using UnityEngine using System.Linq using System.Collections using /// /// Generate paint decals /// public class DecalPainter : MonoBehaviour #endifįeel free to contact me for any question.By using Tilemaps, making a level is like painting! Everything between UNITY_EDITOR is just debug stuff that can be removed. - Finally, just call from another script to paint! // // It included a debug mode where you can click in the scene to paint. - Then fill the 'PaintDecalPrefabs' list with your decals prefabs. There should be only one instance of this script. // Usage: // - Attach it to an unique object that won't be deleted of your choice.

Author: Damien Mayance () // 2013 - Pixelnest Studio () // // This script paints decals on surfaces it hits from a point. Provided “as it’, “no warranty”, “works for me”. If you have a lot of colors or decals, you may have to find another solution to preload your materials. You can also mark your decals as “Static” if you don’t plan to move them. If you open the Stats window, you can see this optimization. Unity will batch all calls of the same decals. So I made a simple list-based system where we create a material only when we want to use a decal/color we never used before and we register it in the list. But if you assign a new color to a shared material, either all decals using it will change color or you will create a new material and lose the shared connection. However, it is not that simple in our case: we want multicolor paintings. See the documentation about Draw Call Batching. I discovered that Unity will automatically optimize draw calls when it can. Maybe this can be optimized at splash time: if the raycast already return a splash, maybe we don’t need to create a new one. If the pool is large enough, you’ll have some time before the player see some splash are missing. If we reach the limit, we delete the oldest decal to recreate a new one. Recycling poolĭecals are stored in an array.

I used the script I published before and added some new feature.

Permanent paint, even with a giant pool the time will come where some paintings will be removed.

Batching (thanks to built-in Unity optimization).

Advanced research on painting a level with decals in Unity 3D.Īfter another day of research, I am quite satisfied with the result:

Unity 2d paint