new terrain plugin

demo/src/CameraManager.gd

@@ -0,0 +1,29 @@
+extends Node3D
+
+const CAMERA_MAX_PITCH: float = deg_to_rad(70)
+const CAMERA_MIN_PITCH: float = deg_to_rad(-89.9)
+const CAMERA_RATIO: float = .625
+
+@export var mouse_sensitivity: float = .002
+@export var mouse_y_inversion: float = -1.0
+
+@onready var _camera_yaw: Node3D = self
+@onready var _camera_pitch: Node3D = %Arm
+
+
+func _ready() -> void:
+	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
+
+
+func _input(p_event: InputEvent) -> void:
+	if p_event is InputEventMouseMotion and Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
+		rotate_camera(p_event.relative)
+		get_viewport().set_input_as_handled()
+		return
+
+
+func rotate_camera(p_relative:Vector2) -> void:
+	_camera_yaw.rotation.y -= p_relative.x * mouse_sensitivity
+	_camera_yaw.orthonormalize()
+	_camera_pitch.rotation.x += p_relative.y * mouse_sensitivity * CAMERA_RATIO * mouse_y_inversion 
+	_camera_pitch.rotation.x = clamp(_camera_pitch.rotation.x, CAMERA_MIN_PITCH, CAMERA_MAX_PITCH)