Receiver works, probably

entities/energy_flow/energy_flow.aseprite.import

@@ -0,0 +1,30 @@
+[remap]
+
+importer="Aseprite Sprite sheet (JSON)"
+type="JSON"
+uid="uid://bfoujcalueter"
+path="res://.godot/imported/energy_flow.aseprite-eb6a9972110bec4c01ba5ba517515d8a.res"
+
+[deps]
+
+source_file="res://entities/energy_flow/energy_flow.aseprite"
+dest_files=["res://.godot/imported/energy_flow.aseprite-eb6a9972110bec4c01ba5ba517515d8a.res"]
+
+[params]
+
+animation/default/name="default"
+animation/default/direction=0
+animation/default/repeat_count=0
+animation/autoplay_name=""
+atlas_textures/region_filter_clip_enabled=false
+animation/merge_equal_sonsequent_frames=true
+animation/flatten_repetition=true
+middle_import_script=""
+post_import_script=""
+sprite_sheet/edges_artifacts_avoidance_method=0
+sprite_sheet/sprites_surrounding_color=Color(1, 1, 1, 0)
+sprite_sheet/layout=0
+sprite_sheet/max_cells_in_strip=0
+sprite_sheet/trim_sprites_to_overall_min_size=true
+sprite_sheet/collapse_transparent_sprites=true
+sprite_sheet/merge_duplicated_sprites=true

entities/energy_flow/energy_flow_atlas_texture.tres

@@ -0,0 +1,3 @@
+[gd_resource type="AtlasTexture" format=3 uid="uid://dwer5p1ooqv2c"]
+
+[resource]

entities/energy_flow/energy_flow_line.gd

@@ -3,7 +3,11 @@ extends Node2D
 @onready var energy_line: Line2D = %EnergyLine
 @onready var ray_cast: RayCast2D = %RayCast
 
-@export_range(1,999,8) var maximum_flow_distance: float
+@export_range(1,999,1) var maximum_flow_distance: float = 300
+@export var energy: float = 1.0
+
+var energy_distribution_target: CollisionObject2D
+var target_accepting_energy: EnergyAcceptor
 
 func _ready() -> void:
 	var target_position := Vector2(maximum_flow_distance, 0)
@@ -14,10 +18,28 @@ func _ready() -> void:
 	ray_cast.target_position = target_position
 
 func _process(delta: float) -> void:
-	energy_line.clear_points()
 	if ray_cast.is_colliding():
+		if not ray_cast.get_collider() == energy_distribution_target:
+			if target_accepting_energy: target_accepting_energy.deplete()
+			energy_distribution_target = ray_cast.get_collider()
+			_find_energy_acceptor(energy_distribution_target)
+		energy_line.clear_points()
 		energy_line.add_point(Vector2.ZERO)
-		energy_line.add_point(ray_cast.get_collision_point() - global_position)
-	else :
+		energy_line.add_point(Vector2(global_position.distance_to(ray_cast.get_collision_point()), 0))
+		if target_accepting_energy:
+			target_accepting_energy.energize(energy * delta, ray_cast.get_collision_point())
+	elif energy_distribution_target :
+		energy_distribution_target = null
+		if target_accepting_energy:
+			target_accepting_energy.deplete()
+			target_accepting_energy = null
+		energy_line.clear_points()
 		energy_line.add_point(Vector2.ZERO)
 		energy_line.add_point(Vector2(maximum_flow_distance, 0))
+		
+func _find_energy_acceptor(node: Node):
+	for child in node.get_children():
+		if child is EnergyAcceptor:
+			target_accepting_energy = child
+			return
+	target_accepting_energy = null