Enemy.gd

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`b856550a` 2023-10-30 Pavel Safronov	1	extends KinematicBody2D
`f398dcb9` 2023-11-02 Pavel Safronov	2	class_name Enemy
`b856550a` 2023-10-30 Pavel Safronov	3
	4	onready var ray_cast_2d: RayCast2D = $RayCast2D
`cf2013fa` 2023-11-02 Pavel Safronov	5	onready var damage_points = $DamagePoints
`5b18ed86` 2023-11-01 Pavel Safronov	6	const Utils = preload("res://Utils.gd")
	7	const Explosion = preload("res://Explosion.tscn")
`cf2013fa` 2023-11-02 Pavel Safronov	8	const Smoke = preload("res://Smoke.tscn")
`b856550a` 2023-10-30 Pavel Safronov	9
`ad6f22a5` 2023-11-02 Pavel Safronov	10	export var move_speed = 40
`09081ce6` 2023-11-06 Pavel Safronov	11	export var turn_rate = 0.01
`e9f8f8f2` 2023-11-01 Pavel Safronov	12	export var health = -1
`b856550a` 2023-10-30 Pavel Safronov	13	export var max_health = 10
`1d4ba5a6` 2023-11-02 Pavel Safronov	14	export var is_targeted = false
`52220002` 2023-11-06 Pavel Safronov	15	export var is_invincible = false
`5b18ed86` 2023-11-01 Pavel Safronov	16	signal enemy_killed
`b856550a` 2023-10-30 Pavel Safronov	17
	18	var velocity = Vector2.ZERO
	19	var dead = false
	20
`e9f8f8f2` 2023-11-01 Pavel Safronov	21	func _ready() -> void:
`539576dd` 2023-11-07 Pavel Safronov	22	$AnimationPlayer.play("fade_in")
`cf2013fa` 2023-11-02 Pavel Safronov	23	if health < 0 or health > max_health:
`e9f8f8f2` 2023-11-01 Pavel Safronov	24	health = max_health
`cf2013fa` 2023-11-02 Pavel Safronov	25	else:
	26	var hurt_points = max_health - health
	27	health = max_health
	28	for i in hurt_points:
	29	hurt()
`e9f8f8f2` 2023-11-01 Pavel Safronov	30
`236d1677` 2023-11-01 Pavel Safronov	31	func _process(_delta: float) -> void:
`614e7fb1` 2023-10-31 Pavel Safronov	32	$Graphics/Alive/Container/HealthLabel.text = "%s / %s" % [health, max_health]
	33	$Graphics/Alive/Container.global_rotation = 0
`1d4ba5a6` 2023-11-02 Pavel Safronov	34	$Graphics/Alive/Target.visible = is_targeted
`1b4613d1` 2023-11-06 Pavel Safronov	35	$Graphics/Alive/Target.global_rotation = 0
`614e7fb1` 2023-10-31 Pavel Safronov	36
`8c2ffd3f` 2023-11-02 Pavel Safronov	37	func _physics_process(_delta: float) -> void:
`b856550a` 2023-10-30 Pavel Safronov	38	if dead:
	39	return
`e496c548` 2023-11-06 Pavel Safronov	40
	41	velocity = move_and_slide(velocity)
	42	global_rotation = velocity.angle() + PI/2.0
	43
`b856550a` 2023-10-30 Pavel Safronov	44	var ray_length = ray_cast_2d.cast_to.length()
`f398dcb9` 2023-11-02 Pavel Safronov	45	if ray_cast_2d.is_colliding():
`e496c548` 2023-11-06 Pavel Safronov	46	var players = get_tree().get_nodes_in_group("player")
	47	var player: Player = players[0]
	48	var dist_to_player = global_position.distance_to(player.global_position)
`f398dcb9` 2023-11-02 Pavel Safronov	49	if ray_cast_2d.get_collider() == player and dist_to_player < (ray_length + 5):
	50	player.hurt(2)
	51	var explosion = Explosion.instance()
	52	explosion.transform = transform
	53	get_parent().add_child(explosion)
	54	kill()
`b856550a` 2023-10-30 Pavel Safronov	55
`e496c548` 2023-11-06 Pavel Safronov	56	func turn_towards(pos: Vector2):
	57	var to_dir = (pos - global_position).normalized()
	58	var curr_dir = velocity.normalized()
	59	var dir_diff = to_dir - curr_dir
`09081ce6` 2023-11-06 Pavel Safronov	60	var change = dir_diff.normalized() * turn_rate * move_speed
`e496c548` 2023-11-06 Pavel Safronov	61	velocity = (velocity + change).normalized() * move_speed
	62
`b856550a` 2023-10-30 Pavel Safronov	63	func hurt():
`52220002` 2023-11-06 Pavel Safronov	64	if dead \|\| is_invincible:
`b856550a` 2023-10-30 Pavel Safronov	65	return
	66	health -= 1
`cf2013fa` 2023-11-02 Pavel Safronov	67	var smoke = Smoke.instance()
	68	var smoke_pos = get_damage_point_on_body()
	69	smoke.position = smoke_pos
	70	add_child(smoke)
`b856550a` 2023-10-30 Pavel Safronov	71	if health <= 0:
	72	kill()
	73
	74	func kill():
`52220002` 2023-11-06 Pavel Safronov	75	if dead \|\| is_invincible:
`b856550a` 2023-10-30 Pavel Safronov	76	return
	77	dead = true
	78	$Graphics/Alive.hide()
`969fd5af` 2023-11-06 Pavel Safronov	79	$CollisionPolygon2D.set_deferred("disabled", true)
`c6faad15` 2023-10-31 Pavel Safronov	80	var explosion = Explosion.instance()
	81	explosion.connect("explosion_done", self, "_on_death_explosion_finished")
	82	$Graphics.add_child(explosion)
`b856550a` 2023-10-30 Pavel Safronov	83	z_index = -1
`5b18ed86` 2023-11-01 Pavel Safronov	84	emit_signal("enemy_killed")
`c6faad15` 2023-10-31 Pavel Safronov	85
	86	func _on_death_explosion_finished():
`cf2013fa` 2023-11-02 Pavel Safronov	87	$AnimationPlayer.play("fade_out")
	88
	89	func get_damage_point_on_body() -> Vector2:
	90	var child_count = damage_points.get_child_count()
	91	var random_index = randi() % child_count
	92	var random_child: Position2D = damage_points.get_child(random_index)
	93	return random_child.position
`969fd5af` 2023-11-06 Pavel Safronov	94
	95	func remove_thyself():
	96	queue_free()
`115aa5d1` 2023-11-07 Pavel Safronov	97
	98	func _on_Area2D_body_entered(body: Node) -> void:
	99	var players = get_tree().get_nodes_in_group("player")
	100	var player: Player = players[0]
	101	var is_player = body == player
	102	if is_player:
	103	player.hurt(2)
	104	var explosion = Explosion.instance()
	105	explosion.transform = transform
	106	get_parent().add_child(explosion)
	107	kill()
	108