CODEWITHSUNDEEP
godotgdscript
cak3_lover
cak3_lover

Reputation: 1938

How to change collisionPolygon shape using set_deferred?

I'm trying to change my CollisionPolygon2D shape via code as such:

...

self.polygon[0].x+=100

but it gives the error:

area_set_shape_disabled: Can't change this state while flushing queries. Use call_deferred() or set_deferred() to change monitoring state instead.

which is why I'm assuming I'll need to use set_deferred() to change the shape
so how do I achieve this?

Upvotes: 0

Views: 430

Answers (1)

Camwin
Camwin

Reputation: 413

It may be useful to use this pattern:

  1. Get a copy of the value
  2. Modify the temporary value
  3. Set the value back
var temp_polygon = get_polygon()
temp_polygon[0].x -= 100
call_deferred("set_polygon", temp_polygon)

call_deferred is a function that calls functions by name. Here the name was "set_polygon" and the second argument is the argument for set_polygon. It calls the function later in order to avoid conflicts like this. I would prefer call_deferred over set_deferred because the setter function is less likely to cause problems as well.

As a final note, try to avoid directly accessing properties, and use the setter and getter functions when possible.

Upvotes: 1

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