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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | JulioYagami |
I want to write return functions
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Reply From: | hilfazer |
Both setter and getter:
var my_var setget my_var_set, my_var_get
func my_var_set(new_value):
my_var = new_value
func my_var_get():
return my_var # Getter must return a value.
Only a setter
var my_var = 5 setget myvar_set
Only a getter
var my_var = 5 setget ,myvar_get
Docs:
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Reply From: | SIsilicon |
You use setgetwhen defining variables that are outside functions. The syntax is as follows.
var setter_and_getter setget setter, getter
var only_setter setget setter
var only_getter setget , getter
# Any initialization of a variable most be done before setget.
var setget_initialized = 0 setget setter, getter
The setter and getter are functions that you must define in the script. The simplest example of these two are as follows.
func setter(value):
something = value
func getter():
return something
The setter function is called whenever it’s corresponding variable gets set.
And the getter is called when said variable is accessed in anyway.
#assuming something is from a different script
something = 0 # setter gets called.
var other = something # getter gets called.
They won’t be called however if the variable being manipulated is inside the same script it was defined.
#assuming something is in the same script
something = 0 # setter does not get called.
self.something = 0 # doing this will make the setter get called.
From what I can see, the setter is also not called if the property is modified in a script that extends the script that declared the variable.
oskfo | 2019-05-01 15:44
this came up while searching so for anyone that encounters this, you have to change the property using the self keyword, e.g. self.something = 0, to trigger the setter from the parent.
decaprecated | 2021-06-30 00:36