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Attention | Topic was automatically imported from the old Question2Answer platform. |
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Asked By | Degreeno |
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Old Version | Published before Godot 3 was released. |
Hi, I’m trying to use threads to ini a tilemap. In this example, I created 4 new threads and start them in a loop. My tilemap is 1000x1000 and it keeps crashing on execution. When I init the tilemap without threads, then everything works fine.
initWorldGeneration([0, 0, Global.worldSize.x, Global.worldSize.y])
I added a lock to ensure, taht the threads don’t interfere and even tested it with only one therad, but it keeps crashing.
extends Panel
var worldTile
var timer
var threads = []
var finished = 0
var wait
var maxValues = Vector2(2, 2)
var stage = 0
func _ready():
wait = Mutex.new()
for i in range(0, maxValues.x+maxValues.y):
threads.append(Thread.new())
worldTile = self.get_node("worldTile")
self.set_size(Vector2(32*Global.worldSize.x, 32*Global.worldSize.y))
initTimer()
#initWorldGeneration([0, 0, Global.worldSize.x, Global.worldSize.y])
func startThreads():
var idx = 0
for x in range(0, maxValues.x):
for y in range(0, maxValues.y):
if(not threads[idx].is_active()):
threads[idx].start(self, "initWorldGeneration", [x*Global.worldSize.x/maxValues.x, y*Global.worldSize.y/maxValues.y, (x+1)*Global.worldSize.x/maxValues.x, (y+1)*Global.worldSize.y/maxValues.y], 1)
idx += 1
func initTimer():
timer = Timer.new()
timer.set_one_shot(false)
timer.set_timer_process_mode(Timer.TIMER_PROCESS_FIXED)
timer.set_wait_time(0.6)
timer.connect("timeout", self, "_timer_callback")
self.add_child(timer)
timer.start()
func _timer_callback():
if(stage == 0):
stage == 1
startThreads()
elif(stage == 1 and finished == maxValues.x + maxValues.y):
print("finished")
stage == 1
func initWorldGeneration(arg):
print(str("Starting thread with: ", arg))
for x in range(arg[0], arg[2], 1):
for y in range(arg[1], arg[3], 1):
wait.lock()
worldTile.set_cellv(Vector2(x, y), 0)
wait.unlock()
finished += 1
return null
Thanks.
AFAIK, you should not do something to manipulate elements those will be rendered on screen on not main thread.
volzhs | 2017-07-18 22:03
Which means it is not possible to use more than one core to create/fill
tilemaps?
Degreeno | 2017-07-21 11:45