Relative character movement

src/player/player.gd

@@ -1,31 +1,48 @@
 extends CharacterBody3D
 
-
-const SPEED = 5.0
-const JUMP_VELOCITY = 4.5
+const TARGET_FPS: float = 60.0
+const BASE_SPEED: float = 5.0
+const JUMP_FORCE: float = 4.5
+const FRICTION: float = 0.3
+const AIR_DRAG: float = 0.03
+const INPUT_SENSITIVITY: float = 0.7
+const TURN_SENSITIVITY: float = 0.08
 
 # Get the gravity from the project settings to be synced with RigidBody nodes.
 var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")
 
+@onready var camera_root: Node3D = $CameraRoot
+@onready var mesh: Node3D = $Mesh
+
 
 func _physics_process(delta: float) -> void:
+	var delta_factor: float = delta * TARGET_FPS
+
 	# Add the gravity.
 	if not is_on_floor():
 		velocity.y -= gravity * delta
 
 	# Handle jump.
 	if Input.is_action_just_pressed("jump") and is_on_floor():
-		velocity.y = JUMP_VELOCITY
+		velocity.y = JUMP_FORCE
 
 	# Get the input direction and handle the movement/deceleration.
-	# As good practice, you should replace UI actions with custom gameplay actions.
-	var input_dir := Input.get_vector("left", "right", "forward", "backward")
-	var direction := (transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
-	if direction:
-		velocity.x = direction.x * SPEED
-		velocity.z = direction.z * SPEED
-	else:
-		velocity.x = move_toward(velocity.x, 0, SPEED)
-		velocity.z = move_toward(velocity.z, 0, SPEED)
+	var input_dir: Vector2 = Input.get_vector("left", "right", "forward", "backward")
+	if input_dir:
+		var movement: Vector3 = (
+			camera_root.global_transform.basis * Vector3(input_dir.x, 0, input_dir.y) * -1
+			).normalized()
+		velocity.x = lerpf(velocity.x, movement.x * BASE_SPEED, delta_factor * INPUT_SENSITIVITY)
+		velocity.z = lerpf(velocity.z, movement.z * BASE_SPEED, delta_factor * INPUT_SENSITIVITY)
+
+		mesh.rotation.y = lerp_angle(
+			mesh.rotation.y,
+			atan2(movement.x, movement.z),
+			delta_factor * TURN_SENSITIVITY
+		)
+
+	var drag: float = FRICTION if is_on_floor() else AIR_DRAG
+	velocity.x = lerpf(velocity.x, 0.0, delta_factor * drag)
+	velocity.z = lerpf(velocity.z, 0.0, delta_factor * drag)
 
 	move_and_slide()

src/player/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=8 format=3 uid="uid://bqp5mwyat3asv"]
+[gd_scene load_steps=7 format=3 uid="uid://bqp5mwyat3asv"]
 
 [ext_resource type="Script" path="res://src/player/player.gd" id="1_h16ke"]
 [ext_resource type="Texture2D" uid="uid://b0yefajw1cqo" path="res://assets/textures/character_placeholder.png" id="1_iys0p"]
@@ -11,8 +11,6 @@ albedo_texture = ExtResource("1_iys0p")
 
 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_otw5j"]
 
-[sub_resource type="SphereShape3D" id="SphereShape3D_jv2hv"]
-
 [node name="Player" type="CharacterBody3D"]
 script = ExtResource("1_h16ke")
 
@@ -27,13 +25,12 @@ surface_material_override/0 = SubResource("StandardMaterial3D_dd4i1")
 shape = SubResource("CapsuleShape3D_otw5j")
 
 [node name="CameraRoot" type="Node3D" parent="."]
-transform = Transform3D(1, 0, 0, 0, 0.866025, -0.5, 0, 0.5, 0.866025, 0, 0.5, 0)
+transform = Transform3D(1, 0, 0, 0, 0.965926, -0.258819, 0, 0.258819, 0.965926, 0, 1, 0)
 script = ExtResource("3_gichr")
 
 [node name="SpringArm3D" type="SpringArm3D" parent="CameraRoot"]
-transform = Transform3D(-1, 0, 8.74228e-08, 0, 1, 0, -8.74228e-08, 0, -1, 0, 0, 0)
-shape = SubResource("SphereShape3D_jv2hv")
-spring_length = 3.0
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1, 0, 0)
+spring_length = -1.5
 
 [node name="Camera3D" type="Camera3D" parent="CameraRoot/SpringArm3D"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 3)
+transform = Transform3D(-1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 0, 0, -1.5)

src/player/third_person_camera.gd

@@ -10,7 +10,7 @@ extends Node3D
 @export_range(-90.0, 90.0) var pitch_max: float = 75.0
 @export var invert_pitch: bool = false
 
-@onready var _target: Vector2 = Vector2(rotation_degrees.x, rotation_degrees.y)
+@onready var _target: Vector2 = Vector2(global_rotation_degrees.x, rotation_degrees.y)
 
 func _ready() -> void:
 	Input.mouse_mode = Input.MOUSE_MODE_CAPTURED