P42_godDaemons/Observer/handlers/system/positions.js

import { replyToAction } from '../../../bus/publishActionReply.js'
import { parseSimTime } from '../../actionsHelper.js'
import { Frustum } from '../../frustum.js'

export const actions = {

    async action_GETAGENTPOSITION(action, payload, reqid, sender, cnxId, roles) {
        const reader = this.observerSrv.gpsStorageReader
        if(!reader) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'GPS storage reader not ready' })
            return
        }

        if(!this.observerSrv.isLive()) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Simulation not live' })
            return
        }

        const agentId = payload?.agentId
        if(!agentId || typeof(agentId) !== 'string') {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Missing or invalid agentId' })
            return
        }

        const at = parseSimTime(payload, () => this.observerSrv.now())
        if(at === null) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Invalid simulation time' })
            return
        }

        const agent = await reader.getAgentPosition(agentId, at)
        if(!agent) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: `Unknown agent: ${agentId}` })
            return
        }

        replyToAction(this, { action, reqid, sender, cnxId, success: true, payload: { agent } })
    },

    async action_GETAGENTSINFRUSTUM(action, payload, reqid, sender, cnxId, roles) {
        const registry = this.observerSrv.requestorRegistry
        if(!registry) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Requestor registry not ready' })
            return
        }

        if(!this.observerSrv.isLive()) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Simulation not live' })
            return
        }

        const frustum = Frustum.fromPlanes(payload?.planes)
        if(!frustum) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Missing or invalid frustum planes (expected 6)' })
            return
        }

        const at = parseSimTime(payload, () => this.observerSrv.now())
        if(at === null) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Invalid simulation time' })
            return
        }

        const result = await registry.evaluateOnce({ frustum, t: at })
        if(!result.ok) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: result.err })
            return
        }

        replyToAction(this, {
            action,
            reqid,
            sender,
            cnxId,
            success: true,
            payload: {
                agents: result.agents,
                t: result.t,
            },
        })
    },

    async action_SUBSCRIBEFRUSTUM(action, payload, reqid, sender, cnxId, roles) {
        const registry = this.observerSrv.requestorRegistry
        if(!registry) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Requestor registry not ready' })
            return
        }

        if(!this.observerSrv.isLive()) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Simulation not live' })
            return
        }

        if(!cnxId || typeof(cnxId) !== 'string') {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: 'Missing or invalid cnxId' })
            return
        }

        const result = await registry.subscribeFrustum(cnxId, {
            planes: payload?.planes,
            frequency: payload?.frequency,
        })
        if(!result.ok) {
            replyToAction(this, { action, reqid, sender, cnxId, success: false, err: result.err })
            return
        }

        replyToAction(this, {
            action,
            reqid,
            sender,
            cnxId,
            success: true,
            payload: {
                frequency: result.frequency,
                t: result.t,
            },
        })
    },

}