look like it works now, i did a workaround, dunno what this issue was 💀

braincell.gd

@@ -3,6 +3,8 @@ extends CharacterBody2D
 
 const SPEED = 170.0
 const JUMP_VELOCITY = -400.0
+var ready_to_door : bool = true
+@export var doorBox : Area2D
 
 
 func _physics_process(delta: float) -> void:
@@ -16,22 +18,33 @@ func _physics_process(delta: float) -> void:
 
 	# Get the input direction and handle the movement/deceleration.
 	# As good practice, you should replace UI actions with custom gameplay actions.
+	
 	var direction := Input.get_vector("left","right","up","down")
-	if direction:
+	if direction and Router.player_mode:
 		velocity = direction * SPEED
 	else:
 		velocity = velocity.move_toward(Vector2(0,0), SPEED)
 
 	move_and_slide()
 	
+	if !doorBox.has_overlapping_areas():
+		ready_to_door = true
+
 
 func _on_door_box_area_entered(area: Area2D) -> void:
 	print(area.name)
+	if ready_to_door:
 		if area.name == "DoorIn":
 			global_position = area.get_parent().get_parent().door_out_node.global_position
-		Router.activate_seg.emit(Router.cur_id + 1)
+			#Router.activate_seg.emit(Router.cur_id + 1)
+			if (area.get_parent().get_parent().prev_seg):
+				Router.activate_seg.emit(area.get_parent().get_parent().prev_seg.seg_id)
+			ready_to_door = false
 			# +1 seg
 		elif area.name == "DoorOut":
 			global_position = area.get_parent().get_parent().door_in_node.global_position
-		Router.activate_seg.emit(Router.cur_id - 1)
+			if (area.get_parent().get_parent().this_seg):
+				Router.activate_seg.emit(area.get_parent().get_parent().this_seg.seg_id)
+			ready_to_door = false
+			#Router.activate_seg.emit(Router.cur_id - 1)
 			# -1 seg

camera_2d.gd

@@ -1,9 +1,11 @@
 extends Camera2D
 
-var target : Node2D
-@export var temp_segment : Node2D
+#var target : Node2D
+#@export var temp_segment : Node2D
 @export var snake_line : Line2D
 
+@export var player : Node2D
+
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
 	pass # Replace with function body.
@@ -11,22 +13,21 @@ func _ready() -> void:
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
-	if (Input.is_action_just_pressed("test_switch_cam")):
-		if(target):
-			target = null
-		else:
-			target = temp_segment
 	
-	if target:
+	
+	if Router.player_mode:
 		# TODO FIX
 		#position = lerp(position, target.position, 0.6 * delta)
 		#zoom = lerp(zoom, Vector2(1,1),0.6 * delta)
-		position = target.position
+		#position = Router.current_seg.position
+		position = player.global_position
 		zoom = Vector2(1,1)
-		snake_line.modulate = Color(1,1,1,0.5)
+		snake_line.modulate = Color(1,1,1,1)
 		z_index = 0
+		snake_line.z_index = 9
 	else:
 		position = Vector2(0,0)
 		zoom = Vector2(0.05,0.05)
 		snake_line.modulate = Color(1,1,1,1)
+		snake_line.z_index = 11
 		z_index = 1

prefabs/braincell.tscn

@@ -9,10 +9,11 @@ radius = 16.0
 [sub_resource type="CircleShape2D" id="CircleShape2D_q1ksn"]
 radius = 7.07107
 
-[node name="Braincell" type="CharacterBody2D"]
+[node name="Braincell" type="CharacterBody2D" node_paths=PackedStringArray("doorBox")]
 z_index = 15
 motion_mode = 1
 script = ExtResource("1_q1ksn")
+doorBox = NodePath("doorBox")
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 texture = ExtResource("2_wv6rk")

prefabs/snake_segment.gd

@@ -21,11 +21,13 @@ func _ready() -> void:
 	target_pos = position
 	start_pos = position
 	get_new_target()
+	become_real()
 
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
 	move_progress += delta * snake_speed
+	if(!Router.player_mode):
 		if Input.is_action_just_pressed("left"):
 			want_direction = Vector2.LEFT
 		elif Input.is_action_just_pressed("right"):
@@ -55,7 +57,7 @@ func become_real():
 	pass
 
 func become_fake():
-	z_index = 0
-	modulate = Color.DIM_GRAY
-	collision_layer = 2
+	#z_index = 0
+	#modulate = Color.DIM_GRAY
+	#collision_layer = 2
 	pass

prefabs/snake_segment.tscn

@@ -7,7 +7,7 @@
 [ext_resource type="Texture2D" uid="uid://cay1k1dp8yf12" path="res://assets/door.png" id="4_34t3n"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_08kyq"]
-size = Vector2(16, 64)
+size = Vector2(8, 64)
 
 [node name="SnakeSegment" type="AnimatableBody2D" node_paths=PackedStringArray("door")]
 script = ExtResource("1_3ulhv")
@@ -36,7 +36,7 @@ position = Vector2(160, 0)
 position = Vector2(-22, 0)
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="DoorArm/Door/DoorIn"]
-position = Vector2(14, 0)
+position = Vector2(10, 0)
 shape = SubResource("RectangleShape2D_08kyq")
 
 [node name="DoorOut" type="Area2D" parent="DoorArm/Door"]
@@ -44,7 +44,7 @@ position = Vector2(22, 0)
 rotation = 3.14159
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="DoorArm/Door/DoorOut"]
-position = Vector2(14, 3.54925e-05)
+position = Vector2(10, 2.53518e-05)
 shape = SubResource("RectangleShape2D_08kyq")
 
 [node name="Sprite2D" type="Sprite2D" parent="DoorArm/Door"]

router.gd

@@ -4,6 +4,7 @@ signal activate_seg(int)
 
 var current_seg : Node2D
 var cur_id : int = 0
+var player_mode : bool = false
 
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
@@ -12,4 +13,5 @@ func _ready() -> void:
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
-	pass
+	if (Input.is_action_just_pressed("test_switch_cam")):
+		player_mode = !player_mode

snakeManager.gd

@@ -33,13 +33,14 @@ func _process(delta: float) -> void:
 func activate_segment(act_segment : int):
 	Router.current_seg = segements[act_segment]
 	Router.cur_id = act_segment
-	player.reparent(Router.current_seg)
-	for i in segements.size():
-		if act_segment == i:
-			segements[i].become_real()
-			
-		else: 
-			segements[i].become_fake()
+	player.call_deferred("reparent",Router.current_seg)
+	#player.reparent(Router.current_seg)
+	#for i in segements.size():
+		#if act_segment == i:
+			#segements[i].become_real()
+			#
+		#else: 
+			#segements[i].become_fake()
 			
 
 func redraw_line():

test.tscn

@@ -42,8 +42,8 @@ joint_mode = 2
 begin_cap_mode = 2
 end_cap_mode = 2
 
-[node name="Camera2D" type="Camera2D" parent="." node_paths=PackedStringArray("temp_segment", "snake_line")]
+[node name="Camera2D" type="Camera2D" parent="." node_paths=PackedStringArray("snake_line", "player")]
 zoom = Vector2(0.05, 0.05)
 script = ExtResource("5_ykrsh")
-temp_segment = NodePath("../Snake/SegementHolder/SnakeSegment")
 snake_line = NodePath("../Snake/Line2D")
+player = NodePath("../Snake/SegementHolder/SnakeSegment/Braincell")