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Unity – generate SpriteSheets at runtime!
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DaVikingCode/UnityRuntimeSpriteSheetsGenerator
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Unity and plugins provide many great ways to build Sprite Sheets. However they're used directly into Unity Editor or with an external software which is perfect in many case, but none provide the ability to generate SpriteSheets at runtime.
The RectanglePacking algorithm is a port of the AS3 version made byVille Koskela. Assets used in the demo come fromKenney.
You could combine the generated Sprite Sheets.png with apngquant compression via this scriptPngQuantNativeProcess.
Please note that Unity provides aTexture2D.PackTextures method, I didn't test it nor made benchmark performances.
Add theAssetPacker component to your GameObject:
usingDaVikingCode.AssetPacker;usingSystem.Collections;usingSystem.Collections.Generic;usingSystem.IO;usingUnityEngine;usingUnityEngine.UI;publicclassAssetPackerExample:MonoBehaviour{publicImageanim;AssetPackerassetPacker;voidStart(){string[]files=Directory.GetFiles(Application.persistentDataPath+"/Textures","*.png");assetPacker=GetComponent<AssetPacker>();assetPacker.OnProcessCompleted.AddListener(LaunchAnimations);assetPacker.AddTexturesToPack(files);assetPacker.Process();}voidLaunchAnimations(){StartCoroutine(LoadAnimation());}IEnumeratorLoadAnimation(){Sprite[]sprites=assetPacker.GetSprites("walking");inti=0;while(i<sprites.Length){anim.sprite=sprites[i++];yieldreturnnewWaitForSeconds(0.1f);// loopif(i==sprites.Length)i=0;}}}
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Unity – generate SpriteSheets at runtime!
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