Merge pull request #34986 from toasteater/feature/is-instance-id-valid

Expose instance_from_id to GDNative

modules/gdnative/gdnative/gdnative.cpp

@@ -170,6 +170,10 @@ bool GDAPI godot_is_instance_valid(const godot_object *p_object) {
 	return ObjectDB::instance_validate((Object *)p_object);
 }
 
+godot_object GDAPI *godot_instance_from_id(godot_int p_instance_id) {
+	return (godot_object *)ObjectDB::get_instance((ObjectID)p_instance_id);
+}
+
 void *godot_get_class_tag(const godot_string_name *p_class) {
 	StringName class_name = *(StringName *)p_class;
 	ClassDB::ClassInfo *class_info = ClassDB::classes.getptr(class_name);

modules/gdnative/gdnative_api.json

@@ -155,6 +155,13 @@
               ["const godot_object *", "p_object"],
               ["void *", "p_class_tag"]
             ]
+          },
+          {
+            "name": "godot_instance_from_id",
+            "return_type": "godot_object *",
+            "arguments": [
+              ["godot_int", "p_instance_id"]
+            ]
           }
         ]
       },

modules/gdnative/include/gdnative/gdnative.h

@@ -290,6 +290,9 @@ bool GDAPI godot_is_instance_valid(const godot_object *p_object);
 void GDAPI *godot_get_class_tag(const godot_string_name *p_class);
 godot_object GDAPI *godot_object_cast_to(const godot_object *p_object, void *p_class_tag);
 
+// equivalent of GDScript's instance_from_id
+godot_object GDAPI *godot_instance_from_id(godot_int p_instance_id);
+
 #ifdef __cplusplus
 }
 #endif