Merge #168

168: Add Vector.zero as a class-level attribute r=AstraLuma a=nbraud Co-authored-by: nicoo <nicolas@braud-santoni.eu>
ppb · Oct 26, 2021 · 273df90 · 273df90
2 parents 12163bd + ba1864f
commit 273df90
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diff --git a/ppb_vector/__init__.py b/ppb_vector/__init__.py
@@ -65,6 +65,9 @@ class Vector:
     x: float
     y: float
 
+    # Class-level attributes
+    zero: typing.ClassVar['Vector']
+
     __match_args__ = ('x', 'y')
 
     # Tell CPython that this isn't an extendable dict
@@ -574,4 +577,7 @@ def reflect(self, surface_normal: VectorLike) -> 'Vector':
         return self - (2 * (self * surface_normal) * surface_normal)
 
 
+Vector.zero = Vector(0, 0)
+
+
 Sequence.register(Vector)
diff --git a/tests/test_zero.py b/tests/test_zero.py
@@ -0,0 +1,5 @@
+from ppb_vector import Vector
+
+
+def test_zero():
+    assert not Vector.zero