MyGame.HPBillboardSystem.drawBillboards C# (CSharp) Method

        void drawBillboards()
        {
            //graphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0,
            //    4 * nBillboards, 0, nBillboards * 2);

            for (int i = 0; i < monsters.Count; i++)
            {
                //if(effect.Parameters["ParticleTexture"].GetValueTexture2D() != monstersTextures[i])
                effect.Parameters["ParticleTexture"].SetValue(monstersTextures[i]);
                drawBillboard(i);
            }
        }