friction and sand pit

objects/canny_cat.gd

@@ -11,6 +11,8 @@ extends CharacterBody3D
 @export_group("Movement")
 @export var gravity: float
 @export var friction: float
+@export var friction_coef: float
+@export var friction_pow: float
 @export var stop_threshold: float
 
 @export_group("Camera", "camera_")
@@ -101,13 +103,18 @@ func _apply_gravity(delta: float) -> void:
 
 func _slow_to_stop(delta: float) -> void:
 	if is_on_floor():
-		var new_velocity = velocity
-		new_velocity.y = 0.0
+		var new_velocity = velocity * Vector3(1.0, 0.0, 1.0)
+		
+		#new_velocity = lerp(new_velocity, Vector3.ZERO, friction_coef * delta)
+		#new_velocity = lerp(
+			#new_velocity, Vector3.ZERO,
+			#power_scale * pow(friction_coef / new_velocity.length(), friction_pow * delta)
+		#)
 		new_velocity = new_velocity.move_toward(Vector3.ZERO, friction * delta)
 		if new_velocity.length_squared() <= stop_threshold * stop_threshold:
 			new_velocity = Vector3.ZERO
-		new_velocity.y = velocity.y
-		velocity = new_velocity
+		velocity.x = new_velocity.x
+		velocity.z = new_velocity.z
 
 func _bounce_on_walls(delta: float = 0.0) -> void:
 	var h_vel = (prev_velocity * Vector3(1.0, 0.0, 1.0))

objects/canny_cat.tscn

@@ -45,7 +45,9 @@ power_scale = 20.0
 power_sensitivity = 0.01
 power_threshold = 0.2
 gravity = 10.0
-friction = 5.0
+friction = 10.0
+friction_coef = 0.01
+friction_pow = 60.0
 stop_threshold = 0.1
 camera_low_angle = 0.349066
 camera_high_angle = 1.0472

objects/sand_pit.gd

@@ -0,0 +1,30 @@
+extends CSGPolygon3D
+
+
+@export var friction: float
+
+@export_group("Node References")
+@export var collision_polygon: CollisionPolygon3D
+
+
+var _players: Array[Player] = []
+
+
+func _ready() -> void:
+	collision_polygon.polygon = polygon
+	collision_polygon.depth = depth
+
+
+func _physics_process(delta: float) -> void:
+	for player in _players:
+		player.velocity = lerp(player.velocity, Vector3.ZERO, friction * delta)
+
+
+func _on_body_entered(body: Node3D) -> void:
+	if body is Player:
+		_players.append(body)
+
+
+func _on_body_exited(body: Node3D) -> void:
+	if body is Player:
+		_players.erase(body)

objects/sand_pit.tscn

@@ -0,0 +1,31 @@
+[gd_scene load_steps=4 format=3 uid="uid://bfic5n608nc5j"]
+
+[ext_resource type="Texture2D" uid="uid://djx2x3jjn01w2" path="res://assets/textures/world/sand.png" id="1_yg8om"]
+[ext_resource type="Script" path="res://objects/sand_pit.gd" id="2_vtyum"]
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_r0cip"]
+shading_mode = 2
+specular_mode = 2
+albedo_texture = ExtResource("1_yg8om")
+metallic_specular = 0.0
+uv1_triplanar = true
+uv1_world_triplanar = true
+texture_filter = 0
+
+[node name="SandPit" type="CSGPolygon3D" node_paths=PackedStringArray("collision_polygon")]
+process_physics_priority = 100
+transform = Transform3D(1, 0, 0, 0, -4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 0)
+depth = 0.03
+material = SubResource("StandardMaterial3D_r0cip")
+script = ExtResource("2_vtyum")
+friction = 9.0
+collision_polygon = NodePath("Area3D/CollisionPolygon3D")
+
+[node name="Area3D" type="Area3D" parent="."]
+collision_layer = 0
+collision_mask = 16
+
+[node name="CollisionPolygon3D" type="CollisionPolygon3D" parent="Area3D"]
+
+[connection signal="body_entered" from="Area3D" to="." method="_on_body_entered"]
+[connection signal="body_exited" from="Area3D" to="." method="_on_body_exited"]