'Navigation Polygon 2D' ported to Godot 4.1.1

2d/navigation/README.md

@@ -1,14 +1,13 @@
 # Navigation Polygon 2D
 
-Example of using 2D navigation using a
-[`NavigationPolygon`](https://docs.godotengine.org/en/latest/classes/class_navigationpolygon.html)
-in a [`NavigationPolygonInstance`](https://docs.godotengine.org/en/latest/classes/class_navigationpolygoninstance.html) node.
-It uses the 2D navigation API to request a path between two points,
-and then traverses the resulting path.
+Example of using 2D navigation using:
+- [`NavigationRegion2D`](https://docs.godotengine.org/en/latest/classes/class_navigationregion2d.html)
+- [`NavigationPolygon`](https://docs.godotengine.org/en/latest/classes/class_navigationpolygon.html)
+- [`NavigationAgent2D`](https://docs.godotengine.org/en/latest/classes/class_navigationagent2d.html)
 
 Language: GDScript
 
-Renderer: GLES 2
+Renderer: Forward+
 
 Check out this demo on the asset library: https://godotengine.org/asset-library/asset/117
 

2d/navigation/character.png.import

@@ -16,9 +16,9 @@ dest_files=["res://.godot/imported/character.png-7a996d3b758d22c506b76a7c1539128
 [params]
 
 compress/mode=0
+compress/high_quality=false
 compress/lossy_quality=0.7
 compress/hdr_compression=1
-compress/bptc_ldr=0
 compress/normal_map=0
 compress/channel_pack=0
 mipmaps/generate=false

2d/navigation/character_navigation.gd

@@ -0,0 +1,27 @@
+extends CharacterBody2D
+
+
+var movement_speed: float = 200.0
+@onready var navigation_agent: NavigationAgent2D = $NavigationAgent2D
+
+
+func _ready():
+	# These values need to be adjusted for the actor's speed
+	# and the navigation layout.
+	navigation_agent.path_desired_distance = 2.0
+	navigation_agent.target_desired_distance = 2.0
+
+
+func set_movement_target(movement_target: Vector2):
+	navigation_agent.target_position = movement_target
+
+
+func _physics_process(_delta):
+	if navigation_agent.is_navigation_finished():
+		return
+
+	var current_agent_position: Vector2 = global_position
+	var next_path_position: Vector2 = navigation_agent.get_next_path_position()
+
+	velocity = current_agent_position.direction_to(next_path_position) * movement_speed
+	move_and_slide()

2d/navigation/map.png.import

@@ -16,9 +16,9 @@ dest_files=["res://.godot/imported/map.png-9eea34967fae34f4388f4a32a16da936.ctex
 [params]
 
 compress/mode=0
+compress/high_quality=false
 compress/lossy_quality=0.7
 compress/hdr_compression=1
-compress/bptc_ldr=0
 compress/normal_map=0
 compress/channel_pack=0
 mipmaps/generate=false

2d/navigation/navigation.gd

@@ -1,60 +1,21 @@
 extends Node2D
 
-@export var character_speed: float = 400.0
-var path = []
-
-@onready var character = $Character
-
-#var navmap = NavigationServer2D.map_create()
-
-
-func _ready():
-	pass
-	#NavigationServer2D.region_set_map(navmap, $NavigationRegion2d.get_rid())
-
-
-func _process(delta):
-	character.position = $NavigationAgent2d.get_next_location()
-	var walk_distance = character_speed * delta
-	#move_along_path(walk_distance)
+var drawpos = Vector2()
 
 
 # The "click" event is a custom input action defined in
 # Project > Project Settings > Input Map tab.
 func _unhandled_input(event):
 	if not event.is_action_pressed("click"):
 		return
-	_update_navigation_path(Vector2(), get_local_mouse_position())
+	navigate_to(get_local_mouse_position())
 
-#func move_along_path(distance):
-#	return
-#	var last_point = character.position
-#	while path.size():
-#		var distance_between_points = last_point.distance_to(path[0])
-#		# The position to move to falls between two points.
-#		if distance <= distance_between_points:
-#			character.position = last_point.lerp(path[0], distance / distance_between_points)
-#			return
-#		# The position is past the end of the segment.
-#		distance -= distance_between_points
-#		last_point = path[0]
-#		path.remove(0)
-#	# The character reached the end of the path.
-#	character.position = last_point
-#	set_process(false)
 
-var drawpos = Vector2()
-func _update_navigation_path(start_position, end_position):
-	# get_simple_path is part of the Node2D class.
-	# It returns a PackedVector2Array of points that lead you
-	# from the start_position to the end_position.
-	$NavigationAgent2d.set_target_location(end_position)
-	drawpos = end_position
+func navigate_to(pos):
+	$Character/NavigationAgent2D.target_position = pos
+	drawpos = pos
 	queue_redraw()
-	# The first point is always the start_position.
-	# We don't need it in this example as it corresponds to the character's position.
-	#path.remove(0)
-	#set_process(true)
+
 
 func _draw():
-	draw_circle(drawpos, 10, Color.RED)
+	draw_circle(drawpos, 5, Color.RED)

2d/navigation/navigation.tscn

@@ -0,0 +1,37 @@
+[gd_scene load_steps=7 format=3 uid="uid://bjgad00c2xiuc"]
+
+[ext_resource type="Script" path="res://navigation.gd" id="1_j3vjp"]
+[ext_resource type="Texture2D" uid="uid://bk26gi6qsuh18" path="res://map.png" id="2_nxfkp"]
+[ext_resource type="NavigationPolygon" uid="uid://bk5r48dcijlqt" path="res://navigation_polygon.res" id="3_6c0vu"]
+[ext_resource type="Script" path="res://character_navigation.gd" id="3_abq88"]
+[ext_resource type="Texture2D" uid="uid://b0wokaenwu7pj" path="res://character.png" id="4_55b5j"]
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_7hahy"]
+radius = 7.0
+height = 22.0
+
+[node name="Navigation" type="Node2D"]
+script = ExtResource("1_j3vjp")
+
+[node name="Map" type="Sprite2D" parent="."]
+z_index = -1
+position = Vector2(400, 302)
+texture = ExtResource("2_nxfkp")
+
+[node name="NavigationRegion2D" type="NavigationRegion2D" parent="."]
+navigation_polygon = ExtResource("3_6c0vu")
+
+[node name="Character" type="CharacterBody2D" parent="."]
+position = Vector2(210, 138)
+script = ExtResource("3_abq88")
+
+[node name="Sprite2D" type="Sprite2D" parent="Character"]
+position = Vector2(0, -3)
+scale = Vector2(0.3, 0.3)
+texture = ExtResource("4_55b5j")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Character"]
+position = Vector2(0, -3)
+shape = SubResource("CapsuleShape2D_7hahy")
+
+[node name="NavigationAgent2D" type="NavigationAgent2D" parent="Character"]

2d/navigation/project.godot

@@ -14,10 +14,10 @@ config/name="Navigation Polygon 2D"
 config/description="Example of using 2D navigation using a NavigationPolygon in a
 NavigationPolygonInstance node. It uses the 2D navigation API to request
 a path between two points, and then traverses the resulting path."
-run/main_scene="res://level.tscn"
-config/features=PackedStringArray("4.0")
-config/icon="res://icon.webp"
 config/tags=PackedStringArray("2d", "ai", "demo", "official")
+run/main_scene="res://navigation.tscn"
+config/features=PackedStringArray("4.1")
+config/icon="res://icon.webp"
 
 [display]
 
@@ -29,7 +29,7 @@ window/stretch/aspect="expand"
 
 click={
 "deadzone": 0.5,
-"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":1,"pressed":false,"double_click":false,"script":null)
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":0,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":1,"canceled":false,"pressed":false,"double_click":false,"script":null)
 ]
 }