Trois rivaux

Leçon 15 sur 20 du cours Jeu Godot : Circuit néon de Coddy.

Deux autres concurrents rejoignent la grille, l’un ambre et l’autre vert, chacun avec sa propre vitesse de pointe et sa voie. La course doit savoir quand chacun termine.

Les tours d’un concurrent correspondent à sa progression sur la longueur de la piste, arrondie à l’entier inférieur :

func laps_done() -> int:
	return int(progress / track.length)

Les concurrents appartiennent au groupe rivals. À chaque image, tout concurrent qui a effectué trois tours et ne figure pas encore dans la liste finished y est ajouté :

for rival in rivals:
	if rival.laps_done() >= LAPS and not finished.has(rival.name):
		finished.append(rival.name)

Défi

Facile

Dans rival.gd, ajoutez laps_done.
Dans race.gd, ajoutez var finished: Array[String] = [] et @onready var rivals: Array[Node] = get_tree().get_nodes_in_group("rivals").
Après check_progress(), ajoutez la boucle ci-dessus.

Essayez vous-même

extends Node2D

@export var accel := 260.0
@export var max_speed := 200.0
@export var turn_speed := 3.2
@export var drag := 0.6
@export var grip := 7.0

var velocity := Vector2.ZERO
var boost_time := 0.0
var boost_charge := 0.0
var active := true

@onready var track: Node2D = $"../Track"


func _physics_process(delta: float) -> void:
	var throttle := 0.0
	var steer := 0.0
	if active:
		throttle = Input.get_axis("move_down", "move_up")
		steer = Input.get_axis("move_left", "move_right")
		if Input.is_action_just_pressed("action") and boost_charge >= 1.0:
			boost_charge = 0.0
			boost_time = 1.0
	boost_charge = minf(1.0, boost_charge + delta / 10.0)
	$"../HUD/Boost".scale.x = boost_charge

	var forward := Vector2.RIGHT.rotated(rotation)
	var speed := velocity.dot(forward)
	var top := max_speed
	var grip_now := grip
	if boost_time > 0.0:
		boost_time -= delta
		top = max_speed * 1.3
		velocity += forward * accel * delta
	for pad in get_tree().get_nodes_in_group("boost_pads"):
		if position.distance_to(pad.position) < 22.0:
			boost_time = maxf(boost_time, 0.4)
	for oil in get_tree().get_nodes_in_group("oil"):
		if position.distance_to(oil.position) < 20.0:
			grip_now = grip * 0.12
	if not track.is_on_road(position):
		top = max_speed * 0.45
		velocity *= 1.0 - 2.5 * delta

	if throttle < 0.0 and speed > 10.0:
		velocity += forward * throttle * accel * 1.6 * delta
	else:
		velocity += forward * throttle * accel * delta
	rotation += steer * turn_speed * delta * clampf(absf(speed) / 90.0, 0.0, 1.0) * signf(speed + 0.01)

	var side := forward.orthogonal()
	velocity -= side * velocity.dot(side) * minf(1.0, grip_now * delta)
	velocity *= 1.0 - drag * delta
	if velocity.length() > top:
		velocity = velocity.move_toward(velocity.limit_length(top), accel * 2.0 * delta)
	position += velocity * delta
	$Exhaust.emitting = throttle > 0.0 or boost_time > 0.0
	$Flame.visible = boost_time > 0.0