Comments (3)
souvikinator
commented on June 4, 2024
1
Can refer to this:
https://gitlab.com/snopek-games/sg-physics-2d
Doesn't support rigid bodies and is written from scratch but the author has created a separate vector implementation
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Ughuuu
commented on June 4, 2024
Running the following code:
extends Node2D
func _ready():
var angle_start = -PI
var steps = 1000
var step_increase = 1.0 / steps
var hash_final :int = 0
for step in 1000:
var angle :float= angle_start + step * step_increase * 2 * PI
var value :float= step * step_increase * 10
var str1 :String= "angle: " + str(angle) + " sin: " + str(sin(angle))+ " cos: "+ str(cos(angle))+ " tan: "+ str(tan(angle))
var str2 :String= "value: " + str(value) + " sqrt: " + str(sqrt(value))
hash_final += str1.hash()
hash_final += str2.hash()
print(hash_final)
on both mac and web, I get the following hashes:
- mac: 4235844765204
- web: 4233582584233
So it seems the sin/cos/tan/sqrt implementations are indeed not cross platform deterministic.
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souvikinator
commented on June 4, 2024
For me it gives same hash:
Web: 4233582584233
Linux: 4233582584233
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