Add NetworkArea nodes as physics extras

addons/netfox.extras/physics/network-area-2d.gd

@@ -0,0 +1,68 @@
+class_name NetworkArea2D
+extends Area2D
+
+## Emitted when a body enters this area.
+signal rollback_body_entered(body: Node2D, tick: int)
+## Emitted when a body exits this area.
+signal rollback_body_exited(body: Node2D, tick: int)
+
+## Emitted when the received area enters this area. Requires monitoring to be set to true.
+signal rollback_area_entered(area: Area2D, tick: int)
+## Emitted when the received area exits this area. Requires monitoring to be set to true.
+signal rollback_area_exited(area: Area2D, tick: int)
+
+var _overlapping_bodies := _HistoryBuffer.new()
+var _overlapping_areas := _HistoryBuffer.new()
+
+func _notification(what: int):
+	if what == NOTIFICATION_READY:
+		NetworkTime.on_tick.connect(_tick)
+
+func _tick(_d: float, tick: int):
+	_update_bodies(tick)
+	_update_areas(tick)
+
+func _update_bodies(tick: int):
+	var current := self.get_overlapping_bodies()
+	_overlapping_bodies.set_snapshot(tick, current)
+
+	if not _overlapping_bodies.has(tick - 1):
+		for body in current:
+			rollback_body_entered.emit(body, tick)
+		return
+
+	var prev: Array = _overlapping_bodies.get_snapshot(tick - 1)
+
+	if current.hash() != prev.hash():
+		for body in current:
+			if not prev.has(body):
+				rollback_body_entered.emit(body, tick)
+
+		for body in prev:
+			if not current.has(body):
+				rollback_body_exited.emit(body, tick)
+
+	_overlapping_bodies.trim(NetworkRollback.history_start)
+
+
+func _update_areas(tick: int):
+	var current := self.get_overlapping_areas()
+	_overlapping_areas.set_snapshot(tick, current)
+
+	if not _overlapping_areas.has(tick - 1):
+		for body in current:
+			rollback_body_entered.emit(body, tick)
+		return
+
+	var prev: Array = _overlapping_areas.get_snapshot(tick - 1)
+
+	if current.hash() != prev.hash():
+		for body in current:
+			if not prev.has(body):
+				rollback_area_entered.emit(body, tick)
+
+		for body in prev:
+			if not current.has(body):
+				rollback_area_exited.emit(body, tick)
+
+	_overlapping_areas.trim(NetworkRollback.history_start)

addons/netfox.extras/physics/network-area-2d.gd.uid

@@ -0,0 +1 @@
+uid://hdeqysxd3lql

addons/netfox.extras/physics/network-area-3d.gd

@@ -0,0 +1,68 @@
+class_name NetworkArea3D
+extends Area3D
+
+## Emitted when a body enters this area.
+signal rollback_body_entered(body: Node3D, tick: int)
+## Emitted when a body exits this area.
+signal rollback_body_exited(body: Node3D, tick: int)
+
+## Emitted when the received area enters this area. Requires monitoring to be set to true.
+signal rollback_area_entered(area: Area3D, tick: int)
+## Emitted when the received area exits this area. Requires monitoring to be set to true.
+signal rollback_area_exited(area: Area3D, tick: int)
+
+var _overlapping_bodies := _HistoryBuffer.new()
+var _overlapping_areas := _HistoryBuffer.new()
+
+func _notification(what: int):
+	if what == NOTIFICATION_READY:
+		NetworkTime.on_tick.connect(_tick)
+
+func _tick(_d: float, tick: int):
+	_update_bodies(tick)
+	_update_areas(tick)
+
+func _update_bodies(tick: int):
+	var current := self.get_overlapping_bodies()
+	_overlapping_bodies.set_snapshot(tick, current)
+
+	if not _overlapping_bodies.has(tick - 1):
+		for body in current:
+			rollback_body_entered.emit(body, tick)
+		return
+
+	var prev: Array = _overlapping_bodies.get_snapshot(tick - 1)
+
+	if current.hash() != prev.hash():
+		for body in current:
+			if not prev.has(body):
+				rollback_body_entered.emit(body, tick)
+
+		for body in prev:
+			if not current.has(body):
+				rollback_body_exited.emit(body, tick)
+
+	_overlapping_bodies.trim(NetworkRollback.history_start)
+
+
+func _update_areas(tick: int):
+	var current := self.get_overlapping_areas()
+	_overlapping_areas.set_snapshot(tick, current)
+
+	if not _overlapping_areas.has(tick - 1):
+		for body in current:
+			rollback_body_entered.emit(body, tick)
+		return
+
+	var prev: Array = _overlapping_areas.get_snapshot(tick - 1)
+
+	if current.hash() != prev.hash():
+		for body in current:
+			if not prev.has(body):
+				rollback_area_entered.emit(body, tick)
+
+		for body in prev:
+			if not current.has(body):
+				rollback_area_exited.emit(body, tick)
+
+	_overlapping_areas.trim(NetworkRollback.history_start)

addons/netfox.extras/physics/network-area-3d.gd.uid

@@ -0,0 +1 @@
+uid://bgui8a67mb51l