How to spawn something, inside a node(like Area2d)

Help Programming
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1

Godot Version

latest version

Question

Im trying to make an Enemy Node(I alr programmed its instantiation), to spawn inside a node(something like Area2d), so then, I can make the Enemy Spawn around a border, instead of just using randi_range

2

An Area2D does not spawn anything by itself, but you can use its CollisionShape2D as the spawn region.

For example, with a RectangleShape2D:

@export var enemy_scene: PackedScene
@onready var spawn_shape: CollisionShape2D = $CollisionShape2D

func spawn_enemy() -> void:
    var rectangle := spawn_shape.shape as RectangleShape2D
    var half_size := rectangle.size * 0.5

    var enemy := enemy_scene.instantiate() as Node2D
    get_tree().current_scene.add_child(enemy)

    var random_point := Vector2(
        randf_range(-half_size.x, half_size.x),
        randf_range(-half_size.y, half_size.y)
    )

    enemy.global_position = spawn_shape.to_global(random_point)

You can resize the CollisionShape2D in the editor to visually define the area where enemies are allowed to spawn.

Glad that help you!

3

Thanks huge help, ill try to get help from others to understand parts of the code since im kinda learning gdscript, nonetheless thnk you

4

Glad to help you !