Arma 3: Eden Editor Event Handlers

Editor Event Handlers

Eden Editor Event Handlers are added to the editor instance and will remain active for the duration of a session. Launching a preview will keep the event handlers, but closing the editor will erase all of them and you will have to add them again on the next Eden instance.

Related commands

• add3DENEventHandler
• remove3DENEventHandler

Config

Alternatively, you can define event handlers directly in the config. Use your custom section (mySection in the example) to prevent overriding handlers from other sources. Handlers defined here will automatically be added when Eden Editor is opened.

class Cfg3DEN
{
	class EventHandlers
	{
		class mySection
		{
			onUndo = "hint 'Undo';";
			// <handlerName> = <handlerExpression>
		};
	};
};

Events

ⓘ

Most handlers do not receive any arguments. This is intended, because in most cases, required data can be obtained using either get3DENActionState or specialised 'get' commands.

OnConnectingStart

When Connecting operation is initiated.

add3DENEventHandler ["OnConnectingStart", {
	params ["_class", "_from"];
}];

• class: Config - connection config class
• from: Array of Eden Entities

OnConnectingEnd

When Connecting operation is terminated, no matter if it was confirmed or canceled.

add3DENEventHandler ["OnConnectingEnd", {
	params ["_class", "_from", "_to"];
}];

• class: Config - connection config class
• from: Array of 3DEN entities
• to: Eden Entity (when connecting was successful) or nil (when connecting was terminated)

OnCopy

Fires when entities are copied.
Also fires when entities are cut, but unlike OnCut, OnCopy fires before the entities are deleted, meaning the entities are still accessible with get3DENSelected.
No arguments

OnCut

Fires when entities are cut (after the entities have been deleted).
No arguments

OnDeleteUnits

When entities are deleted.
No arguments

OnEntityMenu

When Entity Context Menu is opened.

add3DENEventHandler ["OnEntityMenu", {
	params ["_position", "_entity", "_listPath"];
}];

• position: Array - Position where user clicked to open the menu.
  • Entity position when clicked on an entity.
  • Empty array when clicked on something that doesn't have position (i.e. abstract folder in Edit list like BLUFOR, Trigger, etc.)
• entity: Eden Entity
  • Nil when clicked on empty space
• listPath: Array - UI tree path when clicked on entity in the entity list.
  • Nil when clicked in the scene (we cannot use empty array, because that's a path to root item)

OnGridChange

When grid changes, either using Toolbar option, ot by scripting command set3DENGrid.

add3DENEventHandler ["OnGridChange", {
	params ["_gridType", "_gridValue"];
}];

• gridType: String - can be "translation", "rotation" or "scaling"
• gridValue: Number

OnHistoryChange

When history changes.
No arguments

OnMapClosed

When map is closed.
No arguments

OnMapOpened

When map is opened.
No arguments

OnMessage

Handler used for showing on-screen notifications, triggered by various range of events. Message IDs:

• 0 - Mission saved
• 1 - Mission autosaved
• 2 - Trying to move a character into full vehicle
• 3 - Moved character into enemy vehicle
• 4 - Trying to run mission without any player
• 5 - Mission exported to SP
• 6 - Mission exported to MP
• 7 - Attempting to delete a default layer

add3DENEventHandler ["OnMessage", {
	params ["_messageID"];
}];

• messageID: Number

OnMissionAutosave

When scenario is autosaved.
No arguments

OnMissionLoad

When scenario is loaded.
No arguments

OnMissionNew

When new scenario is started. Executed also when Eden is opened with an empty scenario.
No arguments

OnMissionPreview

When scenario preview is started. Executed when the scenario is already loaded, so entities in it can be accessed.

add3DENEventHandler ["OnMissionPreview", {
	params ["_objects", "_groups", "_waypoints", "_markers"];
}];

• objects: Array
• groups: Array
• waypoints: Array
• markers: Array

Each array is in format:

[entity1, id1, entity2, id2, ..., entityN, idN]

• entity: Object, Group, Array or String
• ID: Number

OnMissionListChange

When the current list of missions in the open/save mission dialog changes, i.e when first opened or a different folder is selected.
No arguments

OnMissionPreviewEnd

When preview ends and user returns back to Eden Editor.
No arguments

OnMissionSave

When scenario is saved.
No arguments

OnMissionSaveAs

When Save As action is triggered (i.e. Save window is opened, but the mission is not necessarily saved yet).
No arguments

OnModeChange

When editing mode is changed (i.e. from Objects to Triggers).
No arguments

OnMoveGridToggle

When translation grid is toggled on or off.
No arguments

OnPaste

When entities are pasted.
No arguments

OnPasteUnitOrig

When entities are pasted on their original positions.
No arguments

OnRedo

When undo operation is redone.
No arguments

OnRotateGridToggle

When rotation grid is toggled on or off.
No arguments

OnSelectionChange

When entity selection changes. Use get3DENSelected to return currently selected entities.
No arguments

OnScaleGridToggle

When area scaling grid is toggled on or off.
No arguments

OnSearchCreate

When "SearchCreate" action is triggered (e.g. when pressing Ctrl+Shift+F).
No arguments

OnSearchEdit

When "SearchEdit" action is triggered (e.g. when pressing Ctrl+F).
No arguments

OnServerToggle

When server is created or destroyed from the preview.
No arguments

OnSubmodeChange

When submode (e.g. BLUFOR or OFPOR for Objects, or Modules for Systems) changes.
No arguments

OnSurfaceSnapToggle

When surface snap settings are changed.
No arguments

OnTerrainNew

When new terrain is loaded. Executed also when Eden is opened.
No arguments

OnToggleMapTextures

When map textures are toggled on or off.
No arguments

OnTogglePlaceEmptyVehicle

When the Place vehicles with crew is toggled on/off in Objects mode.
No arguments

OnUndo

When an operation is undone.
No arguments

OnVerticalToggle

When vertical mode settings are changed.
No arguments

OnWidgetArea

When area widget is selected.
No arguments

OnWidgetNone

When no widget is selected.
No arguments

OnWidgetRotation

When rotation widget is selected.
No arguments

OnWidgetScale

When scaling widget is selected.
No arguments

OnWidgetToggle

When widget is toggled (i.e. browsing through all widget types)
No arguments

OnWidgetTranslation

When translation widget is selected.
No arguments

OnWorkspacePartSwitch

When scenario phase is selected.
No arguments

Object Event Handlers

Editor specific event handlers can be also added directly to objects, using addEventHandler command.

⚠

These handlers exist only for the duration of active workspace. Running a preview or loading the same scenario again will erase all object event handlers, because objects themselves are despawned from the world and then created again.

Related commands

• addEventHandler
• removeEventHandler

Events

ⓘ

Most handlers do not receive any arguments. This is intended, because in most cases, required data can be obtained using either get3DENActionState or specialised 'get' commands.

AttributesChanged3DEN

Fires when object's attributes are changed. Can happen when:

• Changing the attributes by dragging, rotating or using one of the widgets
• Changing and saving the attributes from within the attributes window
• When attributes get changed using scripting commands such as set3DENAttributes or set3DENAttribute

Unlike Dragged3DEN this event handler will not fire continuously but only when the attributes were changed and saved

edenObject addEventHandler ["AttributesChanged3DEN", {
	params ["_object"];
}];

• object: Object - affected object

ConnectionChanged3DEN

When a connection is added or removed from an object.

edenObject addEventHandler ["ConnectionChanged3DEN", {
	params ["_object"];
}];

• object: Object - affected object

RegisteredToWorld3DEN

When object is re-added to the scenario after undoing a delete operation.

edenObject addEventHandler ["RegisteredToWorld3DEN", {
	params ["_object"];
}];

• object: Object - affected object

UnregisteredFromWorld3DEN

When object is removed from the scenario. That happens when you delete it, but also when you undo placement operation.

edenObject addEventHandler ["UnregisteredFromWorld3DEN", {
	params ["_object"];
}];

• object: Object - affected object

Dragged3DEN

When object is dragged and/or rotated. Also triggers when widgets are used to manipulate position and orientation. Does not trigger when the object's size is changed.

edenObject addEventHandler ["Dragged3DEN", {
	params ["_object"];
}];

• object: Object - affected object