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deterministic fix #32

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deterministic fix #32

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5 changes: 4 additions & 1 deletion crafter/engine.py
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Original file line number Diff line number Diff line change
Expand Up @@ -206,7 +206,10 @@ def _tint(self, canvas, color, amount):
return (1 - amount) * canvas + amount * color

def _noise(self, canvas, amount, stddev):
noise = self._world.random.uniform(32, 127, canvas.shape[:2])[..., None]
state = self._world.random.get_state()
random = np.random.RandomState()
random.set_state(state)
noise = random.uniform(32, 127, canvas.shape[:2])[..., None]
mask = amount * self._vignette(canvas.shape, stddev)[..., None]
return (1 - mask) * canvas + mask * noise

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1 change: 1 addition & 0 deletions crafter/env.py
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Expand Up @@ -160,6 +160,7 @@ def _balance_object(
xmin, xmax, ymin, ymax = chunk
random = self._world.random
creatures = [obj for obj in objs if isinstance(obj, cls)]
creatures.sort(key=(lambda x: tuple(x.pos)))
mask = self._world.mask(*chunk, material)
target_min, target_max = target_fn(len(creatures), mask.sum())
if len(creatures) < int(target_min) and random.uniform() < spawn_prob:
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