Simple Spaceship Propellant Motion

spaceship.gd

# stolen from Discord's igalencar's message in #programming channel
extends KinematicBody2D

const MAX_SPEED = 300
const MAX_FORCE = 0.02
var velocity = Vector2()
onready var target = get_position()

func _ready():

    pass

func _process(delta):
    velocity = steer(target)
    move_and_collide(velocity * delta)
    target = get_viewport().get_mouse_position()
    pass

func steer(target):
    var desired_velocity = Vector2(target - get_position()).normalized()* MAX_SPEED
    var steer = desired_velocity - velocity
    var target_velocity = velocity + (steer * MAX_FORCE)
    return(target_velocity)

    pass