UUpdate Tutorials

playground/Sources/lnx/SpawnBox.hx

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+package lnx;
+
+import iron.object.Object;
+import iron.system.Input;
+import iron.Scene;
+import leenkx.trait.physics.RigidBody;
+
+class SpawnBox extends iron.Trait {
+    public function new() {
+        super();
+        // We want to get notified every frame
+        notifyOnUpdate(update);
+    }
+
+    function update() {
+        // f key was pressed
+        if (Input.getKeyboard().started("f")) {
+            // Spawn Box object
+            Scene.active.spawnObject("Box", null, boxSpawned);
+        }
+    }
+
+    // Box just got spawned
+    function boxSpawned(o:Object) {
+        // Translate cube to the location of empty object
+        var traitOwner = object;
+        o.transform.loc.setFrom(traitOwner.transform.loc);
+        // Box object has a rigid body trait
+        // Notify physics system to take new location into effect!
+        o.getTrait(RigidBody).syncTransform();
+    }
+}