69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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跟随脚本 - 让对象跟随指定的目标对象
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"""
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from core.script_system import ScriptBase
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from panda3d.core import Vec3
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class FollowerScript(ScriptBase):
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"""跟随脚本类"""
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def __init__(self):
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super().__init__()
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self.target = None # 跟随目标
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self.follow_speed = 5.0 # 跟随速度
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self.follow_distance = 2.0 # 跟随距离
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self.is_following = True # 是否正在跟随
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def start(self):
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"""脚本开始时调用"""
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self.log("跟随脚本启动！")
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self.log(f"跟随参数: 速度={self.follow_speed}, 距离={self.follow_distance}")
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def update(self, dt):
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"""每帧更新"""
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if not self.is_following or self.target is None:
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return
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target_pos = self.target.getPos()
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current_pos = self.gameObject.getPos()
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# 计算目标方向
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direction = target_pos - current_pos
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distance = direction.length()
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# 如果距离大于跟随距离，则移动
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if distance > self.follow_distance:
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if distance > 0:
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direction.normalize()
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# 计算目标位置（保持跟随距离）
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target_follow_pos = target_pos - direction * self.follow_distance
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# 平滑移动到目标位置
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move_direction = target_follow_pos - current_pos
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move_distance = move_direction.length()
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if move_distance > 0:
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move_direction.normalize()
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move_amount = min(self.follow_speed * dt, move_distance)
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new_pos = current_pos + move_direction * move_amount
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self.gameObject.setPos(new_pos)
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# 朝向目标
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self.gameObject.lookAt(target_pos)
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def set_target(self, target):
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"""设置跟随目标"""
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self.target = target
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if target:
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self.log(f"设置跟随目标: {target.getName()}")
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else:
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self.log("清除跟随目标")
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def on_destroy(self):
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"""脚本销毁时调用"""
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self.log("跟随脚本停止") |