Python超人-宇宙模拟器

sim_scenes/featured/jupiter_moon_protects_earth.py

@@ -13,6 +13,7 @@ from common.consts import SECONDS_PER_MONTH, SECONDS_PER_YEAR, AU
 from sim_scenes.func import ursina_run, camera_look_at, two_bodies_colliding, create_text_panel, create_sphere_sky
 from simulators.ursina.entities.body_timer import TimeData, BodyTimer
 from simulators.ursina.entities.entity_utils import create_directional_light
+from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
 import random
 import math
@@ -98,6 +99,7 @@ class JupiterMoonProtectsEarthSim:
             init_position=pos, init_velocity=vel, gravity_only_for=gravity_only_for
         )
         rock.set_light_disable(True)
+        rock.trail_color = (255, 255, 255)
         # 给石头一个随机旋转的方向和值
         rock.rotation = [0, 0, 0]
         rock.rotation[random.randint(0, 2)] = random.randint(90, 200) / 100
@@ -192,6 +194,12 @@ class JupiterMoonProtectsEarthSim:
                                                     j_protected_cnt, m_protected_cnt)
 
         self.text_panel.text = colliding_info
+        self.camera_move(time_data)
+
+    def camera_move(self, time_data):
+        from ursina import camera
+        camera.position += camera.left * 0.1
+        camera_look_at(self.sun)
 
     def on_ready(self):
         from ursina import application
@@ -218,6 +226,9 @@ if __name__ == '__main__':
 
     # 设置计时器的最小时间单位为年
     BodyTimer().min_unit = BodyTimer.MIN_UNIT_YEARS
+    UrsinaConfig.trail_type = "curve_line"
+    # UrsinaConfig.trail_type = "line"
+    UrsinaConfig.trail_length = 30
 
     sim = JupiterMoonProtectsEarthSim(comet_num=30)
 
@@ -229,7 +240,7 @@ if __name__ == '__main__':
     # 使用 ursina 查看的运行效果
     # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
     # position = 左-右+、上+下-、前+后-
-    ursina_run(sim.bodies, SECONDS_PER_MONTH * 3,
+    ursina_run(sim.bodies, SECONDS_PER_MONTH * 30,
                position=(AU, AU * 5, -AU * 5),
                cosmic_bg='',
                show_grid=False,