Godot Version
v4.2
Question
Hi, I’m new to Godot but have some years of experience in programming. I’m learning Godot after dropping Unity and I’m impressed how smart this tool is implemented.
I’m implementing a little shooter game with enemies which shall move in groups and want to apply a computed Area2D bounding box arround the enemy group which automatically adjusts when one of the targets is destroyed.
not sure if Godot has this functionality included but due to learning experience I implemented a small script iterating over the Area2D Childs calculating the position and size of the new Area2d rect.
it works as expected but when I add multiple groups to my scene only the last calculated rect is applied to all my nodes. Maybe it has something to do with unique items but haven’t got a clue.
The top group has 1 dummy (ColorRect)
the bottom group 3, but both have the collision area matching 3
Anybody has an idea what I’m missing:
extends Area2D
class_name BoundingBox
const _size: int = 16
func _ready():
var panel_rect = _get_group_rect()
$CollisionShape2D.position = panel_rect.position
$CollisionShape2D.shape.size = panel_rect.size
print(panel_rect)
func _get_group_rect():
var min_x: float = 10000
var min_y: float = 10000
var max_x: float = 0
var max_y: float = 0
for child in get_children():
if child is CollisionShape2D: continue
min_x = min(min_x, child.position.x)
min_y = min(min_y, child.position.y)
max_x = max(max_x, child.position.x)
max_y = max(max_y, child.position.y)
var origin = Vector2i(min_x, min_y)
var end = Vector2i(max_x, max_y)
var size = end - origin + Vector2i(_size, _size)
var center = Rect2(origin, size).get_center()
return Rect2(center, size)
printout for calculated frames:
[P: (8, 8), S: (16, 16)]
[P: (24, 8), S: (48, 16)]
Thanks in advance
