2D Top Down игра на Unity с нуля #6 | Коллайдеры

Summary

In this tutorial, the instructor walks through the process of adding environmental assets such as trees and bushes to a 2D Unity game. The lesson covers downloading and cutting sprite sheets, configuring colliders for both the player and environmental objects, and adjusting sorting layers for proper depth management. The player character’s collision behavior is fine-tuned to prevent it from moving through objects. Additionally, the lesson demonstrates how to create prefabs for efficient reuse of assets. By the end, the user is equipped with the knowledge to enhance their game scene with interactive, properly layered environmental elements.

Takeaways

• 😀 Download assets from trusted sites like H to find free and paid pixel art sprites.
• 😀 Extract and organize sprite sheets into appropriate folders (e.g., trees, bushes, rocks) to keep assets accessible.
• 😀 Use Unity's sprite slicing tool to cut large sprite sheets into individual pieces for easy use in the scene.
• 😀 Configure colliders correctly for the player character, trees, and bushes to prevent overlapping and ensure smooth interactions.
• 😀 Set up Capsule Colliders for all objects (player, trees, bushes) and adjust their positioning for accurate collision detection.
• 😀 Prevent unwanted rotation of the player by locking the Z-axis rotation in Unity's Rigidbody settings for 2D gameplay.
• 😀 Utilize sorting layers (Y-axis) to manage object visibility, ensuring characters appear in front of or behind environmental elements as needed.
• 😀 Create prefabs for objects like trees and bushes to reuse them easily across the scene and apply changes to all instances simultaneously.
• 😀 Test the game frequently to ensure objects are properly interacting and colliding (e.g., player not walking through trees or bushes).
• 😀 Organize all assets and prefabs in dedicated folders within the Unity project to maintain a clean and manageable workflow.

Q & A

What is the first step in the lesson after adding animations to the hero?

The first step is to add assets to the scene, such as trees and bushes, to make the environment more lively.

How do you download the assets for this lesson?

You open a browser, visit a website for assets (like H-asset), search for 'pixel' and '16' to find free assets, and then download them either for free or with a donation.

What do you do after downloading and unzipping the asset files?

You unzip the archive, navigate to the appropriate folders (like 'spits' for sprites), and cut the sprites into smaller pieces using the sprite editor in Unity.

How are the assets split correctly in Unity?

The assets are split into 16x16 tiles, and the sprite editor is used to cut out specific sections. For example, a tree sprite is cut into smaller chunks, ensuring the correct width and height for use in the scene.

Why does the author remove some parts of the sprite after splitting it?

Some parts, like small rocks or stumps, are unnecessary, so they are deleted to leave only the relevant elements, such as trees and larger objects, for use in the scene.

What is the purpose of adding colliders to the hero and environmental objects?

Adding colliders ensures that the hero and environmental objects, like trees and bushes, interact properly and prevent the hero from walking through them.

Why is the hero’s collider placed only on the legs and not the entire character?

The collider is placed on the legs to allow the hero to move behind or in front of objects, like trees, without the entire character being blocked by the collider, creating more realistic interactions.

What happens when the hero interacts with the trees and bushes after adding the colliders?

The hero can walk behind or in front of the trees, with the head disappearing behind the tree when the hero is positioned behind it, while the feet remain visible.

What is the importance of sorting by the Y-axis in this lesson?

Sorting by the Y-axis ensures that objects are rendered in the correct order, so the hero appears in front or behind environmental objects based on their relative positions in the scene.

How do you create a prefab, and why is it useful?

A prefab is created by dragging an object into the 'Prefab' folder in Unity. It allows you to reuse the same object multiple times in the scene without needing to manually adjust each instance, maintaining consistency and saving time.