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Learn how to effectively find a string in a list and change your GameObject's name in Unity using C-. This guide breaks down common issues and solutions for working with custom classes and LINQ.
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This video is based on the question https://stackoverflow.com/q/73161463/ asked by the user 'aron kan' ( https://stackoverflow.com/u/19616654/ ) and on the answer https://stackoverflow.com/a/73162051/ provided by the user 'aron kan' ( https://stackoverflow.com/u/19616654/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Finding and Changing a GameObject’s Name in Unity Using C-

When working with Unity, developers often face challenges when manipulating GameObjects based on specific conditions. One common scenario involves searching for a string in a list of custom class objects. The objective is to change the GameObject's name based on a match found within that list. In this guide, we’ll explore how to effectively accomplish this task using LINQ queries in C-.

The Problem

Imagine you have a custom class with two variables, and you’re storing instances of this class in a List. You need to check if a GameObject's name contains an identifier (ID), which is the first variable in your List. If it does, you want to replace the GameObject's name with the second variable from the List. Here’s the challenge: after establishing a match, you need access to the matched object’s properties to perform the name change.

To illustrate, consider the following situation:

Current GameObject Name: Must contain an ID that matches the ones in our List.

Expected Outcome: Change the GameObject's name to the second variable of the matched List object.

The Initial Attempt

Let's take a look at the initial approach that was tried:

[[See Video to Reveal this Text or Code Snippet]]

In this case, as designed, the code checks if any object in showing_my_loading_list contains the GUID of each list item in the anchor.name. If it finds a match, it prints "Found" to the console. However, the issue here is that once the condition is met, we lose access to the specific instance s that was matched, making it impossible to access the second variable.

The Solution

After identifying this limitation, a more effective approach was implemented. Below is the adjusted code that successfully finds the string and changes the GameObject's name:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Solution:

Finding the Match:

Instead of using .Any(), we utilize the .Find() method, which returns the first object that satisfies the condition (if any).

This allows us to directly work with the matched object, stored in the variable temp.

Checking for a Null Result:

We check if temp is not null. This tells us that we have found a match.

Changing the GameObject's Name:

If a match is found, we can set anchor.name to temp.readable_guid, which is the second variable of our matched object.

Logging Action:

Finally, we use Debug.Log to confirm that the name change has been executed.

Conclusion

In this post, we explored an efficient way to change a GameObject's name based on a string found in a list using C-. By using the Find() method, we maintain access to the matched list item, allowing for seamless property access and name modification.

Implementing this approach within your Unity projects can improve your workflow and streamline your game development processes. Happy coding!