transform.rotation.eulerAngles.y为物体面向旋转的角度，那么直接计算lookDirection与Vector2 (0, 1)向量的夹角就完事了。

Unity, the popular "build once, deploy anywhere" 3D game engine, is going 2D. At the company's UNITE conference in Vancouver this morning, CEO David Helgason announced three things: official ...

A complete tutorial explaining how to create a very basic 2D platform game for Android with touch-screen controls in Unity.

In part two of this tutorial we look at adding hazards, multiple platforms, ground detection and much more to create a basic but fun platformer.