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[HTML5] JS callback functions now returns passed value.

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JavaScript callbacks created via the `JavaScript.create_callback` method
used to always return void.

With this patch they return the value returned by the Godot function as
one would expect.
This commit is contained in:
Fabio Alessandrelli 2021-06-17 18:13:14 +02:00
parent 92f20fd70e
commit ad5bdaf5aa
2 changed files with 25 additions and 1 deletions
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15
platform/javascript/js/libs/library_godot_javascript_singleton.js
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@ -34,6 +34,7 @@ const GodotJSWrapper = {
$GodotJSWrapper__postset: 'GodotJSWrapper.proxies = new Map();',
$GodotJSWrapper: {
proxies: null,
cb_ret: null,
MyProxy: function (val) {
const id = IDHandler.add(this);
@ -202,15 +203,27 @@ const GodotJSWrapper = {
let id = 0;
const cb = function () {
if (!GodotJSWrapper.get_proxied_value(id)) {
return;
return undefined;
}
// The callback will store the returned value in this variable via
// "godot_js_wrapper_object_set_cb_ret" upon calling the user function.
// This is safe! JavaScript is single threaded (and using it in threads is not a good idea anyway).
GodotJSWrapper.cb_ret = null;
const args = Array.from(arguments);
func(p_ref, GodotJSWrapper.get_proxied(args), args.length);
const ret = GodotJSWrapper.cb_ret;
GodotJSWrapper.cb_ret = null;
return ret;
};
id = GodotJSWrapper.get_proxied(cb);
return id;
},
godot_js_wrapper_object_set_cb_ret__sig: 'vii',
godot_js_wrapper_object_set_cb_ret: function (p_val_type, p_val_ex) {
GodotJSWrapper.cb_ret = GodotJSWrapper.variant2js(p_val_type, p_val_ex);
},
godot_js_wrapper_object_getvar__sig: 'iiii',
godot_js_wrapper_object_getvar: function (p_id, p_type, p_exchange) {
const obj = GodotJSWrapper.get_proxied_value(p_id);