New logic node to spawn objects not in current active scene

Sources/armory/logicnode/SpawnObjectByNameNode.hx

@@ -0,0 +1,72 @@
+package armory.logicnode;
+
+import iron.data.SceneFormat.TSceneFormat;
+import iron.data.Data;
+import iron.object.Object;
+import iron.math.Mat4;
+import armory.trait.physics.RigidBody;
+
+class SpawnObjectByNameNode extends LogicNode {
+
+	var object: Object;
+	var matrices: Array<Mat4> = [];
+
+	/** Scene from which to take the object **/
+	public var property0: Null<String>;
+
+	public function new(tree: LogicTree) {
+		super(tree);
+	}
+
+	override function run(from: Int) {
+		var objectName = inputs[1].get();
+		if (objectName == null) return;
+
+		#if arm_json
+		property0 += ".json";
+		#elseif arm_compress
+		property0 += ".lz4";
+		#end
+
+		var m: Mat4 = inputs[2].get();
+		matrices.push(m != null ? m.clone() : null);
+		var spawnChildren: Bool = inputs.length > 3 ? inputs[3].get() : true; // TODO
+
+		Data.getSceneRaw(property0, (rawScene: TSceneFormat) -> {
+
+			//Check if object with given name present in the specified scene
+			var objPresent: Bool = false;
+
+			for (o in rawScene.objects) {
+				if (o.name == objectName) {
+					objPresent = true;
+					break;
+				}
+			}
+			if (! objPresent) return;
+
+			//Spawn object if present
+			iron.Scene.active.spawnObject(objectName, null, function(o: Object) {
+				object = o;
+				var matrix = matrices.pop(); // Async spawn in a loop, order is non-stable
+				if (matrix != null) {
+					object.transform.setMatrix(matrix);
+					#if arm_physics
+					var rigidBody = object.getTrait(RigidBody);
+					if (rigidBody != null) {
+						object.transform.buildMatrix();
+						rigidBody.syncTransform();
+					}
+					#end
+				}
+				object.visible = true;
+				runOutput(0);
+			}, spawnChildren, rawScene);
+
+		});
+	}
+
+	override function get(from: Int): Dynamic {
+		return object;
+	}
+}

blender/arm/logicnode/object/LN_spawn_object_by_name.py

@@ -0,0 +1,24 @@
+from arm.logicnode.arm_nodes import *
+
+class SpawnObjectByNameNode(ArmLogicTreeNode):
+    """Spawns an object bearing the given name, even if not present in the active scene"""
+    bl_idname = 'LNSpawnObjectByNameNode'
+    bl_label = 'Spawn Object By Name'
+    arm_version = 1
+
+    property0: PointerProperty(
+        type=bpy.types.Scene, name='Scene',
+        description='The scene from which to take the object')
+
+    def init(self, context):
+        super(SpawnObjectByNameNode, self).init(context)
+        self.add_input('ArmNodeSocketAction', 'In')
+        self.add_input('NodeSocketString', 'Name')
+        self.add_input('NodeSocketShader', 'Transform')
+        self.add_input('NodeSocketBool', 'Children', default_value=True)
+
+        self.add_output('ArmNodeSocketAction', 'Out')
+        self.add_output('ArmNodeSocketObject', 'Object')
+
+    def draw_buttons(self, context, layout):
+        layout.prop_search(self, 'property0', bpy.data, "scenes")