private void SpawnWall()
{
Random random = new Random();
if (this.m_WallGrid.Count > 0)
{
int selectedPoint = random.Next(0, this.m_WallGrid.Count - 1);
GridPoint selected = this.m_WallGrid.ElementAt(selectedPoint);
//create floats in the range -1 to 1
float x = (float)(random.NextDouble() * 2 - 1);
float y = (float)(random.NextDouble() * 2 - 1);
Wall wall = new Wall(
this,
new Vector2(selected.X, selected.Y),
new Vector2(x, y),
Settings.wallRadius,
Settings.wallThickness,
true);
if (!(wall.Collides(this.GetPlayer())))
{
this.m_WallIndices.Add(wall.GetID());
this.AddEntity(wall);
this.m_WallGrid.Remove(selected);
}
}
}
private void DrawShadow(Wall wall, float layer)
{
Vector2[] corners = wall.GetPoints();
Vector2 p = GetPlayer().GetPosition();
Vector2 center = (corners[0] + corners[1] + corners[2] + corners[3]) / 4;
Vector2 ray = center - p;
Vector2 pos1 = corners[0];
for (int i = 1; i < 4; i++)
{
Vector2 ray1 = pos1 - p;
Vector2 ray2 = corners[i] - p;
if (SignedAngle(ray, ray2) < SignedAngle(ray, ray1)) pos1 = corners[i];
}
Vector2 pos2 = corners[0];
for (int i = 1; i < 4; i++)
{
Vector2 ray1 = pos2 - p;
Vector2 ray2 = corners[i] - p;
if (SignedAngle(ray, ray2) > SignedAngle(ray, ray1)) pos2 = corners[i];
}
Vector2 dir1 = pos1 - p;
Vector2 dir2 = pos2 - p;
float angle = SignedAngle(dir1, pos2 - p);
int width = (int)Math.Min(wall.GetRadius(), wall.GetThickness());
int length = Drawer.FullScreenRectangle.Width;
Rectangle rect = new Rectangle(0, 0, length, width);
Vector2 offset = new Vector2(-dir1.Y, dir1.X);
offset.Normalize();
float arc = angle * (length + Math.Max(dir1.Length(), dir2.Length()));
//rect.Location = new Point((int)(pos1.X - width * offset.X), (int)(pos1.Y - width * offset.Y));
//Drawer.Draw(TextureStatic.Get("Shadow"), rect, null, Color.Black, (float)Math.Atan2(dir1.Y, dir1.X), Vector2.UnitY * TextureStatic.Get("Shadow").Width, SpriteEffects.None, 1f);
for (float s = 0; s < arc; s += width)
{
float frac = s / arc; //fraction of total progress
float theta = frac * angle;
//float distMult = (dir2.Length() / dir1.Length()) - (1 - frac) * (dir2.Length() - dir1.Length()) / dir1.Length();
Vector2 trav = dir2 - dir1;
Vector2 norm = new Vector2(trav.Y, -trav.X);
norm.Normalize();
Vector2 loc = dir1 + trav * frac + norm * width * (1 - frac) * (frac) + p;
rect.Location = new Point((int)(loc.X + width * offset.X * (1 - frac)), (int)(loc.Y + width * offset.Y * (1 - frac)));
Drawer.Draw(TextureStatic.Get("Shadow"), rect,
null, Color.Black, (float)Math.Atan2(dir1.Y, dir1.X) + theta, Vector2.UnitY * TextureStatic.Get("Shadow").Width, SpriteEffects.None, layer);
}
rect.Location = new Point((int)pos2.X, (int)pos2.Y);
Drawer.Draw(TextureStatic.Get("Shadow"), rect,
null, Color.Black, (float)Math.Atan2(dir1.Y, dir1.X) + angle, Vector2.UnitY * TextureStatic.Get("Shadow").Width, SpriteEffects.None, layer);
}
