Archive Browser

using System.Drawing;

namespace AiTest
{
  // Movement rules sourced from:
  // http://www.elmerproductions.com/sp/peterb/BDCFF/objects/0009.html

  class Butterfly : Sprite
  {
		#region  Public Constructors  

    public Butterfly()
    {
      this.Direction = Direction.Down;
    }

		#endregion  Public Constructors  

		#region  Public Overridden Methods  

    public override void Move()
    {
      Tile tile;

      // TODO: In this sample, we are only checking if a tile is non-solid. We aren't checking the positions of other sprites.

      // first see if we can move in our preferred direction, right
      tile = this.GetAdjacentTile(this.GetNewDirection(Direction.Right));
      if (!tile.Solid)
      {
        // we can move here, update our position and also set our new direction
        this.Location = tile.Location;
        this.Direction = this.GetNewDirection(Direction.Right);
      }
      else
      {
        // can't move in our preferred direction, so lets try the direction the sprite is facing
        tile = this.GetAdjacentTile(this.Direction);
        if (!tile.Solid)
        {
          // we can move here, update our position, but not the direction
          this.Location = tile.Location;
        }
        else
        {
          // can't move forwards either, so finally lets just turn left
          this.Direction = this.GetNewDirection(Direction.Left);
        }
      }
    }

		#endregion  Public Overridden Methods  

		#region  Public Properties  

    public override Color Color
    {
      get { return Color.FromKnownColor(KnownColor.Goldenrod); }
    }

		#endregion  Public Properties  
  }
}