Struct Instance 

pub struct Instance {
    pub chunks: ChunkStorage,
    pub entities_by_chunk: HashMap<ChunkPos, HashSet<Entity>>,
    pub entity_by_id: IntMap<MinecraftEntityId, Entity>,
    pub registries: RegistryHolder,
}

A world where the chunks are stored as weak pointers. This is used for shared worlds.

Also see PartialInstance.

This is sometimes interchangeably called a “world”. However, this type is called Instance to avoid colliding with the World type from Bevy ECS.

Fields

chunks: ChunkStorage

entities_by_chunk: HashMap<ChunkPos, HashSet<Entity>>

An index of all the entities we know are in the chunks of the world

entity_by_id: IntMap<MinecraftEntityId, Entity>

An index of Minecraft entity IDs to Azalea ECS entities.

You should avoid using this (particularly if you’re using swarms) and instead use azalea_entity::EntityIdIndex, since some servers may give different entity IDs for the same entities to different players.

registries: RegistryHolder

Implementations

impl Instance

pub fn find_block( &self, nearest_to: impl Into<BlockPos>, block_states: &BlockStates, ) -> Option<BlockPos>

Find the coordinates of a block in the world.

Note that this is sorted by x+y+z and not x^2+y^2+z^2 for performance purposes.

client
    .world()
    .read()
    .find_block(client.position(), &BlockKind::Chest.into());

pub fn find_blocks<'a>( &'a self, nearest_to: impl Into<BlockPos>, block_states: &'a BlockStates, ) -> FindBlocks<'a>

Find all the coordinates of a block in the world.

This returns an iterator that yields the [BlockPos]s of blocks that are in the given block states.

Note that this is sorted by x+y+z and not x^2+y^2+z^2 for performance purposes.

Examples found in repository

azalea/examples/steal.rs (line 58)

async fn steal(bot: Client, state: State) -> anyhow::Result<()> {
    {
        let mut is_stealing = state.is_stealing.lock();
        if *is_stealing {
            bot.chat("Already stealing");
            return Ok(());
        }
        *is_stealing = true;
    }

    state.checked_chests.lock().clear();

    loop {
        let chest_block = bot
            .world()
            .read()
            .find_blocks(bot.position(), &BlockKind::Chest.into())
            .find(
                // find the closest chest that hasn't been checked
                |block_pos| !state.checked_chests.lock().contains(block_pos),
            );
        let Some(chest_block) = chest_block else {
            break;
        };

        state.checked_chests.lock().push(chest_block);

        bot.goto(RadiusGoal::new(chest_block.center(), 3.)).await;

        let Some(chest) = bot.open_container_at(chest_block).await else {
            println!("Couldn't open chest at {chest_block:?}");
            continue;
        };

        println!("Getting contents of chest at {chest_block:?}");
        for (index, slot) in chest.contents().unwrap_or_default().iter().enumerate() {
            println!("Checking slot {index}: {slot:?}");
            let ItemStack::Present(item) = slot else {
                continue;
            };
            if item.kind == ItemKind::Diamond {
                println!("clicking slot ^");
                chest.click(QuickMoveClick::Left { slot: index as u16 });
            }
        }
    }

    bot.chat("Done");

    *state.is_stealing.lock() = false;

    Ok(())
}

impl Instance

pub fn get_block_state(&self, pos: BlockPos) -> Option<BlockState>

Get the block at the given position, or None if it’s outside of the world that we have loaded.

Examples found in repository

azalea/examples/testbot/commands/debug.rs (line 121)

pub fn register(commands: &mut CommandDispatcher<Mutex<CommandSource>>) {
    commands.register(literal("ping").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply("pong!");
        1
    }));

    commands.register(literal("disconnect").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.disconnect();
        1
    }));

    commands.register(literal("whereami").executes(|ctx: &Ctx| {
        let mut source = ctx.source.lock();
        let Some(entity) = source.entity() else {
            source.reply("You aren't in render distance!");
            return 0;
        };
        let position = source.bot.entity_component::<Position>(entity);
        source.reply(format!(
            "You are at {}, {}, {}",
            position.x, position.y, position.z
        ));
        1
    }));

    commands.register(literal("entityid").executes(|ctx: &Ctx| {
        let mut source = ctx.source.lock();
        let Some(entity) = source.entity() else {
            source.reply("You aren't in render distance!");
            return 0;
        };
        let entity_id = source.bot.entity_component::<MinecraftEntityId>(entity);
        source.reply(format!(
            "Your Minecraft ID is {} and your ECS ID is {entity:?}",
            *entity_id
        ));
        1
    }));

    let whereareyou = |ctx: &Ctx| {
        let source = ctx.source.lock();
        let position = source.bot.position();
        source.reply(format!(
            "I'm at {}, {}, {}",
            position.x, position.y, position.z
        ));
        1
    };
    commands.register(literal("whereareyou").executes(whereareyou));
    commands.register(literal("pos").executes(whereareyou));

    commands.register(literal("whoareyou").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply(format!(
            "I am {} ({}, {})",
            source.bot.username(),
            source.bot.uuid(),
            source.bot.entity
        ));
        1
    }));

    commands.register(literal("getdirection").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let direction = source.bot.component::<LookDirection>();
        source.reply(format!(
            "I'm looking at {}, {}",
            direction.y_rot(),
            direction.x_rot()
        ));
        1
    }));

    commands.register(literal("health").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        let health = source.bot.health();
        source.reply(format!("I have {health} health"));
        1
    }));

    commands.register(literal("lookingat").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        let hit_result = source.bot.component::<HitResultComponent>();

        match &*hit_result {
            HitResult::Block(r) => {
                if r.miss {
                    source.reply("I'm not looking at anything");
                    return 0;
                }
                let block_pos = r.block_pos;
                let block = source.bot.world().read().get_block_state(block_pos);
                source.reply(format!("I'm looking at {block:?} at {block_pos:?}"));
            }
            HitResult::Entity(r) => {
                let entity_kind = *source.bot.entity_component::<EntityKindComponent>(r.entity);
                source.reply(format!(
                    "I'm looking at {entity_kind} ({:?}) at {}",
                    r.entity, r.location
                ));
            }
        }

        1
    }));

    commands.register(literal("getblock").then(argument("x", integer()).then(
        argument("y", integer()).then(argument("z", integer()).executes(|ctx: &Ctx| {
            let source = ctx.source.lock();
            let x = get_integer(ctx, "x").unwrap();
            let y = get_integer(ctx, "y").unwrap();
            let z = get_integer(ctx, "z").unwrap();
            println!("getblock xyz {x} {y} {z}");
            let block_pos = BlockPos::new(x, y, z);
            let block = source.bot.world().read().get_block_state(block_pos);
            source.reply(format!("BlockKind at {block_pos} is {block:?}"));
            1
        })),
    )));
    commands.register(literal("getfluid").then(argument("x", integer()).then(
        argument("y", integer()).then(argument("z", integer()).executes(|ctx: &Ctx| {
            let source = ctx.source.lock();
            let x = get_integer(ctx, "x").unwrap();
            let y = get_integer(ctx, "y").unwrap();
            let z = get_integer(ctx, "z").unwrap();
            println!("getfluid xyz {x} {y} {z}");
            let block_pos = BlockPos::new(x, y, z);
            let block = source.bot.world().read().get_fluid_state(block_pos);
            source.reply(format!("Fluid at {block_pos} is {block:?}"));
            1
        })),
    )));

    commands.register(literal("pathfinderstate").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let pathfinder = source.bot.get_component::<Pathfinder>();
        let Some(pathfinder) = pathfinder else {
            source.reply("I don't have the Pathfinder ocmponent");
            return 1;
        };
        source.reply(format!(
            "pathfinder.is_calculating: {}",
            pathfinder.is_calculating
        ));

        let executing_path = source.bot.get_component::<ExecutingPath>();
        let Some(executing_path) = executing_path else {
            source.reply("I'm not executing a path");
            return 1;
        };
        source.reply(format!(
            "is_path_partial: {}, path.len: {}, queued_path.len: {}",
            executing_path.is_path_partial,
            executing_path.path.len(),
            if let Some(queued) = executing_path.queued_path {
                queued.len().to_string()
            } else {
                "n/a".to_owned()
            },
        ));
        1
    }));

    commands.register(literal("startuseitem").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.start_use_item();
        source.reply("Ok!");
        1
    }));
    commands.register(literal("maxstacksize").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let max_stack_size = source
            .bot
            .get_held_item()
            .get_component::<MaxStackSize>()
            .map_or(-1, |s| s.count);
        source.reply(format!("{max_stack_size}"));
        1
    }));

    commands.register(literal("dimensions").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let bot_dimensions = source.bot.dimensions();
        source.reply(format!("{bot_dimensions:?}"));
        1
    }));

    commands.register(literal("players").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let player_entities = source
            .bot
            .nearest_entities_by::<(), With<metadata::Player>>(|_: ()| true);
        let tab_list = source.bot.tab_list();
        for player_entity in player_entities {
            let uuid = source.bot.entity_component::<EntityUuid>(player_entity);
            source.reply(format!(
                "{} - {} ({:?})",
                player_entity,
                tab_list.get(&uuid).map_or("?", |p| p.profile.name.as_str()),
                uuid
            ));
        }
        1
    }));

    commands.register(literal("enchants").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.with_registry_holder(|r| {
            let enchants = &r.enchantment;
            println!("enchants: {enchants:?}");
        });
        1
    }));

    commands.register(literal("attributes").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let attributes = source.bot.component::<Attributes>();
        println!("attributes: {attributes:?}");
        1
    }));

    commands.register(literal("debugecsleak").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        source.reply("Ok!");



        source.bot.disconnect();

        let ecs = source.bot.ecs.clone();
        thread::spawn(move || {
            thread::sleep(Duration::from_secs(1));
            // dump the ecs

            let mut ecs = ecs.lock();



            let report_path = env::temp_dir().join("azalea-ecs-leak-report.txt");
            let mut report = File::create(&report_path).unwrap();

            let mut query = ecs.query::<EntityRef>();
            for entity in query.iter(& ecs) {
                writeln!(report, "Entity: {}", entity.id()).unwrap();
                let archetype = entity.archetype();
                let component_count = archetype.component_count();

                let component_names = archetype
                    .components()
                    .iter()
                    .map(|c| ecs.components().get_info(*c).unwrap().name().to_string())
                    .collect::<Vec<_>>();
                writeln!(
                    report,
                    "- {component_count} components: {}",
                    component_names.join(", ")
                )
                .unwrap();
            }

            writeln!(report).unwrap();


            for (info, _) in ecs.iter_resources() {
                let name = info.name().to_string();
                writeln!(report, "Resource: {name}").unwrap();
                // writeln!(report, "- Size: {} bytes",
                // info.layout().size()).unwrap();

                match name.as_ref() {
                    "azalea_world::container::InstanceContainer" => {
                        let instance_container = ecs.resource::<InstanceContainer>();

                        for (instance_name, instance) in &instance_container.instances {
                            writeln!(report, "- Name: {instance_name}").unwrap();
                            writeln!(report, "- Reference count: {}", instance.strong_count())
                                .unwrap();
                            if let Some(instance) = instance.upgrade() {
                                let instance = instance.read();
                                let strong_chunks = instance
                                    .chunks
                                    .map
                                    .iter()
                                    .filter(|(_, v)| v.strong_count() > 0)
                                    .count();
                                writeln!(
                                    report,
                                    "- Chunks: {} strongly referenced, {} in map",
                                    strong_chunks,
                                    instance.chunks.map.len()
                                )
                                .unwrap();
                                writeln!(
                                    report,
                                    "- Entities: {}",
                                    instance.entities_by_chunk.len()
                                )
                                .unwrap();
                            }
                        }
                    }
                    "bevy_ecs::message::Messages<azalea_client::packet::game::ReceivePacketEvent>" => {
                        let events = ecs.resource::<Messages<game::ReceiveGamePacketEvent>>();
                        writeln!(report, "- Event count: {}", events.len()).unwrap();
                    }
                    "bevy_ecs::message::Messages<azalea_client::chunks::ReceiveChunkEvent>" => {
                        let events = ecs.resource::<Messages<ReceiveChunkEvent>>();
                        writeln!(report, "- Event count: {}", events.len()).unwrap();
                    }

                    _ => {}
                }
            }

            println!("\x1b[1mWrote report to {}\x1b[m", report_path.display());
        });

        1
    }));

    commands.register(literal("exit").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply("bye!");

        source.bot.disconnect();

        let source = ctx.source.clone();
        thread::spawn(move || {
            thread::sleep(Duration::from_secs(1));

            source.lock().bot.ecs.lock().write_message(AppExit::Success);
        });

        1
    }));
}

pub fn get_fluid_state(&self, pos: BlockPos) -> Option<FluidState>

Similar to Self::get_block_state, but returns data about the fluid at the position, including for waterlogged blocks.

Examples found in repository

azalea/examples/testbot/commands/debug.rs (line 157)

pub fn register(commands: &mut CommandDispatcher<Mutex<CommandSource>>) {
    commands.register(literal("ping").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply("pong!");
        1
    }));

    commands.register(literal("disconnect").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.disconnect();
        1
    }));

    commands.register(literal("whereami").executes(|ctx: &Ctx| {
        let mut source = ctx.source.lock();
        let Some(entity) = source.entity() else {
            source.reply("You aren't in render distance!");
            return 0;
        };
        let position = source.bot.entity_component::<Position>(entity);
        source.reply(format!(
            "You are at {}, {}, {}",
            position.x, position.y, position.z
        ));
        1
    }));

    commands.register(literal("entityid").executes(|ctx: &Ctx| {
        let mut source = ctx.source.lock();
        let Some(entity) = source.entity() else {
            source.reply("You aren't in render distance!");
            return 0;
        };
        let entity_id = source.bot.entity_component::<MinecraftEntityId>(entity);
        source.reply(format!(
            "Your Minecraft ID is {} and your ECS ID is {entity:?}",
            *entity_id
        ));
        1
    }));

    let whereareyou = |ctx: &Ctx| {
        let source = ctx.source.lock();
        let position = source.bot.position();
        source.reply(format!(
            "I'm at {}, {}, {}",
            position.x, position.y, position.z
        ));
        1
    };
    commands.register(literal("whereareyou").executes(whereareyou));
    commands.register(literal("pos").executes(whereareyou));

    commands.register(literal("whoareyou").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply(format!(
            "I am {} ({}, {})",
            source.bot.username(),
            source.bot.uuid(),
            source.bot.entity
        ));
        1
    }));

    commands.register(literal("getdirection").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let direction = source.bot.component::<LookDirection>();
        source.reply(format!(
            "I'm looking at {}, {}",
            direction.y_rot(),
            direction.x_rot()
        ));
        1
    }));

    commands.register(literal("health").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        let health = source.bot.health();
        source.reply(format!("I have {health} health"));
        1
    }));

    commands.register(literal("lookingat").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        let hit_result = source.bot.component::<HitResultComponent>();

        match &*hit_result {
            HitResult::Block(r) => {
                if r.miss {
                    source.reply("I'm not looking at anything");
                    return 0;
                }
                let block_pos = r.block_pos;
                let block = source.bot.world().read().get_block_state(block_pos);
                source.reply(format!("I'm looking at {block:?} at {block_pos:?}"));
            }
            HitResult::Entity(r) => {
                let entity_kind = *source.bot.entity_component::<EntityKindComponent>(r.entity);
                source.reply(format!(
                    "I'm looking at {entity_kind} ({:?}) at {}",
                    r.entity, r.location
                ));
            }
        }

        1
    }));

    commands.register(literal("getblock").then(argument("x", integer()).then(
        argument("y", integer()).then(argument("z", integer()).executes(|ctx: &Ctx| {
            let source = ctx.source.lock();
            let x = get_integer(ctx, "x").unwrap();
            let y = get_integer(ctx, "y").unwrap();
            let z = get_integer(ctx, "z").unwrap();
            println!("getblock xyz {x} {y} {z}");
            let block_pos = BlockPos::new(x, y, z);
            let block = source.bot.world().read().get_block_state(block_pos);
            source.reply(format!("BlockKind at {block_pos} is {block:?}"));
            1
        })),
    )));
    commands.register(literal("getfluid").then(argument("x", integer()).then(
        argument("y", integer()).then(argument("z", integer()).executes(|ctx: &Ctx| {
            let source = ctx.source.lock();
            let x = get_integer(ctx, "x").unwrap();
            let y = get_integer(ctx, "y").unwrap();
            let z = get_integer(ctx, "z").unwrap();
            println!("getfluid xyz {x} {y} {z}");
            let block_pos = BlockPos::new(x, y, z);
            let block = source.bot.world().read().get_fluid_state(block_pos);
            source.reply(format!("Fluid at {block_pos} is {block:?}"));
            1
        })),
    )));

    commands.register(literal("pathfinderstate").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let pathfinder = source.bot.get_component::<Pathfinder>();
        let Some(pathfinder) = pathfinder else {
            source.reply("I don't have the Pathfinder ocmponent");
            return 1;
        };
        source.reply(format!(
            "pathfinder.is_calculating: {}",
            pathfinder.is_calculating
        ));

        let executing_path = source.bot.get_component::<ExecutingPath>();
        let Some(executing_path) = executing_path else {
            source.reply("I'm not executing a path");
            return 1;
        };
        source.reply(format!(
            "is_path_partial: {}, path.len: {}, queued_path.len: {}",
            executing_path.is_path_partial,
            executing_path.path.len(),
            if let Some(queued) = executing_path.queued_path {
                queued.len().to_string()
            } else {
                "n/a".to_owned()
            },
        ));
        1
    }));

    commands.register(literal("startuseitem").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.start_use_item();
        source.reply("Ok!");
        1
    }));
    commands.register(literal("maxstacksize").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let max_stack_size = source
            .bot
            .get_held_item()
            .get_component::<MaxStackSize>()
            .map_or(-1, |s| s.count);
        source.reply(format!("{max_stack_size}"));
        1
    }));

    commands.register(literal("dimensions").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let bot_dimensions = source.bot.dimensions();
        source.reply(format!("{bot_dimensions:?}"));
        1
    }));

    commands.register(literal("players").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let player_entities = source
            .bot
            .nearest_entities_by::<(), With<metadata::Player>>(|_: ()| true);
        let tab_list = source.bot.tab_list();
        for player_entity in player_entities {
            let uuid = source.bot.entity_component::<EntityUuid>(player_entity);
            source.reply(format!(
                "{} - {} ({:?})",
                player_entity,
                tab_list.get(&uuid).map_or("?", |p| p.profile.name.as_str()),
                uuid
            ));
        }
        1
    }));

    commands.register(literal("enchants").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.bot.with_registry_holder(|r| {
            let enchants = &r.enchantment;
            println!("enchants: {enchants:?}");
        });
        1
    }));

    commands.register(literal("attributes").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        let attributes = source.bot.component::<Attributes>();
        println!("attributes: {attributes:?}");
        1
    }));

    commands.register(literal("debugecsleak").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();

        source.reply("Ok!");



        source.bot.disconnect();

        let ecs = source.bot.ecs.clone();
        thread::spawn(move || {
            thread::sleep(Duration::from_secs(1));
            // dump the ecs

            let mut ecs = ecs.lock();



            let report_path = env::temp_dir().join("azalea-ecs-leak-report.txt");
            let mut report = File::create(&report_path).unwrap();

            let mut query = ecs.query::<EntityRef>();
            for entity in query.iter(& ecs) {
                writeln!(report, "Entity: {}", entity.id()).unwrap();
                let archetype = entity.archetype();
                let component_count = archetype.component_count();

                let component_names = archetype
                    .components()
                    .iter()
                    .map(|c| ecs.components().get_info(*c).unwrap().name().to_string())
                    .collect::<Vec<_>>();
                writeln!(
                    report,
                    "- {component_count} components: {}",
                    component_names.join(", ")
                )
                .unwrap();
            }

            writeln!(report).unwrap();


            for (info, _) in ecs.iter_resources() {
                let name = info.name().to_string();
                writeln!(report, "Resource: {name}").unwrap();
                // writeln!(report, "- Size: {} bytes",
                // info.layout().size()).unwrap();

                match name.as_ref() {
                    "azalea_world::container::InstanceContainer" => {
                        let instance_container = ecs.resource::<InstanceContainer>();

                        for (instance_name, instance) in &instance_container.instances {
                            writeln!(report, "- Name: {instance_name}").unwrap();
                            writeln!(report, "- Reference count: {}", instance.strong_count())
                                .unwrap();
                            if let Some(instance) = instance.upgrade() {
                                let instance = instance.read();
                                let strong_chunks = instance
                                    .chunks
                                    .map
                                    .iter()
                                    .filter(|(_, v)| v.strong_count() > 0)
                                    .count();
                                writeln!(
                                    report,
                                    "- Chunks: {} strongly referenced, {} in map",
                                    strong_chunks,
                                    instance.chunks.map.len()
                                )
                                .unwrap();
                                writeln!(
                                    report,
                                    "- Entities: {}",
                                    instance.entities_by_chunk.len()
                                )
                                .unwrap();
                            }
                        }
                    }
                    "bevy_ecs::message::Messages<azalea_client::packet::game::ReceivePacketEvent>" => {
                        let events = ecs.resource::<Messages<game::ReceiveGamePacketEvent>>();
                        writeln!(report, "- Event count: {}", events.len()).unwrap();
                    }
                    "bevy_ecs::message::Messages<azalea_client::chunks::ReceiveChunkEvent>" => {
                        let events = ecs.resource::<Messages<ReceiveChunkEvent>>();
                        writeln!(report, "- Event count: {}", events.len()).unwrap();
                    }

                    _ => {}
                }
            }

            println!("\x1b[1mWrote report to {}\x1b[m", report_path.display());
        });

        1
    }));

    commands.register(literal("exit").executes(|ctx: &Ctx| {
        let source = ctx.source.lock();
        source.reply("bye!");

        source.bot.disconnect();

        let source = ctx.source.clone();
        thread::spawn(move || {
            thread::sleep(Duration::from_secs(1));

            source.lock().bot.ecs.lock().write_message(AppExit::Success);
        });

        1
    }));
}

pub fn get_biome(&self, pos: BlockPos) -> Option<Biome>

Get the biome at the given position.

You can then use Client::with_resolved_registry to get the name and data from the biome.

Note that biomes are internally stored as 4x4x4 blocks, so if you’re writing code that searches for a specific biome it’ll probably be more efficient to avoid scanning every single block.

pub fn set_block_state( &self, pos: BlockPos, state: BlockState, ) -> Option<BlockState>

Trait Implementations

impl Debug for Instance

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Instance

fn default() -> Instance

Returns the “default value” for a type.

impl From<ChunkStorage> for Instance

fn from(chunks: ChunkStorage) -> Self

Make an empty world from this ChunkStorage. This is meant to be a convenience function for tests.