initial commit

vec.py

@@ -0,0 +1,35 @@
+from math import sqrt
+
+
+class Vec2:
+    def __init__(self, x: float = 0, y: float = 0):
+        self.x: float = x
+        self.y: float = y
+
+    @property
+    def mag(self) -> float:
+        return sqrt(self.x ** 2 + self.y ** 2)
+
+    def normalized(self) -> "Vec2":
+        mag = self.mag
+        if mag == 0:
+            return Vec2()
+        return self / mag
+
+    def __add__(self, v: "Vec2") -> "Vec2":
+        return Vec2(self.x + v.x, self.y + v.y)
+
+    def __sub__(self, v: "Vec2") -> "Vec2":
+        return Vec2(self.x - v.x, self.y - v.y)
+
+    def __mul__(self, f: float) -> "Vec2":
+        return Vec2(self.x * f, self.y * f)
+
+    def __truediv__(self, f: float) -> "Vec2":
+        return Vec2(self.x / f, self.y / f)
+
+    def __neg__(self) -> "Vec2":
+        return Vec2(-self.x, -self.y)
+
+    def cross(self, v: "Vec2") -> float:
+        return self.x * v.y - self.y * v.x