FindObject cannot find any missiles

[Ephreaym]

object.ClassMissile seems not to be implemented?

if (ns.InCirclef{Center: wiz.unit, R: 200}).Matches(ns.FindClosestObject(wiz.unit, ns.HasClass(object.ClassMissile))) {
        wiz.unit.ChatStr("INVERT")
    }

I'm trying to add an inversion script. Script works fine on other classes, look a door. But I can't use ClassMissile.

[angrykirc]

This problem occurs because of the way the game engine treats these Missile objects. They are not stored in the bucketByPos table, the one FindClosestObject function uses internally. https://github.com/noxworld-dev/opennox/blob/6f232cc4c4adb33c90fdde995cdf81e32f0f6142/src/server/map.go#L240-L270 Needs a workaround method, probably using 0x750700 (UpdatableList, non-missile global object table) and 0x750704 (UpdatableList2, missile global object table)

[dennwc]

Sorry, this is a known issue, forgot to open a ticket for it.

As @angrykirc pointed out, script searches the list that does not contain missiles. Will fix for the next Alpha.

[Ephreaym]

Getting a lot of errors. Script does run when a missile is detected.

package test

import (
    "github.com/noxworld-dev/noxscript/ns/v4"
    "github.com/noxworld-dev/opennox-lib/object"
)

var initReady bool
var Bot ns.Obj

func init() {
    initReady = false
    ns.NewTimer(ns.Seconds(2), func() {
        spawnBot()
    })

}

func spawnBot() {
    Bot = ns.CreateObject("NPC", ns.Ptf(2771, 3067))
    Bot.HasTeam(ns.GetHost().Team())
    initReady = true
}
func OnFrame() {
    if initReady {
        if (ns.InCirclef{Center: Bot, R: 200}).Matches(ns.FindClosestObject(Bot, ns.HasClass(object.ClassMissile))) {
            Bot.ChatStr("INVERT")
        } else {

        }
    }

}

2024/01/02 08:21:33 [script]: panic in OnFrame: runtime error: invalid memory address or nil pointer dereference 2024/01/02 08:21:33 [console]: V:\src\test\test.go:25:5: panic: test.OnFrame(...)

[dennwc]

That's likely because there's no spells to invert most of the time. Try this:

if sp := ns.FindClosestObject(wiz.unit, ns.HasClass(object.ClassMissile), ns.InCirclef{Center: wiz.unit, R: 200}); sp != nil {
        wiz.unit.ChatStr("INVERT")
}

In your case FindClosestObject returns nil most of the time and then Matches panics because it doesn't accept nil.