Precise Interaction

import { Direction } from "@minecraft/server";

const isInRange = (value, min, max) => value >= min && value <= max;

export default class FaceSelectionPlains {
    /**
     * Allows you to define 2D areas on a block's face and get the selected plain.
     *
     * @param {Object[]} plains Spread array defining the 2D areas on a block's face which may be selected.
     * @param {[number, number]} plains[].origin [U, V] array defining the offset of the plain from the top left of the block face in pixels.
     * @param {[number, number]} plains[].size [U, V] array defining the size of the plain, extending from the top left in pixels.
     * @param {string} [plains[].name] Custom name to easily identify this plain when it is selected.
     */
    constructor(...plains) {
        this.plains = plains;
    }
    /**
     * @param {Object} selection
     * @param {Direction} selection.face
     * @param {import("@minecraft/server").Vector3} selection.faceLocation
     *
     * @param {Object} [options]
     * @param {boolean} [options.invertU] Horizontal axis extends `right -> left` rather than `left -> right` if true.
     * @param {boolean} [options.invertV] Vertical axis extends `bottom -> top` rather than `top -> bottom` if true.
     *
     * @returns Selected plain ID, or plain index if an ID is not provided. If no plains apply to the selection, `undefined` is returned.
     */
    getSelected(selection, options) {
        const { face, faceLocation } = selection;

        // Create a new object so the original is not mutated
        let location = { ...faceLocation };

        const horizontalAxis = face === Direction.East || face === Direction.West ? "z" : "x";
        const verticalAxis = face === Direction.Up || face === Direction.Down ? "z" : "y";

        if (face !== Direction.Down) location[verticalAxis] = 1 - location[verticalAxis];
        if (face !== Direction.South && face !== Direction.West)
            location[horizontalAxis] = 1 - location[horizontalAxis];

        if (options?.invertU) location[horizontalAxis] = 1 - location[horizontalAxis];
        if (options?.invertV) location[verticalAxis] = 1 - location[verticalAxis];

        for (let i = 0; i < this.plains.length; i++) {
            const plain = this.plains[i];

            const inHorizontalRange = isInRange(
                location[horizontalAxis],
                plain.origin[0] / 16,
                (plain.origin[0] + plain.size[0]) / 16
            );
            const inVerticalRange = isInRange(
                location[verticalAxis],
                plain.origin[1] / 16,
                (plain.origin[1] + plain.size[1]) / 16
            );

            if (inHorizontalRange && inVerticalRange) return plain.name ?? i;
        }
    }
}

const isInRange = (value, min, max) => value >= min && value <= max;

export default class SelectionBoxes {
    /**
     * Allows you to define 3D areas in a block and get the box which the face selection lies within.
     *
     * @param {Object[]} boxes Array defining the 3D areas within a block which may be selected.
     * @param {[number, number, number]} boxes[].origin [X, Y, Z] array defining the offset of the box from the block's horizontal middle and vertical bottom in pixels, extending from the north-east.
     * @param {[number, number, number]} boxes[].size [X, Y, Z] array defining the size of the box in pixels, extending from the north-east.
     * @param {string} [boxes[].name] Custom name to easily identify this box when it is selected.
     */
    constructor(...boxes) {
        this.boxes = boxes;
    }
    /**
     * Get the box which the `faceLocation` lies within.
     *
     * @param {import("@minecraft/server").Vector3} faceLocation Selection location relative to the bottom north-west corner of the block.
     *
     * @param {Object} [options] Optionally configure how the selected box is calculated.
     * @param {boolean} [options.invertX] X axis extends `west -> east` rather than `east -> west` if true, following [Blockbench](https://blockbench.net)'s displayed positions.
     * @param {boolean} [options.invertY] Y axis extends `up -> down` rather than `down -> up` if true.
     * @param {boolean} [options.invertZ] Z axis extends `south -> north` rather than `north -> south` if true.
     *
     * @returns {(string|number|undefined)} Selected box name, or box index if a name is not provided. If no boxes apply to the selection, `undefined` is returned.
     */
    getSelected(faceLocation, options) {
        // Create a new object so the original is not mutated
        let location = { ...faceLocation };

        // X is inverted to ensure measurements are relative to the bottom north-east.
        if (!options?.invertX) location.x = 1 - location.x;
        if (options?.invertY) location.y = 1 - location.y;
        if (options?.invertZ) location.z = 1 - location.z;

        for (let i = 0; i < this.boxes.length; i++) {
            const box = this.boxes[i];

            const from = {
                x: box.origin[0] + 8,
                y: box.origin[1],
                z: box.origin[2] + 8,
            };
            const to = {
                x: from.x + box.size[0],
                y: from.y + box.size[1],
                z: from.z + box.size[2],
            };

            const inXRange = isInRange(location.x, from.x / 16, to.x / 16);
            const inYRange = isInRange(location.y, from.y / 16, to.y / 16);
            const inZRange = isInRange(location.z, from.z / 16, to.z / 16);

            if (inXRange && inYRange && inZRange) return box.name ?? i;
        }
    }
}

import { world, EquipmentSlot, GameMode, ItemStack } from "@minecraft/server";
import FaceSelectionPlains from "../utilities/face_selection_plains"; // Import the FaceSelectionPlains class to use it

// Slot bounds
const slots = new FaceSelectionPlains(
    { origin: [0, 0], size: [6, 8] },
    { origin: [6, 0], size: [5, 8] },
    { origin: [11, 0], size: [5, 8] },
    { origin: [0, 8], size: [6, 8] },
    { origin: [6, 8], size: [5, 8] },
    { origin: [11, 8], size: [5, 8] }
);

const isFrontFace = (block, face) =>
    block.permutation.getState("minecraft:cardinal_direction") === face.toLowerCase();

const isSlotOccupied = (block, slot) => block.permutation.getState(`wiki:slot_${slot}_occupied`);

const occupySlot = (block, slot) =>
    block.setPermutation(block.permutation.withState(`wiki:slot_${slot}_occupied`, true));

const emptySlot = (block, slot) =>
    block.setPermutation(block.permutation.withState(`wiki:slot_${slot}_occupied`, false));

function handleInteract({ block, face, faceLocation, dimension, player }) {
    if (!player || !isFrontFace(block, face)) return;

    const equippable = player.getComponent("minecraft:equippable");
    if (!equippable) return;

    const relativeFaceLocation = {
        x: faceLocation.x - block.location.x,
        y: faceLocation.y - block.location.y,
        z: faceLocation.z - block.location.z,
    };

    const selectedSlot = slots.getSelected({ face, faceLocation: relativeFaceLocation });
    if (selectedSlot === undefined) return;

    const mainhand = equippable.getEquipmentSlot(EquipmentSlot.Mainhand);
    const isHoldingPaper = mainhand.hasItem() && mainhand.typeId === "minecraft:paper";

    if (isHoldingPaper && !isSlotOccupied(block, selectedSlot)) {
        if (player.getGameMode() !== GameMode.creative) {
            if (mainhand.amount > 1) mainhand.amount--;
            else mainhand.setItem(undefined);
        }

        occupySlot(block, selectedSlot);
        dimension.playSound("insert.chiseled_bookshelf", block.center());
    } else if (isSlotOccupied(block, selectedSlot)) {
        emptySlot(block, selectedSlot);

        const itemLocation = { ...faceLocation };
        itemLocation.y -= 0.5;
        dimension.spawnItem(new ItemStack("minecraft:paper"), itemLocation).clearVelocity();

        dimension.playSound("pickup.chiseled_bookshelf", block.center());
    }
}

// ------------------------------
//  Release paper on destruction
// ------------------------------
function releasePaper({ block, destroyedBlockPermutation, dimension }) {
    const states = destroyedBlockPermutation.getAllStates();

    for (const state in states) {
        const value = states[state];
        const isPaper = value === true;

        if (!isPaper) continue;

        dimension.spawnItem(new ItemStack("minecraft:paper"), block.center());
    }
}

/** @type {import("@minecraft/server").BlockCustomComponent} */
const BlockPigeonholesStorageComponent = {
    onPlayerInteract: handleInteract,
    onPlayerDestroy: releasePaper,
};

world.beforeEvents.worldInitialize.subscribe(({ blockComponentRegistry }) => {
    blockComponentRegistry.registerCustomComponent(
        "wiki:pigeonholes_storage",
        BlockPigeonholesStorageComponent
    );
});

import { world, ItemStack } from "@minecraft/server";
import SelectionBoxes from "../utilities/selection_boxes"; // Import the SelectionBoxes class to use it

// Support orientation along both horizontal axes
const pots = {
    x: new SelectionBoxes(
        { origin: [-7, 0, -3], size: [6, 6, 6] },
        { origin: [1, 0, -3], size: [6, 6, 6] }
    ),
    z: new SelectionBoxes(
        { origin: [-3, 0, -7], size: [6, 6, 6] },
        { origin: [-3, 0, 1], size: [6, 6, 6] }
    ),
};

// The state value and sound associated with each plant
const plants = {
    "minecraft:yellow_flower": {
        value: "dandelion",
        sound: "dig.grass",
    },
    "minecraft:cactus": {
        value: "cactus",
        sound: "dig.cloth",
    },
};

// Get the selected pot for the appropriate axis
const getSelectedPot = (e) =>
    pots[e.block.permutation.getState("wiki:axis")].getSelected(e.faceLocation);

const isPotOccupied = (block, pot) =>
    block.permutation.getState(`wiki:pot_${pot}_plant`) !== "none";

const setPotPlant = (block, pot, plant) =>
    block.setPermutation(block.permutation.withState(`wiki:pot_${pot}_plant`, plant));

// Our flower pots even have sound effects!
const playPlantSound = (dimension, location, sound) =>
    dimension.runCommand(`playsound ${sound} @a ${location.x} ${location.y} ${location.z} 0.5`);

// If a pot is not selected (the inbetween area is targeted) or is already filled, the item use is cancelled.
world.beforeEvents.itemUseOn.subscribe((e) => {
    if (e.block.typeId !== "wiki:double_flower_pot" || !plants[e.itemStack.typeId]) return;

    const selectedPot = getSelectedPot(e);

    if (selectedPot === undefined || isPotOccupied(e.block, selectedPot)) e.cancel = true;
});

// -------------------------------
//    Plant in the selected pot
// -------------------------------
world.afterEvents.itemUseOn.subscribe((e) => {
    if (
        e.block.typeId !== "wiki:double_flower_pot" ||
        !plants[e.itemStack.typeId] ||
        e.source.isSneaking
    )
        return;

    const selectedPot = getSelectedPot(e);
    const plant = plants[e.itemStack.typeId];

    setPotPlant(e.block, selectedPot, plant.value);
    playPlantSound(e.block.dimension, e.block.location, plant.sound);
});

// -------------------------------
//  Release plants on destruction
// -------------------------------
function releasePlants(e) {
    const states = (e.brokenBlockPermutation ?? e.explodedBlockPermutation).getAllStates();

    // Array of plant state values e.g. ["cactus", "dandelion"]
    const storedPlants = Object.entries(states)
        .filter(([state, value]) => state.startsWith("wiki:pot") && value !== "none")
        .map(([state, value]) => value);

    if (storedPlants.length === 0) return;

    // Centre loot in block
    const lootLocation = {
        x: e.block.location.x + 0.5,
        y: e.block.location.y + 0.5,
        z: e.block.location.z + 0.5,
    };

    // Create an item entity for every potted plant
    for (const plant of storedPlants) {
        const plantId = Object.keys(plants).find((key) => plants[key].value === plant);

        e.dimension.spawnItem(new ItemStack(plantId), lootLocation);
        playPlantSound(e.dimension, e.block.location, plants[plantId].sound);
    }
}

world.afterEvents.playerBreakBlock.subscribe((e) => {
    if (e.brokenBlockPermutation.type.id === "wiki:double_flower_pot") releasePlants(e);
});
world.afterEvents.blockExplode.subscribe((e) => {
    if (e.explodedBlockPermutation.type.id === "wiki:double_flower_pot") releasePlants(e);
});