From 504dc7e48639c6f9fd1e7b6d5f70bb3a4eaa7115 Mon Sep 17 00:00:00 2001
From: march3 <gang.wei@qq.com>
Date: Sun, 2 Jul 2023 19:33:52 +0800
Subject: [PATCH] =?UTF-8?q?Python=E8=B6=85=E4=BA=BA-=E5=AE=87=E5=AE=99?=
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---
 sim_scenes/science/speed_of_light_3d.py | 57 +++++++++++++++++++++----
 1 file changed, 49 insertions(+), 8 deletions(-)

diff --git a/sim_scenes/science/speed_of_light_3d.py b/sim_scenes/science/speed_of_light_3d.py
index 1b53960..de0d201 100644
--- a/sim_scenes/science/speed_of_light_3d.py
+++ b/sim_scenes/science/speed_of_light_3d.py
@@ -12,6 +12,10 @@ from common.consts import LIGHT_SPEED
 from sim_scenes.science.speed_of_light_init import SpeedOfLightInit
 
 # TODO: 三种不同的摄像机视角
+from simulators.ursina.entities.body_timer import TimeData
+from simulators.ursina.entities.entity_utils import get_value_direction_vectors
+from simulators.ursina.ursina_event import UrsinaEvent
+
 camera_follow_light = None  # 摄像机固定，不会跟随光
 camera_follow_light = 'ForwardView'  # 摄像机跟随光，方向是向前看
 
@@ -22,8 +26,8 @@ init = SpeedOfLightInit(camera_follow_light)
 # 创建太阳系天体（忽略质量，引力无效，初速度全部为0）
 bodies = create_solar_system_bodies(ignore_mass=True, init_velocity=[0, 0, 0])
 
-camera_pos = "left"
-# camera_pos = "right"
+# camera_pos = "left"
+camera_pos = "right"
 camera_l2r = 0.01 * AU
 
 if camera_pos == "right":  # 摄像机右眼
@@ -46,19 +50,56 @@ init.light_ship = light_ship
 init.bodies = bodies
 init.event_subscription()
 
+UrsinaEvent.on_reset_unsubscription(init.on_reset)
+
+
+def on_reset():
+    init.on_reset
+    init.arrived_info = "距离[太阳中心]：${distance}\n\n"
+    init.arrived_info = "距离[太阳中心]：${distance}\n\n光速飞船速度：${speed}\n\n"
+
+
+def on_timer_changed(time_data: TimeData):
+    velocity, _ = get_value_direction_vectors(light_ship.velocity)
+    distance = round(init.light_ship.position[2] / AU, 4)
+    text = init.arrived_info.replace("${distance}", "%.4f AU" % distance)
+    init.text_panel.text = text.replace("${speed}", str(round(velocity / LIGHT_SPEED, 1)) + "倍光速")
+
+
+# 订阅重新开始事件
+# 按键盘的 “O” 重置键会触发 on_reset
+UrsinaEvent.on_reset_subscription(on_reset)
+# 订阅计时器事件（记录已到达天体列表）
+# 运行中，每时每刻都会触发 on_timer_changed
+UrsinaEvent.on_timer_changed_subscription(on_timer_changed)
+
 
 def body_arrived(body):
-    if body.name == "火星":
+    # 到达每个行星都会触发，对光速飞船进行加速，超光速前进（使用未来曲率引擎技术）
+    if body.name == "火星":  # 到达火星，加速前进，并进行攀升
         light_ship.acceleration = [0, 35, 300]
-    elif body.name == "木星":
+    elif body.name == "木星":  # 到达木星，加速前进，并进行下降
         light_ship.acceleration = [0, -100, 200]
-    elif body.name == "土星":
+    elif body.name == "土星":  # 到达土星，加速前进，并进行攀升
         light_ship.acceleration = [0, 55, 200]
-    elif body.name == "天王星":
+    elif body.name == "天王星":  # 到达天王星，加速前进，并进行下降
         light_ship.acceleration = [0, -50, 200]
-    elif body.name == "海王星":
+    elif body.name == "海王星":  # 到达海王星，加速前进，并进行攀升
         light_ship.acceleration = [-3, 48, 300]
-    print(body)
+    # print(body)
+
+# def body_arrived(body):
+#     # 到达每个行星都会触发，对光速飞船进行加速，超光速前进（使用未来曲率引擎技术）
+#     if body.name == "火星":  # 到达火星，加速前进，并进行攀升
+#         light_ship.acceleration = [0, 35000, 300000]
+#     elif body.name == "木星":  # 到达木星，加速前进，并进行下降
+#         light_ship.acceleration = [0, -100000, 200000]
+#     elif body.name == "土星":  # 到达土星，加速前进，并进行攀升
+#         light_ship.acceleration = [0, 55000, 200000]
+#     elif body.name == "天王星":  # 到达天王星，加速前进，并进行下降
+#         light_ship.acceleration = [0, -50000, 200000]
+#     elif body.name == "海王星":  # 到达海王星，加速前进，并进行攀升
+#         light_ship.acceleration = [-3, 48000, 300000]
 
 
 init.body_arrived = body_arrived
-- 
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