<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Joint on PlumePHP</title><link>https://plumephp.com/tags/joint/</link><description>Recent content in Joint on PlumePHP</description><generator>Hugo</generator><language>zh-CN</language><lastBuildDate>Sun, 27 Sep 2026 09:00:00 +0800</lastBuildDate><atom:link href="https://plumephp.com/tags/joint/index.xml" rel="self" type="application/rss+xml"/><item><title>Defold 物理引擎：碰撞体、回调、关节与性能优化</title><link>https://plumephp.com/defold-physics-collision/</link><pubDate>Sun, 27 Sep 2026 09:00:00 +0800</pubDate><guid>https://plumephp.com/defold-physics-collision/</guid><description>&lt;p&gt;Defold 内置基于 &lt;strong&gt;Box2D&lt;/strong&gt; 的 2D 物理引擎，同时支持基于 &lt;strong&gt;Bullet&lt;/strong&gt; 的 3D 物理。(&lt;a href="https://defold.com/manuals/physics/" title="Physics manual"&gt;Defold physics docs&lt;/a&gt;) 物理在 Defold 中是「组件级」能力：给 Game Object 挂一个 &lt;code&gt;CollisionObject&lt;/code&gt; 组件，就能参与世界模拟、碰撞检测与力/冲量交互。本文从组件配置讲到回调、关节与性能，是物理方向的深度实践篇。&lt;/p&gt;</description></item></channel></rss>