Add general swipe and drag examples

example/examples/general/drag/drag.gui_script

@@ -0,0 +1,46 @@
+local druid = require("druid.druid")
+
+
+local function on_drag_callback(self, dx, dy)
+	self.position.x = self.position.x + dx
+	self.position.y = self.position.y + dy
+	gui.set_position(self.box, self.position)
+end
+
+
+local function on_drag_end(self)
+	self.position.x = 0
+	self.position.y = 170
+	gui.animate(self.box, "position", self.position, gui.EASING_OUTSINE, 0.3)
+end
+
+
+function init(self)
+	self.druid = druid.new(self)
+
+	self.box = gui.get_node("icon_box")
+	self.position = gui.get_position(self.box)
+	self.drag = self.druid:new_drag("drag_node", on_drag_callback)
+
+	self.drag.on_drag_end:subscribe(on_drag_end, self)
+end
+
+
+function final(self)
+	self.druid:final()
+end
+
+
+function update(self, dt)
+	self.druid:update(dt)
+end
+
+
+function on_message(self, message_id, message, sender)
+	self.druid:on_message(message_id, message, sender)
+end
+
+
+function on_input(self, action_id, action)
+	return self.druid:on_input(action_id, action)
+end