public SgtLightning Spawn()
        {
            if (mesh != null && LifeMin > 0.0f && LifeMax > 0.0f)
            {
                var sprite = RandomSprite;

                if (sprite != null)
                {
                    var lightning = SgtLightning.Create(this);
                    var material  = lightning.Material;
                    var uv        = SgtHelper.CalculateSpriteUV(sprite);

                    if (material == null)
                    {
                        material = SgtHelper.CreateTempMaterial("Lightning (Generated)", SgtHelper.ShaderNamePrefix + "Lightning");

                        lightning.SetMaterial(material);
                    }

                    lightning.Life = Random.Range(LifeMin, LifeMax);
                    lightning.Age  = 0.0f;

                    lightning.SetMesh(mesh);

                    material.SetTexture(SgtShader._MainTex, sprite.texture);
                    material.SetColor(SgtShader._Color, SgtHelper.Brighten(RandomColor, Brightness));
                    material.SetFloat(SgtShader._Age, 0.0f);
                    material.SetVector(SgtShader._Offset, new Vector2(uv.x, uv.y));
                    material.SetVector(SgtShader._Scale, new Vector2(uv.z - uv.x, uv.w - uv.y));

                    lightning.transform.localRotation = Random.rotation;

                    return(lightning);
                }
            }

            return(null);
        }