set magnitude of evector adjusts dx, dy

2019-08-15 06:08:52 -04:00 · 2019-08-15 06:08:52 -04:00 · b7e6f80a33
parent 5f6e3a8e61
commit b7e6f80a33
1 changed files with 5 additions and 0 deletions
--- a/pgfw/Vector.py
+++ b/pgfw/Vector.py
@ -129,5 +129,10 @@ class EVector(Vector):
    def __nonzero__(self):
        return bool(self.magnitude)

+    def __setattr__(self, name, value):
+        list.__setattr__(self, name, value)
+        if name == "magnitude" and self.angle is not None:
+            self.dx, self.dy = get_delta(self.angle, value, False)
+
    def move(self):
        self += self.dx, self.dy