a:Lczn;
intermediary	field_10791	Lnet/minecraft/class_2288;field_10791:Lnet/minecraft/class_2753;
named	FACING	Lnet/minecraft/block/CommandBlock;FACING:Lnet/minecraft/state/property/DirectionProperty;

CONDITIONAL

public static final BooleanProperty CONDITIONAL

Mappings:

Namespace	Name	Mixin selector
official	b	Lcnx;b:Lczk;
intermediary	field_10793	Lnet/minecraft/class_2288;field_10793:Lnet/minecraft/class_2746;
named	CONDITIONAL	Lnet/minecraft/block/CommandBlock;CONDITIONAL:Lnet/minecraft/state/property/BooleanProperty;

auto

private final boolean auto

Mappings:

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

Constructor Details

CommandBlock

public CommandBlock(AbstractBlock.Settings settings,
 boolean auto)

Mappings:

Namespace	Name	Mixin selector
official	<init>	Lcnx;<init>(Lcys$c;Z)V
intermediary	<init>	Lnet/minecraft/class_2288;<init>(Lnet/minecraft/class_4970$class_2251;Z)V
named	<init>	Lnet/minecraft/block/CommandBlock;<init>(Lnet/minecraft/block/AbstractBlock$Settings;Z)V

Method Details

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

Mappings:

Namespace	Name	Mixin selector
official	a	Lcpe;a(Lgp;Lcyt;)Lcwl;
intermediary	method_10123	Lnet/minecraft/class_2343;method_10123(Lnet/minecraft/class_2338;Lnet/minecraft/class_2680;)Lnet/minecraft/class_2586;
named	createBlockEntity	Lnet/minecraft/block/BlockEntityProvider;createBlockEntity(Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/block/BlockState;)Lnet/minecraft/block/entity/BlockEntity;

neighborUpdate

public 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.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)
• World.isReceivingRedstonePower(net.minecraft.util.math.BlockPos)

Mappings:

Namespace	Name	Mixin selector
official	a	Lcys;a(Lcyt;Lcjw;Lgp;Lcmt;Lgp;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
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

scheduledTick

public 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). Additionally, AbstractBlock.randomTick(net.minecraft.block.BlockState, net.minecraft.server.world.ServerWorld, net.minecraft.util.math.BlockPos, net.minecraft.util.math.random.Random) by default calls this method; override AbstractBlock.randomTick(net.minecraft.block.BlockState, net.minecraft.server.world.ServerWorld, net.minecraft.util.math.BlockPos, net.minecraft.util.math.random.Random) to disable this behavior.

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:

• 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
official	a	Lcys;a(Lcyt;Lahm;Lgp;Laoh;)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
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

execute

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

Mappings:

Namespace	Name	Mixin selector
official	a	Lcnx;a(Lcyt;Lcjw;Lgp;Lcix;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
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

onUse

public ActionResult onUse(BlockState state,
 World world,
 BlockPos pos,
 PlayerEntity player,
 Hand hand,
 BlockHitResult hit)

Called when this block is used by a player. This, by default, is bound to using the right mouse button.

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().

If the action result is successful on a logical client, then the action will be sent to the logical server for processing.

Overrides:

onUse in class AbstractBlock

Returns:

an action result that specifies if using the block was successful.

Mappings:

Namespace	Name	Mixin selector
official	a	Lcys;a(Lcyt;Lcjw;Lgp;Lbwp;Lbcl;Leaa;)Lbcm;
intermediary	method_9534	Lnet/minecraft/class_4970;method_9534(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_1657;Lnet/minecraft/class_1268;Lnet/minecraft/class_3965;)Lnet/minecraft/class_1269;
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/Hand;Lnet/minecraft/util/hit/BlockHitResult;)Lnet/minecraft/util/ActionResult;

hasComparatorOutput

public 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 AbstractBlock.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.getComparatorOutput(net.minecraft.block.BlockState, net.minecraft.world.World, net.minecraft.util.math.BlockPos)

Mappings:

Namespace	Name	Mixin selector
official	d_	Lcys;d_(Lcyt;)Z
intermediary	method_9498	Lnet/minecraft/class_4970;method_9498(Lnet/minecraft/class_2680;)Z
named	hasComparatorOutput	Lnet/minecraft/block/AbstractBlock;hasComparatorOutput(Lnet/minecraft/block/BlockState;)Z

getComparatorOutput

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

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

When overriding this, AbstractBlock.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.hasComparatorOutput(net.minecraft.block.BlockState)

Mappings:

Namespace	Name	Mixin selector
official	a	Lcys;a(Lcyt;Lcjw;Lgp;)I
intermediary	method_9572	Lnet/minecraft/class_4970;method_9572(Lnet/minecraft/class_2680;Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;)I
named	getComparatorOutput	Lnet/minecraft/block/AbstractBlock;getComparatorOutput(Lnet/minecraft/block/BlockState;Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;)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
official	a	Lcmt;a(Lcjw;Lgp;Lcyt;Lbeg;Lcdt;)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
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

getRenderType

public 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)

Mappings:

Namespace	Name	Mixin selector
official	b_	Lcys;b_(Lcyt;)Lcss;
intermediary	method_9604	Lnet/minecraft/class_4970;method_9604(Lnet/minecraft/class_2680;)Lnet/minecraft/class_2464;
named	getRenderType	Lnet/minecraft/block/AbstractBlock;getRenderType(Lnet/minecraft/block/BlockState;)Lnet/minecraft/block/BlockRenderType;

rotate

public 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

Mappings:

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

mirror

public 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

Mappings:

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

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
official	a	Lcmt;a(Lcyu$a;)V
intermediary	method_9515	Lnet/minecraft/class_2248;method_9515(Lnet/minecraft/class_2689$class_2690;)V
named	appendProperties	Lnet/minecraft/block/Block;appendProperties(Lnet/minecraft/state/StateManager$Builder;)V

getPlacementState

public BlockState getPlacementState(ItemPlacementContext ctx)

Overrides:

getPlacementState in class Block

Mappings:

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

executeCommandChain

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

Mappings:

Namespace	Name	Mixin selector
official	a	Lcnx;a(Lcjw;Lgp;Lgv;)V
intermediary	method_9779	Lnet/minecraft/class_2288;method_9779(Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;Lnet/minecraft/class_2350;)V
named	executeCommandChain	Lnet/minecraft/block/CommandBlock;executeCommandChain(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/util/math/Direction;)V