71 lines
2.4 KiB
GDScript
71 lines
2.4 KiB
GDScript
extends State
|
|
|
|
## Shortcut to get_parent().get_parent()
|
|
@onready var ship = get_parent().get_parent()
|
|
## Shortcut to current scene
|
|
@onready var star_system = get_tree().current_scene
|
|
## Timer which randomizes destination
|
|
@onready var update_timer = $UpdateDestination
|
|
## Radius in which ship will transit to attack state
|
|
@export var search_distance: float = 1024.0
|
|
## Ship will strive to achieve this angle
|
|
var destination_degrees: float = 0:
|
|
set(value):
|
|
if value > 180:
|
|
destination_degrees = value - 360
|
|
elif value < -180:
|
|
destination_degrees = 360 + value
|
|
else:
|
|
destination_degrees = value
|
|
## Delta to destination_degrees
|
|
var destination_difference: float = 1.0
|
|
|
|
var current_destination_difference: float:
|
|
set(value):
|
|
if value > 180:
|
|
current_destination_difference = value - 360
|
|
else:
|
|
current_destination_difference = value
|
|
## available map bounds (use with absolute position)
|
|
var available_bounds: Vector2
|
|
# for testing purposes only
|
|
var player_ship: PlayerShip = null
|
|
|
|
func _ready():
|
|
available_bounds = Vector2(star_system.width / 2, star_system.height / 2)
|
|
randomize()
|
|
|
|
func enter(_message):
|
|
update_timer.start()
|
|
get_tree().create_timer(0.02).timeout.connect(get_player_ship)
|
|
update_destination()
|
|
|
|
func process(_delta):
|
|
# checking if need to apply torque
|
|
current_destination_difference = destination_degrees - ship.hull.global_rotation_degrees
|
|
if abs(current_destination_difference) > destination_difference:
|
|
ship.engine.rotation_axis = clamp(current_destination_difference / 360 + 0.5 * sign(current_destination_difference), -1.0, 1.0)
|
|
else:
|
|
ship.engine.rotation_axis = 0.0
|
|
# making ship always accelerate
|
|
ship.engine.acceleration_axis = 1.0
|
|
# if ship is out of star system bounds, set destination angle to center
|
|
if abs(ship.global_position.x) > available_bounds.x or abs(ship.global_position.y) > available_bounds.y:
|
|
destination_degrees = rad_to_deg(ship.global_position.angle_to_point(Vector2.ZERO))
|
|
# if distance to player is less than scan radius
|
|
# TODO: rewrite this to more complex behavior
|
|
if player_ship != null:
|
|
var distance_to_player = ship.global_position.distance_to(player_ship.position)
|
|
if distance_to_player <= search_distance:
|
|
get_parent().transit("AttackState", {"target": player_ship})
|
|
|
|
|
|
func exit():
|
|
update_timer.stop()
|
|
|
|
## Set new random direction
|
|
func update_destination():
|
|
destination_degrees += randi_range(-180, 180)
|
|
|
|
func get_player_ship():
|
|
player_ship = star_system.player_ship
|