better-tee/Assets/Code/Player/DrawableFrame.cs

using UnityEngine;


namespace BetterTee.Player 
{

    public class DrawableFrame : MonoBehaviour
    {
        [Header("Configuration")]
        public Vector2Int resolution;
        public Color startingColor = Color.white;

        [Header("State")]
        public bool interactable = false;
        public bool hasChanged = false;

        [Header("References")]
        protected Texture2D texture = null;
        protected Sprite sprite = null;
        protected SpriteRenderer spriteRenderer;

        public Rect Bounds {
            get {
                return new Rect(transform.position.x - (transform.localScale.x / 2),
                                transform.position.y - (transform.localScale.y / 2),
                                transform.localScale.x,
                                transform.localScale.y);
            }
        }
        
        protected void Start()
        {
            texture = new Texture2D(resolution.x, resolution.y);
            if(resolution.x <= 128 || resolution.y <= 128) {
                texture.filterMode = FilterMode.Point;
            }
            else {
                texture.filterMode = FilterMode.Trilinear;
            }

            Color[] colors = texture.GetPixels();
            for(int i = 0; i < colors.Length; i++) {
                colors[i] = startingColor;
            }
            texture.SetPixels(colors);
            texture.Apply();

            spriteRenderer = GetComponent<SpriteRenderer>();
            sprite = Sprite.Create(texture, new Rect(0, 0, resolution.x, resolution.y), new Vector2(0.5f, 0.5f), resolution.x);
            spriteRenderer.sprite = sprite;
        }

        public Color[] GetPixels() {
            return texture.GetPixels();
        }

        public void SetPixels(Color[] colors) {
            if(interactable) {
                texture.SetPixels(colors);
                hasChanged = true;
            }
        }

        public byte[] ToPNG() {
            return texture.EncodeToPNG();
        }

        protected void Update() {
            if(hasChanged) {
                texture.Apply();
            }
        }
        
        protected void OnDrawGizmos() 
        {
            Gizmos.DrawWireCube(transform.position, transform.localScale);
        }
    }

}