Godot Player Script

#the player script

extends KinematicBody

var active = true

var y_velo = 0

func _physics_process(_delta):
    if active:
        show()
        $CollisionShape.disabled = false
        $Camera.make_current()
        movement()
    elif !active:
        hide()
        $CollisionShape.disabled = true
        pass

    pass

func movement():
    var move_speed = 10
    var jump_force = 35
    var rotate_speed = 2

    var gravity = 1.2
    var max_fall_speed = 20

    var move_vec = Vector3()
    if Input.is_key_pressed(KEY_W):
        move_vec.z -= 1
    if Input.is_key_pressed(KEY_S):
        move_vec.z += 1
    if Input.is_key_pressed(KEY_D):
        self.rotate_y(deg2rad(-rotate_speed))
    if Input.is_key_pressed(KEY_A):
        self.rotate_y(deg2rad(rotate_speed))

    move_vec = move_vec.normalized()
    move_vec = move_vec.rotated(Vector3(0, 1, 0), rotation.y)
    move_vec *= move_speed
    move_vec.y = y_velo
    move_and_slide(move_vec, Vector3(0, 1, 0))

    var grounded = is_on_floor()
    y_velo -= gravity
    if grounded and y_velo <= 0:
        y_velo = -0.1
    if y_velo < max_fall_speed:
        y_velo = -max_fall_speed