Скачать или смотреть How to Move a Sprite in Unity 2D with Mouse Clicks

Discover how to effortlessly move your 2D sprite in Unity when clicked, optimizing player interaction and control.
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This video is based on the question https://stackoverflow.com/q/70002692/ asked by the user 'MikaMikashu' ( https://stackoverflow.com/u/17220153/ ) and on the answer https://stackoverflow.com/a/70003304/ provided by the user 'skill347' ( https://stackoverflow.com/u/12069665/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

Are you working on a 2D game using Unity 3D? Do you want your sprites to move when clicked? If so, you're in the right place! Many developers encounter challenges trying to implement sprite movement based on user clicks. In this guide, we will explore how to move a sprite up 15 pixels whenever the mouse is clicked while hovering over it. Let’s break down how to achieve this in a clear and concise manner.

Understanding the Problem

The problem arises from a code snippet where incorrect components and methods are being used. In your situation, you wish to move a sprite upward (or in different directions) depending on mouse input. However, the initial implementation you provided contains a few mistakes which prevent it from working correctly:

Using Rigidbody vs. Rigidbody2D: In a 2D game, you need to use Rigidbody2D instead of Rigidbody.

Incorrect Direction Method: The use of transform.forward is incorrect in a 2D context. We should be using the transform.up method to define the upward direction.

Velocity Manipulation: Directly modifying the velocity can lead to unintended behavior. Instead, we can use Unity's built-in functions for a smoother control mechanism.

Solution Breakdown

Now, let’s correct your code step-by-step, ensuring we leverage the proper components and methods in Unity.

Step 1: Replace Rigidbody with Rigidbody2D

First, make sure that your sprite has a Rigidbody2D component attached to it. This is crucial for physics-based movement in 2D games.

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

Step 2: Correct the Movement Direction

Next, change the way you handle movement direction. Instead of using transform.forward, you will use transform.up. This adjustment ensures your sprite moves upward as intended.

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

Step 3: Use AddForce for Movement

Rather than setting the velocity directly, we should utilize the AddForce method provided by Unity. This will apply a force that will result in more natural movement, as opposed to instantly changing the object's speed.

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

Complete Code Example

Here is how your complete corrected code should look:

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

Conclusion

Now, you've learned how to successfully move a 2D sprite in Unity by clicking on it. With just a few adjustments, you can enhance the player experience in your game. By switching to Rigidbody2D, updating the movement direction, and utilizing the AddForce function, you'll achieve smooth and responsive sprite movement.

Feel free to experiment further, and happy game developing!