Unity 5.6.0f3中IActiveBuildTargetChanged缺失编译报错求助

Hey there, let's work through this error step by step since you're new to Unity. Here's the breakdown and how to fix it:

Why this error happens #

The script MobileControlRig.cs is trying to use an interface called IActiveBuildTargetChanged that doesn't exist in Unity 5.6.0f3. This interface was added in later Unity versions (around 2017+), so the code you're working with is incompatible with your school computer's older Unity install.

Step-by-step solution #

Follow these straightforward steps to get your project compiling again:

1. Locate the problematic script

   • In Unity's Project window (usually bottom-left of the editor), navigate to Assets/_Complete-Game/MobileInput/Scripts/
   • Double-click the MobileControlRig.cs file to open it in your code editor (MonoDevelop or Visual Studio, whichever Unity launches by default).

2. Remove the unsupported code from the script

   • First, find the line at the top that reads using UnityEditor.Build; — delete this entire line.
   • Next, look for the class definition line, which will look similar to:

     public class MobileControlRig : MonoBehaviour, IActiveBuildTargetChanged
     

     Remove the , IActiveBuildTargetChanged portion so it becomes:

     public class MobileControlRig : MonoBehaviour
     

   • Finally, find the method that implements this interface (it will look like the code below) and delete the entire method, including its curly braces:

     public void OnActiveBuildTargetChanged(BuildTarget previousTarget, BuildTarget newTarget)
     {
         // Any code inside these braces
     }
     

3. Save and let Unity recompile

   • Save the script in your code editor (press Ctrl+S on Windows).
   • Switch back to Unity — it will automatically recompile the scripts. You should see the error disappear from the Console window.

Once compilation finishes without errors, you can click the Play button to test your player movement script!

内容的提问来源于stack exchange，提问作者Vampi Step