What are the opcodes in SPacketEntityStatus

[Yamahari]

Hi, I am trying to make my custom AI task for pigs that works similiary to the EntityAIEatGrass task of sheeps so I am just copying code from there. But I don't want to copy code I don't understand so what does

this.entityWorld.setEntityState(this.grassEaterEntity, (byte)10);

do? What is the opcode 10? 

[desht]

setEntityState() sends out a SPacketEntityStatus to tracking clients - the magic byte is handled in NetHandlerPlayClient#handleEntityStatus() for a couple of values, otherwise forwarded to Entity#handleStatusUpdate(), which is a method overridden many times by subclasses of Entity.

 

The opcode 10 appears to be handled by EntitySheep, setting the entity's (clientside) grass eating timer to 40 ticks.  I haven't done an exhaustive search, but I doubt any other vanilla entity subclasses use it.  It looks like it just controls the sheep's head animation as it leans down to eat.

Edited May 30, 2019 by desht

[Yamahari]

49 minutes ago, desht said:

setEntityState() sends out a SPacketEntityStatus to tracking clients - the magic byte is handled in NetHandlerPlayClient#handleEntityStatus() for a couple of values, otherwise forwarded to Entity#handleStatusUpdate(), which is a method overridden many times by subclasses of Entity.

 

The opcode 10 appears to be handled by EntitySheep, setting the entity's (clientside) grass eating timer to 40 ticks.  I haven't done an exhaustive search, but I doubt any other vanilla entity subclasses use it.  It looks like it just controls the sheep's head animation as it leans down to eat.

ah, so there's no point in calling this in my AI task that is attached to a EntityPig

public class EntityAIMakeSoil extends EntityAIBase {
    private final EntityLiving soilMakerEntity;

    private final World entityWorld;

    private int makingSoilTimer;

    public EntityAIMakeSoil(EntityLiving soilMakerEntity) {
        this.soilMakerEntity = soilMakerEntity;
        this.entityWorld = soilMakerEntity.world;
        this.setMutexBits(7);
    }

    @Override
    public boolean shouldExecute() {
        if(this.soilMakerEntity.getRNG().nextInt(this.soilMakerEntity.isChild() ? 100 : 200) == 0) {
            Block block = this.entityWorld.getBlockState(this.soilMakerEntity.getPosition().down()).getBlock();
            return block == Blocks.GRASS_BLOCK
                    || block == Blocks.DIRT
                    || block == BlockList.dry_farmland
                    || block == Blocks.COARSE_DIRT;
        }
        return false;
    }

    @Override
    public void startExecuting() {
        this.makingSoilTimer = 40;
        this.entityWorld.setEntityState(this.soilMakerEntity, (byte)10);
        this.soilMakerEntity.getNavigator().clearPath();
    }

    @Override
    public void resetTask() {
        this.makingSoilTimer = 0;
    }

    @Override
    public boolean shouldContinueExecuting() {
        return this.makingSoilTimer > 0;
    }

    public int getMakingSoilTimer() {
        return this.makingSoilTimer;
    }

    @Override
    public void tick() {
        this.makingSoilTimer = Math.max(0, this.makingSoilTimer - 1);
        if(this.makingSoilTimer == 4) {
            BlockPos pos = new BlockPos(this.soilMakerEntity).down();
            IBlockState blockState = this.entityWorld.getBlockState(pos);

            if(ForgeEventFactory.getMobGriefingEvent(this.entityWorld, this.soilMakerEntity)) {
                if(blockState.getBlock() == Blocks.GRASS_BLOCK || blockState.getBlock() == Blocks.DIRT) {
                    this.entityWorld.playEvent(Constants.WorldEvents.BREAK_BLOCK_EFFECTS, pos, Block.getStateId(blockState.getBlock().getDefaultState()));
                    this.entityWorld.setBlockState(pos, BlockList.dry_farmland.getDefaultState(), Constants.BlockFlags.NOTIFY_LISTENERS);
                }
                else if(blockState.getBlock() == Blocks.COARSE_DIRT) {
                    this.entityWorld.playEvent(Constants.WorldEvents.BREAK_BLOCK_EFFECTS, pos, Block.getStateId(blockState.getBlock().getDefaultState()));
                    this.entityWorld.setBlockState(pos, Blocks.DIRT.getDefaultState(), Constants.BlockFlags.NOTIFY_LISTENERS);
                }
                else if(blockState.getBlock() == BlockList.dry_farmland && !blockState.get(((BlockDryFarmland) blockState.getBlock()).getNutrition())) {
                    this.entityWorld.playEvent(Constants.WorldEvents.BREAK_BLOCK_EFFECTS, pos, Block.getStateId(blockState.getBlock().getDefaultState()));
                    this.entityWorld.setBlockState(pos,
                            BlockList.dry_farmland.getDefaultState()
                                    .with(((BlockDryFarmland) blockState.getBlock()).getNutrition(), Boolean.valueOf(true))
                                    .with(BlockStateProperties.MOISTURE_0_7, blockState.get(BlockStateProperties.MOISTURE_0_7)), Constants.BlockFlags.NOTIFY_LISTENERS);
                }
            }
        }
    }
}

 

[desht]

Yeah, it'll just get ignored by the client.