just some refactor, a line is misplaced

grid/ui/items.py

@@ -1,4 +1,5 @@
 import logging
+import random
 
 from PySide6.QtCore import QRectF, Qt
 from PySide6.QtGui import QBrush, QPainter, QPen
@@ -59,6 +60,23 @@ class AgilitySphereGraphicsItem(SphereGraphicsItem):
     def __init__(self, x_pos: int, y_pos: int) -> None:
         super().__init__(x_pos, y_pos, Qt.GlobalColor.darkYellow)
 
+class EmptySphereGraphicsItem(SphereGraphicsItem):
+    def __init__(self, x_pos: int, y_pos: int) -> None:
+        self.SPHERE_WIDTH = 20
+        super().__init__(x_pos, y_pos, Qt.GlobalColor.black)
+
+@staticmethod
+def random_sphere_factory(x_pos: int, y_pos: int) -> SphereGraphicsItem:
+    rand = random.random()
+    if rand > 3 / 4:
+        obj = SphereGraphicsItem(x_pos, y_pos)
+    elif rand > 2 / 4:
+        obj = AgilitySphereGraphicsItem(x_pos, y_pos)
+    elif rand > 1 / 4:
+        obj = StrenghSphereGraphicsItem(x_pos, y_pos)
+    else:
+        obj = EmptySphereGraphicsItem(x_pos, y_pos)
+    return obj
 
 class ArcGraphicsItem(QGraphicsItem):
     """Circle arc."""

grid/ui/pattern.py

@@ -1,5 +1,4 @@
 import math
-import random
 
 from typing import List, Tuple
 
@@ -14,12 +13,10 @@ from PySide6.QtWidgets import (
 )
 
 from grid.ui.items import (
-    AgilitySphereGraphicsItem,
     HPSphereGraphicsItem,
-    SphereGraphicsItem,
     ArcGraphicsItem,
     LineGraphicsItem,
-    StrenghSphereGraphicsItem,
+    random_sphere_factory,
 )
 
 
@@ -47,10 +44,10 @@ class Pattern(QGraphicsItemGroup):
             LineGraphicsItem(line_start_x, line_start_y, line_end_x, line_end_y, self)
         )
 
-        line_start_x = top_left_corner_x + center_x
+        line_start_x = center_x
         line_start_y = top_left_corner_y + self.SPACE_BETWEEN_SPHERE * 1.5
-        line_end_x = top_left_corner_x + center_x
-        line_end_y = top_left_corner_y + self.SPACE_BETWEEN_SPHERE * 2.5
+        line_end_x = center_x
+        line_end_y = top_left_corner_y + self.SPACE_BETWEEN_SPHERE  # * 2.5
         self.addToGroup(
             LineGraphicsItem(line_start_x, line_start_y, line_end_x, line_end_y, self)
         )
@@ -74,13 +71,7 @@ class Pattern(QGraphicsItemGroup):
             center_x, center_y, self.SPACE_BETWEEN_SPHERE, sphere_on_circle
         )
         for x, y in points:
-            rand = random.random()
-            if rand > 2 / 3:
-                self.addToGroup(SphereGraphicsItem(x, y))
-            elif rand > 1 / 3:
-                self.addToGroup(AgilitySphereGraphicsItem(x, y))
-            else:
-                self.addToGroup(StrenghSphereGraphicsItem(x, y))
+            self.addToGroup(random_sphere_factory(x, y))
 
         # second cercle
         sphere_on_circle = 8
@@ -99,7 +90,7 @@ class Pattern(QGraphicsItemGroup):
                 )
             )
         for x, y in points:
-            self.addToGroup(SphereGraphicsItem(x, y))
+            self.addToGroup(random_sphere_factory(x, y))
         # self.addToGroup(
         #    ArcGraphicsItem(
         #        center_x, center_y, self.SPACE_BETWEEN_SPHERE * 2, 0, 90, self