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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | disorientedperson |
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Old Version | Published before Godot 3 was released. |
Using GDScript, I have a separate thread where certain things in my game are being done. This needs to involve pausing that thread for a certain amount of time. I’m looking for something equivalent or similar to Python’s time.sleep function.
I apologize if this is obvious; I’m brand new to Godot. Thanks!
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Reply From: | avencherus |
yield() and resume()
or you can use signals in yield()
The standard example is:
yield(get_tree(), "idle_frame")
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Reply From: | ericdl |
The OS object has functions delay_msec and delay_usec that will delay executing of the current thread by given milliseconds and microseconds, respectively. Probably not a good idea not to use them on the main thread obviously.
Also, Godot 2.2+ will introduce a simple way to pause code execution for x amount of time.
In the meantime, you can use a timer with yield statement to pause for x amount of time.
For example:
signal timer_end
func _wait( seconds ):
self._create_timer(self, seconds, true, "_emit_timer_end_signal")
yield(self,"timer_end")
func _emit_timer_end_signal():
emit_signal("timer_end")
func _create_timer(object_target, float_wait_time, bool_is_oneshot, string_function):
timer = Timer.new()
timer.set_one_shot(bool_is_oneshot)
timer.set_timer_process_mode(0)
timer.set_wait_time(float_wait_time)
timer.connect("timeout", object_target, string_function)
self.add_child(timer)
timer.start()
To use, call _wait(1.5) anywhere you need to introduce a pause.
I tried to do something like this:
onready var timer1 = get_node("Timer1")
func run_timer(time):
timer1.set_wait_time(time)
timer1.set_timer_process_mode(0)
timer1.start()
yield(timer1, "timeout")
print("Timer is done!")
func test_anim():
run_timer(5)
func _ready():
test_anim()
print("Print after test_anim function is ended!")
I got “Print after test_anim function is ended!” and then, after 5 seconds “Timer is done!”.
But but how I could get this events being done step-by-step?
Wait until the timer would end and then do the rest?
Aeons | 2016-11-06 16:07
Your function run_timer() prints “Timer is done!” before the timer is finished. Also, if you want a pause inside func _ready() then the yield should be there.
Try this modified code, note the connection of the variable signal timer_end:
onready var timer1 = get_node("Timer1")
signal timer_end
func run_timer(time):
timer1.set_wait_time(time)
timer1.set_timer_process_mode(0)
timer1.connect("timeout",self,"_emit_timer_end_signal")
timer1.start()
print("Timer is created")
func _emit_timer_end_signal():
emit_signal("timer_end")
func test_anim():
run_timer(5)
func _ready():
test_anim()
yield(self, "timer_end")
print("Print after test_anim function is ended!")
ericdl | 2016-11-06 20:55
Edited the answer to include the variable signal timer_end, it should have been there originally, my apologies
ericdl | 2016-11-06 20:58
Er… Yes. It’s still a bit bulky. So if need to call run_timer() function in test_anim() twice, I have to write something like this:
onready var timer1 = get_node("Timer1")
signal timer_end
func run_timer(time):
timer1.set_wait_time(time)
timer1.set_timer_process_mode(0)
timer1.start()
print("Timer is created")
func _emit_timer_end_signal():
emit_signal("timer_end")
func test_anim():
run_timer(5)
yield(self, "timer_end")
print("Do something 1")
run_timer(5)
yield(self, "timer_end")
print("Do something 2")
func _ready():
timer1.connect("timeout",self,"_emit_timer_end_signal")
test_anim()
yield(self, "timer_end")
yield(self, "timer_end")
print("Print after test_anim function is ended!")
And the more times I call run_timer(), the more yield(self, "timer_end") I need to add.
Is there a way to make the code shorter?
Aeons | 2016-11-06 21:11
Thanks for the thorough answer!
disorientedperson | 2016-11-06 23:14
@Aeons
The timer/yield is meant to introduce a timed delay inside the function in which it is called. So I am not sure what you are trying to achieve with your code between _on_ready() and test_anim().
If you are testing animations with a AnimationPlayer, you can yield to signals generated by the AnimationPlayer per the documentation:
# Resume execution when animation is done playing:
yield( get_node("AnimationPlayer"), "finished" )
If you are using yield with the expectation of delaying execution of your code as it passes between functions, simply emit a seperate signal at the end of the called function. In this case, emit a new signal at the end oftest_anim() and wait for it in _ready():
onready var timer1 = get_node("Timer1")
signal timer_end
signal test_anim_end
func run_timer(time):
timer1.set_wait_time(time)
timer1.set_timer_process_mode(0)
timer1.start()
print("Timer is created")
func _emit_timer_end_signal():
emit_signal("timer_end")
func test_anim():
run_timer(2)
yield(self, "timer_end")
print("Do something 1")
run_timer(2)
yield(self, "timer_end")
print("Do something 2")
emit_signal("test_anim_end")
func _ready():
timer1.connect("timeout",self,"_emit_timer_end_signal")
test_anim()
yield(self, "test_anim_end")
print("Print after test_anim function is ended!")
ericdl | 2016-11-07 01:06
If you are using yield with the expectation of delaying execution of your code as it passes between functions, simply emit a seperate signal at the end of the called function.
Yes, that one.
It seems, it can’t be done without a new signal.
Thanks for the explanations.
Aeons | 2016-11-07 07:28