Сделал растения и корову

main.py

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+import arcade
+from random import randint
+import numpy as np
+
+SCREEN_SIZE = (800,600)
+TICK_TIME = 1
+
+class Cow(arcade.SpriteCircle):
+  ls = arcade.SpriteList()
+  def __init__(self,parent=None):
+    super().__init__(radius=5, color=arcade.color.BROWN)
+    if parent:
+      pass
+    else:
+      self.center_x = randint(1,SCREEN_SIZE[0])
+      self.center_y = randint(1,SCREEN_SIZE[1])
+    self.age = 0
+    self.age_to_bride = 3
+    self.speed = 5
+    Cow.ls.append(self)
+  @classmethod
+  def update(cls):
+    for c in cls.ls:
+      near_plant = Plant.get_near(c.center_x,c.center_y)
+      if near_plant:
+        vec = cls.get_vector(c.center_x,near_plant.center_x,
+                             c.center_y,near_plant.center_y)
+        new_x = c.center_x + vec[0]*randint(0,c.speed)
+        new_y = c.center_y + vec[1]*randint(0,c.speed)
+        if 0 < new_x < SCREEN_SIZE[0] and 0 < new_y < SCREEN_SIZE[1]:
+          c.center_x = new_x
+          c.center_y = new_y
+    
+  @classmethod
+  def draw(cls):
+    cls.ls.draw()
+    for p in cls.ls:
+      p.draw_hit_box()
+  @staticmethod
+  def get_vector(src_x,target_x,src_y,target_y):
+    source = np.array([src_x, src_y])
+    target = np.array([target_x, target_y])
+    direction = target - source
+    length = np.linalg.norm(direction)
+    return direction / length
+
+class Plant(arcade.SpriteCircle):
+  ls = arcade.SpriteList()
+
+  def __init__(self,parent=None):
+    super().__init__(radius=1, color=arcade.color.GREEN)
+    if parent:
+      self.center_x = parent.center_x + randint(-parent.fly_distance,parent.fly_distance)
+      self.center_y = parent.center_y + randint(-parent.fly_distance,parent.fly_distance)
+    else:
+      self.center_x = randint(1,SCREEN_SIZE[0])
+      self.center_y = randint(1,SCREEN_SIZE[1])
+    self.age = 0
+    self.fly_distance = 100
+    self.age_to_plant = 10
+    if not arcade.check_for_collision_with_list(self,Plant.ls) and 0 < self.center_x < SCREEN_SIZE[0] and 0 < self.center_y < SCREEN_SIZE[1]:
+      Plant.ls.append(self)
+  @classmethod
+  def get_near(cls,x,y):
+    min_dist = SCREEN_SIZE[0]
+    near_plant = None
+    for p in cls.ls:
+      dist = ((p.center_x - x)**2 + (p.center_y - y)**2)**0.5
+      if dist < min_dist:
+        near_plant = p
+        min_dist = dist
+    return near_plant
+  @classmethod
+  def update(cls):
+    for p in cls.ls:
+      p.age += 1
+      if p.center_x - p.width//2 > 0 and p.center_x + p.width//2 < SCREEN_SIZE[0] and p.center_y - p.height//2 > 0 and p.center_y + p.width//2 < SCREEN_SIZE[1]:
+        hit_list = arcade.check_for_collision_with_list(p,cls.ls)
+        if not hit_list:
+          p.width += 2
+          p.height += 2
+        else:
+          for h in hit_list:
+            if p.width < h.width:
+              cls.ls.remove(p)
+              break
+      if p.age >= p.age_to_plant:
+        Plant(p)
+  @classmethod
+  def draw(cls):
+    cls.ls.draw()
+    for p in cls.ls:
+      p.draw_hit_box()
+
+class MainView(arcade.View):
+  def __init__(self):
+    super().__init__()
+    self.background_color = (100,100,200)
+    Plant()
+    Cow()
+    self.time = 0
+    self.cur_time = 0
+    self.text = None
+
+  def on_update(self, delta_time):
+    self.cur_time += delta_time
+    if self.cur_time >= TICK_TIME:
+      Plant.update()
+      Cow.update()
+      self.time += 1
+      self.cur_time = 0
+    #self.text = arcade.Text(f'Time: {self.time}',20,100,(255,255,255))
+    
+  def on_draw(self):
+    self.clear()
+    Plant.draw()
+    Cow.draw()
+    #self.text.draw()
+    
+
+if __name__ == '__main__':
+  window = arcade.Window(*SCREEN_SIZE,"Игра про жизнь")
+  view = MainView()
+  window.show_view(view)
+  arcade.run()