World.gd

1	extends Node2D
2
3	const Utils = preload("res://Utils.gd")
4	const Enemy = preload("res://Enemy.tscn")
5	export var enemy_count = 4
6	var destination: Vector2
7	var is_destination_set = false
8
9	func _ready() -> void:
10	for n in enemy_count:
11	add_new_enemy(true)
12
13	func _on_enemy_killed() -> void:
14	$CanvasLayer/HUD.score += 1
15	# use call_deferred to ensure that this happens after the collision has been processed
16	call_deferred("add_new_enemy")
17
18	func add_new_enemy(should_be_visible: bool = false) -> void:
19	var pos_angle = randi() % 360
20	var unit_vector = Vector2.UP.rotated(pos_angle)
21	var screen_radius = get_viewport().get_visible_rect().size.length() / 2 + 10
22	var enemy_spawn_dist = 400 if should_be_visible else screen_radius
23	var pos = unit_vector * enemy_spawn_dist + $Player.global_position
24
25	var enemy = Enemy.instance()
26	enemy.connect("enemy_killed", self, "_on_enemy_killed")
27	enemy.position = pos
28	enemy.add_to_group("enemies")
29	add_child(enemy)
30
31	func _input(event: InputEvent) -> void:
32	if event is InputEventScreenTouch:
33	if event.pressed && !$Player.dead:
34	Utils.log("event position", event.position)
35	Utils.log("to_global(event.position)", to_global(event.position))
36	Utils.log("player", $Player.position)
37	var result = event.position + $Player.position - Vector2(500, 300)
38	set_destination(result)
39
40	func _process(_delta: float) -> void:
41	if Input.is_action_just_pressed("click") and !$Player.dead:
42	var pos = get_global_mouse_position()
43	set_destination(pos)
44	if Input.is_action_just_pressed("pause"):
45	get_tree().paused = true
46	$CanvasLayer/PauseMenu.show()
47
48	if is_destination_set:
49	var diff = destination - $Player.global_position
50	var unit = diff.normalized()
51	$Player.velocity = unit * $Player.move_speed
52	$Destination.visible = true
53	else:
54	$Destination.visible = false
55	$Player.velocity = Vector2.ZERO
56
57	func set_destination(pos: Vector2) -> void:
58	Utils.log("setting destination to ", pos)
59	destination = pos
60	is_destination_set = true
61	$Destination.global_position = pos
62	$Destination.visible = true
63	$Player. global_rotation = global_position.direction_to(get_global_mouse_position()).angle() + PI/2.0
64
65	func _on_Destination_body_entered(body: Node) -> void:
66	if body == $Player:
67	is_destination_set = false
68
69	func sort_enemies_ascending_distance(a: Enemy,b: Enemy):
70	var distA = $Player.global_position.distance_to(a.global_position)
71	var distB = $Player.global_position.distance_to(b.global_position)
72	var result = distA < distB
73	return result
74
75	func filter_invalid_enemies(enemy: Enemy) -> bool:
76	if enemy.dead:
77	return false
78	return true
79
80	func _on_ShootTimer_timeout() -> void:
81	if $Player.dead:
82	return
83	var enemies = get_tree().get_nodes_in_group("enemies")
84	for e in enemies:
85	var enemy: Enemy = e
86	enemy.is_targeted = false
87
88	var filteredEnemies = Utils.filter(funcref(self,"filter_invalid_enemies"), enemies)
89	if filteredEnemies.size() > 0:
90	filteredEnemies.sort_custom(self, "sort_enemies_ascending_distance")
91	var closest_enemy: Enemy = filteredEnemies[0]
92	closest_enemy.is_targeted = true
93	$Player.shoot_at(closest_enemy.global_position)
94	$PlayerToTarget.points[0] = $Player.global_position
95	$PlayerToTarget.points[1] = closest_enemy.global_position
96
97	func _on_Button_pressed() -> void:
98	get_tree().paused = false
99	$CanvasLayer/PauseMenu.hide()