simple physics-controlled player script

PlayerController.gd

extends RigidBody

# Called when the node enters the scene tree for the first time.
func _ready():
	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _physics_process(delta):
	process_input(delta)

export var SPEED = 3000
export var JUMP = 300
var grounded = false
var allow_jump = true

func process_input(delta):
	var r = get_node("Rotator").rotation.y
	var s = 0
	if grounded:
		s = SPEED
	else:
		s = SPEED / 5
	if self.linear_velocity.length_squared() < 15:
		var f = Vector3.ZERO
		if Input.is_action_pressed("forward"):
			f += Vector3(0, 0, -1).rotated(Vector3(0, 1, 0), r)
		if Input.is_action_pressed("backward"):
			f += Vector3(0, 0, 1).rotated(Vector3(0, 1, 0), r)
		if Input.is_action_pressed("leftward"):
			f += Vector3(-1, 0, 0).rotated(Vector3(0, 1, 0), r)
		if Input.is_action_pressed("rightward"):
			f += Vector3(1, 0, 0).rotated(Vector3(0, 1, 0), r)
		self.add_central_force(f.normalized() * s * delta)
	if allow_jump and grounded and Input.is_action_pressed("jump"):
		grounded = false
		allow_jump = false
		self.physics_material_override.friction = 0
		self.apply_central_impulse(Vector3(0, JUMP * delta, 0))
	if !Input.is_action_pressed("jump"):
		allow_jump = true

func _input(event):
	if event is InputEventKey and event.is_pressed():
		if event.get_scancode() == KEY_ESCAPE:
			get_tree().quit()
	if event is InputEventMouseMotion and Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
		get_node("Rotator").rotate_y(deg2rad(-event.relative.x))
		get_node("Rotator/Camera").rotate_x(deg2rad(-event.relative.y))
		get_node("Rotator/Camera").rotation.x = clamp(get_node("Rotator/Camera").rotation.x, -PI/2, PI/2)

func _on_foot_body_entered(body):
	#print_debug(body == self)
	if body != self:
		self.physics_material_override.friction = 2
		grounded = true


func _on_Player_body_entered(body):
	if body != self && body != get_node("foot"):
		#print_debug(body.get_class())
		
		pass # Replace with function body.