cubbot/src/modules/State.ts

import Module from '../utils/Module'
import { IDelta, IPosition, IState } from '../utils/types'

// MAYBE: split

interface IDifficulty {
    level: number,
    locked: boolean
}

interface IAbilities {
    // TODO: Flags 	Byte 	Bit mask. 0x08: damage disabled (god mode), 0x04: can fly, 0x02: is flying, 0x01: is Creative
    flyingSpeed: number,
    walkingSpeed: number
}

interface IPositionPacket extends IPosition {
    flags: number
    teleportId: number
}

// TODO: player_info

/** Handle client state and position */
export default class State extends Module<{ positionConfirm: boolean }> {

    private _state!: IState
    public get state() {
        return this._state
    }

    private _difficulty!: IDifficulty
    public get difficulty() {
        return this._difficulty
    }

    private _abilities!: IDifficulty
    public get abilities() {
        return this._abilities
    }

    private _position!: IPosition
    public get position() {
        return this._position
    }

    public translate(delta: IDelta, onGround: boolean = true) {
        this.client.write('position', {
            onGround,
            x: this.position.x += delta.dX,
            y: this.position.y += delta.dY,
            z: this.position.z += delta.dZ,
        })
    }

    protected mount() {
        this.client.on('login', data => this._state = data)
        this.client.on('difficulty', data => this._difficulty = {
            level: data.difficulty, locked: data.difficultyLocked,
        })
        this.client.on('abilities', data => this._abilities = data)

        this.client.on('position', (data: IPositionPacket) => {
            if (this._position == null) {
                if (data.flags) {
                    this.logger.error('first position is relative')
                    return
                } else {
                    this._position = data
                }
            } else {
                // tslint:disable: no-bitwise
                this._position = {
                    x: data.x + (data.flags & 0x01 ? this._position.x : 0),
                    y: data.y + (data.flags & 0x02 ? this._position.y : 0),
                    z: data.z + (data.flags & 0x04 ? this._position.z : 0),
                    yaw: data.yaw + (data.flags & 0x08 ? this._position.yaw : 0),
                    pitch: data.pitch + (data.flags & 0x10 ? this._position.pitch : 0),
                }
            }

            if (this.conf.positionConfirm) {
               this.client.write('teleport_confirm', { teleportId: data.teleportId })
            }
            this.logger.debug({ type: 'teleported', position: this.position })
        })
    }

    protected getConf() {
        return { positionConfirm: true }
    }

}

// TODO: vehicule_move