How to connect nodes ?

UnknownUser

Hello ! I am doing a simple game for school, and i can't understand a few things, many thank you if you help me. The game consists of a world map(like strategy), where i can touch a country, and box with question should appear to screen(with simple animations, like alpha channel or smooth move from side). I added texture buttons in map, and learned how to animate camera, but i need to add a box that shows to me, when i touch any country(i do this with texture button), and it shows after all animation, like camera move and camera zoom and all of it after button click. This is done by using timers or something like that ? How to synchronize all of it ? How to change alpha channel in node ? In Defold game engine i can do this with message from node to node(Which contains variables, and string), and when i click on sprite for example, i can send a message to other node with message like "start doing something", but how i can do this in Godot ? Thank you and sorry for bad english )

cybereality

In terms of sending messages, you could use Signals for this. https://docs.godotengine.org/en/stable/getting_started/step_by_step/signals.html

UnknownUser

@cybereality said: In terms of sending messages, you could use Signals for this. https://docs.godotengine.org/en/stable/getting_started/step_by_step/signals.html Thank you, i'll try it.

And I have a problem with alpha channel in node.

extends TextureRect
var x = 0
func _ready():
	set_process(true)
func _process(delta):
	modulate.a=255-x
	x+=1
	if x == 256:
		set_process(false)

node should show smooth, but it don't change alpha and just if alpha = 0 it not visible, if alpha > 0 it visible, please why is it, do you know ?

TwistedTwigleg

@X1dg said:

@cybereality said: In terms of sending messages, you could use Signals for this. https://docs.godotengine.org/en/stable/getting_started/step_by_step/signals.html Thank you, i'll try it.

And I have a problem with alpha channel in node.
extends TextureRect
var x = 0
func _ready():
	set_process(true)
func _process(delta):
	modulate.a=255-x
	x+=1
	if x == 256:
		set_process(false)
node should show smooth, but it don't change alpha and just if alpha = 0 it not visible, if alpha > 0 it visible, please why is it, do you know ?

The color in modulate has a range of 0 to 1, so instead of 0-255, you want to do something like this if you want a smooth alpha fade-in (untested, but I think it should work):

extends TextureRect
var x = 0
var fade_speed = 1 # how long the transition will take, in seconds
func _ready():
	# BTW, this line is not strictly required. Godot will call `_process` if it's defined
	set_process(true)
func _process(delta):
	x += delta
	if x >= 1:
		x = 1
		set_process(false)
	
	modulate.a = x

UnknownUser

@TwistedTwigleg said:
@X1dg said:

@cybereality said: In terms of sending messages, you could use Signals for this. https://docs.godotengine.org/en/stable/getting_started/step_by_step/signals.html Thank you, i'll try it.

And I have a problem with alpha channel in node.
extends TextureRect
var x = 0
func _ready():
	set_process(true)
func _process(delta):
	modulate.a=255-x
	x+=1
	if x == 256:
		set_process(false)
node should show smooth, but it don't change alpha and just if alpha = 0 it not visible, if alpha > 0 it visible, please why is it, do you know ?
The color in modulate has a range of 0 to 1, so instead of 0-255, you want to do something like this if you want a smooth alpha fade-in (untested, but I think it should work):
extends TextureRect
var x = 0
var fade_speed = 1 # how long the transition will take, in seconds
func _ready():
	# BTW, this line is not strictly required. Godot will call `_process` if it's defined
	set_process(true)
func _process(delta):
	x += delta
	if x >= 1:
		x = 1
		set_process(false)
	
	modulate.a = x

Oooh thank you, there is no any information about it anywhere ( Thank you