Python超人-宇宙模拟器

bodies/moon.py

@@ -27,7 +27,7 @@ class Moon(Body):
                  init_velocity=[-(29.79 + 1.03), 0, 0],
                  texture="moon.jpg", size_scale=1.0, distance_scale=1.0,
                  rotation_speed=0.25, ignore_mass=False,
-                 trail_color=None, show_name=False,
+                 trail_color=None, show_name=False, show_trail=True,
                  gravity_only_for_earth=False):
         """
         @param name: 月球名称
@@ -57,6 +57,7 @@ class Moon(Body):
             "rotation_speed": rotation_speed,
             "ignore_mass": ignore_mass,
             "trail_color": trail_color,
+            "show_trail": show_trail,
             "show_name": show_name
         }
         super().__init__(**params)

objs/rock.py

@@ -46,7 +46,7 @@ class Rock(Obj):
 # 对岩石进行缩放，保证 create_rock 保证创建的岩石大小差异不会过大
 ROCK_SIZE_SCALE_FACTOR = {
     6: 0.5,
-    7: 1e-2
+    7: 3e-1
 }
 
 

sim_scenes/featured/jupiter_moon_protects_earth.py

@@ -35,14 +35,14 @@ class JupiterMoonProtectsEarthSim(UniverseSimScenes):
         self.sun_jupiter_d = 520000000
         # 分别保存太阳碰撞次数、木星碰撞次数、地球碰撞次数、月球碰撞次数、木星保护次数、月球保护次数
         self.colliding_count = [0, 0, 0, 0, 0, 0]
-        self.sun = Sun(name="太阳", size_scale=0.85e2)  # 太阳放大 80 倍，距离保持不变
-        self.jupiter = Jupiter(name="木星", size_scale=0.45e3, ignore_mass=True)  # 木星放大 600 倍，距离保持不变
-        self.earth = Earth(name="地球", size_scale=2.5e3, ignore_mass=True, )  # 地球放大 2000 倍，距离保持不变
+        self.sun = Sun(name="太阳", size_scale=0.85e2, show_trail=False)  # 太阳放大 80 倍，距离保持不变
+        self.jupiter = Jupiter(name="木星", size_scale=0.45e3, ignore_mass=True, show_trail=False)  # 木星放大 600 倍，距离保持不变
+        self.earth = Earth(name="地球", size_scale=2.5e3, ignore_mass=True, show_trail=False )  # 地球放大 2000 倍，距离保持不变
         self.moon = Moon(name="月球", size_scale=3.5e3,  # 月球球放大 3000 倍，为了较好的效果，地月距离要比实际大
                          init_position=[self.earth_moon_d, 0, AU],
                          init_velocity=[0, 0, 0],
                          ignore_mass=True,
-                         rotation_speed=0.4065,
+                         rotation_speed=0.4065, show_trail=False,
                          # gravity_only_for_earth=True
                          )  # .set_light_disable(True)
 
@@ -99,7 +99,7 @@ class JupiterMoonProtectsEarthSim(UniverseSimScenes):
 
         # vel = [0, 0, 0]
         # 石头随机大小
-        size_scale = random.randint(300, 600) * 1.5e4
+        size_scale = random.randint(500, 600) * 1.5e4
         # 随机创建石头
         rock = create_rock(
             no=index % 7 + 1, name=f'岩石{index + 1}', mass=size_scale / 1000,
@@ -191,10 +191,14 @@ class JupiterMoonProtectsEarthSim(UniverseSimScenes):
                 if collided:
                     # 如果碰撞了，则该石头重复再利用，这样才保证有无限个石头可用
                     pos, vel = self.random_pos_vel()
-                    comet.planet.on_reset()
-                    comet.planet.trails.clear()
-                    if hasattr(comet.planet, "trail_last_pos"):
-                        delattr(comet.planet, "trail_last_pos")
+
+                    # comet.planet.trails.clear()
+                    # if hasattr(comet.planet, "trail_last_pos"):
+                    #     delattr(comet.planet, "trail_last_pos")
+                    # if hasattr(comet.planet, "last_trail"):
+                    #     del comet.planet.last_trail
+                    #     delattr(comet.planet, "last_trail")
+
                     comet.init_position = pos
                     comet.init_velocity = vel
                     comet.set_visible(True)
@@ -205,10 +209,12 @@ class JupiterMoonProtectsEarthSim(UniverseSimScenes):
                     if hasattr(comet, "moon_collided"):
                         delattr(comet, "moon_collided")
 
-        print("Sun:%s Jupiter:%s Earth:%s Moon:%s" % (self.colliding_count[0],
-                                                      self.colliding_count[1],
-                                                      self.colliding_count[2],
-                                                      self.colliding_count[3]))
+                    comet.planet.on_reset()
+
+        # print("Sun:%s Jupiter:%s Earth:%s Moon:%s" % (self.colliding_count[0],
+        #                                               self.colliding_count[1],
+        #                                               self.colliding_count[2],
+        #                                               self.colliding_count[3]))
         sun_cnt, jupiter_cnt, earth_cnt, moon_cnt, j_protected_cnt, m_protected_cnt = self.colliding_count
         total_cnt = sun_cnt + jupiter_cnt + earth_cnt + moon_cnt
         if total_cnt == 0:
@@ -272,6 +278,10 @@ class JupiterMoonProtectsEarthSim(UniverseSimScenes):
         # UrsinaConfig.trail_length = 1000
         UrsinaConfig.trail_thickness_factor = 2
 
+        for b  in  self.bodies:
+            if isinstance(b, Rock):
+                print("岩石大小", b.name, b.planet.scale_x)
+
 
 if __name__ == '__main__':
     """

simulators/ursina/entities/entity_utils.py

@@ -147,7 +147,8 @@ def create_trails(parent):
     else:
         trail = create_trail_sphere(parent, pos)  # 拖尾为球体
 
-    if trail is not None:
+    if trail is None:
+        return
     create_trail_info(parent.body, trail)
 
     # 创建拖尾球体，并作为字典的key，存放拖尾球体的位置
@@ -287,7 +288,10 @@ def create_trail_curve_line(parent, pos):
     trail = None
     if hasattr(parent, "trail_last_pos"):
         trail_last_pos = parent.trail_last_pos
-        if distance(pos, trail_last_pos) > 0:
+        d = distance(pos, trail_last_pos)
+        # if d > 200:
+        #     print(parent.body.name, d)
+        if d > 0:
             trail = Entity(model=Mesh(
                 vertices=((pos[0], pos[1], pos[2]), (trail_last_pos[0], trail_last_pos[1], trail_last_pos[2])),
                 mode='line',
@@ -344,6 +348,9 @@ def clear_trails(parent):
     parent.trails.clear()
     if hasattr(parent, "trail_last_pos"):
         delattr(parent, "trail_last_pos")
+    if hasattr(parent, "last_trail"):
+        destroy(parent.last_trail)
+        delattr(parent, "last_trail")
 
 
 def create_fixed_star_lights(fixed_star):