使用 Decentraland 发起一个事件 SDK

Question

I'm trying to fire a custom event in my Decentraland scene. According with the docs , I just need to do something like:

const events = new EventManager()
events.fireEvent(new MyEvent(field1, field2))

So, following that example I'm trying to simulate the E user input when users click on a UIImage . To accomplish that:

1. I setted the onClick property of the button like this:

let btn = new UIImage(someContainer, new Texture('assets/images/btn.png'))
btn.onClick = () => { triggerPrimaryInput() }

2. The triggerPrimaryInput function is like:

triggerPrimaryInput()
{
    const simulatedEvent: LocalActionButtonEvent = {
        origin: new Vector3(0, 0, 0),
        direction: new Vector3(0, 0, 0),
        button: ActionButton.PRIMARY,
        buttonId: 1,
        type: 1
    }

    const em = new EventManager
    em.fireEvent(simulatedEvent)
}

3. When I do a click on the button, Chrome console shows the error:

Error: Error: The EventConstructor is not registered

Because of that, I created a new class using the @EventConstructor() decorator and I put the triggerPrimaryInput() function's logic in the constructor, but the error keeps the same.

Answer 1

Well, debuging Decentraland's Input.ts I finally solve my problem. I just needed to do:

// Create the button and set the onClick property
let btn = new UIImage(someContainer, new Texture('assets/images/btn.png'))
btn.onClick = () => { triggerPrimaryInput() }

function triggerPrimaryInput()
{
    // Define the input event
    const simulatedEvent: LocalActionButtonEvent = {
        origin: new Vector3(0, 0, 0),
        direction: new Vector3(0, 0, 0),
        button: ActionButton.PRIMARY,
        buttonId: 1,
        type: 1
    }

    // Call this method using the simulated event
    Input.instance.handlePointerEvent(simulatedEvent)
}

With that, I can simulate the E keyboard input when the user clic over a button. Using this strategy I was able to create a custom UI allowing the user to interact with an NPC avoiding the use of the dialogs provided by NPC-Utils