Enemy.gd

1	extends KinematicBody2D
2
3	onready var ray_cast_2d: RayCast2D = $RayCast2D
4	onready var scene_tree: SceneTree = get_tree()
5	const utils = preload("res://Utils.gd")
6	var Explosion = preload("res://Explosion.tscn")
7
8	export var move_speed = 100
9	export var health: int = randi() % 8 + 2
10	export var max_health = 10
11
12	var velocity = Vector2.ZERO
13
14	var dead = false
15
16	func _process(delta: float) -> void:
17	$Graphics/Alive/Container/HealthLabel.text = "%s / %s" % [health, max_health]
18	$Graphics/Alive/Container.global_rotation = 0
19
20	func _physics_process(delta: float) -> void:
21	if dead:
22	return
23	var players = scene_tree.get_nodes_in_group("player")
24	var player: KinematicBody2D = players[0]
25	var dist_to_player = global_position.distance_to(player.global_position)
26
27	var dir_to_player = global_position.direction_to(player.global_position)
28	var angle_to_player = dir_to_player.angle() + PI / 2.0
29	var vel = dir_to_player * move_speed
30	global_rotation = angle_to_player
31	velocity = move_and_slide(vel)
32
33	var ray_length = ray_cast_2d.cast_to.length()
34	if ray_cast_2d.is_colliding() and ray_cast_2d.get_collider() == player and dist_to_player < (ray_length + 5):
35	player.hurt()
36	var push = to_global(ray_cast_2d.cast_to) - to_global(Vector2.ZERO)
37	player.position += (push * 2)
38	player.velocity = player.move_and_slide(player.velocity)
39
40	func hurt():
41	if dead:
42	return
43	utils.log("zombie is hurt, health was ", health)
44	health -= 1
45	if health <= 0:
46	kill()
47
48	func kill():
49	if dead:
50	return
51	utils.log("zombie is dead")
52	dead = true
53	$Graphics/Alive.hide()
54	var explosion = Explosion.instance()
55	explosion.connect("explosion_done", self, "_on_death_explosion_finished")
56	$Graphics.add_child(explosion)
57	$CollisionPolygon2D.disabled = true
58	z_index = -1
59
60	func _on_death_explosion_finished():
61	utils.log("removing zombie after explosion finished")
62	queue_free()