extends VehicleBody

# Member variables
var shotscene = preload("res://tank-round.tscn")
const STEER_SPEED = .25
const STEER_LIMIT = .3

var steer_angle = 0
var steer_target = 0
var view_sensitivity = 0.1;

export var engine_force = 20


func _fixed_process(delta):
	if (Input.is_action_pressed("ui_left")):
		steer_target = -STEER_LIMIT
	elif (Input.is_action_pressed("ui_right")):
		steer_target = STEER_LIMIT
	else:
		steer_target = 0
	
	if (Input.is_action_pressed("ui_up")):
		set_engine_force(engine_force)
	else:
		set_engine_force(0)
	
	if (Input.is_action_pressed("ui_down")):
		#set_brake(1)
		set_engine_force(-engine_force)
	
	if (Input.is_action_pressed("driver_break")):
		set_brake(1.0)
	else:
		set_brake(0.0)
	
	if (steer_target < steer_angle):
		steer_angle -= STEER_SPEED*delta
		if (steer_target > steer_angle):
			steer_angle = steer_target
	elif (steer_target > steer_angle):
		steer_angle += STEER_SPEED*delta
		if (steer_target < steer_angle):
			steer_angle = steer_target
	
	set_steering(steer_angle)

func _enter_tree():
	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED);

func _ready():
	set_fixed_process(true)
	set_process_input(true)
	
func _input(ie):
	if ie.type == InputEvent.MOUSE_MOTION:
		var turret = get_node("Turret")
		var cannon = get_node("Turret/Cannon")
		#var pitch = rad2deg(camera.get_rotation().x)
		#print(cannon.get_rotation())
		var plus_pitch = view_sensitivity * -ie.relative_y
		var plus_yaw = fmod(view_sensitivity * ie.relative_x,360)
		var can_rot = cannon.get_rotation()
		can_rot.z -= deg2rad(plus_pitch)
		var can_elev = rad2deg(can_rot.z)
		if can_elev < 7 and can_elev > -30:
			cannon.set_rotation(can_rot)
		turret.rotate(Vector3(0,1,0), deg2rad(plus_yaw))
		#cannon.rotate(Vector3(0,0,1), deg2rad(plus_pitch))
		#print(deg2rad(plus_pitch))
		#print(rad2deg(cannon.get_rotation().z))
		#print(turret.get_rotation())
		
	elif ie.type == InputEvent.MOUSE_BUTTON:
		if ie.button_index == BUTTON_LEFT and ie.is_pressed():
			print("LEFT CLICK")
			var shot = shotscene.instance()
			get_parent().add_child(shot)
			#shot.set_pos(Vector3(0,0,0))
			shot.set_linear_velocity(Vector3(0,0,100))