Hi people.

The problem is that the floor moves with the player in same time. But if not draw walls i can see, that floor is just rotating but not moving in any direction — it is static. In the correct implementation, the player must walk on the floor. I attach the animation on which this effect is visible and my code that implements the collision with the floor. I have tried different versions of code for floorcasting (from forums, sources, including current version — from lodev).

Note: I implemented level geometry as sectors (set of lines), not as blocks like in Wolf3d. I know that Doom uses bsp tree, and renders floor in different way. But I suppose that current way works with sectors too (but slowly).

 

               stripPosY = (ProjectionPlane.me().sizeInWorld.Y / 2 - (int)(stripHeight / 2));
               stripPosY += (int)stripHeight-1;
               startPixel = stripPosY;

               while (startPixel != ProjectionPlane.me().sizeInWorld.Y)
                {
                    float curdist = ProjectionPlane.me().sizeInWorld.Y / (2.0f * startPixel - ProjectionPlane.me().sizeInWorld.Y);

                    float weight = curdist / (float)(minimalDist);

                    float floorX = weight * ((PointF)minimalIntersection).X + (1.0f - weight) * (Player.me().worldPosition.X);
                    float floorY = weight * ((PointF)minimalIntersection).Y + (1.0f - weight) * (Player.me().worldPosition.Y);

                    int textureX = (int)(floorX * ProjectionPlane.imageFloor1.Width) % ProjectionPlane.imageFloor1.Width;
                    int textureY = (int)(floorY * ProjectionPlane.imageFloor1.Height) % ProjectionPlane.imageFloor1.Height;

                    textureX = (int)Math.Abs(textureX);
                    textureY = (int)Math.Abs(textureY);

                    SolidBrush b = new SolidBrush(ProjectionPlane.imageFloor1.GetPixel(textureX, textureY));

                    g.FillRectangle(b, stripX, startPixel, 1, 1);

                    startPixel++;
                }