Custom item / Cannot read properties of undefined (reading 'id')

FFJ

Hi!

I am new but I enjoy RPGJS very much. I have problems with custom item parameters though. Every example I have tried to follow includes removing the 'default' from export class [item]. This always results in:
TypeError: Cannot read properties of undefined (reading 'id')

I have tried this I found from the forum:

import { Item } from '@rpgjs/database'

@Item({  
    name: 'CustomItem'
})
export class CustomItem {
    custom: number = 200
}

And this, from the documentation:

import { RpgPlayer } from '@rpgjs/server'
import { Item } from '@rpgjs/database'

@Item({  
    name: 'Potion',
    description: 'Gives 100 HP',
    price: 200,
    hpValue: 100,
    hitRate: 1,
    consumable: true,
    addStates: [],
    removeStates: [],
    elements: [],
    effects: [],
    paramsModifier: {}
})
export class Potion {
    onAdd(player: RpgPlayer) {

    }

    onUse(player: RpgPlayer) {

    }

    onUseFailed(player: RpgPlayer) {

    }

    onRemove(player: RpgPlayer) {

    }
}

Any advice here? Thanks!

FFJ

Ok actually I noticed that I can add the custom property with the default export after all, but the custom GUI just don't know anything about it, though it shows up in the server side (player.ts)..

dominx99

FFJ

Hello,

In this case, I would advise you to check this

If you want to synchronize custom parameters between the client and server you need to update the schema like this:
player.ts

import { RpgPlayer, RpgPlayerHooks } from '@rpgjs/server';

const itemSchemas = {
    ...RpgPlayer.schemas.items[0].item, // Keep existing properties synchronized
    graphic: String // Add a new property
};

export const player: RpgPlayerHooks = {
    props: {
        items: [{ nb: Number, item: itemSchemas }],
        equipments: [itemSchemas]
    }
};

This example is at the very bottom of the page I linked above.

FFJ

Thanks a lot, this solved it!