I have not used it myself, but the Godot Documentation on using 3D Transforms has some code for rotating the camera around based on mouse movement.
All the code is missing is allowing movement, which should be something like this:
# Rotation accumulators on the X and Y axis
# (This is part of the documentation code)
var rot_x = 0
var rot_y = 0
# The variables below may need adjusting...
# Movement speed
const MOVE_SPEED = 2
# Rotation speed/sensitivity
# (The documentation does not define this constant, so
# I have no idea what it should be set to. I'm assuming a small value)
const LOOKAROUND_SPEED = 0.1
# A boolean to track whether the right mouse button is down or not.
var is_right_mouse_button_down = false
func _process(delta):
# The code below could be done in _input, but then it is a tad harder
# to use input actions.
if is_right_mouse_button_down == true:
# Move the camera based on the key pressed
if Input.is_action_pressed("ui_left"):
translate(Vector3.LEFT * delta * MOVE_SPEED)
if Input.is_action_pressed("ui_right"):
translate(Vector3.RIGHT * delta * MOVE_SPEED)
if Input.is_action_pressed("ui_up"):
translate(Vector3.FORWARD * delta * MOVE_SPEED)
if Input.is_action_pressed("ui_down"):
translate(Vector3.BACKWARD * delta * MOVE_SPEED)
func _input(event):
if event is InputEventMouseMotion:
# Only rotate if the right mouse button is down...
if is_right_mouse_button_down == true:
# (The code below is from the documentation)
# modify accumulated mouse rotation
rot_x += event.relative.x * LOOKAROUND_SPEED
rot_y += event.relative.y * LOOKAROUND_SPEED
transform.basis = Basis() # reset rotation
rotate_object_local(Vector3(0, 1, 0), rot_x) # first rotate in Y
rotate_object_local(Vector3(1, 0, 0), rot_y) # then rotate in X
# check whether the right mouse button is down...
if event is InputEventMouseButton:
if event.button_index == BUTTON_RIGHT:
is_right_mouse_button_down = event.pressed
I have not tested the code, but I think it should work.
Hopefully this helps :smile:
