public void DrawShadows(Texture2D[] textures, Point[] locations, RenderTarget2D screenGround, RenderTarget2D screenLights, float density)
        {
            if (_lightSource == null)
            {
                return;
            }

            if (textures == null || density > 1 || density < 0 || textures.Length != locations.Length)
            {
                throw new Exception("Invalid parameter");
            }

            // This is called every frame because of the cat animation.
            // If your shadow casters map is static, you can generate it once.
            shadowMap.StartGeneratingShadowCasteMap(false);
            {
                for (int i = 0; i < textures.Length; i++)
                {
                    var location = World.CurrentMap.PositionOnVisibleMap(locations[i].X, locations[i].Y);

                    shadowMap.AddShadowCaster(textures[i], new Vector2(location.X + 4, location.Y + 4), textures[i].Width, textures[i].Height);
                }
            }
            shadowMap.EndGeneratingShadowCasterMap();

            Vector2 lightPosition = new Vector2(Engine.AnglerGame.MainPlayer.ScreenX + Const.TILE_SIZE / 2,
                                                Engine.AnglerGame.MainPlayer.ScreenY + Const.TILE_SIZE / 2);

            shadowMapResolver.ResolveShadows(this.shadowMap, _lightSource, PostEffect.None, lightPosition, World.MainPlayer.Radius + 5);

            // We print the lights in an image
            GraphicsDevice.SetRenderTarget(screenLights);
            {
                GraphicsDevice.Clear(Color.Black);
                Engine.SpriteBatch.Begin(SpriteSortMode.Deferred, BlendState.Additive);
                _lightSource.Draw(Engine.SpriteBatch);
                Engine.SpriteBatch.End();
            }

            // Clone the ground texture
            GraphicsDevice.SetRenderTarget(cloner);
            GraphicsDevice.Clear(Color.White);
            Engine.SpriteBatch.Begin();
            Engine.SpriteBatch.Draw(screenGround, Vector2.Zero, Color.White);
            Engine.SpriteBatch.End();

            // This command impress a texture on another using 2xMultiplicative blend, which is perfect to paste our lights on the underlying image
            World.LightsFX.PrintLightsOverTexture(screenGround, Engine.SpriteBatch, Engine.AnglerGame.GraphicsDeviceManager, screenLights, cloner, density);
        }
Exemple #2
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 public void Draw(Vector2 WorldPos)
 {
     // Game.GraphicsDevice.Clear(Color.CornflowerBlue);
     ShadowMapResolver.ResolveShadows(ShadowMap, LightSource, PostEffect.LinearAttenuation_BlurHigh, 1.0f, LightPosition);            //CurveAttenuation_BlurHigh
     foreach (var lb in Bullets)
     {
         ShadowMapResolverBullets.ResolveShadows(ShadowMap, lb.Light, PostEffect.CurveAttenuation_BlurHigh, 1.0f, GetMyScreenPos(lb.MyBullet.Position));
     }
     Game.GraphicsDevice.SetRenderTarget(ScreenLights);
     {
         Game.GraphicsDevice.Clear(Color.Black);
         sb.Begin(SpriteSortMode.Deferred, BlendState.Additive);
         {
             LightSource.Draw(sb);
             foreach (var lb in Bullets)
             {
                 lb.Light.Draw(sb);
             }
         }
         sb.End();
     }
     Game.GraphicsDevice.SetRenderTarget(ScreenGround);
     Game.GraphicsDevice.Clear(Color.Black);
 }