Add kart game

godot/PhysicsInterpolator.gd

@@ -0,0 +1,15 @@
+extends Node3D
+
+class_name PhysicsInterpolator
+
+var physics_delta = 1.0;
+
+func _ready():
+	top_level = true
+
+func _process(delta):
+	transform = transform.interpolate_with(
+		get_parent().global_transform, delta / physics_delta)
+
+func _physics_process(delta):
+	physics_delta = delta