Simple implementation of input controls for 3D object movement in godot.

The usual implementation of player movement in games is made in the "update" or "physics/process" functions which are called once per frame.

This makes sense for everything physics related, object movement included, however i wanted to find a way to keep these functions as clean and readable as possible.

Avoiding having to check for user input on every frame. Here is an approach that uses signals/events instead.

In the physics/process function we will be applying a costant force to the object in axis, X Y & Z.

The applied force will always be 0 in any direction:

apply_central_force(align_force * m_input * 1200.0 * delta)

The value of the applied force on each axis will be changed by the events/signals recieved from the user.

eg.

if event.is_action_pressed("move_left") || event.is_action_pressed("move_right"):
	m_input.x = Input.get_axis("move_left", "move_right")
if event.is_action_released("move_left") || event.is_action_released("move_right"):
	m_input.x = Input.get_axis("move_left", "move_right")

the get_axis() function will return a value of -1, 0 or 1 depending on the the event that took place, left or right, front or back, or 0 if none.

This script also includes an horizontal rotation function for a camera object '$TwistPivot'.

The force applied forward will always match with the direction the camera is facing:

view_pos = $TwistPivot align_force = view_pos.basis