add a Player with basic movement

scripts/player.gd

@@ -0,0 +1,98 @@
+class_name Player
+extends CharacterBody3D
+
+const MOVE_SPEED: float = 5
+const MOVE_ACCELERATION: float = 25
+const MOVE_DECELERATION: float = 25
+
+const JUMP_FORCE: float = 10
+const FALL_SPEED: float = 20
+const FALL_ACCELERATION: float = 25
+
+@export var _respawn_height: float = -100
+
+var _respawn_point: Vector3
+
+@onready var _camera: Camera3D = $Camera3D
+
+
+func _ready() -> void:
+	_respawn_point = global_position
+
+
+func _process(_delta: float) -> void:
+	if global_position.y < _respawn_height:
+		global_position = _respawn_point
+		velocity = Vector3.ZERO
+
+
+func _physics_process(delta: float) -> void:
+	_lateral_movement(delta)
+	_vertical_movement(delta)
+
+	_jumping(delta)
+
+	move_and_slide()
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventMouseMotion:
+		var mouse_event := event as InputEventMouseMotion
+		rotate_y(-mouse_event.screen_relative.x * 0.005)
+		_camera.rotate_x(-mouse_event.screen_relative.y * 0.005)
+		_camera.rotation.x = clamp(_camera.rotation.x, -PI / 2, PI / 2)
+
+	if Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
+		if event is InputEventMouseMotion:
+			var mouse_event := event as InputEventMouseMotion
+			var sensitivity := deg_to_rad(Settings.mouse_sensitivity)
+
+			rotate_y(
+				(
+					-mouse_event.screen_relative.x
+					* sensitivity
+					* (-1 if Settings.invert_mouse_horizontal else 1)
+				)
+			)
+
+			_camera.rotate_x(
+				(
+					-mouse_event.screen_relative.y
+					* sensitivity
+					* (-1 if Settings.invert_mouse_vertical else 1)
+				)
+			)
+			_camera.rotation.x = clamp(_camera.rotation.x, -PI / 2, PI / 2)
+
+
+func _lateral_movement(delta: float) -> void:
+	var input_dir := Input.get_vector(
+		"move_left", "move_right", "move_forward", "move_back"
+	)
+	var has_input := input_dir.length() > 0
+
+	if has_input:
+		var direction := (
+			(transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
+		)
+		var new_velocity := direction * MOVE_SPEED
+		new_velocity.y = velocity.y
+		velocity = velocity.move_toward(new_velocity, MOVE_ACCELERATION * delta)
+	else:
+		var new_velocity := Vector3.ZERO
+		new_velocity.y = velocity.y
+		velocity = velocity.move_toward(new_velocity, MOVE_DECELERATION * delta)
+
+
+func _vertical_movement(delta: float) -> void:
+	if not is_on_floor():
+		var new_velocity := velocity
+		new_velocity.y = -FALL_SPEED
+		velocity = velocity.move_toward(new_velocity, FALL_ACCELERATION * delta)
+	else:
+		velocity.y = 0
+
+
+func _jumping(_delta: float) -> void:
+	if Input.is_action_just_pressed("jump") and is_on_floor():
+		velocity.y = JUMP_FORCE