GetClosestEdgeToCircle()

static bool Terraria.Physics.BallCollision.GetClosestEdgeToCircle ( Vector2 position, Vector2 size, Vector2 velocity, out Vector2 collisionPoint, out Tile collisionTile )

inlinestaticprivate

Definition at line 152 of file BallCollision.cs.

    {
        Rectangle tileBounds = GetTileBounds(position, size);
        Vector2 vector = position + size * 0.5f;
        TileEdges tileEdges = TileEdges.None;
        tileEdges = ((!(velocity.Y < 0f)) ? (tileEdges | TileEdges.Top) : (tileEdges | TileEdges.Bottom));
        tileEdges = ((!(velocity.X < 0f)) ? (tileEdges | TileEdges.Left) : (tileEdges | TileEdges.Right));
        tileEdges = ((!(velocity.Y > velocity.X)) ? (tileEdges | TileEdges.TopRightSlope) : (tileEdges | TileEdges.BottomLeftSlope));
        tileEdges = ((!(velocity.Y > 0f - velocity.X)) ? (tileEdges | TileEdges.TopLeftSlope) : (tileEdges | TileEdges.BottomRightSlope));
        collisionPoint = Vector2.Zero;
        collisionTile = null;
        float num = float.MaxValue;
        Vector2 closestPointOut = default(Vector2);
        float distanceSquaredOut = 0f;
        for (int i = tileBounds.Left; i < tileBounds.Right; i++)
        {
            for (int j = tileBounds.Top; j < tileBounds.Bottom; j++)
            {
                if (GetCollisionPointForTile(tileEdges, i, j, vector, ref closestPointOut, ref distanceSquaredOut) && !(distanceSquaredOut >= num) && !(Vector2.Dot(velocity, vector - closestPointOut) > 0f))
                {
                    num = distanceSquaredOut;
                    collisionPoint = closestPointOut;
                    collisionTile = Main.tile[i, j];
                }
            }
        }
        float num2 = size.X / 2f;
        return num < num2 * num2;
    }

References Microsoft.Xna.Framework.Rectangle.Bottom, Microsoft.Xna.Framework.Vector2.Dot(), Terraria.Physics.BallCollision.GetCollisionPointForTile(), Terraria.Physics.BallCollision.GetTileBounds(), Microsoft.Xna.Framework.Rectangle.Left, Microsoft.Xna.Framework.Rectangle.Right, Terraria.Main.tile, Microsoft.Xna.Framework.Rectangle.Top, Microsoft.Xna.Framework.Vector2.X, and Microsoft.Xna.Framework.Vector2.Zero.

Referenced by Terraria.Physics.BallCollision.Step().