Solve #215 Better late init interest support

druid/system/druid_instance.lua

@@ -193,6 +193,18 @@ local function process_input(self, action_id, action, components)
 end
 
 
+local function schedule_late_init(self)
+	if self._late_init_timer_id then
+		return
+	end
+
+	self._late_init_timer_id = timer.delay(0, false, function()
+		self._late_init_timer_id = nil
+		self:late_init()
+	end)
+end
+
+
 --- Druid class constructor
 -- @tparam DruidInstance self
 -- @tparam table context Druid context. Usually it is self of script
@@ -215,10 +227,6 @@ function DruidInstance.initialize(self, context, style)
 	for i = 1, #base_component.ALL_INTERESTS do
 		self.components_interest[base_component.ALL_INTERESTS[i]] = {}
 	end
-
-	timer.delay(0, false, function()
-		self:late_init()
-	end)
 end
 
 
@@ -244,6 +252,9 @@ function DruidInstance.new(self, component, ...)
 	if instance.init then
 		instance:init(...)
 	end
+	if instance.on_late_init then
+		schedule_late_init(self)
+	end
 
 	return instance
 end
@@ -315,7 +326,7 @@ function DruidInstance.remove(self, component)
 end
 
 
---- Druid late update function call after init and before udpate step
+--- Druid late update function call after init and before update step
 -- @tparam DruidInstance self
 function DruidInstance.late_init(self)
 	local late_init_components = self.components_interest[base_component.ON_LATE_INIT]

example/example.collection

@@ -16,6 +16,8 @@ embedded_instances {
   "    z: 0.0\n"
   "    w: 1.0\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   ""
   position {
@@ -51,6 +53,8 @@ embedded_instances {
   "    z: 0.0\n"
   "    w: 1.0\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   ""
   position {
@@ -139,6 +143,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -202,6 +208,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -265,6 +273,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -328,6 +338,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -391,6 +403,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -454,6 +468,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -517,6 +533,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -580,6 +598,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -643,6 +663,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -706,6 +728,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -769,6 +793,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -832,6 +858,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -895,6 +923,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -958,6 +988,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1021,6 +1053,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1084,6 +1118,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1147,6 +1183,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1210,6 +1248,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1273,6 +1313,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1336,6 +1378,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1399,6 +1443,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1462,6 +1508,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1525,6 +1573,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1588,6 +1638,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1651,6 +1703,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1714,6 +1768,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1777,6 +1833,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1840,6 +1898,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1903,6 +1963,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -1966,6 +2028,8 @@ embedded_instances {
   "    value: \"true\"\n"
   "    type: PROPERTY_TYPE_BOOLEAN\n"
   "  }\n"
+  "  property_decls {\n"
+  "  }\n"
   "}\n"
   "embedded_components {\n"
   "  id: \"collectionfactory\"\n"
@@ -2003,3 +2067,68 @@ embedded_instances {
     z: 1.0
   }
 }
+embedded_instances {
+  id: "system_late_init_check"
+  data: "components {\n"
+  "  id: \"screen_factory\"\n"
+  "  component: \"/monarch/screen_factory.script\"\n"
+  "  position {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "  }\n"
+  "  rotation {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "    w: 1.0\n"
+  "  }\n"
+  "  properties {\n"
+  "    id: \"screen_id\"\n"
+  "    value: \"system_late_init_check\"\n"
+  "    type: PROPERTY_TYPE_HASH\n"
+  "  }\n"
+  "  properties {\n"
+  "    id: \"popup\"\n"
+  "    value: \"true\"\n"
+  "    type: PROPERTY_TYPE_BOOLEAN\n"
+  "  }\n"
+  "  property_decls {\n"
+  "  }\n"
+  "}\n"
+  "embedded_components {\n"
+  "  id: \"collectionfactory\"\n"
+  "  type: \"collectionfactory\"\n"
+  "  data: \"prototype: \\\"/example/examples/system/late_init_check/late_init_check.collection\\\"\\n"
+  "load_dynamically: false\\n"
+  "\"\n"
+  "  position {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "  }\n"
+  "  rotation {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "    w: 1.0\n"
+  "  }\n"
+  "}\n"
+  ""
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale3 {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+  }
+}

example/example.gui_script

@@ -177,6 +177,7 @@ local function init_lobby(self)
 	self.lobby_grid:add(get_button(self, "Message input", "system_message_input", "/system/message_input/message_input.gui_script"))
 	self.lobby_grid:add(get_button_disabled(self, "Input priority"))
 	self.lobby_grid:add(get_button(self, "Inner templates", "system_inner_templates", "/system/inner_templates/inner_templates.gui_script"))
+	self.lobby_grid:add(get_button(self, "Late init check", "system_late_init_check", "/system/late_init_check/late_init_check.gui_script"))
 end
 
 

example/examples/system/late_init_check/late_init_check.collection

@@ -0,0 +1,39 @@
+name: "late_init_check"
+scale_along_z: 0
+embedded_instances {
+  id: "go"
+  data: "components {\n"
+  "  id: \"late_init_check\"\n"
+  "  component: \"/example/examples/system/late_init_check/late_init_check.gui\"\n"
+  "  position {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "  }\n"
+  "  rotation {\n"
+  "    x: 0.0\n"
+  "    y: 0.0\n"
+  "    z: 0.0\n"
+  "    w: 1.0\n"
+  "  }\n"
+  "  property_decls {\n"
+  "  }\n"
+  "}\n"
+  ""
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale3 {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+  }
+}

example/examples/system/late_init_check/late_init_check.gui

@@ -0,0 +1,374 @@
+script: "/example/examples/system/late_init_check/late_init_check.gui_script"
+fonts {
+  name: "game"
+  font: "/example/assets/fonts/game.font"
+}
+textures {
+  name: "kenney"
+  texture: "/example/assets/images/kenney.atlas"
+}
+background_color {
+  x: 0.0
+  y: 0.0
+  z: 0.0
+  w: 0.0
+}
+nodes {
+  position {
+    x: 300.0
+    y: 415.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 600.0
+    y: 830.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_BOX
+  blend_mode: BLEND_MODE_ALPHA
+  texture: "kenney/empty"
+  id: "root"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  adjust_mode: ADJUST_MODE_FIT
+  layer: ""
+  inherit_alpha: true
+  slice9 {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 0.0
+  }
+  clipping_mode: CLIPPING_MODE_NONE
+  clipping_visible: true
+  clipping_inverted: false
+  alpha: 1.0
+  template_node_child: false
+  size_mode: SIZE_MODE_MANUAL
+  custom_type: 0
+  enabled: true
+  visible: true
+}
+nodes {
+  position {
+    x: 0.0
+    y: 200.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 500.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEXT
+  blend_mode: BLEND_MODE_ALPHA
+  text: "Late init system check\n"
+  "\n"
+  "Should capture input only after create first input component"
+  font: "game"
+  id: "text_hint"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  outline {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  shadow {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  adjust_mode: ADJUST_MODE_FIT
+  line_break: true
+  parent: "root"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  outline_alpha: 1.0
+  shadow_alpha: 0.0
+  template_node_child: false
+  text_leading: 1.0
+  text_tracking: 0.0
+  custom_type: 0
+  enabled: true
+  visible: true
+}
+nodes {
+  position {
+    x: 0.0
+    y: -46.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEMPLATE
+  id: "prefab_button"
+  parent: "root"
+  layer: ""
+  inherit_alpha: true
+  alpha: 1.0
+  template: "/example/templates/button.gui"
+  template_node_child: false
+  custom_type: 0
+  enabled: true
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 60.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_BOX
+  blend_mode: BLEND_MODE_ALPHA
+  texture: "kenney/button_blue"
+  id: "prefab_button/button"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  adjust_mode: ADJUST_MODE_FIT
+  parent: "prefab_button"
+  layer: "image"
+  inherit_alpha: true
+  slice9 {
+    x: 15.0
+    y: 15.0
+    z: 15.0
+    w: 15.0
+  }
+  clipping_mode: CLIPPING_MODE_NONE
+  clipping_visible: true
+  clipping_inverted: false
+  alpha: 1.0
+  overridden_fields: 4
+  template_node_child: true
+  size_mode: SIZE_MODE_MANUAL
+  custom_type: 0
+  enabled: true
+  visible: true
+}
+nodes {
+  position {
+    x: 0.0
+    y: 7.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 0.7
+    y: 0.7
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 200.0
+    y: 100.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_TEXT
+  blend_mode: BLEND_MODE_ALPHA
+  text: "Tap me!"
+  font: "game"
+  id: "prefab_button/text"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_CENTER
+  outline {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  shadow {
+    x: 0.101960786
+    y: 0.2
+    z: 0.6
+    w: 1.0
+  }
+  adjust_mode: ADJUST_MODE_FIT
+  line_break: false
+  parent: "prefab_button/button"
+  layer: "text"
+  inherit_alpha: true
+  alpha: 1.0
+  outline_alpha: 0.0
+  shadow_alpha: 0.78
+  template_node_child: true
+  text_leading: 1.0
+  text_tracking: 0.0
+  custom_type: 0
+  enabled: true
+  visible: true
+}
+nodes {
+  position {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  rotation {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 1.0
+  }
+  scale {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  size {
+    x: 400.0
+    y: 300.0
+    z: 0.0
+    w: 1.0
+  }
+  color {
+    x: 1.0
+    y: 1.0
+    z: 1.0
+    w: 1.0
+  }
+  type: TYPE_BOX
+  blend_mode: BLEND_MODE_ALPHA
+  texture: "kenney/empty"
+  id: "grid"
+  xanchor: XANCHOR_NONE
+  yanchor: YANCHOR_NONE
+  pivot: PIVOT_N
+  adjust_mode: ADJUST_MODE_FIT
+  parent: "root"
+  layer: ""
+  inherit_alpha: true
+  slice9 {
+    x: 0.0
+    y: 0.0
+    z: 0.0
+    w: 0.0
+  }
+  clipping_mode: CLIPPING_MODE_NONE
+  clipping_visible: true
+  clipping_inverted: false
+  alpha: 1.0
+  template_node_child: false
+  size_mode: SIZE_MODE_MANUAL
+  custom_type: 0
+  enabled: true
+  visible: true
+}
+layers {
+  name: "image"
+}
+layers {
+  name: "text"
+}
+material: "/builtins/materials/gui.material"
+adjust_reference: ADJUST_REFERENCE_PARENT
+max_nodes: 512

example/examples/system/late_init_check/late_init_check.gui_script

@@ -0,0 +1,46 @@
+local druid = require("druid.druid")
+
+
+local function create_button(self, index)
+	local cloned = gui.clone_tree(self.prefab)
+	local root = cloned["prefab_button/button"]
+	self.grid:add(root)
+	gui.set_enabled(root, true)
+
+	local button = self.druid:new_button(root, function()
+		print("Created button with timer delay:", index)
+	end)
+	-- Override to check calls, don't do it in production ;)
+	button.on_late_init = function()
+		print("Late init button check", index)
+	end
+
+	print("Button created, is input inited now?", self.druid.input_inited)
+end
+
+
+function init(self)
+	self.druid = druid.new(self)
+
+	self.prefab = gui.get_node("prefab_button/button")
+	gui.set_enabled(self.prefab, false)
+
+	self.grid = self.druid:new_static_grid("grid", self.prefab, 1)
+
+	create_button(self, 0)
+	for index = 1, 4 do
+		timer.delay(index, false, function()
+			create_button(self, index)
+		end)
+	end
+end
+
+
+function final(self)
+	self.druid:final()
+end
+
+
+function on_input(self, action_id, action)
+	return self.druid:on_input(action_id, action)
+end