Fix color copying for color_*()

effects/effect.py

@@ -2,11 +2,15 @@ from dataclasses import dataclass
 from enum import Enum
 import math
 import random
-from typing import Tuple
+from typing import Generator, Tuple
 import pygame as pg
 from abc import abstractmethod
 
 
+def copy_color(source: pg.Color) -> pg.Color:
+    return pg.Color(source.r, source.g, source.b, source.a)
+
+
 @dataclass(frozen=True, slots=True)
 class Colors:
     Black = pg.Color(0, 0, 0)
@@ -20,19 +24,18 @@ class Colors:
 
 
 def color_wheel(hue=0, increase=1) -> pg.Color:
-    color = Colors.Red
+    color = copy_color(Colors.Red)
     h, s, l, a = color.hsla
-    color.hsla = hue, s, l, a
+    h = hue
 
     while True:
-        yield color
-        h, s, l, a = color.hsla
-        h = (h + increase) % 360
         color.hsla = h, s, l, a
+        yield color
+        h = (h + increase) % 360
 
 
 def color_randomize() -> pg.Color:
-    color = Colors.Red
+    color = copy_color(Colors.Red)
     h, s, l, a = color.hsla
     color.hsla = random.randint(0, 359), s, l, a
 
@@ -57,12 +60,10 @@ def transform_bounce(
     size_x, size_y = yield (bounds.centerx, bounds.centery)
     while True:
         pos_x = (
-            math.cos(x_factor * ticks) * (bounds.width - 2 * size_x) // 2
+            math.cos(x_factor * ticks) * (bounds.width - size_x) // 2 + bounds.centerx
-            + bounds.centerx
         )
         pos_y = (
-            math.sin(y_factor * ticks) * (bounds.height - 2 * size_y) // 2
+            math.sin(y_factor * ticks) * (bounds.height - size_y) // 2 + bounds.centery
-            + bounds.centery
         )
 
         ticks += velocity / 180 * math.pi