tried adding guide lines

project.godot

@@ -28,7 +28,7 @@ window/stretch/mode="canvas_items"
 2d_physics/layer_1="walls"
 2d_physics/layer_2="walldetection"
 2d_physics/layer_3="Marking"
-2d_physics/layer_4="Layer 4"
+2d_physics/layer_4="roadguide"
 
 [rendering]
 

scenes/map_03.tscn

@@ -6,7 +6,7 @@
 [ext_resource type="TileSet" uid="uid://carpfxq3rn3aa" path="res://sprites/spritesheet_htrohr/htrohr.tres" id="5_748hi"]
 [ext_resource type="Texture2D" uid="uid://dpuhee0x5ekud" path="res://sprites/background/spritesheet_scenery.png" id="5_lefrm"]
 
-[sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_qbu02"]
+[sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_fam2n"]
 texture = ExtResource("1_8lp8c")
 texture_region_size = Vector2i(256, 256)
 0:0/0 = 0
@@ -44,7 +44,7 @@ texture_region_size = Vector2i(256, 256)
 
 [sub_resource type="TileSet" id="TileSet_5knbn"]
 tile_size = Vector2i(256, 256)
-sources/1 = SubResource("TileSetAtlasSource_qbu02")
+sources/1 = SubResource("TileSetAtlasSource_fam2n")
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_daqun"]
 size = Vector2(23, 317)

scripts/car.gd

@@ -81,8 +81,7 @@ var burnout:float=0 #at 0 is off
 
 @onready var ray_cast_fl: RayCast2D = $RayCast_FL
 @onready var ray_cast_fr: RayCast2D = $RayCast_FR
-@onready var ray_cast_car_fl: RayCast2D = $RayCast_Car_FL
-@onready var ray_cast_car_fr: RayCast2D = $RayCast_Car_FR
+
 
 @onready var reset_timer: Timer = $resetTimer
 
@@ -175,36 +174,43 @@ func get_input(delta:float):
 	const distance_inf=1000
 	var distance_fl=distance_inf
 	var distance_fr=distance_inf
+	var distance_guide_l=0
+	var distance_guide_r=0
+	
 	if ray_cast_fl.is_colliding():
 		var origin=ray_cast_fl.global_transform.origin
 		var collision_point = ray_cast_fl.get_collision_point()
 		distance_fl = origin.distance_to(collision_point)
 		var collision_object=ray_cast_fl.get_collider()
-		#if collision_object.name==ROAD_R_NAME:
+		if collision_object.name==ROAD_R_NAME:
+			distance_fl*=2 #fake distance when wrong side of road
 			
 		#print("DistanceFL "+str(distance_fl))
 	if ray_cast_fr.is_colliding():
 		var origin=ray_cast_fr.global_transform.origin
 		var collision_point = ray_cast_fr.get_collision_point()
 		distance_fr = origin.distance_to(collision_point)
+		var collision_object=ray_cast_fr.get_collider()
+		if collision_object.name==ROAD_L_NAME:
+			distance_fr*=2 #fake distance when wrong side of road
 		#print("DistanceFR "+str(distance_fr))
 		
+		
+		
 	var distance_min= min(distance_fl,distance_fr)
 	
-	
 	var turndirection = 1 if distance_fl<distance_fr else -1
-	
 	var steering_angle=constrain( remap(velocity.length(),steering_speed_fast,steering_speed_slow,steering_angle_fast,steering_angle_slow),steering_angle_fast,steering_angle_slow) #set maximum steering_angle based on speed
 	
 	var steering_distance_far=constrain( remap(velocity.length(),steering_speed_fast,steering_speed_slow,steering_distance_far_fast,steering_distance_far_slow),steering_distance_far_fast,steering_distance_far_slow)
 	var steering_distance_close=constrain( remap(velocity.length(),steering_speed_fast,steering_speed_slow,steering_distance_close_fast,steering_distance_close_slow),steering_distance_close_fast,steering_distance_close_slow)
 	
-	
+	steer_direction=0 #0=straight
 	if autosteer_enabled:
 		if distance_min<steering_distance_far: #wall close, start steering away
-			steer_direction = turndirection*deg_to_rad(constrain(remap(distance_min,steering_distance_far,steering_distance_close,0,steering_angle), 0,steering_angle))
-		else:
-			steer_direction=0 #drive straight
+			steer_direction += turndirection*deg_to_rad(constrain(remap(distance_min,steering_distance_far,steering_distance_close,0,steering_angle), 0,steering_angle))
+
+		
 	
 	applied_engine_power=0
 	

scripts/line_2d_collision.gd

@@ -0,0 +1,14 @@
+extends Line2D
+
+
+func _ready() -> void:
+	var staticbody:StaticBody2D=get_child(0)
+	$".".visible=false
+
+	
+	var line_poly=Geometry2D.offset_polyline(points,width/2)
+	
+	for poly in line_poly:
+		var col = CollisionPolygon2D.new()
+		col.polygon=poly
+		staticbody.add_child(col)