OneJS•3y ago

Oops sorry missed this one Yes right TS

Oops sorry, missed this one. Yes, right. TS types are all stripped when transpiled into js. So calling C# generic functions from TS won't work directly.

2 Replies

SingtaaOP•3y ago

Another approach is to create a helper function/extension and use reflection.

public static class EntityManagerExtensions {
    public static object ToComponentDataArray(this EntityQuery query, Type type, Allocator allocator) {
        var m = typeof(EntityQuery).GetMethod("ToComponentDataArray", new[] { typeof(Allocator) });
        m = m.MakeGenericMethod(type);
        return m.Invoke(query, new object[] { allocator });
    }
}

public static class EntityManagerExtensions {
    public static object ToComponentDataArray(this EntityQuery query, Type type, Allocator allocator) {
        var m = typeof(EntityQuery).GetMethod("ToComponentDataArray", new[] { typeof(Allocator) });
        m = m.MakeGenericMethod(type);
        return m.Invoke(query, new object[] { allocator });
    }
}

Basically, for your example, you can make a Register function that takes in a Type type parameter. Beside being more flexible, this also makes the TS calling code a little easier to write:

import { GameObject, MeshRenderer, PrimitiveType } from "UnityEngine"

var mr = GameObject.CreatePrimitive(PrimitiveType.Sphere).GetComponent(MeshRenderer)

import { GameObject, MeshRenderer, PrimitiveType } from "UnityEngine"

var mr = GameObject.CreatePrimitive(PrimitiveType.Sphere).GetComponent(MeshRenderer)

(You can directly feed MeshRenderer into the GetComponent() call)

Unknown User•3y ago

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Oops sorry missed this one Yes right TS