220 lines
8.2 KiB
Java
220 lines
8.2 KiB
Java
package net.minecraft.world.level.block;
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import com.mojang.logging.LogUtils;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.MapCodec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import net.minecraft.core.BlockPos;
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import net.minecraft.core.Direction;
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import net.minecraft.core.component.DataComponents;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.util.RandomSource;
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import net.minecraft.util.StringUtil;
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import net.minecraft.world.InteractionResult;
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import net.minecraft.world.entity.LivingEntity;
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import net.minecraft.world.entity.player.Player;
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import net.minecraft.world.item.ItemStack;
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import net.minecraft.world.item.context.BlockPlaceContext;
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import net.minecraft.world.level.BaseCommandBlock;
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import net.minecraft.world.level.GameRules;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.level.block.entity.BlockEntity;
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import net.minecraft.world.level.block.entity.CommandBlockEntity;
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import net.minecraft.world.level.block.state.BlockBehaviour;
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import net.minecraft.world.level.block.state.BlockState;
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import net.minecraft.world.level.block.state.StateDefinition;
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import net.minecraft.world.level.block.state.properties.BlockStateProperties;
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import net.minecraft.world.level.block.state.properties.BooleanProperty;
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import net.minecraft.world.level.block.state.properties.EnumProperty;
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import net.minecraft.world.level.redstone.Orientation;
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import net.minecraft.world.phys.BlockHitResult;
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import org.jetbrains.annotations.Nullable;
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import org.slf4j.Logger;
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public class CommandBlock extends BaseEntityBlock implements GameMasterBlock {
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public static final MapCodec<CommandBlock> CODEC = RecordCodecBuilder.mapCodec(
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instance -> instance.group(Codec.BOOL.fieldOf("automatic").forGetter(commandBlock -> commandBlock.automatic), propertiesCodec())
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.apply(instance, CommandBlock::new)
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);
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private static final Logger LOGGER = LogUtils.getLogger();
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public static final EnumProperty<Direction> FACING = DirectionalBlock.FACING;
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public static final BooleanProperty CONDITIONAL = BlockStateProperties.CONDITIONAL;
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private final boolean automatic;
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@Override
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public MapCodec<CommandBlock> codec() {
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return CODEC;
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}
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public CommandBlock(boolean automatic, BlockBehaviour.Properties properties) {
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super(properties);
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this.registerDefaultState(this.stateDefinition.any().setValue(FACING, Direction.NORTH).setValue(CONDITIONAL, false));
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this.automatic = automatic;
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}
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@Override
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public BlockEntity newBlockEntity(BlockPos pos, BlockState state) {
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CommandBlockEntity commandBlockEntity = new CommandBlockEntity(pos, state);
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commandBlockEntity.setAutomatic(this.automatic);
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return commandBlockEntity;
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}
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@Override
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protected void neighborChanged(BlockState state, Level level, BlockPos pos, Block neighborBlock, @Nullable Orientation orientation, boolean movedByPiston) {
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if (!level.isClientSide) {
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if (level.getBlockEntity(pos) instanceof CommandBlockEntity commandBlockEntity) {
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this.setPoweredAndUpdate(level, pos, commandBlockEntity, level.hasNeighborSignal(pos));
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}
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}
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}
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private void setPoweredAndUpdate(Level level, BlockPos pos, CommandBlockEntity blockEntity, boolean powered) {
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boolean bl = blockEntity.isPowered();
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if (powered != bl) {
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blockEntity.setPowered(powered);
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if (powered) {
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if (blockEntity.isAutomatic() || blockEntity.getMode() == CommandBlockEntity.Mode.SEQUENCE) {
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return;
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}
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blockEntity.markConditionMet();
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level.scheduleTick(pos, this, 1);
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}
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}
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}
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@Override
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protected void tick(BlockState state, ServerLevel level, BlockPos pos, RandomSource random) {
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if (level.getBlockEntity(pos) instanceof CommandBlockEntity commandBlockEntity) {
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BaseCommandBlock baseCommandBlock = commandBlockEntity.getCommandBlock();
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boolean bl = !StringUtil.isNullOrEmpty(baseCommandBlock.getCommand());
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CommandBlockEntity.Mode mode = commandBlockEntity.getMode();
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boolean bl2 = commandBlockEntity.wasConditionMet();
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if (mode == CommandBlockEntity.Mode.AUTO) {
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commandBlockEntity.markConditionMet();
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if (bl2) {
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this.execute(state, level, pos, baseCommandBlock, bl);
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} else if (commandBlockEntity.isConditional()) {
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baseCommandBlock.setSuccessCount(0);
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}
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if (commandBlockEntity.isPowered() || commandBlockEntity.isAutomatic()) {
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level.scheduleTick(pos, this, 1);
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}
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} else if (mode == CommandBlockEntity.Mode.REDSTONE) {
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if (bl2) {
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this.execute(state, level, pos, baseCommandBlock, bl);
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} else if (commandBlockEntity.isConditional()) {
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baseCommandBlock.setSuccessCount(0);
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}
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}
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level.updateNeighbourForOutputSignal(pos, this);
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}
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}
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private void execute(BlockState state, ServerLevel level, BlockPos pos, BaseCommandBlock logic, boolean canTrigger) {
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if (canTrigger) {
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logic.performCommand(level);
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} else {
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logic.setSuccessCount(0);
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}
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executeChain(level, pos, state.getValue(FACING));
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}
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@Override
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protected InteractionResult useWithoutItem(BlockState state, Level level, BlockPos pos, Player player, BlockHitResult hitResult) {
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BlockEntity blockEntity = level.getBlockEntity(pos);
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if (blockEntity instanceof CommandBlockEntity && player.canUseGameMasterBlocks()) {
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player.openCommandBlock((CommandBlockEntity)blockEntity);
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return InteractionResult.SUCCESS;
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} else {
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return InteractionResult.PASS;
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}
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}
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@Override
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protected boolean hasAnalogOutputSignal(BlockState state) {
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return true;
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}
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@Override
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protected int getAnalogOutputSignal(BlockState state, Level level, BlockPos pos) {
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BlockEntity blockEntity = level.getBlockEntity(pos);
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return blockEntity instanceof CommandBlockEntity ? ((CommandBlockEntity)blockEntity).getCommandBlock().getSuccessCount() : 0;
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}
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@Override
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public void setPlacedBy(Level level, BlockPos pos, BlockState state, LivingEntity placer, ItemStack stack) {
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if (level.getBlockEntity(pos) instanceof CommandBlockEntity commandBlockEntity) {
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BaseCommandBlock baseCommandBlock = commandBlockEntity.getCommandBlock();
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if (level instanceof ServerLevel serverLevel) {
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if (!stack.has(DataComponents.BLOCK_ENTITY_DATA)) {
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baseCommandBlock.setTrackOutput(serverLevel.getGameRules().getBoolean(GameRules.RULE_SENDCOMMANDFEEDBACK));
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commandBlockEntity.setAutomatic(this.automatic);
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}
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boolean bl = level.hasNeighborSignal(pos);
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this.setPoweredAndUpdate(level, pos, commandBlockEntity, bl);
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}
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}
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}
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@Override
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protected BlockState rotate(BlockState state, Rotation rotation) {
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return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
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}
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@Override
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protected BlockState mirror(BlockState state, Mirror mirror) {
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return state.rotate(mirror.getRotation(state.getValue(FACING)));
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}
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@Override
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protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
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builder.add(FACING, CONDITIONAL);
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}
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@Override
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public BlockState getStateForPlacement(BlockPlaceContext context) {
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return this.defaultBlockState().setValue(FACING, context.getNearestLookingDirection().getOpposite());
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}
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private static void executeChain(ServerLevel level, BlockPos pos, Direction direction) {
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BlockPos.MutableBlockPos mutableBlockPos = pos.mutable();
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GameRules gameRules = level.getGameRules();
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int i = gameRules.getInt(GameRules.RULE_MAX_COMMAND_CHAIN_LENGTH);
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while (i-- > 0) {
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mutableBlockPos.move(direction);
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BlockState blockState = level.getBlockState(mutableBlockPos);
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Block block = blockState.getBlock();
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if (!blockState.is(Blocks.CHAIN_COMMAND_BLOCK)
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|| !(level.getBlockEntity(mutableBlockPos) instanceof CommandBlockEntity commandBlockEntity)
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|| commandBlockEntity.getMode() != CommandBlockEntity.Mode.SEQUENCE) {
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break;
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}
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if (commandBlockEntity.isPowered() || commandBlockEntity.isAutomatic()) {
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BaseCommandBlock baseCommandBlock = commandBlockEntity.getCommandBlock();
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if (commandBlockEntity.markConditionMet()) {
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if (!baseCommandBlock.performCommand(level)) {
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break;
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}
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level.updateNeighbourForOutputSignal(mutableBlockPos, block);
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} else if (commandBlockEntity.isConditional()) {
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baseCommandBlock.setSuccessCount(0);
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}
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}
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direction = blockState.getValue(FACING);
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}
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if (i <= 0) {
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int j = Math.max(gameRules.getInt(GameRules.RULE_MAX_COMMAND_CHAIN_LENGTH), 0);
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LOGGER.warn("Command Block chain tried to execute more than {} steps!", j);
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}
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}
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}
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